HP 5061B Service manual

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J: OPERATING AND SERVICE MANUAL
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50618
Cesium Beam
Frequency Standard
F /i OW HEWLETT
~ ~ PACKARD
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CERTIFICATION
Hewlett-Packard Company certifies that this instrument met its published specifications at
the time of shipment from the factory. Hewlett-Packard Company further certifies that its
calibration measurements are traceable to the United States National Bureau of Standards,
to the
extent allowed by the Bureau's calibration facility, and to the calibration facilities of
other International Standards Organization members.
WARRANTY AND ASSISTANCE
This Hewlett-Packard product is warranted against defects in materials and workmanship
for a period of one year from the date of shipment except that in the case of certain components
listed in Table 1-1 of this manual, the warranty shall be for the specified period. Hewlett-Packard
will, at its option, repair or replace products which prove to be defective during the warranty
period provided theyare returned to Hewlett-Packard, and provided the preventive maintenance
procedures in this manual are fOllowed. Repairs necessitated by misuse of the product are not
covered by this warranty. NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. HEWLETT-PACKARD IS NOT LIABLE FOR
CONSEQUENTIAL DAMAGES.
Service
contracts or customer assistance agreements are available for Hewlett-Packard
products.
For
any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses
are provided at the back
of this manual. •
Scans by Artekmedia => 2011

rliiW HEWLETT
~~ PACKARD
OPERATING AND SERVICE MANUAL
5061B
CESIUM BEAM FREQUENCY STANDARD
(Including Options 003 and 004)
SERIAL PREFIX
This manual applies directly to HP Model5061B Cesium
Beam Frequency Standards with Serial Prefix 2636A
and units with Serial Numbers 2624A00152 through
2624A00156.
With changes described in Section VII (Manual Back-
dating), this manual applies to instruments with Serial
Numbers 2624A and 2612A. Also covered in Section VII
is the Series 2612 A2 Battery Charger Assembly (Part of
Option 003).
SERIAL PREFIXES NOT LISTED
For Serial Prefixes above 2636A, a "Manual Updating
Changes" sheet is included with this manual.
OPTIONS
This manual applies directly to Model 5061B instru-
ments with Option 003 (Time Standard and Standby
Power Supply) and Option 004 (High Performance
Beam Tube).
@HEWLETT-PACKARD COMPANY 1986
5301 STEVENS CREEK BLVD., SANTA CLARA, CA 95051-7299
MANUAL PART NUMBER: 05061-9078
MICROFICHE PART NUMBER 05061·9079 PRINTED: OCTOBER 1986
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Section
I
TABLE OF CONTENTS
GENERAL INFORMATION
HP 5061B
Table of Contents
Page
1-1
1-1. Introduction. . . . . . . .. . . . . . .. . . .. . .. . . . .. . . . . .. .. . . . . .. .. . . . .. . .. . . 1-1
1-4. Manual Summary ................................................ 1-1
1-6. Options ........................................................... 1-1
1-8. Terminology. . . . . . ... . . . . . .. . . . .. . . . . . .. . . . . .. . . . . . . .. .. . . . . .. .. . . 1-2
1-10. Specifications. . . . . . . . . . . . . . . . . . . . .. . . . . . . .. . . . . .. .. . . . .. . .. . . . . .. . 1-2
1-12. Instrument Identification ......................................... 1-2
1-14. Safety Considerations ............................................ 1-2
1-16. Accessories. . . . .. . . ... . . . . . .. . . .. . . . . . .. . . . .. . . . . .. . . . . . . . . .. . . . . . 1-6
1-18. Recommended Test Equipment for the HP 5061B ................. 1-7
II INSTALLATION ......................................................... 2-1
2-1.
2-3.
2-5.
2-6.
2-9.
2-11.
~ 2-13.
2-14.
2-16.
2-18.
2-20.
2-22.
2-24.
2-26.
2-28.
Introduction ...................................................... 2-1
Unpacking and Inspection. ....................................... 2-1
Storage and Shipment ............................................ 2-1
Environment ................................................... 2-1
Packaging ...................................................... 2-1
Tagging for Service ............................................. 2-1
Electrical Power Connections ..................................... 2-2
AC Line Voltage................................................ 2-2
DC Line Voltage................................................ 2-2
Power Cables ..................................................... 2-2
AC Powel' Cable Installation .................................... 2-2
DC Power Connector ............................................ 2-3
Mating Connectors ............................................. 2-3
Operation as Bench or Rack Instrument . . . . . .. . . . .. . . . . .. . . . . . . . .. 2-3
Installation Location ............................................. 2-4
III OPERATION ............................................................. 3-1
h.. 3-1.
~3-3.
3-5.
3-7.
3-9.
3-11.
3-12.
3-14.
3-16.
3-18.
3-20.
3-23.
3-25.
3-27.
3-29.
3-32.
3-34.
3-36.
3-39.
3-41.
3-42.
3-45.
3-47.
3-51.
Introduction ...................................................... 3-1
Controls and Indicators on Front, Top, and Rear Panels........... 3-1
Front Panel LED (Light Emitting Diode) Indications ............ 3-5
Front Panel MODE Switch Functions........................... 3-6
Front Panel CIRCUIT CHECK Switch and Meter ............... 3-6
Turn-On Procedures............................................... 3-7
Introduction to Turn-On ........................................ 3-7
Initial Turn-On Procedure ....................................... 3-7
C-Field Adjustment Procedure................................... 3-8
CIRCUIT CHECK Meter Indications ............................ 3-9
Degaussing -General Information ............................. 3-9
HI CURRENT Degaussing Procedure ........................... 3-9
LO CURRENT Degaussing Procedure ........................... 3-10
Routine Operating Procedures ................................... 3-10
Operation with Time Standard (Part of Option 003) ............... 3-11
Setting the Clock Pulse to an External CI~k .................... 3-11
Automatic Synchronization ..................................... 3-11
Manual Synchronization ........................................ 3-11
Setting the LCD Clock Display .................................. 3-13
Operation with Internal Standby Battery
(Part of Option 003) ............................................... 3-13
Initial Charging of Battery ..................................... 3-13
Recharge Time Requirements ................................... 3-13
Operation From an External DC Supply ........................ 3-13
HP 5061B Power Removal ...................................... 3-14
111
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HP 5061B
Table of Contents
Section
III (Cont'd.) 3-53.
3·55.
3-57.
TABLE OF CONTENTS (Continued)
Page
Operation with High Performance Tube (Option 004) .............. ,3-14
HP 5061B Operating Record ...................................... 3-14
In-Cabinet Performance Test ...................................... 3-14
IV THEORY OF OPERATION ............................................... 4-1
IV
4-1.
4-13.
4-15.
4-16.
4-21.
4-28.
4-41.
4-101.
4-105.
4-113.
4-115.
4-120.
4-127.
4-141.
4-149.
4-155.
4-157.
4-159.
4-161.
4-163.
4-166.
4-169.
4-171.
4-173.
4-175.
4-177.
4-179.
4-181.
4-184.
4-186.
4-191.
4-194.
4-200.
4-205.
4-207.
4-209.
4-211.
4-213.
4-216.
4-220.
4-224.
4-231.
4-240.
4-242.
4-247.
4-256.
4-270.
4-272.
4-275.
4-279.
4-281.
Introduction ..................................................... .
Logic
Symbols ................................................... .
Explanation of New Logic Symbols (by F.A. Mann)* ............. .
Introduction ................................................... .
Symbol Composition ........................................... .
Qualifying Symbols ............................................ .
Dependency
Notation .......................................... .
Bistable Elements ............................................. .
Coders
......................................................... .
Use of Binary Grouping to Produce Affecting Inputs ........... .
Sequence of Input Labels ...................................... .
Sequence of Output Labels ..................................... .
Al Synthesizer Description .................................... .
Phase-Locked Voltage-Controlled
Oscillator .................... .
A2
Battery Charger Description (Part of Option 003) ............. .
Rectifier
....................................................... .
Wave
Clipper .................................................. .
Charge Current Regulator ..................................... .
Current Sense Resistor ......................................... .
Current Detector Switch ....................................... .
Low
Battery Dropout .......................................... .
A3 Multiplier Description
........................................ .
Phase Modulator (A3 Multiplier) ............................... .
Balanced Doubler (A3 Multiplier) .............................. .
10 MHz Filter (A3 Multiplier) .................................. .
10-to-30 MHz TripIer (A3 Multiplier) ............................ .
30 MHz Filter (A3 Multiplier) .................................. .
30-To-90-MHz Class C TripIer and Filter (A3 Multiplier) ......... .
5-MHz
Isolation Amplifier (A3 Multiplier) ...................... .
A4
Harmonic Generator Description ............................. .
A5
Digital Divider Description (Part of Option 003) ............... .
A5A1 Multiplier-Amplifier
....................................... .
A5A2 5-Volt
Regulator ......................................... .
A5A3 10 MHz
to 1 PPS Divider and Delay ..................... .
A5A3
TIME DELAY Switches and Dividers Operation ......... .
A5A4
Interconnect ............................................. .
A6
Frequency Output Assembly Description ...................... .
5 MHz-to-10 MHz Doubler
...................................... .
1 MHz Divider
................................................. .
100 kHz Divider ............................................... .
A7 AC Amplifier Description
..................................... .
A8
Phase Detector Description ........... \ ....................... .
A9
Operational Amplifier Description ............................ .
AlO
Quartz Crystal Oscillator Description ........................ .
Circuit Board Operation (A10) .......................... :; ..... .
All Cesium Oven Controller Description ......................... .
Cesium
Beam Tube .............................................. .
Cesium Beam Tube Physics (A12) .............................. .
Cesium
Beam Tube ............................................ .
Beam Tube Discrimination Action ............................. .
Cesium Beam Tube Test Input (LF Coil) ........................ .
4-1
4-2
4-2
4-2
4-3
4-3
4-7
4-14
4-14
4-15
4-15
4-16
4-17
4-18
4-19
4-20
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4-20
4-20
4-20
4-20
4-21
4-21
4-21
4-21
4-21
4-21
4-21
4-21
4-22
4-22
4-22
4-23
4-23
4-23
4-23
4-24
4-24
4-24
4-25
4-25
4-26
4-27
4-27
4-27
4-28
4-29
4-29
4-30
4-31
4-31
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Section
IV (Cont'd.) 4-285.
4-289.
4-293.
4-300.
4-303.
4-307.
4-310.
4-312.
4-315.
4-318.
4-320.
4-323.
4-325.
4-327.
4-329.
4-331.
4-334.
4-336.
4-338.
4-340.
4-342.
4-345.
4-347.
4-349.
4-352.
4-354.
4-355.
4-357.
TABLE OF CONTENTS (Continued)
HP 5061B
Table of Contents
Page
A13 Buffer Amplifier ............................................. 4-31
A14 Logic Assembly .............................................. 4-32
Second Harmonic Channel (A14) ................................ 4-32
Fundamental Channel (A14) .................................... 4-32
Integrator Limit Sensor (A14) .............. ,...................... 4-33
A15 Power Regulator Description ................................. 4-33
Input Rectifier and Filter (A15) ................................. 4-34
Standby Power Supply Gate (A15) ............................. : 4-34
+18.7V Regulator/Current Limiter (A15) ........................ 4-34
CoField Current Regulator (A15) ................................. 4-34
A16 Clock Display (Part of Option 003)/
A16 LED Display (Standard) Description ................ " 4-34
Front Panel LED Annunciators ................................. 4-35
A16 Counter and LCD Drive Circuitry .......................... 4-35
Oscillator/Divider (U14) ........................................ 4-35
Schmitt Trigger (U15) ........................................... 4-35
Seconds Stage .................................................. 4-35
Minutes Data Select ............................................ 4-35
Minutes Stage .................................................. 4-36
Hours Data Select .............................................. 4-36
Hours Stage .................................................... 4-36
Liquid
Crystal Display ........................................ " 4-36
A17 Terminal Board Description .................................. 4-36
(A18) +3500 VDC Power
Supply Description ....................... 4-37
Power Supply (A18) ............................................. 4-37
Ion
Pump Current Monitor (A15) ................................ 4-37
(A19) -2500 VDC
POWER SUPPLY ............................... 4-37
Power
Supply (A19) ............................................. 4-37
Electron Multiplier Regulator (A15) ............................. 4-37
V MAINTENANCE ......................................................... 5-1
5-1. Introduction .................................................... " 5-1
5-3. Safety Considerations ............................................ 5-1
5-5. HP 5061B Assembly Designations ................................ 5-1
5-7. Periodic Maintenance ............................................. 5-2
5-10. Standby Battery Periodic Maintenance (Part of Option 003) ....... 5-2
5-12. Circuit Check Switch and Meter Information ...................... 5-3
5-15. BATTERY Position ............................................. 5-3
5-17. SUPPLY Position............................................... 5-3
5-19. ION PUMP I Position .......................................... 5-3
5-21. OSC OVEN Position ............................................ 5-3
5-23. CS OVEN Position ............................................. 5-3
5-25. 5 MHz Position ................................................. 5-3
5-27. MULT Position ................................................. 5-3
5-29. BEAM I Position ............................................... 5-3
5-31. CONTROL Position ................... \'........................ 5-3
5-33. 2ND HARMONIC Position ..................................... 5-4
5-35. HP 5061B Cabinet Cover Removal ................................ 5-4
5-37. HP 5061B Troubleshooting or Problem Analysis ................... 5-4
5-40. Al Synthesizer Maintenance ...................................... 5-4
5-42. Al Synthesizer Operational Check .............................. 5-4
5-44. Al Synthesizer Troubleshooting ................................. 5-4
5-49. Test and Replacement of AlAI Y1, L2, and L3 ................... 5-6
5-51. Al Synthesizer Assembly Replacement and Adjustments ........ 5-7
5-53. A2 Battery Charger Maintenance (Part of Option 003) ............. 5-7
v
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HP 5061B
Table
of Contents
Section
V (Cont'd.)
vi
5-55.
5-57.
5-59.
5-64.
5-66.
5-68.
5-70.
5-72.
5-74.
5-76.
5-78.
5-80.
5-83.
5-84.
5-85.
5-87.
5-88.
5-90.
5-92.
5-94.
5-98.
5-100.
5-1Ol.
5-103.
5-105.
5-108.
5-109.
5-11l.
5-114.
5-116.
5-118.
5-119.
5-12l.
5-123.
5-125.
5-127.
5-129.
5-133.
5-135.
5-136.
5-138.
5-139.
5-14l.
5-144.
5-148.
5-15l.
5-153.
5-157.
5-162.
5-164.
5-166.
5-170.
5-173.
5-175.
5-177.
5-179.
5-183.
TABLE OF CONTENTS (Continued)
A3 Multiplier Maintenance ....................................... .
A3 Multiplier
Operational Check ............................... .
A3
Repair and Replacement Considerations .................... .
A3 Multiplier Replacement
Considerations ..................... .
A4
Harmonic Generator Maintenance ............................ .
A4
Operational Check and Fault Isolation ..................... .
A4
Replacement Considerations ................................ .
A5
Digital Divider Maintenance (Part of Option 003) ............. .
A6
Frequency Output Assembly Maintenance .................... .
A6
Operational Check ......................................... .
A6
Repair and Replacement Considerations .................... .
A6
Frequency Output Assembly ................................ .
A6 10 MHz
Adjustment Procedure .............................. .
A6 1 MHz Divider
Adjustment Procedure ....................... .
A6 100 kHz Divider
Adjustment Procedure ..................... .
A7 AC Amplifier
Maintenance ................................... .
A7 AC Amplifier Description
................................... .
A7 AC Amplifier
Operational Check ........................... .
A7 AC Amplifier Noise
Check .................................. .
A7 AC Amplifier Troubleshooting
.............................. .
A7 AC Amplifier
Repair or Replacement Considerations ........ .
A8
Phase Detector Maintenance ................................. .
A8
Phase Detector Description ................................. .
A8
Phase Detector Operational Check .......................... .
A8
Phase Detector Repair or Replacement Considerations ...... .
A9
Operational Amplifier Maintenance .......................... .
A9
Operational Amplifier Description .......................... .
A9
Operational Amplifier Check ............................... .
A9
Repair and Replacement Considerations .................... .
A9
Operational Amplifier Replacement Considerations ......... .
AlO Oscillator
Maintenance ...................................... .
A10 Description ............................................... .
A10 Oscillator Operational Checks ............................. .
A10 +15V Reference Supply Check ............................. .
Output Amplitude and Distortion Check ........................ .
A10 Electronic Frequency Control (EFC) Check ................ .
A10 Repair Considerations ..................................... .
A10 Oscillator Adjustments .................................... .
A10 Output Amplitude Adjustment ............................. .
A10 Oscillator Replacement .................................... .
All Cesium Oven Controller Maintenance ....................... .
All Cesium Oven Controller Description ....................... .
All Operational Checks ....................................... .
All Adjustments and Troubleshooting ......................... .
All Repair and Replacement Considerations ................... .
A12 Cesium
Beam Tube Maintenance ............................ .
A12
Warranty ........................... \ ....................... .
A12
Normal Operation ........................................... .
A12 Cesium
Beam Tube Failures ................................. .
Systemic Failures .............................................. .
End-of-Life
Failure ............................................. .
A12 Cesium
Beam Tube Specifications ........................... .
A12 Cesium
Beam Tube Operational Checks ..................... .
Low
Frequency (LF) Coil Check ................................ .
Microwave
Check .............................................. .
Beam Tube Signal Check ...................................... .
Signal-to-Noise Check
.......................................... .
Page
5-7
5-7
5-7
5-12
5-12
5-12
5-12
5-12
5-12
5-12
5-12
5-12
5-13
5-13
5-13
5-13
5-13
5-13
5-14
5-14
5-14
5-14
5-14
5-15
5-15
5-15
5-15
5-15
5-16
5-16
5-16
5-16
5-16
5-16
5-16
5-17
5-17
5-17
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5-17
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5-18
5-18
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5-20
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5-25
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Section
v (Cont'd.) 5-188.
5-190.
5-192.
5-194.
5-196.
5-198.
5-20l.
5-205.
5-207.
5-210.
5-212.
5-214.
5-216.
5-218.
5-220.
5-222.
5-225.
5-227.
5-229.
5-23l.
5-233.
5-234.
5-235.
5-236.
5-237.
5-239.
5-24l.
5-242.
5-244.
5-249.
5-250.
5-252.
5-254.
5-256.
5-258.
5-260.
5-26l.
5-263.
5-265.
5-267.
5-269.
5-273.
5-275.
5-277.
5-279.
5-28l.
5-283.
5-285.
5-286.
5-290.
5-292.
5-293.
5-294.
5-296.
5-298.
HP 5061B
Table of Contents
TABLE OF CONTENTS (Continued)
Page
A12 Cesium Beam Tube Replacement ............................. 5-26
Removal
of Cesium Beam Tube ................................. 5-26
Disposal Procedure for Hewlett-Packard Cesium
Beam Tubes .... 5-27
Cesium Beam Tube Installation ................................. 5-27
A12 Cesium
Beam Tube Adjustment Procedure .................. 5-29
Initial Beam I Adjustment ........................................ 5-29
Harmonic Generator Adjustments ................................. 5-29
Beam I Adjustment ............................................... 5-31
Beam Current Record ............................................. 5-32
Phase Modulation Frequency Adjustment ......................... 5-32
Phase Detector Zero Adjustment .................................. 5-32
Operational Amplifier Adjustments ............................... 5-32
Phase Modulation Amplitude Adjustment ......................... 5-33
Phase Modulation Phase Adjustment ............................. 5-33
Loop
Gain Adjustment ............................................ 5-34
Logic
Adjustments ................................................ 5-34
A13 Buffer Amplifier
Maintenance ................................ 5-35
A13
Replacement Considerations ................................ 5-35
A14 Logic
Assembly Maintenance ................................ 5-35
A14 Logic
Assembly Operational Checks ........................ 5-36
A14
Fundamental Channel Operational Check .................. 5-36
A14 Second
Harmonic Channel Operational Check .............. 5-36
A14
Integrator Limit Operational Check ........................ 5-36
A14
Synthesizer Operational Check ............................. 5-36
A14 Logic
Assembly Troubleshooting ........................... 5-37
A14
Replacement Considerations ................................ 5-37
A15 Power
Regulator Maintenance ................................ 5-37
A15
Power Regulator Description ............................... 5-37
A15 Power Regulator
Operational Checks ....................... 5-37
A15
Power Regulator Replacement Considerations .............. 5-37
A17
Terminal Board Maintenance ................................. 5-37
A18 +3500 Volt Power
Supply Maintenance ....................... 5-38
A18 +3500 Volt Power
Supply Replacement Considerations ...... 5-38
A19 -2500 Volt Power
Supply Maintenance ........................ 5-38
A19
Replacement Considerations ................................ 5-39
Time
Standard and Standby Power Supply
(Option 003) Maintenance ................................. 5-39
A2
Battery Charger Maintenance (Part of Option 003) ........... 5-39
A2
Battery Charger Operational Check ......................... 5-39
Battery Reconditioning ......................................... 5-40
Memory Effect .................................................. 5-40
Sustained Overcharge Effect .................................... 5-40
A2 Battery Charger Troubleshooting ............................ 5-40
A2 Battery Charger Removal and Replacement Instructions ..... 5-41
A5 Digital Divider Maintenance (Part Of Option 003) ............ 5-41
A5 Digital Divider Operational Check ........................... 5-41
A5 Preparation for Troubleshooting and ~djustments ........... 5-41
A5 Digital Divider Adjustments (Tuning) ........................ 5-41
A16 Clock Display and LED Display Assembly Maintenance .... 5-41
General Description ............................................. 5-41
A16 Operational Check ......................................... 5-42
Front Panel LED Operational Check ............................ 5-42
Front Panel Liquid Crystal Display Operational Check
(Option 003 only) ......................................... 5-42
A16 Pre-repair
Procedures. . . . .. . . . . . . .. . . .. . . . . . . .. . . . . . . . . . . . .. 5-43
A16
Assembly Removal ......................................... 5-43
A16 Troubleshooting
............................................ 5-44
vii
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HP 5061B
Table of Contents
List of Tables
viii
TABLE OF CONTENTS (Continued)
Section Page
V(Cont'd.). 5-301. A16 Power Supply Check ....................................... 5-44
5-303.
5-305.
5-307.
5-310.
5-313.
1PPS Input Check .............................................. 5-44
A16 LCD
Display Test .......................................... 5-44
A16
Data Selector Test .......................................... 5-44
A16
LED Troubleshooting ...................................... 5-45
After Service Product Safety Checks .............................. 5-46
VI REPLACEABLE PARTS ................................................. 6-1
6-1. Introduction. . . .. . .. . . .. . . . .. . . . . . .. . . . .. . . . . . . . . .. . . . . . .. . . . . .. .. 6-1
6-3. Abbreviations and Reference Designations ........................ 6-1
6-5. Replaceable Parts List ............................................ 6-1
6-10. Ordering Information ............................................. 6-1
6-13. Direct Mail Order System......................................... 6-1
VII MANUAL CHANGES .................................................... 7-1
7-1. Introduction. . . . . . .. . . .. . . . . .. .. . . .. . . .. . . . . . .. . . . . . .. . . . . .. . . . . . . 7-1
7-3. Manual Changes ................................................. 7-1
7-5. Newer Instruments ............................................. 7-1
7-7. Older Instruments .............. ,............................... 7-1
VIII CIRCUIT DIAGRAMS .................................................... 8-1
8-1.
8-3.
8-5.
Introduction ..................................................... .
Schematic Diagram Notes and Reference Designations ........... .
Safety Considerations ........................................... .
Appendix A Cesium Beam Tube Vacuum Check Following
8-1
8-1
•
8-1
HP 5061B Storage ......................................................... A-I
Appendix B Pumping the Cesium Beam Tube During Storage
When Tube is Stored While Removed from
the HP 5061B Chassis ..................................................... B-1
LIST OF TABLES
Table Page
1-1. Specifications ............................................................. 1-3
1-2. Equipment Supplied ...................................................... 1-6
1-3. Accessories Available ..................................................... 1-6
1-4. Recommended Test Equipment............................................ 1-7
2-1. 115/230 Volt Conversion .......................... ~....................... 2-2
2-2. Mating Connectors ....................................................... 2-3
3-1. Front-Panel LED Indications (Standard HP 506IB) ........................ 3-5
3-2. MODE Switch Functions ................................................. 3-6
3-3. Operating Checks (With CIRCUIT CHECK Switch) ....................... 3-6
3-4. Operator Adjustments .................................................... 3-10
3-5. In-Cabinet Performance Check ............................................ 3-15
4-1. Assembly Designations and Names ....................................... 4-2
4-2. General Qualifying Symbols .............................................. 4-4
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Table
4-3.
4-4.
4-5.
4-6.
4-7.
5-1.
5-2.
5-3.
5-4(a).
5-4(b).
5-4(c).
5-5.
5-6.
5-7.
5-8.
5-9.
5-10.
5-11.
5-12.
5-13.
6-1.
6-2.
6-3.
6-4.
7-1.
7-2.
Figure
LIST OF TABLES (Continued)
Qualifying Symbols for Inputs and Outputs .............................. .
Symbols Inside the Outline .............................................. .
Types
of Dependency Notation ........................................... .
Summary of Dependency Notation ....................................... .
Cesium
Oven ............................................................ .
HP 5061B Assembly Designations ........................................ .
HP 5061B Troubleshooting Chart ........................................ .
Al Synthesizer A1TP1 Output Period .................................... .
Al Synthesizer Troubleshooting Chart ................................... .
Al Synthesizer Troubleshooting Chart ................................... .
Al Synthesizer Troubleshooting Chart ................................... .
A3 Multiplier Circuit
Tuning ............................................. .
Input and Output Connections for A10 ................................... .
Cesium Oven Voltages ................................................... .
Factory Selected Resistors AllA1R6, R14, and R15 ....................... .
Beam Tube Signals Summary ............................................ .
Cesium Beam Tube Minimum Specifications ............................. .
A16
Switch Identication and Location .................................... .
A16 Test Voltages
....................................................... .
LED Troubleshooting .................................................... .
Reference
Designations and Abbreviations ............................... .
Replaceable
Parts, 506lE W/O Options ................................... .
Option 003 Replaceable Parts ............................................ .
Manufacturer's Code List ................................................ .
HP 5061B Instrument Backdating ........................................ .
HP 506lE Option 003 Manual Backdating ................................ .
LIST OF FIGURES
1-1. Model 5061B and Accessories ............................................ .
1-2. Frequency of Independently Aligned 5061A Cesium Beam Standards
with Option 004 High Performance Tubes ................................ .
2-1. Power Cable HP Part Numbers versus Mains Plugs Available ............ .
2-2. Conversion for Rack Mounting ........................................... .
3-1.
3-2.
3-3.
3-4.
3-5.
3-6.
3-7.
3-8.
3-9.
3-10.
3-11.
3-12.
3-13.
3-14.
Front Panel Controls .................................................... .
Top
Operating Controls .................................................. .
Rear-Panel
Controls ..................................................... .
Beam Current and Applied Frequency ............. ( ...................... .
Test Setup for C-Field Adjustment ........................................ .
Manual Clock Delay Adjust Test Setup ................................... .
Example One ............................................................ .
Example Two ............................................................ .
Harmonic and Non-Harmonic Distortion ................................. .
Vector
Voltmeter/Phase Comparator Calibration Test Setup .............. .
Accuracy Measurement Test Setup ....................................... .
Error Measurement ...................................................... .
Pulse Parameters ........................................................ .
Equipment Setup for Synchronization and Delay Checks ................. .
HP 506lE
List of Tables
List of Figures
Page
4-5
4-6
4-7
4-13
4-28
5-2
5-5
5-6
5-8
5-9
5-10
5-11
5-16
5-18
5-19
5-21
5-21
5-42
5-44
5-46
6-2
6-4
6-50
6-57
7-1
7-3
Page
1-0
1-5
2-2
2-3
3-1
3-3
3-4
3-8
3-9
3-11
3-12
3-13
3-16
3-18
3-19
3-20
3-20
3-22
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HP 5061B
List of Figures
LIST OF FIGURES (Continued)
Figure Page
4-l. HP 5061B Simplified Block Diagram ...................................... 4-1
4-2. Symbol Composition ...................................................... 4-3
4-3. Illustration of Common-Control Block ..................................... 4-3
4-4.
Illustration of Common-Output Element ................................... 4-3
4-5. G Dependency Between Inputs ............................................ 4-7
4-6. G Dependency Between Outputs and Inputs ............................... 4-7
4-7.
G Dependency with A Dynamic Input ..................................... 4-7
4-8. OR'ed Affecting Inputs ................................................... 4-8
4-9.
Substitution for Numbers ................................................. 4-8
4-10. V (OR) Dependency....................................................... 4-8
4-1l. N (Negate, X-OR) Dependency ............................................ 4-9
4-12. Z (Interconnection) Dependency ........................................... 4-9
4-13. X (Transmission) Dependency ............................................. 4-10
4-14. C (Control) Dependency ................................................... 4-10
4-15. S (Set) and R (Reset) Dependencies ........................................ 4-10
4-16. En (Enable) Dependency .................................................. 4-11
4-17. M (Mode) Dependency .................................................... 4-11
4-18. Type of Flip-Flop Determined by Mode .................................... 4-12
4-19.
Disabling an Output of the Common Control Block ........................ 4-12
4-20. Determining an Output Function .......................................... 4-12
4-2l.
Dependent Relationship Affected by Mode ................................. 4-12
4-22. A (Address)
Dependency .................................................. 4-13
4-23. RAM
Example ............................................................ 4-14
4-24. Four Types of Bistable Circuits ................. , .......................... 4-14
4-25. Coder
General Symbol .................................................... 4-14
4-26. An X/Y Code Converter .................................................. 4-15
4-27.
An X/Octal Code Converter ............................................... 4-15
4-28.
Coder Producing Several Dependencies .................................... 4-15
4-29.
Coder Producing One Type of Dependency ................................ 4-15
4-30. Use of Binary Grouping Symbol .......................................... 4-16
4-3l.
Input Labels .............................................................. 4-16
4-32.
Factoring Input Labels ................................................... 4-16
4-33. Placement of Three-State Symbols ........................................ 4-16
4-34. Output Labels ............................................................ 4-17
4-35.
Factoring Output Labels .................................................. 4-17
4-36.
Al Synthesizer Simplified Block Diagram ................................. 4-18
4-37.
Al Synthesizer Timing Diagram .......................................... 4-18
4-38. A2
Battery Charger Block Diagram (Part of Option 003) ................... 4-19
4-39. A6 Frequency Output Assembly Block Diagram ........................... 4-24
4-40. A8 Phase Detector Block Diagram ........................................ 4-26
4-4l.
Beam Tube Energy Levels ................................................ 4-30
4-42. Beam Tube Schematic .................................................... 4-30
4-43. Beam Tube Output Current ............................................... 4-31
4-44. Beam Tube Discrimination Action. . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-31
4-45. A14 Logic Block
Diagram ................................................. 4-33
4-46. A16 Clock
Display Block Diagram (Part of Option 003) .................... 4-36
5-l.
Al Synthesizer Operational Check Setup ........... \. . . . . . .. . . . . . . . . . . . . . . . 5-6
5-2.
Al Synthesizer Frequency Check Setup ................................... 5-6
5-3.
A3 Multiplier Power Measurement Test Setup ............................. 5-7
5-4.
A4-A12 Saturation Check ................................................. 5-23
5-5.
Top View of HP 5061B .................................................... 5-28
5-6. A4
Harmonic Generator Assembly ........................................ 5-31
5-7.
A8R42 Adjustment ........................................................ 5-34
5-8.
Signals In Phase (Segment Off) ........................................... 5-45
5-9.
Signals Out of Phase (Segment On) ....................................... 5-45
6-l.
Cabinet Parts ............................................................. 6-3
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HP 5061B
List of Figures
LIST OF FIGURES (Continued)
Figure Page
7-1. A6 Frequency Output Assembly Block Diagram (Series 2612) .............. 7-3
7-2. A6 Component Locator (Series 2612, Revision A) .......................... 7-4
7-3. A2 Schematic Diagram Backdating (Series 2612) .......................... 7-5
8-1. Schematic Diagram Notes ................................................ 8-1
8-2. Block Diagram ........................................................... 8-3
8-3. Front Panel and Top Internal Views ...................................... 8-4
8-4. Rear Panel and Bottom Internal Views .................................... 8-5
8-5. Wiring Diagram (Quartz Oscillator Frequency Control Loop) .............. 8-5
8-6. Wiring Diagram .......................................................... 8-7
8-7. AlAI Synthesizer Board Schematic Diagram(05061-6098),
Digital Section, Part of Al Synthesizer Assembly (05061-6158),
(Sheet 1
of 2) (Includes Component Locator) ....................... 8-9
8-7. AlAI Synthesizer Board Schematic Diagram (05061-6098),
Phase Locked Oscillator Section, Part of Al
Synthesizer Assembly, (05061-6158) (Sheet 2 of 2) .................. 8-11
8-8. A2 Battery Charger Board Schematic Diagram (05061-6175),
Part of Option 003 (Includes Component Locator) ................. 8-13
8-9. A3 Multiplier Board Schematic Diagram (05061-6106),
Part of A3 Multiplier Assembly (05061-6108),
(Includes Component Locator) ..................................... 8-15
8-10. A4A1 Harmonic Generator Board Schematic Diagram (05060-6037),
Part of A4 Harmonic Generator Assembly (05060-6029),
(Includes Assembly Photo and Component Locator) ............... 8-17
8-11. A5A1 10 MHz Multiplier
and 1 PPS Output Amps
Schematic Diagram (05061-6154),
Part of A5 Digital Divider Assembly (05061-6157),
Part of Option 003 (Includes Component Locator) ................. 8-19
8-12. A5A2 5-Volt
Regulator Schematic Diagram (05061-6155),
Part of A5 Digital Divider Assembly (05061-6157),
Part of Option 003 (Includes Component Locator) ................. 8-21
8-13. A5A3 1 PPS and Delay Generator Schematic Diagram (05061-6153),
Part of A5 Digital Divider Assembly (05061-6157),
Part of Option 003 (Includes Component Locator) ................. 8-23
8-14. A5A4
Interconnect Board Schematic Diagram (05061-6156),
Part of A5 Digital Divider Assembly (05061-6157),
Part of Option 003 ................................................ 8-25
8-15. A6A1
Frequency Output Board Schematic Diagram (05061-6184),
Part of A6 Frequency Output Assembly (05061-6185),
(Includes Component Locator) ..................................... 8-27
8-16. A7A1 AC Amplifier
Board Schematic Diagram (05061-6006),
Part of A7 AC Amplifier Assembly (05061-6005),
(Includes Component Locator) ..................................... 8-29
8-17. A8A1
Phase Detector Board Schematic Diagram (05061-6096),
Part of A8 Phase Detector Assembly (05061-6095),
(Includes Component Locator) ..................................... 8-31
8-18. A9A1 Operational Amplifier Board Schematic Diagram (05061-6135),
Part of A9 Operational Amplifier Assembly'(05061-6134),
(Includes Component Locator) ..................................... 8-33
8-19. AlOA2
Frequency Divider/Amplifier (05061-6199) and
AlOA3 Power Supply (05061-6198) Board Schematic Diagrams,
Part of A10 Oscillator Assembly (05061-6189),
(Includes A10 Assembly Photo and A10A2/ A10A3
Component Locators) ............................................. 8-35
8-20. Al1A1 Cesium Oven Controller Board Schematic Diagram (05061-6143),
Part of All Cesium Oven Controller Assembly (05061-6144),
(Includes Component Locator) ..................................... 8-37
Xl
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HP 5061B
List of Figures
LIST OF FIGURES (Continued)
Figure Page
8-21. A13A1 Buffer Amplifier Board Schematic Diagram (05061-6107),
Part of A13 Buffer Amplifier Assembly (05061-6030),
(Includes Component Locator) ..................................... 8-39
8-22. A14 Logic
Board Assembly Schematic Diagram (05061-6016),
(Includes Component Locator) ..................................... 8-41
8-23. A15 Power Regulator Board Assembly Schematic Diagram (05061,6176),
(Includes Component Locator) ..................................... 8-43
8-24. A16 Led
Display Board (05061-6179) Schematic Diagram,
(Part of Standard HP 506IB) (Includes Component Locator) ....... 8-45
8-25. A16 Clock
Display Board (05061-6178) Schematic Diagram,
(Part of HP 5061B Option 003) (Includes Component Locators) ..... 8-47
8-26. A17
Terminal Board Assembly (05061-6188),
(Includes Component Locator) . . . . . . . . . . . . . . . .. . . . .. . . . . . .. . . . . .. .. 8-49
8-27. A18 +3500 VDC
Power Supply (05061-6182) and
A19 -2500 VDC Power Supply (05061-6183) Schematic Diagram .... 8-51
8-28. BEAM I:
NORMAL Troubleshooting Chart ............................... 8-53
8-29.
BEAM I: HIGH Troubleshooting Chart ................................... 8-55
8-30. BEAM I: LOW Troubleshooting Chart .................................... 8-57
xii
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SAFETY CONSIDERATIONS
GENERAL
HP 506lE
Safety Considerations
This product and related documentation must be reviewed for familiarization with safety markings and
instructions before operation.
This product is a Safety Class I instrument (provided with a protective earth terminal).
BEFORE APPLYING POWER
Verify that the product is set to match the available line voltage and the correct fuse is installed. Refer
to Section II, Installation.
SAFETY EARTH GROUND
An uninterruptible safety earth ground must be provided from the mains power source to the product
input wiring terminals or supplied power cable.
rh OR .J..
SAFETY SYMBOLS
Instruction manual symbol; the
product will be marked with this
symbol when it is necessaryforthe
user to refer to the
instruction
manual.
Indicates hazardous voltages.
Indicates terminal is connected
to chassis when such
connection
is not apparent.
Alternating current.
Direct current.
I I The
WARNING sign denotes a
WARNING hazard. It calls attention to a
procedure, practice,
or the like,
which, if not correctly performed or adhered to,
could result in personal injury. Do not proceed
beyond a
WARNING sign until the indicated con-
ditions are fully understood and met.
~~~ ~=:~r~~~T~~I~ ~i~~nt~~~~tt~s a~
operating procedure, practice, or
the like, which, if not correctly performed or
adher.ed to, could result in damage to or destruc-
tion
of part or all of the product. Do not proceed
beyond a
CAUTION sign until the indicated con-
ditions are fully understood and met.
SAFETY INFORMATION
I WARNING I
Any interruption of the protective grounding conductor (inside or outside the instrument) or discon-
necting the protective earth terminal will cause a potential shock hazard that could result in personal
injury. (Grounding one conductor of a two conductor outlet is not sufficient protection.)
Whenever it is likely that the protection has been impaired, the instrument must be made inoperative
and be secured against
any unintended operation.
If this instrument is to be energized via an autotransformer (for voltage reduction) make sure the common
terminal is connected to the earthed pole terminal (neutral) of the power source.
Instructions for adjustments while covers are removed and for servicing are for use by service-trained
personnel only. To avoid dangerous ele9tric shock, do not perform such adjustments or servicing unless
qualified
to do so.
For
continued protection against fire, replace the line fuse(s) only with 250V fuse(s) of the same current
rating and type (for example, normal blow, time delay). Do not use repaired fuses or short circuited
fuseholders.
xiii
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HP 5061B
General I nfor m at ion
Figure 1-1. Model 5061B and Acc essories
l -O
I ..
o
~
(: h ,e
O ' ~
AC POW ER CABLE
508 7A
DISTRIBUTION AMP LIFI ER
(ACCES SOR Y)
SEE TA BLE 1 -3
10638A DEGAUSSER
HEWlETT · PACI(.ARD
OPERATING
POW
ER
-ON LO
10638A
DE GAU SSER
(
ACCESSORY )
SEE TABLE 1- 3
START
"
CURRENT
--'
HI
5061 B
------------- .... ______________ ~~ I
5089A
STANDBY POWER SUP PLY
( ACCESS ORY)
SEE
TABLE 1-3
--
DC POWER
CONNECTOR
AC CESSORY KIT
(I NCLUDED )
SEE T ABLE 1-2
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HP 5061B
General Information
SECTION I
GENERAL INFORMATION
1-1. INTRODUCTION
1-2. The Hewlett-Packard Model 5061B Cesium Beam
Frequency Standard is a compact, self-contained fre-
quency standard which uses a cesium beam tuberesona-
tor to stabilize the output frequency of a quartz crystal
oscillator. Solid state components and the closed-loop,
self-checking
control circuit provide excellent accuracy.
When the high-performance tube Option 004 is installed
in the HP 5061B, accuracy is increased. Available
output frequencies are 10 MHz, 5 MHz, 1 MHz, and
100 kHz. Figure 1-1 shows the HP Model 5061B and
accessories.
1-:3. In the beam tube, a state-selected beam of Cesium
1:33 atoms passes through a microwave cavity. When the
frequency of the applied microwave magnetic field,
derived by multiplying the quartz crystal oscillator
frequency, is near the hyperfine transition frequency of
Cesium 133 (9,192,631,770.0 Hz.), the microwave signal
induces transitions from one hyperfine energy level to
another. Those atoms which have undergone such a
transition are detected by a hot wire ionizer and electron
multiplier. The microwave field is frequency modulated
at a low frequency of 137 Hz. When the microwave
frequency deviates from the center of the atomic
resonance, the current from the electron multiplier
contains a frequency component which is the same as
the modulation frequency. The magnitude of this com-
ponent is proportional to the frequency deviation, and
the phase indicates whether the microwave signal is
above or below the transition frequency. This component
is filtered, amplified, and synchronously detected to
provide a dc voltage proportional to the frequency
deviaton. The integral of this dc voltage automatically
corrects the quartz oscillator frequency. The standard
cesium beam tube exhibits outstanding reliability for its
guaranteed life.
14. MANUAL SUMMARY
1-5. This manual is divided into eight sections, each
covering a particular topic for operation of the HP 5061B.
The topics by section are:
SECTION I, GENERAL INFORMATION. Provides the
instrument specifications, instrument identification,
description of options and accessories, and a list of
recommended test equipment.
SECTION II, INSTALLATION. Provides information
about initial inspection, storage and shipment, and
electrical power connections.
SECTION III, OPERATION. Provides information about
operating controls and indicators, operating modes
(including options), turn-on procedures, and in-cabinet
performance tests.
SECTION IV, THEORY OF OPERATION. Provides an
overall description of instrument operation and logic
symbology.
This is followed by a more detailed descrip-
tion of the instrument by assembly in order of reference
designator (AI, A2, A3, etc.).
SECTION V, MAINTENANCE. This section provides
maintenance and service information for the Model
H1' ,,)061B Cesium Beam Frequency Standard. Included
are troubleshooting aids, adjustment procedures, and
test setup diagrams.
SECTION VI, REPLACEABLE PARTS. Provides ordering
information for all replaceable parts and assemblies
within the instrument.
SECTION VII, MANUAL CHANGES. This section con-
tains manual change information which effectively
"backdates" the technical areas of the manual to apply
to older instruments.
SECTION VIII, CIRCUIT DIAGRAMS. This section con-
tains the block, wiring, schematic, waveform, and
component location diagrams for the HP 5061B. (Time
Standard and Standby Power Supply Option 003 are
included.)
1-6. OPTIONS
1-7. Several options are available. They are:
a. Option 003 Time Standard and Standby Power
Supply: This option includes a 24-hour clock dis-
play and switches to allow the clock display to be
set to the nearest second. A one pulse-per-second
output at front and rear panel BNC connectors is
provided by this option. An internal "sync" button
permits automatic synchronization of the 1PPS
output to an external "sync" pulse. By the use of
seven lO-position thumbwheel switches, the out-
put clock pulse is adjustable from 0.1 microseconds
to one second with respect to a reference pulse.
Standby power capability for a minimum of 45
minutes is 'provided by an internal battery. Re-
charging occurs internally whenever the battery
is not supplying power to the instrument. A front
panel LED indicates when the battery is being
used.
b.
Option 004 High Performance Cesium Beam Tube:
(see Table
1-1 for performance specifications)
Option 004 provides improvement in specifications
such as accuracy, settability, reproducibility, and
short-term stability.
1-1
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HP 5061B
General Information
c. Option 908 Rack Mounting Kit is available, at
additional cost, when ordered at the same time as
the HP 5061B. If ordered separately, the rack
mounting kit is HP Part Number 5060-8742.
d. Option 910 adds a second copy of the Operating
and Service manual at additional cost when
ordered at the same time as the HP 5061B.
1-8. TERMINOLOGY
1-9. The following definitions apply to terms used:
a.
UNIVERSAL COORDINATED TIME (UTC). An
internationally agreed upon time scale which has
the same rate as AtomicTime. UTC is corrected by
step adjustments of exactly one second, as needed
to
remain within 0.7 seconds of Astronomical Time
(UTI). The "Bureau International de L'Heure"
(BIH) determines when step adjustments are
needed.
b. ATOMIC TIME.
Time scale based on the hyperfine
resonance of Cesium 133.
c. CESIUM BEAM TUBE. Passive atomic resonator
using the hyperfine resonance of Cesium 133.
d. "C" FIELD. Magnetic field within the cesium
beam tube for fine frequency adjustments.
e. ZEEMAN TRANSITIONS. Transitions excited by
application of the Zeeman frequency. These addi-
tional energy levels in the hyperfine structure are
caused by applying the "C" field (Zeeman split-
ting).
They are used to accurately measure the
magnetic field inside the beam tube.
f. LOW FREQUENCY TRANSITIONS. These fre-
quencies
appear in the spectrum and are depend-
ent upon the "C" field value. They can be excited
independent of the microwave power source.
g. MASS
SPECTROMETER. Directs cesium ions to
the electron multiplier and prevents impurity ions
from reaching the electron multiplier.
1-2
h. HOT WIRE IONIZER. Heated tantalum ribbon
ionizes cesium atoms which strike it.
1. ELECTRON MULTIPLIER. Amplifies the elec-
tron current initiated by a cesium ion striking the
first dynode.
j. BEAM CURRENT.
Current resulting from the
action of the hot wire ionizer and electron mul-
tiplier.
k. ION PUMP. Maintains a vacuum in the cesium
beam tube by continuously pumping when the
HP 5061B is on.
1-10. SPECIFICATIONS
1-11. Table 1-1 lists the technical specificationsfor the
HP 5061B. Specifications describe the instrument's
warranted performance. Supplemental characteristics
are intended to provide information useful in applying
the instrument by giving TYPICAL or NOMINAL, but
non warranted performance parameters.
1-12. INSTRUMENT IDENTIFICATION
1-13. Hewlett-Packard instruments have a lO-character
serial number (OOOOAOOOOO). The four-digit serial prefix
identifies
instrument changes. The five-digit number is
the serial number of each instrument. If the serial prefix
does
not appear on the title page of the manual, there are
differences between your instrument and the manual. A
manual supplement included with the manual describes
the differences. If the supplement is missing, contact the
nearest Hewlett-Packard Sales and Service office listed
on the inside rear cover of this manual.
1-14. SAFETY CONSIDERATIONS
1-15. The Model 5061B is a Safety Class I instrument
provided with a protective earth terminal. The instru-
ment is designed and tested to international standards.
Safety information pertinent to the operation and
servicing of this instrument is included iIi appropriate
sections of this manual.
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HP 5061B
General Information
Table 1-1. Specifications
Standard Option 004 High
Beam Tube
Performance Beam Tube
Accuracy(1):
Maintained over a temperature range of 0 to 50°C and
magnetic fields up to 0.2 millitesla (2 gauss) or any combination
thereof. ±IXlO-11 ±7xlO-12
Accuracy - Limited Temp. Range(5) ±6xlO-12 ±4XlO-12
Reproducibility(1)
(2)
±5XlO-12
±3xI0-12 (3)
Retrace(1)
±6xl0-12 ±lxI0-12 (6)
Settability (Frequency) (1)
±7XlO-13 ±IXlO-13
(3)
Long-term stability (for life of cesium beam tube) ±3XlO-12
±2xI0-12
DC Magnetic Field Stability, frequency change, any orientation in a
2
gauss field. ±2XlO-12
±2xI0-13
Time Constant, quartz oscillator control loop (TO) 1
and 60 s(4)
1 s
Warm-up
time at 25°C 45
min.
30 min.
Beam Tube Warranty
3 years 1 year
FREQUENCY STABILlTY(1), 5 MHz PHASE NOISE. 5 MHz
10-8
°
I
PH1E NoIE 1 1 BW
FRACTIONAL FREOUENCY STABILITY
i'
/ 0{l,
til 12, T)
20 . '\
10.
9
~/
\
Std. Tube
40'" '
'~TO' 1 sec
10-
'°
~
I I
"-
~,TO
60 sec
.........
Standard Tube
..... 1TO. 1 soc -
60
.:\: \
-
10.
11
~
" \
f-.
'c=.~ -,:::::: ..,::,....- ~ " 60 sec -
~ \
-
C\I -
80
-
10.
12
OptIon 004 Tulle
~
" y
OP"O"OO4~
>-
TO -1
so<
"
........ ---
Tube TO 1 sec
\
b
!"--......
10-
13
100
'\,
I I " , , ,
I
'" 12O
10.
14
I--- !Sys1em BW 100 kHlj
'"
'0-
'5
'.0
10.
16 SEE
NOTE 7
160
10-
3
10.
2
10·'
10°
10
'
10
2
10
3
10
4
10
5
10
6
10.
3
10.
2
10·'
10°
'°
'
10
2
10
3
10
4
10
5
10
6
T- SECONDS
OF FSET FROM SIGNAL
H',
Notes:
(1) See definitions, page 1-5
(6)
With degaussing - Retrace is less than ±2XI0-12
(2) See Figure 1-2
without degaussing
(3) With 10638A Degausser
(7)
For values
of T(S) > 104 seconds, instruments
(4) Use 60 second time constant for increased short-
are not subjected to frequency stability testing on a
term stability in controlled environments.
regular basis. This portion of the curve
(i.e.,
(5) Over any ±2.5°C Range at any temperature be- T(S)
>104 seconds) provides information useful in
tween 15 and 35°C
formulating applications for the HP 5061B.
FREQUENCY STABILITY· PHASE
NOISE:
(dB Below the Carrier)
T (5)
Standard Tube Option 004
Tube
j,f
Standard Tube Option 004 Tube
10-3 8.2 x 10-10 8.2 X 10-10 10-3 \
-8
-28
10-2 1.5 x 10-10 1.5 X 10-10 10-2
-28 -48
10-1 5.6 x
10-11
1.5 X 10-11
10-1
-48 -68
100
5.6 x 10-11 5 X 10-12
100 -82
-96
101
2.5 x 10-11 2.7 X
1O-l-2
101
-120 -120
102
8 x 10-12 8.5 X 10-13
102
-125 -125
103
2.5 X 10-12 2.7 X 10-13
103
-140 -140
104
8 X 10-13 8.5 X 10-14
106 -146 -146
*These measurements are made with a servo loop
*These measurements are made with a servo loop
time constant of 1 sec. (TO = 1 second)
time constant of 1 sec. (TO = 1 second)
1-3
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HP 5061B
General Information
Table 1-1. Specifications (Continued)
1-4
SINUSOIDAL OUTPUTS
10 MHz, 5 MHz, 1 MHz, and 100 kHz, front and rear
panel BNC.
Output Voltage: >1 Vrms into 50 ohms.
Harmonic Distortion: Down more than 40 dB from rated
output.
Non-Harmonically Related Output: Down more than
80 dB from rated output.
QUARTZ OSCILLATOR
The high quality internal oscillator may be used without
turning on the cesium beam tube.
Aging Rate: <5 x 10-10 per 24 hours.
Frequency Adjustments:
Fine: 5 x 10-8
range, with dial reading parts in 1010
(nominal).
Coarse: 1 x 10-6 range, screwdriver adjustment at
front panel.
ENVIRONMENTAL:
Temperature: Operating, 0 to 50°C. Stability for high
performance (Option 004) beam tubes, <±5 x 10-12
change over 0 to 50°C range. For the standard tube,
<±5 x 10-
12
change from 25°C reference. Non-operating,
<-40 to +75°C.
Supplemental Characteristics (Typical):
Production units have passed type testing as follows:
Humidity: Operating, to 95% at 40°C.
Altitude: <2 x 10-12 change up to 12.2 km (40,000 ft.)
operating.
AC Magnetic Field: Less than 2 x 10-12 for 0.2 milli-
tesla (2 gauss) peak for 50, 60 or 400 Hz fields.
Shock: MIL-T-28800C, Class 3 (30 g's, 11 ms)
Vibration: Meets the provisions of MILT-28800C
(survival only) and MIL-STD-167-1.
EMI: MIL-STD-461B, Part 7, Class B (CE03 broad-
band requires relaxation of 20 dB below 40 kHz).
POWER: 115V ±10%, 48 to 440 Hz, 230V ±1O%, 48 to
66 Hz, or 22 to 30 Vdc.
Approximate power required:
DC
AC
5061B and 5061B
with Option 004 30W
44W
Option 003
Add5W Add 16W
Note: The above figures do not apply during instru-
ment warmup.
NET WEIGHT: 29.1 kg (64 lbs); Option 003, add 2.7 kg
(6 lbs.); Option 004, add 1.8 kg (4 lbs.); Options 003 &
004, add 4.5 kg (10 lbs.). Add 9.1 kg (20 lbs.) for stan-
dard instrument's and 25 kg (55 lbs) for Option 004
instrument's shipping weight.
ACCESSORIES FURNISHED: Power Cord, 180 cm (6 ft.),
detachable. Accessory Kit, HP 05061-6070, includestwo
extender boards, test cables, maintenance tools, and a
mating connector 1251-0126 for EXT DC input.
ACCESSORIES AVAILABLE: EXT DC cable connects
5061B to 5089A Standby Supply, 05089-60101. 10638A
Degausser for use with Option 004 High Performance
Tube. See page 1-6 for details. Rack Mounting Kit,
Option 908.
DIMENSIONS:
NOTE·
DIMENSIONS IN MILLIMETRES .a.ND (INCHES)
1-0 --<83('91~-I
I~
SIDE
I REAR I~
MATING CONNECTORS:
EXT DC Input: 1251-0126 (5-contact), Cannon MS
3106E-14S-5S (Series ME) furnished.
AC Line: 1251-2457, Cannon MS3106A-18-22SW.
Degausser: 1251-2797, Bendix PT06A-14-18P1005.
WARRANTY: Instrument, 1year; optional battery, 1 year
(see page 1-3 for beam tube warranty).
OPTION 003
TIME STANDARD AND STANDBY POWER SUPPLY
TIME STANDARD
CLOCK DISPLAY: 24 hour LCD readout in hours, minutes,
and seconds driven by Clock Pulse.
Rate: 1 pulse-per-second.
Amplitude: +lOV ±1O% peak.
Width: 20 J.Lsec minimum.
Rise Time: <50 ns.
Fall Time: <50 ns.
Jitter: <1 ns rms pulse-to-pulse and pulse-to-5 MHz.
Output: Buffered front and rear BNC connectors. All
specs
are with 50n load.
SYNCHRONIZATION (REAR BNC): Automatic, 100 ns
(±100 ns) delayed from the reference input pulse.
Manual adjustable to <±50 ns. Reference pulse must be
>+5V,
with a rise time of <50 ns.
STANDBY POWER SUPPLY
CAPACITY: 45 minutes minimum at 25°C at full charge
from sealed nickel-cadmium batteries.
CHARGE CONTROL: Automatic when ac power is con-
nected.
INDiCATOR: A front panel light flashes when ac power
is interrupted and battery is being used.
OPTION 004
HIGH PERFORMANCE CESIUM BEAM TUBE
Replaces standard beam tube and may be installed with
any of the above options. See page 1-3 for specifications
and warranty. For optimum performance, the 10638A
Degausser should be ordered.
Scans by ArtekMedia => 2011