HP 5340A Service manual

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5340A Frequency Counter Operating and Service Manual
05340-90021
September 1975

p.
OPERATING AND SERVICE MANUAL
$ , I
I
FREQUENCY
COUNTER
5340A
HEWLETT
P! PAC KA R D

MODEL 5340A
FREQUENCY COUNTER
OPERATING AND SERVICE MANUAL
SERIAL PREFIX: 1532A
This manual applies directly to Hewlett - Packard
Model
5340A Frequency Counters with serial prefix
number
1532A.
SERIAL PREFIXES NOT LISTED
For serial prefixes above 1532A, a “Manual Change”
sheet
is included with this manual. For serialprefixes
below
1532A, refer to Section VII of this manual.
Manual Part No. 05340 - 90021
Microfiche Part No. 05340 - 90022
PRINTED IN U.S.A.
SEPTEMBER 1975
Copyright HEWLETT-PACKARD COMPANY 1973
5301 STEVENS CREEK BLVD., SANTA CLARA, CALIF. 95050
I
I
TABLE OF CONTENTS
Warnings and Cautions
I
[i 1 ’
I
I
lit)/ - GENERAL
Specifications
Equipment Supplied
INSTALLATION
Initial Set Up,
Programming
I
/
OPERATION
Front and Rear Panel
Controls and Connectors
Operating Procedures
I
THEORY
Block Diagram Theory,
Circuit Theory,
I.C.
Theory
I
MAINTENANCE
Troubleshooting,
Adjustments,
Specification Verification
I
MANUAL CHANGES AND OPTIONS
Manual Backdating,
Option Description and Installation
HEWLETT
PACKARD
I
CIRCUIT DIAGRAMS
Schematics, Component
Locators, Waveforms,
Block Diagrams

Model 53406
Table of Contents
TABLE OF CONTENTS
Page
I
Section
I I: ' '
I GENERAL INFORMATION .................... I . 1. ...................... 1 - 1
I1
I
I11
. i I
1 - 1 . Descripton ............................... .r ...................... 1 - 1
1 - 4 . 1 - 1
1 - 8 . Applications ..................................................... 1 - 1
1 - 10 . Options .......................................................... 1 - 1
1 - 12 . Equipment Supplied and Accessories Available ................... 1 - 1
INSTALLATION AND REMOTE PROGRAMMING ...................... 2 - 1
2
- 1 . Introduction ...................................................... 2 - 1
2
- 3 . Unpacking and Inspection ....................................... 2 - 1
2
- 5 . Installation Requirements ........................................ 2 - 1
2
- 11 . Repacking for Shipment .......................................... 2 - 2
2
- 17 . What Can Be Programmed ................................... 2 - 2
2
- 20 . Bus Description .............................................. 2 - 3
2 - 25 . Data Transfer ................................................ 2 - 6
2
- 29 . Addressing the 5340A ........................................ 2 - 7
2
- 34 . Example of Setting anAddress ............................... 2 - 9
2
- 38 . Line Characteristics .......................................... 2 - 9
2-40.' Hardware .................................................... 2 - 11
2
- 44 . Programmingthe 5340A ...................................... 2 - 11
2
- 47 . What is Outputted ............................................ 2 - 15
2
- 50 . Modes of Operation .......................................... 2 - 16
2
- 53 . Starting a Measurement Procedure ........................... 2 - 18
2
- 55 . Examples of Programming ................................... 2 - 18
OPERATION ............................................................ 3 - 1
3 - 1 . Introduction ...................................................... 3 - 1
3 - 3 . Operating Characteristics ........................................ 3 - 1
3 - 5 . Operating Ranges ............................................ 3 - 1
3 - 8 . Resolution and Blanking ..................................... 3 - 1
3 - 11 . Sample Rate, Measurement Time, and Reset .................. 3 - 2
3 - 15 . AM Characteristics ........................................... 3 - 2
3
- 17 . FM Characteristics ........................................... 3 - 2
3 - 19 . Auto - Amplitude Discrimination .............................. 3 - 3
3 - 21 . Maximum Input Signal Power .................................... 3 - 3
3 - 23 . Input Cable Considerations ....................................... 3 - 4
3
- 28 . Operating Procedures ............................................ 3 - 4
Instrument Identification
............... ,. ... ., ... r' .................
2 - 13 . Environment During Storage and Shipment ...................... 2 - 2
2
- 15 . Remote Programming and Digital Output ......................... 2 - 2
3 - 26 . Controls, Indicators, and Connectors ............................. 3 - 4
IV THEORY OFOPERATION ..............................................
4.1 . Introduction ......................................................
4.3 . Logic Elements ...................................................
4.7 . 5340A Integrated Circuits - Theory of Operation .................
4.9 . 256 - Bit Read - Only - Memories 1816.0003, 1816.0004, 1816.0184,
and 1816 - 0185 ........................................
4.13 . Decade Counter 1820 - 0055 ....................................
4.15 . J - K Flip - Flop 1820 - 0065 .....................................
4.17 . Dual D - Type Edge - Triggered Flip - Flop 1820 - 0077 ............
4.19 . Monostable Multivibrator 1820 - 0207 ..........................
4.23 . Four - Line to Ten - Line Decoder 1820 - 0214 ....................
4.25 . Operational Amplifier 1820 - 0216 .............................
4.27 . Monostable Multivibrator 1820 - 0261 ..........................
4.29 . Differential VideoAmplifier 1820 - 0270 ........................
4.31 . Eight - Bit Serial - In Parallel - Out Shift Register 1820 - 0294 .....
4.33 . BCD to Decimal Decoder 1820 - 0426 ...........................
4.35 . Voltage Comparator/Buffer 1820 - 0475 ........................
4 - 1
4
- 1
4
- 1
4
- 3
4
- 3
4
- 4
4
- 5
4
- 6
4
- 6
4
- 8
4
- 8
4
- 8
4
- 9
4 - 10
4 - 10
4
- 10
\
I
..
11

!>
4.3
Model 5340A
Table of Contents
TABLE OF CONTENTS (Continued)
Section 1 Page
/i': '
IV THEORY OFOPERATION (Continued)
4
- 37 .
4 - 39 .
4 - 41 . Dual NAND Schmitt Triggers 1820 - 0537 ...................... 4 - 13
4 - 43 . EECL High - speed D - Binary 1820 - 0557 ....................... 4 - 13
4 - 45 . Dual Two - Input Logic Switch 1820 - 0560 ...................... 4 - 14
4
- 47 . Dual D - Type Edge - Triggered Flip - Flops 1820 - 0596 ........... 4 - 14
4
- 49 . Four - Input Multiplexer 1820 - 0610 ............................ 4 - 14
4.51 . Eight - Input Multiplexer 1820 - 0615 ........................... 4 - 16
4.53 . Quad 2 - Input Multiplexer 1820 - 0616 .......................... 4 - 16
4.55 . Data Selectors/Multiplexers 1820 - 0640 ........................ 4 - 17
4.57 . Eight - Input Priority Encoder 1820 - 0657 ...................... 4 - 18
4.59 . Low - Power 4 - Bit Shift Register 1820 - 0659 .................... 4 - 19
4.61 . Low - Power BCD Decade Counter 1820 - 0669 .................. 4 - 20
4.65 . Five - Bit Comparator 1820 - 0706 .............................. 4 - 20
4.69 . Synchronous Four - Bit Counter 1820 - 0716 ..................... 4 - 23
4.71 . Presettable Decade Counter/Latch 1820 - 0751 ................. 4 - 23
4.73 . EECL Differential Amplifier/Limiter 1820 - 0754 ............... 4 - 24
4.75 . Presettable Binary Counter/Latch 1820 - 0765 ................. 4 - 25
4.77 . Hex D - Type Flip - Flops 1820 - 0788 ............................ 4 - 25
4.79 . Quadruple D - Type Flip - Flops 1820 - 0839 ...................... 4 - 25
4.81 . Low Power 5 - Bit Comparator 1820 - 0904 ...................... 4 - 26
4.83 . Four - Bit Binary Full Adder 1820 - 0910 ........................ 4 - 26
4.85 . EECL Bi - Quinary Counter 1820 - 1019 ......................... 4 - 26
4.87 . BCD to Decimal Decoder 1820 - 1047 ........................... 4 - 28
4.89 . Voltage Regulator 1826 - 0010 ................................. 4 - 28
4.91 . Voltage Regulator 1826 - 0016 .................................. 4 - 28
4.93 . OperationalAmplifier 1826 - 0021 ............................. 4 - 28
4.95 . Voltage Comparator/Buffer 1826 - 0026 ........................ 4 - 30
4.97 . Dual Operational Amplifier 1826 - 0073 ........................ 4 - 30
4.99 . Dual Differential Amplifier 1858 - 0004 ........................ 4 - 31
4.101 . Transistor Array 1858 - 0018 .................................. 4 - 31
4.103 . Simplified Block Diagram Description ............................ 4 - 32
4.110 . Overall Theory of Operation ...................................... 4 - 32
4.112 . Input Circuits ................................................ 4 - 32
4.114 . Input Phase Lock Loop ....................................... 4 - 33
4.122 . Transfer Phase Lock Loop .................................... 4 - 34
4.124 . Harmonic Determination Circuitry ........................... 4 - 35
4.126 . Sampling Theory ................................................. 4 - 35
4.132 . Sampler Driver ............................................... 4 - 36
4.134 . When SamplingOccurs ....................................... 4 - 36
4.137 . 4 - 37
4.141 . A2 Preamplifier Assembly No . 2, 05340 - 60027 ..................... 4 - 37
4.144 . A3 High - Impedance Input Amplifier Assembly, 05340 - 60001 ...... 4 - 37
4.149 . A4 Phase DetectodQuad Detector Assembly, 05340 - 60002 ......... 4 - 38
4.154 . A5 Search Assembly, 05340 - 60003 ................................ 4 - 38
4.156 . A6 Search Programmer Assembly, 05340 - 60004 ................... 4 - 39
4.160 . A7 DC Amplifier/Compensator No . 1 Assembly, 05340 - 60005 ..... 4 - 39
4.162 . A8 Bandpass Filter/Phase Detector Assembly, 05340 - 60006 ....... 4 - 39
4.169 . A9 DC Amplifier/Compensator No . 2 Assembly, 05340 - 60007 ..... 4 - 40
4.175 . A10 VCO No . 2 Assembly,05340.60008 ........................... 4 - 42
4.182 . AllMixerAssembly,05340.60009 ................................ 4 - 42
4.184 . A12 VCO No. 1 Assembly, 05340 - 60008 ........................... 4 - 42
4.186 . A13 Limiter/Amplifier Assembly, 05340 - 60010 .................... 4 - 43
4.188 . A14 Limiter/Amplifier/Mier Assembly, 05340 - 60011 ............. 4 - 43
4.191 . A15 10MHz Doubler Assembly, 05340 - 60012 ...................... 4 - 43
Binary to Decimal Decoder 1820
- 0495 .. '. ......................
Dual Monostable Multivibrator lSZO-OS'i5 . .I .. ._ ................
4 - 11
4 - 12
4.67 . Low - Power Quad Two - Input Multiplexer 1820 - 0710 ........... 4-20
A1 Preamplifier Assembly No . 1,05340.60017 .....................
...
111

Model 5340A
Table of Contents
I
TABLE OF CONTENTS (Continued)
Section I Page
4.194 . A17A1 Direct Counter Amplifier Assembly. Od3 0 - 60038 .......... 4 - 43
4.200 . A18 Standard Oscillator Assembly. 05340-60036 .................. 4 - 44
4.202 . A18 Option 001 Oscillator Assembly. 10544&/ .... ./ ... r ..............
4 - 44
4
- 205 . A19 Interface A Assembly, 05340 - 60031 andA27 Resolution Switch
Assembly. 05340
- 60026 ............................... 4 - 44
4
- 212 .
4 - 45
4
- 229 . A20 Time Base Assembly, 05340 -- 60073 .......................... 4 - 47
4
- 247 . A22 High Frequency Counter Assembly, 05340 - 60016 ............. 4 - 49
4
- 251 . A23 Counter Register Assembly, 05340 - 60030 ..................... 4 - 49
IV THEORY OFOPERATION (Continued) y '
A19 Interface B Assembly 05340 - 60032 (Part of Option 011) .......
4 - 236 . A21 Control Assembly, 05340 - 60021 .............................. 4 - 48
4
- 255 . A24 Display Register Assembly, 05340 - 60019 ..................... 4 - 50
4
- 258 . A25 Display Assembly, 05340 - 60020 .............................. 4 - 50
4
- 265 . A26 Blanking Assembly, 05340 - 60037 ............................ 4 - 51
4
- 267 . Power Supplies ................................................... 4 - 51
(Part of Option 001) .................................. 4 - 51
4
- 269 .
4 - 273 . A32 +5 Volt Regulator Assembly, 05340 - 60023 ................ 4 - 52
4
- 278 . A29 +15 Volt Regulator Assembly, 05340 - 60025 ............... 4 - 53
4
- 280 . A28 - 15 Volt and +175Regulator Assembly, 05340 - 60022 ...... 4 - 53
4
- 283 . A31 - 5 Volt Regulator Assembly, 05340 - 60024 ................. 4 - 54
4
- 285 . A34 Bus Communicator Assembly, 05340 - 60067
(Part of Option 011) .................................. 4 - 54
4
- 287 . Talk Mode ................................................... 4 - 54
4
- 290 . Listen Mode .................................................. 4 - 54
A33 Optional Oscillator Power Supply Assembly, 05340
- 60039,
V MAINTENANCE AND SERVICE
........................................ 5 - 1
5.1 . Introduction ...................................................... 5 - 1
5.3 . Assembly Designations ........................................... 5 - 1
5.5 . Test Equipment .................................................. 5 - 1
5.7 . Pozidriv Screwdrivers ............................................ 5.1 .
5.9 . Adjustments and In - Cabinet Performance Check ................. 5 - 1
5.11 . Blower Fan Configuration ........................................ 5-1
5.13 . K05 - 5340A Description ........................................... 5 - 1
5.16 . Program Control Flow Diagrams ................................. 5 - 14
5.24 . Overall Troubleshooting .......................................... 5 - 17
5.26 . A20 N Checker Troubleshooting .............................. 5 - 18
5.35 . A21 Troubleshooting ......................................... 5 - 19
5.39 . Power Supply Troubleshooting ............................... 5 - 20
VI REPLACEABLE PARTS ................................................. 6 - 1
6.1 . Introduction ...................................................... 6 - 1
6.4 . Ordering Information ............................................ 6 - 3
6.7 . HP Part Number Organization ................................... 6 - 3
6.9 . Component Parts and Materials .............................. 6 - 4
6.12 . General Usage Parts ......................................... 6 - 4
6.14 . Specific Instrument Parts .................................... 6 - 4
VII MANUAL CHANGES AND OPTIONS ................................... 7 - 1
7.1 . Introduction ...................................................... 7 - 1
7.5 . New Instruments ............................................. 7 - 1
7
- 7 . Older Instruments ............................................. 7 - 1
7
- 9 . Options .......................................................... 7 - 16
7
- 11 . Option 001, High - Stability Oscillator ......................... 7 - 16
7
- 13 . Option 002, Rear Panel Connectors ........................... 7 - 16
7
- 15 . Option 011, Remote Programming and Digital Output .........
7 - 16
7
- 19 . Field Installation of Options ...................................... 7 - 16
7
- 20 . Installation of Option 001, High - Stability Oscillator .......... 7 - 16
7.3 . Manual Changes ................................................. 7 - 1
iv

Model 5340A
Table of Contents
List of Tables
TABLE OF CONTENTS (Continued)
VII
MANUAL CHANGES AND OPTIONS (Continued) I /
7.23 . Installation of Option 002. Rear Panel Connectors ............ 7 - 18
7.26 . Installation of Option 011. Digital Inpuh'Output: .............. 7 - 19
VIII SCHEMATIC! DIAGRAMS ............................................... 8 - 1
Table
1.1 .
1.2 .
1.3 .
2.1 .
2.2 .
2.3 .
2.4 .
2.5 .
2.6 .
4.1 .
4.2 .
5.1 .
5.2 .
5.3 .
6.1 .
6.2 .
6.3 .
6.4 .
6.5 .
6.6 .
7.1 .
7.2 .
8.1 .
..
8.1 . SchematicDiagrams ............................................. 8 - 1
Reference Designators ................................ 8 - 1
8 - 5 . Reference Designations ....................................... 8 - 1
8.8 . Identification Markings on Printed - Circuit Boards ............ 8 - 1
8.12 . Assembly Locations and Component Locators .................... 8 - 1
8 - 14 . Mnemonics and Abbreviations ................................... 8 - 2
8.3 .
SchematicDiagram Notes, Assembly Numbers. and
LIST OF TABLES
Page
Equipment Supplied
...................................................... 1 - 2
Accessories Available
.................................................... 1 - 2
Specifications
............................................................ 1 - 3
Relation of ATN andthe Handshake Lines (RFD. DAC. DAV) ............
2 - 5
Talk and Listen Addresses
............................................... 2 - 8
Program Code Set
........................................................ 2 - 10
5340A Program Code Set ................................................. 2 - 13
5340A Output Code Set ...................................................
5340A Programming Example ............................................ 2 - 19
2
- 15
Example ROM Programming for the Equation Y=2X+1
.................... 4-4
Time Base Signal Selection ...............................................
4 - 47
Assembly Identification
.................................................. 5 - 2
Recommended Test Equipment
........................................... 5 - 3
In - Cabinet Performance Check ........................................... 5 - 13
Replaceable Parts. 5340A Standard Instruments .......................... 6 - 5
5340A Mechanical Parts .................................................. 6 - 33
Replaceable
Parts. Option 001 ............................................ 6 - 34
Replaceable
Parts. Option 002 ............................................ 6 - 35
Replaceable
Parts. Option 011 ............................................ 6 - 36
Manufacturers Code
List ................................................. 6 - 38
Manual Backdating
...................................................... 7 - 1
A20 Time Base Board Assembly (Series 1236A). Replaceable Parts
.......... 7 - 6
5340A Mnemonics andAbbreviations ..................................... 8 - 2
V

Model 5340A
List of Figures
Figure
I 1.1 .
2.1 .
2.2 .
2.3 .
2.4 .
2.5 .
2.6 .
I 3.1 .
‘ 3.2 .
3.3 .
3.4 .
3.5 .
3.6 .
4.1 .
4.2 .
4.3 .
4.4 .
4.5 .
4.6 .
4.7 .
4.8 .
4.9 .
4.10 .
4.11 .
4.12 .
4.13 .
4.14 .
4.15 .
4.16 .
4.17 .
4.18 .
4.19 .
4.20 .
4.21 .
4.22 .
4.23 .
4.24 .
4.25 .
4.26 .
4.27 .
4.28 .
4.29 .
4.30 .
4 - 3 1 .
4.32 .
4.33 .
4.34 .
4.35 .
4.36 .
i 4.37 .
4.38 .
4.39 .
4.40 .
vi
LIST OF FIGURES
Page
1
- 0
b
Model 5340A Frequency Counter. Rack Mount Kit. an fower Cord .......
9
J
Handshake Timing ................................ ..... #. ................. 2 - 6
5340A Rear Panel ........................................ .I .............. 2 - 11
5340A Digital Input/Output .............................................. 2 - 12
Pin Connections of the 10631A.
B. C Cables .............................. 2 - 12
5340A Remote Operation ................................................. 2 - 17
Example Program Card
.................................................. 2 - 20
FM Characteristics
....................................................... 3 - 2
DBM to Volts Conversion
................................................ 3 - 3
Front Panel Controls and Indicators ......................................
3 - 5
Rear Panel Controls and Connectors
......................................
3 - 7
5340A Operating Procedures .............................................. 3 - 8
Self Check and Operational Check Procedures ............................ 3 - 9
Logic Comparison Diagrams ............................................. 4-1
Gate Symbols ............................................................ 4 - 2
Logic Diagram for 1816.0003. 1816.0004. 1816.0184. and
1816
- 1085ROM’S ..................................... 4 - 3
Decade Counter 1820
- 0055 ................................................ 4 - 5
J - K Flip - Flop 1820 - 0065 ................................................. 4 - 5
Dual D
- Type Edge - Triggered Flip - Flop 1820 - 0077 ........................ 4 - 6
Four
- Bit Binary Counter 1820 - 0099 .......................................
4 - 7
Monostable Multivibrator 1820
- 0207 ...................................... 4 - 7
Four
- Line to Ten - Line Decoder 1820 - 0214 ................................ 4 - 8
Operational Amplifier 1820
- 0216 ......................................... 4 - 8
Monostable Multivibrator 1820
- 0261 ...................................... 4 - 9
Differential Video Amplifier 1820
- 0270 ................................... 4 - 9
Eight
- Bit Serial - In Parallel - Out Shift Register 1820 - 0294 ................. 4 - 10
BCD to Decimal Decoder 1820
- 0426 ....................................... 4 - 11
Voltage Comparator/Buffer 1820
- 0475 .................................... 4 - 11
Binary to Decimal Decoder 1820 - 0495 ..................................... 4 - 12
Dual Monostable Multivibrator 1820
- 0515 ................................ 4 - 12
Dual
NAND SchmittTriggers 1820 - 0537 .................................. 413
EECL High - speed D - Binary 1820 - 0557 ................................... 4 - 13
Dual Two - Input Logic Switch 1820 - 0560 .................................. 4 - 14
Dual D
- Type Edge Trigger FlipFlop 1820 - 0596 ........................... 4 - 15
Four
- Input Multiplexer 1820 - 0610 ........................................ 4 - 15
Eight
- Input Multiplexer 1820 - 0615 ....................................... 4 - 16
Quad 2
- Input Multiplexer 1820 - 0616 .......................................
Data Selectors/Multiplexers 1820 - 0640 .................................... 4 - 17
Eight
- Input Priority Encoder 1820 - 0657 .................................. 4 - 18
Low
- Power 4 - Bit Shift Register 1820 - 0659 ................................ 4 - 19
Low
- Power DCB Decade Counter 1820 - 0669 .............................. 4 - 21
Five
- Bit Comparator 1820 - 0706 .......................................... 4 - 22
Low
- Power Quad Two - Input Multiplexer 1820 - 0710 ....................... 4 - 22
SynchronousFour
- Bit Counter 1820 - 0716 ................................. 4 - 23
Presettable Decade Counter/Latch 1820
- 0751 ............................. 4 - 24
EECL Differential Amplifier/Limiter 1820
- 0754 ........................... 4 - 24
Hex D
- Type Flip - Flop 1820 - 0788 ......................................... 4 - 25
Quadruple D - Type Flip - Flop 1820 - 0839 ................................... 4 - 26
Four
- Bit Binary Full Adder 1820 - 0910 .................................... 4 - 27
EECL Bi
- Quinary Counter 1820 - 1019 ..................................... 4 - 27
Voltage Regulator 1826
- 0010 ............................................. 4 - 28
Voltage Regulator 1826 - 0016 ............................................. 4 - 29
OperationalAmplifier 1826
- 0021 ......................................... 4 - 29
4
- 17

Model 5340A
Figure
4.41 .
4.42 .
4.43 .
4.44 .
4.45 .
4.46 .
4.47 .
4.48 .
4.49 .
4.50 .
4.51 .
4.52 .
5.1 .
5.2 .
5.3 .
5.4 .
5.5 .
6.1 .
7.1 .
7.2 .
7.3 .
7.4 .
7.5 .
7.6 .
7.7 .
7.8 .
7.9 .
7.10 .
8.1 .
8.2 .
8.3 .
8.4 .
8.5 .
8.6 .
8.7 .
8.8 .
8.9 .
8.10 .
8.11 .
8.12 .
8.13 .
8.14 .
8.15 .
8.16 .
8.17 .
8.18 .
8.19 .
8.20 .
8.21 .
8.22 .
8.23 .
I
List of Figures
LIST OF FIGURES (Continued)
Page
F
Voltage Comparator/Buffer 1826 - 0026 I’ 4 - 30
.....................................
I~
Operational Amplifier 1826 - 0073 ................. ..! . / .................... 4 - 30
Dual Differential Amplifier 1858
- 0004 .................................... 4 - 31
Transistor Array 1858 - 0018. ...................... !i . ...I . ... : ............... 4 - 31
Simplified Block Diagram ................................................ 4 - 33
Sampling Diode Switch
................................................... 4 - 35
Balanced Sampler ......................................................... 4 - 35
I.
Sampler Slot ................................................................ 4 - 36
SamplingTiming
........................................................ 4 - 36
Frequency Response of A9 Input
. Amplifier ............................... 4 - 40
Transfer Loop Timing Diagram
.......................................... 4 - 41
Equivalent Regulator Circuit
............................................. 4 - 52
K05
- 5340A Feed - Forward Simulator. Schematic Diagram .................
Adjustment Procedures ................................................... 5 - 4
Simplified Flow Diagram of 5340A Program Control
......................
Troubleshooting Flow Diagram with HPLogic Clip’ .......................
Troubleshooting Charts 1 through 3 ...................................... .‘5-21
5340A Mechanical Parts .................................................. 6 - 32
5
- 3
5 - 15
5
- 16
A2 Component Locator
Series 1236A ...................................... 7 - 6
A17 Direct Count Amplifier Assembly (Series 1220A)
......................
7 - 7
A17A1 Direct Count Amplifier Assembly (Series 1220A) ...................
7 - 8
A20 Time Base Assembly .................................................
7 - 9
A20 Component Locator (Series 1236A) 7
- 10
A10 VCO
No . 2 Assembly (Series 1220A)Schematic Diagram
............. 7 - 11
A12 VCO No
. 1 Assembly (Series 1220A)Schematic Diagram
............. 7 - 12
A10. A12 VCO No . 1 and No . 2 Component Locator ....................... 7 - 13
A33 Power Supply (Series 1236A). Schematic Diagram
.................... 7 - 14
A33 Power Supply (Series 1236A).Component Locator .................... 7 - 15
Schematic Diagram Notes
................................................ 8 - 3
5340A Top Internal View (with Options 001. 002. and 011 Installed) .......
Options 001.002. and 011 Installed) .............................. 8 - 5
5340A Front Panel Reference Designations ............................... 8 - 7
011 Installed)
.................................................... 8 - 7
...................................
8 - 4
5340A Bottom Internal View and Cable Numbers and Connections (with
5340A Rear Panel Reference Designations (with Options 002 and
5340ABlock Diagram .................................................... 8 - 9
8
- 11
8
- 13
8 - 15
8
- 17
A1 Preamplifier Assembly No . 1 ..........................................
A2 Preamplifier Assembly No . 2 ..........................................
A3 HI - Z Input Amplifier Assembly .......................................
A4 Phase/Quad Detector Assembly .......................................
A5 Search Assembly ..................................................... 8 - 19
A6 Search Programmer Assembly
........................................ 8 - 21
A7 DC Amplifier/Compensator
No . 1 Assembly ...........................
A8 Bandpass Filters/@Detector Assembly ................................
A9 DC Amplifier/Compensator No . 2 Assembly ...........................
A10 VCO No . 2 Assembly ................................................ 8 - 29
All Mixer Assembly
..................................................... 8 - 31
A12 VCO
No . 1 Assembly ................................................ 8 - 33
A13 Limiter/Amplifier Assembly
......................................... 8 - 35
A14 Limiter/Amplifier/Mixer Assembly
.................................. 8 - 37
A15 10MHz Doubler Assembly
...........................................
A16 Casting Motherboard ................................................ 8 - 41
A17 Direct Count Amplifier Assembly .................................... 8 - 43
8
- 23
8
- 25
8
- 27
8
- 39
vii

Model 5340A
List of Figures
Figure
I 8 - 24.
8
- 25.
8
- 26.
8
- 27.
8
- 28.
8
- 29.
8
- 30.
1 8 - 31.
8
- 32.
8 - 33.
8 - 34.
8 - 35.
8 - 36.
...
vlll
LIST OF FIGURES (Continued)
Page
I
A18 Standard 10MHz Oscillator Assembly A18 10 M $Oscillator
Assembly (Option
001) . . . . .. ... . ... . .. . . .
A19 Interface A Assembly (Standard Instrument),
11
A27 Resolution Switch Assembly .... . .. . .. , . :: ?. . .'. ... ... .. . .... . 8 - 47
A19 Interface B Assembly
(Part of Option 011) .. .. ... ... .. . ... . . . .. . . .. . , . 8 - 49
A20 Time Base Assembly .
, ... .. . . .. .. .. .... . .. . . . .. ... . . .. .... .. ... . .. . .. 8 - 53
A21 Control Assembly . . .. .. . . ... . . ........ . .... . .. . . . .. .... . . . . . . . ... . .. . 8 - 55
A22 High Frequency Counter Assembly .
. . . .... . . . . . . . . . .. .. .. .. . .. . .. .. . 8 - 59
A23 Count Register Assembly .
... . . . .. .. . .... . . ... ... . . . . . . . . ... . ... .. .. . 8 - 61
A24 Display Register Assembly
. . ... . . . . . . .. . . . . ... .. . .. . .. .. ...... .. . . . .. 8 - 63
A25 Display Assembly, A26 Blanking Assembly . . . ... . . . . . .. . . . . .. .. . . . .. 8 - 65
A28 -15V and+175VRegulators Assembly, A29 +15VRegulator Assembly,
A30 Power Supply Motherboard
. . . ... . . ... . . . .. . .. . . . . ..... . .... . 8 - 69
A30 Power Supply Motherboard, A31
- 5V Regulator Assembly,
A32 +5VRegulator Assembly
. . . . .... . .. . . . ... .. . .. . .. . .. . . ... . ... 8 - 75
A33 Optional Oscillator Power Supply (Part
of Option 001) . .. . ... .. . . . .. .. 8 - 77
A34 Bus Communicator Assembly ...
. .. . . . . . . . . ..... . ... . .. .. . .. . .... . . . . 8y79
.. ... . . ........ ... 8 - 45
$I
'I. .I .

Model 5340A
WARNING
115 VOLTS AC AND 175 VOLTS DC ARE USED IN THIS INSTRUMENT.
SCRIBED HEREIN ARE PERFORMED WITH POWER SUPPLIED TO THE
INSTRUMENT WHILE PROTECTIVE COVERS ARE REMOVED. EXERCISE
EXTREME CARE WHEN PERFORMING THESE OPERATIONS. LINE
VOLTAGE IS ALWAYS PRESENT ON TERMINALS INCLUDING THE
POWER INPUT CONNECTOR, FUSE HOLDER, POWER SWITCH, ETC. IN
ADDITION, WHEN THE INSTRUMENT IS ON, ENERGY AVAILABLE AT
MANY POINTS MAY RESULT IN PERSONAL INJURY OR DEATH WHEN
CONTACTED
.
SOME OF THE MAINTENANCE AND SERVICING OPERATIONS DE -
WARNING
THIS INSTRUMENT IS SUPPLIED WITH A THREE - WIRE POWER CABLE.
THE CENTER THIRD WIRE IS INTENDED TO CONNECT THE INSTRU
-
MENT CHASSIS TO EARTH GROUND WHEN USED WITH A PROPERLY
WIRED THREE
- CONDUCTOR OUTLET. REFER TO SECTION I1 FOR
DETAILS
OF POWER CONNECTION. IMPROPERLY GROUNDED EQUIP -
MENT CONFIGURATIONS MAY RESULT IN HAZARDOUS POTENTIALS
BETWEEN THE CHASSIS
OF TWO OR MORE INSTRUMENTS OR EARTH
GROUND.
INPUT CIRCUITS AT THE
50 OHM INPUT CONNECTOR CAN BE DE -
PARAGRAPH 3 - 21 REGARDING ACCEPTABLE INPUT LEVELS.
STROYED WITH INPUT LEVELS EXCEEDING
1 WATT. PLEASE READ
, , ',
!
:i
,'i
I
ix

Model 5340A
General Information
Figure
1 - 1. Model 5340A Frequency Counter, Rack Mount Kit, and Power Cord
Model 5340A
I ‘1 Power Cord
’!
.i
Rack Mount Kit
1 - 0

SECTION I
GENERAL INFORMATION
1 - 1. DESCRIPTION
1 - 2. The Hewlett - Packard Model 5340A Frequency Counter measures frequencies from 10 Hz to
18 GHz. Sensitivity
is -30dBm (7.07 mV) from 10 Hz to 500 MHz, -35dBm (3.98 mV) from 500
MHz to 10 GHz and -25dBm (12.6 mV) from 10 GHz to 18 GHz. The counter makes direct
measurements from 10 Hz to 250 MHz and uses an automatic transfer oscillator technique for
frequencies above 250 MHz. Features include
a single input connector for the entire frequency
range, excellent AM and FM characteristics, eight
- digit display, auto - amplitude discrimination,
variable resolution from
1 Hz to 1 MHz, fast acquisition time, and wide dynamic range.
1
- 3. Electrical and mechanical specifications are listed in Table 1 - 3.
1 - 4. INSTRUMENT IDENTIFICATION
1 - 5. Hewlett - Packard instruments have a 2 - section, 10 - character serial number (OOOOAOOOOO),
located on the rear panel. The 4
- digit serial prefix identifies instrument changes. The 5 - digit
number is the serial number of each instrument. If the serial prefix of your instrument differs
from that listed on the title page of this manual, there are differences between this manual and
your instrument.
1
- 6. For lower serial prefixes it will be necessary to backdate this manual to conform with your
instrument. Refer to Section VII for
a listing of the changes needed.
’/ J
1 - 7. For higher serial prefix 5340A’s, changes were made after this manual was published and
it will be necessary to change this manual to conform with your instrument. A manual change
sheet
is included with this manual. If the change sheet is missing, contact your local Hewlett-
Packard office.
1 - 8. APPLICATIONS
1 - 9. Since one input connector accepts all signals from 10 Hz to 18GHz, the 5340A is particularly
adaptable to automatic systems and high speed production testing. The high sensitivity is
extremely useful in microwave measurements where signal levels are typically below the
sensitivity of most counters. When the 5340A is equipped with Option 011, all front panel
functions can be remotely programmed. In addition, the remote programming option allows for
digital outputing and programming of the octave ranges of the internal phase lock loops. Octave
range selection allows for measurements in a single frequency band to reduce the acquisition
time to typically less than 25 milliseconds. Other options include rear panel input connectors
Option 002, and high
- stability time base Option 001.
Model 5340A
General Information
I
1-10. OPTIONS
1 - 11. The 5340A can be ordered with the following options: Option
001, high - stability time base;
Option 002, rear panel input connectors; and Option 011 remote programming and digital output.
Table
1 - 3 lists the specifications for the options; Section VII describes field installation and gives
anoverall description of each’poption. Section I1 covers programming for Option 011.
1 ‘I
1 - 12. EQUIPMENT SUPPLIED AND ACCESSORIES AVAILABLE
‘..-I I
1 - 13. Table 1 - 1 lists equipment supplied and Table 1 - 2 lists accessories available.
1 - 1

Model 5340A
Genral Information
Description
Detachable Power Cord 7-% ft. (231 cm)long
Rack Mount
Kit (see Table 6 - 1 for a listing of parts)
Table
1 - 1. Equipment Supplied
HP Part Number
8120 - 1378
05326
- 60046
Description
I
Table 1 - 2. Accessories Available
HP Part Number
ASCII to Parallel BCD Converter
(Interfaces
5340A equipped with Option 011 to HP 5050A,
5050B, 5055A, or 562A Digital Recorders). Includes inter -
connect cable to 5340A.
Digital Recorder
(Usewith
K01-5340A above).
Interconnect Cable
(Connects
K01-5340A to 5050A/B, 5055A, or 562A
Digital Recorders).
Interface Kit
(For use with HP Computers and
5340A's equipped
with Option
011).
Interface Kit
(For use with
HP 982OA Calculators and 5340A's equipped
with Option
011).
ASCII Connecting Cables
(Eachcable end has stacked male and female type
57
connectors to allow multiple cable connections).
3 feet
6 feet I/
12 feet
t
I,
!
:I
Extender Board, 6340A for Testing A4 through A15
(except A5).
K01-5340A
505512
562A-16C
59310A
11144A Option 20
10631A
10631B
10631C
05340 - 60047
1 - 2

Model 5340A
General Information
Table
1 - 3. Specifications
SIGNAL INPUT
Input
1
Range: 10 Hz to 18GHz.
Symmetry: Sine wave or square wave input (40% duty factor, worst case).
Sensitivity: -30dBm, 10Hz to 500 MHz; -35dBm, 500 MHz to 10
Dynamic Range: 37dB, 10 Hz
to 500 MHz; 42dB, 500 MHz to 10GHz; 32dB,
Impedance: 50Q.
VSWR: <2:1, 10 Hz to 12.4 GHz; <3:1, 12.4 to 18 GHz.
Connector: Precision Type N
Coupling: DC
to load, AC to instrument.
Damage Level: +30dBm*7V dc (total power not
to exceed 1W)
Acquisition Time: <150ms mean typical.
GHz; -25dBm, 10to 18 GHz.
10GHz to 18 GHz.
Input 2
Range: 10Hz to 250 MHz direct count.
Sensitivity: 50 mV rms. 150 mV p
- p pulses to 0.1% duty factor minimum pulse
width 2 nsec.
Impedance: 1MQshunted by <25pF. Option
002 (rear panel input)
1MQshunted by <lo0 pF. 50Qtermination (provided for front panel input)
required to meet all specifications with Option
002 installed.
Connector: Type BNC female.
Coupling: AC.
Maximum Input:
10 Hz to 100 Hz 200V rms.
100 Hz to 100 kHz 20V rms.
100 kHz
to 250 MHz 2V rms.
Automatic Amplitude Discrimination: Automatically selects the strongest of all signals
present (within 250 MHz to 18 GHz phase - lock range), providing signal level
is: 6 dB above any signal within 200 MHz; 10dB above any signal within 500 MHz;
20 dB above any signal, 250 MHz-18 GHz.
Maximum AM Modulation: Any modulation index as long as the minimum voltage of the
signal
is not less than the sensitivity specification. For example, with a -10dBm
input signal at 10GHz, 94.5%modulation index will cause the signalto drop to -35dBm
(4 mV) at its lowest amplitude and would be the limit of modulation.
TIME BASE
Crystal Frequency:
10MHz.
Stability:
Aging Rate: <*3 x
Short Term: <5 x
Temperature: <*2 x 10+ over the range of 0°C to 50°C.
Line Variation: <*l x for 10%line variation from nomina
Output Frequency: 10MHz 32.4V square wave
(TTL compatible) available from
per month.
rms for
1 second averagingtime.
rear panel BNC.
ExternalTime Base: Requires 10MHz approximately 1.5V p - p sine wave or squarewave
into
1 KO via rear,panel BNC. Switch selects either internal or external time base.
Ii
I
I
1 - 3

Model 5340A
General Information
Table 1
- 3. Specifications (Continued)
OPTIONAL TIME BASE (Option 001)
Option 001 provides anoven controlled crystal oscillator time base with an aging rate
near that of a time standard. This option results in better accuracy and longer periods
between calibration. A separate power supply keeps the crystal oven
ON and up to
temperature when the instrument
is turned off as long as it remains connected to the
power line.
Frequency: 10MHz.
Aging Rate: <*5 x 10-’O/day after 24 hour warm - up’ and <1.5x 10-7/year.
Short Term Stability:
1 x 10+0 for 1 s avg. time
1 x
2 x for 10
s avg. time.
for 100
s avg. time.
Line Variation: <1 x
Temperature: <7 x over 0°C to 50°C range.
Warmup: Within 5 x 10-9 of final2 value 20 minutes after turn - on, at 25°C.
Frequency Adjustment Range: >1 x
Frequency Adjustment: 1 x (0.01Hz) 18 - turn control.
for *lo%change from nominal. A 10%change will cause a
frequency change of
<1 x 104for <2 min.
(>*lo Hz from 10 MHz) with 18 - turn control.
GENERAL
Accuracy:
*l count f time base error.
Resolution: Front panel switch selects 1 MHz, 100 kHz, 10 kHz, 1 kHz, 100 Hz, 10Hz,
Display: Eight in - line long life display tubes with positioned decimal point and
or
1 Hz.
appropriate measurement units of kHz, MHz, or GHz.
“DIR” lamp indicates measurement is direct.
“LOCK” lamp indicates phase
- lock has been achieved and measurement
GATE” lamp indicates measurement
is in progress.
“RMT” lamp indicates instrument
is controlled via external or remote device.
technique
is indirect.
“OVFL” indicates most significant digits will not be displayed. Digits displayed
when
“OVFL” is lighted are accurate *1 count * time base accuracy.
“OVFL”
is necessary for some high frequency measurements where resolution
of 100 Hz,
10 Hz, or 1 Hz is required.
“*” lamp indicates Option 001 crystal oven time base is in the process of warming
up (10 - 15min. approximately). (The lamp will remain on for longer periods of time
if the line voltage is low.)
Self-check: Counts and displays 10 MHz for resolution chosen.
Sample Rate: Controls time between measurements. Continuously adjustable from
50 milliseconds typical
to 5 seconds. Hold position holds display
indefinitely. Reset button resets display to zero and activiates
a new measurement
OperatingTemperature: 0” to 50°C.
Power: 115V or 230V *lo%, 50 - 60 Hz, 100 VA.
Weight: Net: 25 lb. (11, 3kg). Shipping: 31 lb. (14, lkg).
,I
’For oscillator off - time less than 24 hours.
2Finalvalue is defined asifrequency 24 hours after turn - on.
i
I
1 - 4

Model 5340A
General Information
Table
1 - 3. Specifications (Continued)
GENERAL (CONTINUED)
Dimensions:
NOTE
$ IB) TO ElA RACK HEIGHT
@REAR APRON RECESS
Accessories Furnished: Power cord 7%ft (200 cm), NEMA plug (HP Part Number 8120 - 1378)
Accessories Available: 59310A Interface Kit for use with 5340A Option 011 and Hewlett-
Packard computers.
11144A,Option 20 Interface Kit for use with 5340A Option 011 and Model 9820A
Calculator.
ASCII (Option 011)to parallel BCD converter K01-5340A.
Rear Panel Connectors (Option 002)
This option provides input connectors on the rear panel. Input specifications remain the
same. Input
1 (Type N) is on the rear panel in place of installation on the front panel.
Input
2 (BNC)is available on the front and rear panels. Input impedance is reduced
to 5012.
Remote Programmingand Digital Output (Option 011)
Option 011 adds the capability of digital outputting and remote programming via a
24-pin, series 57 microribbon connector on the rear panel marked DIGITAL INPUT/
OUTPUT. The
TTL and DTL compatible, bi - directional bus consists of eight data lines
plus seven status and control lines. Both program and output information are seven
- bit
ASCII (USA Standard Code for Information Interchange) characters. They are passed
over the data lines on
a character - serial basis.
Connector: 24 - pin female Amphenol #57-20240-2, HP#1251-3283.
Mating connector male, Amphenol #57-10240, HP #1251-0389.
1 - 5

2 - 1. INTRODUCTION
2 - 2. This section tells how to set up the 5340A Frequency Counter. Instructions for unpacking,
inspecting, installing, and remote programming are included.
2 - 3. UNPACKING AND INSPECTION
2 - 4. If the shipping carton is damaged, inspect the counter for visible damage (scratches, dents,
etc.). If the counter
is damaged, notify the carrier and the nearest Hewlett - Packard Sales and
Service Office immediately (offices are listed
at the back of this manual). Keep the shipping
carton and packing material for the carrier’s inspection. The Hewlett
- Packard Sales and Service
Office will arrange for repair or replacement of your instrument without waiting for the claim
against the.camer to be settled.
2 - 5. INSTALLATION REQUIREMENTS
BEFORE CONNECTING THE INSTRUMENT TO AC
POWER LINES, BE SURE THAT THE LINE SELECTOR
IS PROPERLY POSITIONED.
.*< 3
. -
2 - 6. LINE VOLTAGE REQUIREMENTS. The 5340A
is equipped with a line voltage switch to
select 115
- volt or 230 - volt ac operation. Before applying power, the rear panel screwdriver-
operated switch must be set to the correct position (“115” or “230” visible) and the correct fuse
(as labeled on the rear panel) must be installed. See Figure 3 - 4 for rear panel features.
2
- 7.
between 48
Hz and 66 Hz.
LINE FREQUENCY REQUIREMENTS. The counter will operate at line frequencies
2 - 8. THREE CONDUCTOR POWER CABLE. To protect the operator, the counter uses a
grounded three
- conductor detachable power cable. The male connector end is a NEMA type
connector, and the female connector end
is a C.E.E. type connector that mates with the 5340A
rear panel power connector. Connect the power cable to
a power source receptacle with a
NEMA grounded third conductor. If the line power receptacle
is a standard two - pin type instead
of the NEMA three
- pin receptacle, use a two - to - three pin adaptor (HP Part No. 8120 - 1348) and
connect the green pigtail on the adaptor to ground.
2 - 9. TEMPERATURE LIMITS. Maximum and minimum allowable operating temperatures ake
listed in Table 1 - 3. If these limits are exceeded at the installation site, auxiliary cooling or
heating should be used to keep the environment within limits.
Model 5340A
Installation and Remote Programming
SECTION II
INSTALLATION AND REMOTE PROGRAMMING
I
2 - 10. RACK INSTALLATION. The counter is ready for bench operation
as shipped from the
factory. Additional parts necessary for rack mounting are packaged with the instrument.
To
convert the instrument to ‘rack installation, refer to Figure 6 - 1 for parts identification and pro -
ceed as follows:
,’ i
a. Remove tilt stand MP14 by removing the two outside front feet MPll from the bottom
cover MP9.
1 The feet are removed by pressing the foot - release button and sliding
the foot toward the center
of the instrument.
b.
Remove the remaining three feet from the bottom cover. 2
- 1

Model 5340A
Installation and Remote Programming
c. Remove the two adhesive
- backed trim strips MP1from side frames MP3 and MP12.
d. Using the three screws provided, attach the filler strip from the rack mount kit along the
front of bottom cover MP9.
e. Attach the flanges from the rack mount kit to the front end of side frames MP3 andMP12.
Orient the larger corner notch toward the bottom of the instrument.
2 - 11. REPACKING FOR SHIPMENT
2 - 12. If it becomes necessary to reship a counter, good commercial packing should be used.
Contract packaging companies in many cities can provide dependable custom packaging on
short notice. Instruments should be packed securely in
a strong corrugated container (350 lb/sq.
in bursting test) with suitable filler pads between the instrument and container. Before returning
instruments to Hewlett
- Packard, contact the nearest Hewlett - Packard Sales and Service
Office for instructions.
2 - 13. ENVIRONMENT DURING STORAGE AND SHIPMENT
2 - 14. Conditions during storage and shipment should normally be limited as follows:
a. Maximum altitude: 25,000 feet.
b. Minimum temperature: -40°F (-40OC).
c. Maximum temperature: +167’F (+75OC).
2 - 15. REMOTE PROGRAMMING AND DIGITAL OUTPUT
2 - 16. Option 011 adds remote programming and digital output capability to the 5340A Frequency
Counter. These are accomplished with
a bi - directional bus, via a 24 - pin connector on the rear
panel marked DIGITAL INPUT/OUTPUT. Associated with
this connector are six slide switches
used to address the instrument. A 5340A can be addressed to either send output data (TALK) or
to accept program information (LISTEN). For the purposes of the Option 011 description, several
terms are defined
as follows:
a. A TALKER is the sender of information on the bus.
b. A LISTENER
is the receiver or acceptor of information on the bus.
c. A CONTROLLER
is an instrument that has the responsibility of managing the instru -
ments connected to the bus. It is capable of addressing other instruments on the bus as
TALKERS or as LISTENERS. It is a TALKER and may be a LISTENER.
“High” or
‘‘0” level of a line or switch is the relatively more positive signal level (22.4V).
“Low” or “1” level of a line or switch is the relatively less positive signal level (~0.4V).
d.
e.
2 - 17. What Can Be Programmed
2 - 18. Also, the 5340A’s
octave range and its output mode can be selected. In addition, a controller can command the
5340A to make a measurement by sending either a SAMPLE TRIGGER or RESET instruction.
The controller can elect
40 give control to the front panel controls (LOCAL) or have the 5340A
operate according to ’the information stored in its remote program storage cells (REMOTE).
These are listed in Table
2-,kl along with their associated codes.
2
- 19. When addressed 40 Ohput, the 5340A sends a string of 16 ASCII characters (USA Standard
Code for Information fnterchange). It includes the measurement technique (direct or by using
phase locked loops), overflow, eight data digits (blank display digits are outputed as
0’s) E
All front panel switch functions, except power, are programmable.
i
2 - 2

Model 5340A
Installation and Remote Programming
followed by the appropriate multiplier to make the reading
Hz, and a word terminator. Table 2 - 5
lists the order outputed and a description of the 16output characters.
2 - 20. Bus Description
2 - 21. The 15 - linebus consists of 8 data lines plus 7 control and status lines. Addresses, program
andoutput information are communicated on the data lines. These arebased on
a character - serial,
seven
- bitASCII code set.
2
- 22. Three control lines are used to execute the transfer of each byte of information on the data
lines. They employ an interlocked “handshake” technique to
pass information. This allows for
asynchronous data transfer without timing restrictions being placed on either the 5340A
or its
controller. One line
is driven by the 5340A to inform the controller of its status. The controller
uses the three remaining lines to manage the 5340As on the bus.
2
- 23. Several 5340A’s can be connected to a common bus. The exact number depends on the
drive capability of the controller (see LINE CHARACTERISTICS). A specific 5340A
is made to
send output data (TALK)
or accept program data (LISTEN)by addressing it to do so.
2 - 24. All bus lines have been given names and mnemonic acronyms that convey the message
being carried on that line. Each line
is described below, followed by Table 2 - 1 which lists the
relationship of the Attention line and the three handshake lines. Figure 2
- 1 shows the signal
levels andtiming relationship of the handshake and data lines.
ALLINSTRUMENTS CONNECT -
ED TO THE BUS, INCLUDING THE CONTROLLER, MUST OBEY THESE DESCRIPTIONS.
a. SERVICE REQUEST (SRQ)
By setting SRQ low,
a 5340A indicates to the controller that it has completed a measure -
ment and is ready to output. It drives SRQ only if programmed to “WAIT” in the output
phase of its operating cycle until addressed to output. When programmed in the other
output mode “output ONLY IF addressed”, the 5340A sets SRQ high
at all times. When
SRQ
is high, service is not being requested.
If two or more 5340A’s are connected to the bus and one of them sets SRQ low, the
controller must go through
a process of elimination to determine which one requested
service. It does this by addressing each one to TALK in an orderly manner. Only the
5340A with output information will respond.
b. REMOTE ENABLE (REN)
REN can be used by
a controller to select remote or local (front panel) control of the
operating of
a 5340A. It works in conjunction with the information stored in the local-
remote program storage cell (see Table 2 - 4). When REN is low and the 5340A has
been sent an ASCII
“0”, it will operate according to the information previously stored
in its remote
- local program storage cells. It operates according to its front panel con -
trols for all other combinations of these, i.e., REN is low and the remote - local storage
cell contains an ASCII
“N” or when REN is high regardless of what is stored in the1
remote - local cell. ASCII “N” is stored in the local - remote program storage cell when
either the power is turned on or the RESET pushbutton
is depressed.
c. INTERFACE CLEAR (IFC)
,I
A controller uses IFC to clear the bus. When it sets IFC low for >lo0 psec, all 5340A’s
immediately stop driving the data lines (DIO1 through DI07) and handshake lines
(RFD, DAC, and OAV). IFC will not clear
a 5340A’s service request (SRQ). A con -
troller may dride IFC low at any time. When IFC is high, it has no effect on the bus
operation. The 5340A monitors IFC
at all times.
2 - 3