HP 3320A Service manual

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OPERATING AND SERVICE MANUAL
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FREQUENCY
SYNTHESIZER
3320A/B
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CERTIFICATION
The Hewlett-Packard Company certifies that this instrument was
thoroughly tested and inspected and found
to meet its published
specifications when it was shipped from the factory. The Hewlett-
Packard Company further certifies that its calibration measure-
ments are traceable
to the U.s. National Bureau of Standards to
the extent allowed by the Bureau's calibration facility.
WARRANTY AND ASSISTANCE
All Hewlett-Packard products are warranted against defects in
materials and workmanship. This warranty applies for one year
from the date of delivery, or,
in the case of certain major compo-
nents listed in the operating manual, for the specified period. We
will repair or replace products which prove to be defective during
the warranty period provided they are returned to Hewlett-
Packard. No other warranty is expressed or implied. We are not
liable for consequential damages.
Service contracts or customer assistance agreements are available
for Hewlett-Packard products
that require maintenance and re-
pair on-site.
For any assistance, contact your nearest Hewlett-Packard Sales and
Service Office. Addresses are provided
at the back of this manual.

W.J. FORD SURPLUS ENTERPRISES
A DIVISION OF 3125661 CANADA INC.
21 MARKET ST. N. (corner Market 8r William)
P.O. Box 606. SMITHS FALLS, ONT. K7A 4T6
TELEPHONE (613) ~195 FAX [phone]
OPERATING AND SERVICE MANUAL
Manual Part No. 03320-90001
Microfiche Part No. 03320-90051
MODEL 3320A/B
FREQUENCY SYNTHESIZER
The main body of this instruction manual applies to
Serial Number 1I 38A-00276 (Model 3320A)
1319A-00691 (Model 3320B)
and higher. Any changes made in instruments having
serial
numbers higher than the above number will be
found in a"Manual Changes" supplement supplied
with this manual. Be sure to examine this supplement
for any changes which apply to your instrument and
record these changes in the manual. Backdating
information for
instruments with lower serial num-
bers will be
found in Section VIII.
Copyright Hewlett-Packard
Company 1971
P.O. Box
301, Loveland, Colorado, 80537 U.S.A.
Printed: August
1973

Model 3320A/B
TABLE OF CONTENTS
Table of Contents
Section
I. GE
I-I.
1-3.
1-6.
1-9.
1-12.
1-14.
1-16.
Page
ERAL IFORMATION I-I
Introduction .. _ _ 1-1
Specifications _..... . I-I
Description..... .I-I
Options _
1-3
Accessories Supplied 1-3
Accessories Available 1-3
Instrument and Manual Identification 1-3
Section
4-15.
4-17.
4-19.
4-41.
4-49.
4-56.
4-62.
4-63.
4-70.
Page
Reference Section _4-2
Functional Block Description __4-2
Controller Section 4-2
Frequency Section
...........•..... 4-7
Amplitude Section
...........•..... 4-7
Reference Section _4-9
Unique Circuits ...............•.... 4-10
3320B Thermopile Circuitry
....•.... 4-10
The'" NCounter ............•.... 4-11
Section Page
II. INSTALLATION .............• _ •......... 2-1
2-1. Introduction ...........•.•......... 2-1
2-3. Initial Inspection. . . . . . . •......... 2-1
2-5. Power Requirements 2-1
2-7. Grounding Requirements 2-1
2-10. Environmental Requirements 2-2
2-12. Repackaging for Shipment 2-2
2-16. Power Cords and Receptacles 2-2
2-18. Interfacing......... .2-2
2-19. Remote
BCD Options. . . . . 2-2
2-22. Remote GPIB Option. . . . 2-2
Section Page
Ill. Operating Instructions 3-1
3-1. Introduction... . 3-1
3-3. Controls, Indicators and Connectors 3-1
3-5. Front Panel Operation 3-1
3-7. Frequency 3-1
3-9. Amplitude ..................•.... 3-1
3-12. Leveling ..................•...... 3-1
3-14. Remote BCD Programming .....•...... 3-1
3-16. Remote Enable 3-1
3-18. 3320B Amplitude ...........•...... 3-2
3-20. Frequency
..........•............ 3-3
3-22. Vernier 3-3
3-24. Range _
......•..... 3-3
3-26.
Leveling...... . . . 3-3
3-28. Delay and Response
........•.•..... 3-3
3-34. Remote GPIB Programming
......•..... 3-4
3-48. Handshake
...............•....... 3-6
3-52. Delay Flag 3-7
3-56. End Output
............•.•....... 3-9
3-58. Reference Crystal
Oven .......•.•..... 3-9
Section Page
IV. THEORY OF OPERATION 4-1
4-1. Introduction . 4-1
4-3. General Description ...........•.•.... 4-1
4-6. Simplified Block Diagram .....•..•.... 4-1
4-7. introduction 4-1
4·9. Controller Section ..........•.•.... 4-1
4-11. Frequency Section .....•......•.... 4-2
4-13. Amplitude Section 4-2
Section
Page
V. MAINTENANCE. . . ..........•...... 5-1
5-1. Introduction ......•......•...... 5-1
5-3. Test Equipment 5-1
5-5. Performance Tests. . . . . 5-1
5-7. Frequency Accuracy, Vernier Out 5-1
5-9. Frequency Accuracy, Vernier In 5-1
5-11. Harmonic Distortion 5-3
5-13. Spurious............ .. 5-4
5-15. Signal to Phase Noise 5-4
5-17. Amplitude Accuracy, Absolute
5-6
5-19. 3320A Frequency Response, 0.0I Hz-
13 MHz. 3320B Frequency Response,
0.01
Hz -10 Hz 5-6
5-21. 3320B Frequency Response,
10
Hz - 13 MHz 5-7
5-23. 3320B Attenuator Accuracy,
10kHz 5-7
5-25. 3320B Attenuator Frequency Response
.. 5-8
5-27. Adjustment Procedures
5-11
5-29. Power Supply. . . . . . . 5-11
5-31. Reference Oscillator .....•....•.... 5-11
5-33. VTO Linearity 5-11
5-35. Vernier 5-11
5-37. Amplitude Reference, 3320B 5-12
5-39. Carrier Balance 5-12
5-41. Amplitude 5-12
5-43. Harmonics,3320B
...........•.... 5-13
5-45. Leveling,3320B 5-13
5-47. Transient Response, 3320B 5-14
5-49. General Maintenance Information 5-14
5-51. Front Panel Removal 5-14
5-53. Front Panel Disassembly 5-15
5-55. Front Panel Assembly 5-16
5-57. Impedance Cam Settings 5-16
Section
Page
VI. REPLACEABLE PARTS ......•...•........ 6-1
6-1. Introduction ............•.......... 6-1
6-4. Ordering Information .....•.......... 6-1
6-6. Non-Listed Parts .......•............ 6-1
iiI

Table of Contents
Section
Page
VII. CIRCUIT DIAGRAMS AND
TROUBLESHOOTING
.......•.•......... 7-1
7-1. Introduction 7-1
7-3. Troubleshooting .•...•......... 7-1
7~. Schematic Diagrams ..........•....... 7-1
Section Page
VIII. BACKDATING............. . 8-1
8-1. Introduction .8-1
8-3. Instrument Serial Number Sequence
..... 8-1
8-5. Change I, for Serial umbers 1121 A-
00 II 0and Below (3320A),
I I22A-00120 and Below (3320B)
.. 8-1
8-7. Change 2, 3320B 8-2
8-9. Change 3, 3320B 8-2
8-11. Change
4, for Serial Numbers 1138A-
00135 and Below (3320A),
I I39A-00200 and Below (3320B)
.... 8-2
Model 3320A/B
Section Page
8-13. Change 5, for Serial Numbers
II38A-
00135 and Below (3320A),
I I39A-00250 and Below (3320B)
... 8-2
8-15. Change
6, for Serial Numbers 1139A-
00340 and Below (3320B) 8-2
8-17. Change
7, for Serial Numbers 1l38A-
00185 and Below (3320A).
1139A-00540 and Below (3320B)
.... 8-2
8-19. Change 8, for Serial Numbers 1139A-
00590 and Below (3320B) 8-2
8-21. Change 9, for Serial Numbers 1138A-
00275 and Below (3320A),
1319A-00690 and Below (3320B)
.... 8-3
APPENDICES
A. CODE LIST OF MANUFACTURERS
B. SALES AND SERVICE OFFICES
LIST OF TABLES
Table Page
I-I. Specifications .I-I
1-2. General Information 1-2/1-3
1-3. Accessories Supplied. ......•..... . 1-3
1-4. Accessories Available ....•.......... 1-3
2-1. GPIB Bus Cables 2-3
3-1. Frequency Control Sertings . . . . 3-1
3-2. Amplitude and Frequency Sertling Times 3-4
3-3. Addressing Codes 3-4
3-4. GPIB
Bus Signal Mnemonics 3-5
3-5. ASCII Programming Codes 3-5
3-6. GPIB Programming .............•.•....... 3-6
3-7. Sertling Times 3-7
4-1. 3320A!B Ranges 4-2
4-2. GPIB Bus Signal Mnemonics
..........•..... 4-4
4-3. Frequency Serting
vs. ~ NNumber 4-12
4-4. Preset Number 4-14
5-1. Test Equipment Required
5-2
5-2. 3320A Frequency Response (0.01 Hz - 13 MHz) . 5-6
5-3. 3320B Frequency Response (0.01 Hz -lO Hz) .. 5-7
5-4. 3320B Frequency Response (10 Hz - 13 MHz) .. 5-7
5-5. Output Artenuator 5-9
5-6. 3320B Frequency Response 5-9
5-7. Readout Disks Positions
.......•.•........ 5-16
8-1. Serial Number Index
.............•.•...... 8-1
iv

Model 3320AjB
LIST OF ILLUSTRATIONS
Table of Contents
7-2.
7-1.
6-1.
6-2.
6-3.
Figure
Page
2-1. Power Module ...........•.•........... 2-1
2-2. Power Receptacles ............•........... 2-2
2-3. BCD Remote Connector .....•........•.... 2-2
2-4. GPiB Remote Connector ............•...... 2-3
2-5. Typical GP[B Bus System 2-3
3-1. Controls, Indicators, and Connectors 3-0
3-2. BCD Input Connector 3-2
3-3. BCD Timing Sequence ..............•...... 3-4
3-4. GPiB Input Connector ........•.•.......... 3-5
3-5. Programming Example ........•............ 3-7
3-6. Handshake Timing Diagram 3-8
3-7. Option 002 Circuit Diagram ..........•..... 3-9
4-1. Simplified 3320A!B Block Diagram
.....•..... 4-1
4-2. Frequency Generation 4-2
4-3. Reference Sources
..................•..... 4-3
4-4. 3320A Standard Controller ...........•..... 4-3
4-5. 3320B Standard Controller .........•.•..... 4-3
4-6. 3320A BCD Controller ............•....... 4-3
4-7. 3320B BCD Controller ............•....... 4-3
4-8. Typical GPIB Bus System 4-4
4-9.
GPIB Cantroller 4-5
4-10. VTO and Phase Lock Loop 4-6
4-11. Range Dividers 4-7
4-12. 3320A Amplitude Section. . . 4-8
4-13. 3320B Amplitude Section .............•.... 4-8
4-14. Simplified Amplitude Reference ......•...... 4-9
4-15. Reference Section 4-9
4-16. Vernier Oscillator 4-10
4-17.
AC/OC Converter in the Amplitude Section 4-11
4-18. AC/OC Converter with Overload Circuits 4-[ 1
4-19.
.,. NControl Logic Diagram 4-13
5-1. Harmonic Distortion 5-3
5-2. 3320 Output Section ..............•.•..... 5-4
5-3. Spurious 5-5
5-4. Signal to Phase Noise 5-5
5-5. 3320B Frequency Response (i 0 Hz - 13 MHz) .. 5-7
5-6. 3320B Attenuator Accuracy 5-8
5-7. 50 Ohm to 75 Ohm Adapter 5-10
5-8. Chassis Mounted Components .........•.... 5-13
5-9. Front Panel and Vernier Control
Mechanical Parts .................•.... 5-17
External Mechanical Parts 6-33
Internal Mechanical Parts 6-34
Front Panel and Vernier Control
Mechanical Parts 6-35
System Component Isolation and
GPiB Troubleshooting Tree 7-3/7-4
Reference Frequency Troubleshooting Tree .7-5/7-6
Figure
Page
7-3. Frequency Generating Section
Troubleshooting Tree 7-7/7-8
7-4. Amplitude Section Troubleshooting Tree .. 7-9/7-10
7-5. Controller Functional Block Diagram 7-11/7-12
7-6. Controller Configurations 7-13/7-14
7-7. Analog Functional Block Diagram 7-15/7-16
7-8. Common Assemblies, Top and
Bottom View 7,17/7-18
7-9. Panel Interface A20. 3320A Standard,
Options 001, 002, 006
.. 7-19/7-20
7-10. Panel Interface A21. 3320B Standard,
Options 001, 002, 006 7-21/7-22
7-11.
BCD Frequency Control. p/o A23, 3320A
Option 003, 3320B Option 004 7-23/7-24
7-12. BCD Frequency Control. p/o A23, 3320A
Option 003, 3320B Option 004 7-25/7-26
7-13.
BCD Amplitude Control A24B. 3320B
Option 004 7-27
7-14. GPIB Input A37 and
GPIB Controller A38,
3320B Option 007 7-29/7-30
7-15.
GPIB Latches A25, 3320B Option 007 7-31/7-32
7-16.
GPIB Frequency Control. p/o A23,
3320B Option 007 7-33/7-34
7-17.
GPIB Frequency Control. p/o An,
3320B Option 007 7-35/7-36
7-18.
GPIB Amplitude Control A24B,
3320B Option 007 .7-37/7-38
7-19.
VTO A3 ............. . 7-39/7-40
7-20.
~ NCounter A2 7-41/7-42
7-21. Range Divider
A4 7-43/7-44
7-22.
Range Divider A5, 3320AjB Standard. Range
Divider A6, 3320AjB Option 006· 7-45/7-46
7-23. Mixer Preamp AIO. .7-47/7-48
7-24. Power Amplifier AI2A, 3320A .... .
.. 7-49/7-50
7-25. Power Amplifier A14, Attenuator A15;
3320B .7-51/7-52
7-26. Modulator A9A, 3320A 7-53/7-54
7-27. Modulator
A9B, 3320B ......... .. . .. 7-55/7-56
7-28. Detector AI2B, 3320B
..7-57/7-58
7-29. Amplitude Reference All, 3320B 7-59/7-60
7-30. 20
MHz Reference Oscillator A8,
Reference Phase Lock. p/o A7 .7-61/7-62
7-31. Vernier Reference Oscillator AI,
Reference Ph"e Lock. p/o A7 7-f,3/7-64
7-32. Power Supplies; AI6A, AI7A3320A.
AI6B, AI7B 3320B 7-65/7-66
7-33. Wiring Diagram .. .7-67/7-68
v

Model 3320A/B
SEeTIO N I
GENERAL INFORMATION
Section I
I-I. INTRODUCTION.
1-2. This section contains general information about the
Model 3320A/B Frequency Synthesizer. Ageneral descrip-
tion plus information on specifications, accessories, and
instrument identification is given.
1-3. SPECIFICATIONS.
1-4. Table I-I is acomplete list of the Model 3320A/B
critical specifications
that are governed by tolerances. Table
1-2 contains general information that describes the opera-
ting characteristics
of the 3320A/B.
1~5. Any change in the specifications due to manufac-
turing, design, or traceability
to the U.S.National Bureau of
Standards will be covered by revised pages in this manual.
This manual supercedes all previous information concerning
specifications
of the 3320.
1·6. DESCRIPTION.
1-7. The Hewlett-Packard Model 3320A/B Frequency
Synthesizer provides accurate and stable frequencies from
0.001 Hz to 12.9999 MHz. Frequency selection is by three
controls that provide three digits
of resolution plus an
Table '·1. Specifications.
Frequency accuracy
Vernier Out: ± 0.001% of setting for 6 mo. OoC to 5SoC.
Vernier In: ±0.01% of range for 6 mo, OoC to 5SoC.
Frequency stability
Long term: ± 10 parts in 10
6
of setting per year (Vernier Out)
with ambient temperature reference. Optional high stability
crystal reference oven available (Option 002).
Signal to phase noise (integrated>. > 40 dB in 30 kHz band,
excluding ±1Hz, centered on carrjer.l0 MHz range, Vernier
Out. Improves on lower frequency ranges.
Spurious: >60 dB down.
Harmonic distortion: with output frequencies> 0.1% of range at
full output amplitude any harmonically related signal wilt be less
than the following specified levels.
-
BOdB with output from 5Hz to 100 kHz.
- 50dB with output from 100 kHz to 1 MHz.
- 40 dB with output from 1 MHz to 13 MHz.
3320A AMPLITUDE SECTION
Amplitude: maximum 2Vrms ±10% open circuit.
maximum 1 V rms ±10% into 50!1.
Frequency response: ±2 dB over total range.
33208 AMPLITUDE SECTION
Amplitude accural;Y (absolute): ± 0.05 dB at 10 kHz and
+26.99 dBm (20°C to 30°C I.
Attenuator accuracy (l0 kHz reference): ± 0.02 dB/l0 dB step.
Frequency response (10 kHz reference):
33208 ATTENUATOR SETTINGS IdBml
Standard
Option 001
+ 26.99 to + 24.99 to
3.00 5.00
3.01 to 5.01 to
- 23.00
- 25.00
-23.01 to
-25.01 to
- 53.00
- 55.00
-53.01 to -55.01 to
- 69.99*
- 69.99**
SPECIFICATION IdB)
LEVELING OFF LEVELING ON (> 10 Hz)
± 0.5 ± 0.05
± 0.5 ± 0.1
± 0.5 ± 0.2
± 0.5 ± 0.4
* - 73.00 dBm, remote control.
** - 75.00 dBm, remote control.
I-I

Section I
Table 1-2. General Information.
Model 3320AjB
Frequency range:
Frequency ranges: 0.01
Hz to 13 MHz in 7ranges.
10 MHz
1000 kHz
100 kHz
10 kHz
1000 Hz
100 HZ}
10 Hz Optional
30% overrange on all ranges.
Power requirements: 115 V or 230 V± 10%, 48 Hz to 63 Hz,
< 110 W, (400 Hz operation on special basisl.
Weight
3320A: 45 lb. (20,4 kg).
Shipping: 59 Ib (26,7 kg).
3320B: 471b. (21,3 kg).
Shipping: 61 lb. (27,5 kg).
Outline drawing:
Frequency resolution:
Range
Vernier Out Vernier In
Vernier In
(local or remotel
(local) (remote)
10 MHz 10 kHz 10 Hz
1 kHz
1000 kHz
1 kHz
1Hz
100 Hz
100 kHz 100 Hz 0.1 Hz 10 Hz
10 kHz 10 Hz 0.01 Hz
1 Hz
1000 Hz
1Hz 1
mHz 0.1 Hz
100 Hz
0.1 Hz
0.1 mHz
0.01 Hz
10 Hz 0.01 Hz 0.01 mHz
0.001 Hz
OPTIONS
Internal frequency standard: 20 MHz ambIent temperaturE; crystal.
Optional 5 MHz reference crystal oven available (Option 002).
Phase locking: the 3320A/B may be phase locked with a 200 mV to
2 V rms signal that is any subharmonic of 20 MHz from 1 MHz
through 10 MHz (e.g., 1 MHz, 2 MHz, 2.5 MHz, 5 MHz.
10 MHz). BNC female connector.
Rear panel output: front or rear panel output is available. Can be
easily changed
by routing internal cable to front or rear female
BNC connectors. No degradation of performance for rear panel
output.
Auxiliary outputs
Tracking output: 20 MHz to 33 MHz offset signal. Tracks main
output with 20 MHz offset. Rear panel female BNG,
> 100 mV rms/50 n.
MHz reference output: sine wave, rear panel female BNG.
> 220 mV rms/50 n (> 0 dBm/50 nl.
Low level output: same frequency as main output but remains
between 50 mV rms and 158 mV rms (into 50 n) depending
on main output level setting. May be used as counter output if
wanted. Rear panel female BNG. sine wave.
3320A AMPLITUDE SECTION
Amplitude range: 0 dBm to + 13 dBm range through 3/4 turn front
panel control (not programmablel.
Output impedance: 50 n.
33208 AMPLITUDE SECTiON
Amplitude range: + 26.99 dBm (1/2 watt) to - 69.99 dBm
C· 73.00 dBm under remote contrail into 50 n, (+ 26.99 dBm =
5 V rms into SOn).
Amplitude resolution: 0.01 dB.
Output impedance: 50 n.
GENERAL 3320A/B
Operating temperature: OoC to 55
0C.
Storage temperature: - 40
0C
to +JOoC.
J·2
75 Ohm Output Impedance
Option 001 3320A!B
Attenuation and output referenced to 75 rl.
Amplitude range (3320B only): + 24.99 dBm to - 69.99 dBm
(-75.00 dBm under remote control) into 75 n. (3320A
only): - 2 dBm to + 11 dBm into 75 n.
Reference Crystal Oven*
Option 002 3320A/B
5 MHz crystal in temperature stabilized oven.
long term stability: ±1 part in lOS/day.
±1 part in 10
7
/mo.
Frequency accuracy: ±1 part in 10
7
of setting per month.
For field installation order accessory kit HP 11237A.
Parallel BCD Remote Control*
Option 003 3320A Only
Allows digital remote control of frequency only on 3320A. Digital
control of output level is not available on 3320A. The most
significant digit of the Vernier may be programmed thus giving four
digits, plus 30% overrange, control of frequency in seven ranges
(two are optionall.
Control lines required: 24 plus remote line.
logic levels: TTL, "1" state low, non-isolated.
Frequency switching and settling time: ± 0.01% range, 15 ms,
±0.001 %range, 60 ms.
For field installation order accessory kit HP 11238A.
Parallel BCD Remote Control *
Option 004 3320B Only
Allows full digital remote control of frequency and amplitude.
G) Four digits of frequency, overrange, frequency range, Vernier
In/Out. four digits of amplitude, and leveling loop response times
are all controlled digitally. All front panel controls, except line
switCh, are disabled in remote.
Control lines required: 40 plus remote line.
logic levels: TTL, "1" state low, non-isolated.
Frequency switching and settling time: ± 0.01% range, 15 ms;
± 0.001 %range, 60 ms.
Amplitude switching and settling time: < 1.5 s to rated accuracy.
For field installation order accessory kit HP 112388.

Model 3320A/B
GPIB Remote Control*
Option 007 33208 Only
Section I
Table 1·2. General Information (cant'd).
Logic Level Requirements for All Digital Remote Control Options.
100 Hz and 10 Hz Ranges·
Option 006 3320A/B
"High" (logical "0") + 2.4 V to +5 V or removal of
contact closure to ground.
oV to 0.4 V (5 rnA max.) or
"Low" (logical "1") contact closure to ground
through < 80 ohms.
Allows bit~rallel word-serial digital remote control of all
functions. (..!) A 33208 with this option will recognize an address
and then accept instructions in aserial fashion. Instructions are in a
7-bit parallel ASCII code. Due to the addressing feature. up to ten
3320B's (with this option) may be programmed from one program-
mer. The HP 3260A Marked Card Programmer may be used as a
programmer for this option.
This option requires 8digital input lines for full control.(!) seven
of the eight are programming input lines and one is a data command
line.
State
Requirements
Full digital isolation is standard with this option.
Timing: max of 5J,l5 per word required to input program data.
Logic level requirements: (same as parallel BCD remote). Switching
and settling times for frequency and amplitude are the same as with
the parallel BCD remote option. For field installation, order
accessory kit HP 11239B.
overrange digit, and avernier control that provides two
digits
of resolution. Arange control provides five ranges of
1000 Hz, 10 kHz, 100kHz, 1000 kHz, and 10 MHz. The
output frequencies are derived from aprecision single
frequency source by an indirect synthesis technique.
1-8. In the 3320A, the
output amplitude is selected by a
0-13 dBm continuous potentiometer. Maximum output
voltage is IVrms into 50 fl. The 3320B has arange of
+26.99 dBm to -{)9.99 dBm with aresolution of 0.01 dB.
The output amplitude can be selected in steps
of 0.0IdB,
0.1 dB, 1.0 dB, or 10 dB. Maximwn
output voltage of the
3320B
is 5Vrms into 50 fl.
1-9. OPTIONS.
Adds two lower frequency ranges, 100.0 Hz and 10.00 Hz, yielding
greater resolution for low frequency outputs (see resolution section
of specifications). These two ranges are fully programmable if digital
remote options are installed.
F.or field installation order accessory kit HP 11240A.
·Field installable.
Q) Except last vernier digit and line switch.
1-12. ACCESSORIES SUPPLIED.
1-13. Accessories supplied with the 3320A/B are listed in
Table 1-3. Table
1~3 Accessories SupDlied.
~p·Model
<ltv
Description
or Part No.
03320-84401 1Rack
Mounting Kit
11235A
1GPI B
Adapter
1·14. ACCESSORIES AVAILABLE.
1·15. Accessories available for the 3320A/B are listed in
Table 1-4.
Table 14. Accessories Available.
1-10. The 3320A/B series of instruments include atotal of
nine options. These options are as follows:
001 001 75
fl Output Impedance
002 002 Reference Crystal Oven
003 004 Parallel
BCD Remote Control
006 006 100 Hz and 10
Hz Ranges
007 GPI B
Remote Control
1·11. The 3320B Option 007, GPIB (General Purpose
Interface Bus) Remote Control utilizes aseven line data
bus, athree linetransfer bus,and four additional control bus
lines
to manage the flow of information over the data bus
and the transfer bus. Data information is transferred in an
ASCII (American Standard Code for Information Inter-
change) code. For more information concerning this and
other options, refer
to Table 1-2, Section III, or your local
Sales and Service Office.
3320A
Options 3320B Options Description
-hp. Model
Description
or Part No.
3260A
Marked Card Programmer
11237A
Option 002 Kit
11238A
Option 003 Kit (A only)
112388
Option 004 Kit IB only)
112398
Option 007 Kit (B only)
11240A
Option 006 Kit
11048C
50 n Feedthrough
110948
75 nFeedthrough (Opt. 001 only)
1-16. INSTRUMENT AND MANUAL IDENTIFICATION.
1-17. TIlls manual applies to instruments with the serial
number prefix shown on the title page.
If changes have
been made in the instrument since this manual was printed,
a"Manual Changes" supplement supplied with the manual
will define these changes. Be sure to record these changes in
your manual. Backdating information
in Section VIII
ad;lpts the manual to instruments with serial number
prefIxes lower than those shown on the title page. Part
numbers for the manual and the microfIche copy
of the
manual are also shown on the title page.
1·3

Model 3320A/B
2-1. INTROOUCTION.
Section II
SECTION II
INSTAllATION
grounds the instrument. The offset pin on the power cable
is the ground wire.
2-2. This section contains information and instructions
necessary for the installation and shipping of the Model
3320A/B Frequency Synthesizer. [neluded are initial
inspection procedures, power and grounding requirements,
environmental information, power cord information, inter-
facing and instructions for repackaging for shipment.
2-3. INITIAL INSPECTION.
2-4. This instrument was carefully inspected both mechani-
cally and electrically before shipment. It should be free of
mars or scratches and in perfect electrical order upon
receipt. To
confum this, the instrument should be inspec-
ted for physical damage in transit. and the electrical
performance should be tested using the procedure outlined
in Paragraph 5-7. [f there
is damage or deficiency, see the
warranty inside the front cover of this manual.
2-5. POWER REQUIREMENTS.
2-6. The 3320 can be operated from any source of 115 V
± 10% at 48 to 66 Hz. The power receptacle on the rear
panel contains the switch for selecting 115 Vor 230 V
operation and the input power fuse. The instrument leaves
the manufacturer with the 115 V/230 Vswitch in the
115 Vposition. It is necessary to set the switch in the
230 Vposition when operating from a 230 Vsource. Use
the following procedure and Figure
2-1 for setting the
115 V/230 Vswitch:
a. Disconnect power cord and slide the cover to the left
to gain access to the fuse compartment (Figure 2-1a).
b. Remove the Line Fuse by pulling outward on the
Fuse Puller (Figure
2-1 b).
c. With the Fuse Puller positioned as shown (Figure
2-1c), set the 115 V/230 VSelector Switch to the position
that corresponds with the line voltage to be used.
d. Replace the Line Fuse using a 3
A, 250 Vfor 115 V
operation or a1.5
A, 250 Vfor 230 Voperation.
2·7. GROUNDING REllUIREMENTS.
2-8. To protect operating personnel, the National Electrical
Manufacturer's Association (NEMA) recommends that the
instrument panel
and cabinet be grounded. The Model
3320A/B
is equipped with athree-<:onductor power cable
which, when plugged into an appropriate receptacle,
2-9. To preserve the protection feature when operating the
instrument from atwo-contact outlet, use athree-prong to
two-prong adapter and connect the pigtail on the adapter to
power line ground.
2·1a.
!IM ,~ "-
1~1111J11~{
--,
!ij~~Ji
IL..J ~
-
7~·,,1;t:
111/
F J:; c. 2 II "' If·...lst.
III
2-1b.
2-10.
1. POWER CORO RECEPTACLE
2. FUSE COMPARTMENT COVER
3. 115 V/230 V SELECTOR SWITCH
4. FUSE
PULLER
5. LINE FUSE
Figure 2·1. Power Module.
2-1

Section II Model 3320A/B
number for a
3320 power cord eqUipped with the appropri-
ate mating plug for
that receptacle. If the appropriate
power cord
is not included with the instrument,"notify the
nearest -hp- Sales and Service Office
and areplacement cord
will be provided. The
3320 power cord, power input
receptacle and mating connectors meet the safety standards
set forth by the International Electrotechnical Commission
(lEC).
Figure 2·2. Power Receptacles.
2-18. INTERFACING.
8120-1348 8120-1351
8120·1369 8120-1689
2-19. Remote BCD Options.
2-12. REPACKAGING FOR SHIPMENT.
2-13. The following paragraphs contain ageneral guide for
repackaging the instrument for shipment. Refer
to Para-
graph 2-14
if the original container is to be used; 2-15 if it
is not.
If you have any questions, contact your nearest -hp-
Sales and Service Office (See Appendix Bfor office
locations).
2-10. ENVIRONMENTAL REQUIREMENTS.
2-11. The Model 3320A/B is equipped with acooling fan
mounted on the rear panel. The instrument should not be
mounted in any manner which would obstruct the flow
of
air into the rear panel and out the perforated covers. The
filters for the cooling fan can
be removed and replaced or
flushed with soapy water. Two extra mters are furnished as
spares. The Model 3320A/B should
not be operated where
the ambient temperature range exceeds 0° Cto 55° C
(32° F
to 131°F) or stored where the ambient tempera-
ture range exceeds -40° C
to 70° C(- 40° F to 158° F).
2-14. Place the instrument in the original container with
appropriate packing material and seal well with strong tape
or metal bands.
2-15.
If the original container is not to be used, proceed as
follows:
2-20. The 3320A Option 003 and the 3320B Option 004
are designed for remote programming from an external
BCD source. The remote input/output connector is shown
in Figure 2-3. Acomplete description of the input/output
signals and logic levels is given in Section III.
a. Wrap the instrument in heavy paper or plastic before
placing in
an inner container.
b. Place packing material around all sides
of the
instrument
and protect the panel face with cardboard
strips.
C. Place the instrument and the inner container in a
heavy carton
or wooden box and seal with strong tape or
metal bands.
d. Mark the shipping container
"DEUCATE INSTRU-
MENT".
"FRAGILE". etc.
NOTE
If the instrument is to be shipped to Hewlett-
Packard for service orrepair, attach atag to the
instrument identifying the owner and indicating
the service or repair to be accomplished. In·
clude the model number and full serial number
of the instrument. In any correspondence,
identify the instrument by model number and
full serial number.
2-21. An interfacing connector (-hp- Part Number
1251-3056) and
two connector covers (-hp- Part Number
10513-4001) are supplied for external connections. This
connector can be wired to contribute to the user's
application. Afield installation
kit (-hp- Part Number
11238A for the 3320A, or 11238B for the 3320B)
is
available for converting astandard 3320A or 3320B to a
BCD remote controlled option. Installation instructions are
supplied with the kit.
,..
.... .,. .......
Figure 2-3. BCD Remote Connector.
2-22. Remote GPIB Option.
2-16. POWER CORDS AND RECEPTACLES.
2-17. Figure 2-2 illustrates the standard power receptaele
(wall
outlet) configurations that are used throughout the
United States and in other countries. The -hp- part number
shown directly above each receptacle drawing
is the part
2-23. The 3320B Option 007 is designed for remote
programming from an external GPlB (General Purpose
Interface Bus, see Paragraph
I-II) source. The remote
input/output connector is shown in Figure 2-4. Acomplete
description
of the input/output signals and logic levels
required is given in Section
III.
2-2

Model 3320A/B
" .... ".- .. ,.
Figure 2-4. GPIB Remote Connector.
2-24. Remote programming sources for the 3320B Option
007 include the -hp- Model 3260A Marked Card
Programmer,
the -hp- 9800 series Calculators, and the -hp-
2100 series computers. The -hp- 11235A Adapter must be
used to interface all -hp- GPIB SOurces to the 3320B remote
input.
2-25. There are three GPIB bus cables available (See Table
2-1). Up to
15 instruments may be connected in parallel
using these cables; however, the following two restrictions
must be observed.
1. When more than two instruments are connected to
the bus, the cable length added for each additional
instrument cannot exceed six feet per unit.
2. The total cable length to all units cannot exceed
51 feet.
The cables are listed with their respective lengths, in Table
2-1. Atypical bus system is shown in Figure 2-5.
Table 2·1. GPI BBus Cables.
Accessory Number Length
10631 A
3ft.
106318 6
ft.
10631C 12
ft.
2-26. The -hp- Model 3260A Marked Card Reader supplies
its own interface cable. If the card reader cable is -hp- Part
No. 03260-61607, an 11235A Adapter must be used to
interface the card reader
to the 3320B. If the card reader
cable
is -hp- Part No. 0326Q-61605, the 11235A Adapter is
Section 11
not required. However, the following card reader cable
modification must
be performed for proper operation.
3260A CABLE (03260-61605) MODIFICATION
(For use with 3320B Option 007)
1. Remove the four Screws holding the cover on the
interface card on the end of the WI Cable.
2. Move the violet wire to pin 8.
3.
Move the white wire to pin 18.
4. Move the key from pin J to pin T.
5. Replace the screws and covers.
6. The modification is complete.
2-27. The -hp- 9800 series Calculators can be interfaced to
the 3320B using the -hp- 1I144A Interface Card, a
1063IA/B/C GPIB bus cable, and the 11235A Adapter.
2-28. The -hp- Model
2114,2115,2116 or 2100 computers
can be interfaced using the -hp- Model 59310 Interface Kit.
The
59310 kit includes an interface cable, a computer I/O
card, and computer programming instructions. An -hp-
11235A Adapter must be used to interface the cable
supplied with the
59310 kit to the 3320B.
9820,01,
CAI..CUI .. ATOR 3490A
"""
3260,01,
lTAL~ERI
MARKED CARD
(LISTENERl
PROGRAMMER
<CONTROLLER)
(2 FT. MAX.)'
~ ~
GPIB
.us
CABLES
r-- 6 FT. MAX. ----
FREQUENCY
33208
COUNTER FREQUENCY
(TALKER)
SYNTMESIZER
(LISTENER) (LISTENER)
".0.,. ••·»'·
Figure 2-5. Typical GPIB Bus System.
2-3

Section III
Model 3320A/B
:53208 FReQUENCY SYNTHESIZER
Mt* .. <f' ••• n •• o
•• won
CD
00
@
CD
OUTI'UT
@
.:
@@
~I'-"
CD
@@@@
LEvELING
• ... 09 ........ """ ......
LINE
Frequency control for most significant digit of output
frequency. Also controls overrange digit (Paragraph 3·7).
Rear output: Same output as front panel output jack. Must
move cable connector to rear jack from front jack.
(See Section VIII, Manual Backdating)
o
CD
CD
CD
CD
Frequency controls for second and third significant digit of
output frequency (Paragraph 3·71.
Vernier:
Controls two least significant digits of frequency
(Paragraph 3·7).
VERN IN/VERN OUT: Turns vernier oscillator on or off
(Paragraph J.71.
RANGE: Controls range of frequency. 5ranges in standard
instrument ~ 1()()() Hz, 10 kHz, 100 kHz, 1000 kHz, 10 MHz
(Paragraph 3-7).
LINE: Power on/off control.
LEVELING: Controls the amplitude stability. Short loop
for < 10 Hz. Long loop for> 10 Hz (Paragraph J.121.
AMPLITUDE: Sets output amplitude from + 26.99 dBm to
- 69.99 dBm (Paragraph J.91.
Output jack: 3320A=1 Vrms into 50 ohms. 0~13dB con-
tinuous adjustment. 3320B = 5 V rms into 50 ohms_
+ 26.99 dBm = -69.99 dBm, 0.01 dB resolution.
@
@
@
®
®
@
@
LOW LEVEL OUTPUT: Comes through 30 dB pad from
output amplifier. Amplitude follows electronic attenuatar
5etting (9.99 dB).
2~33 MHz: Output from Mixer boar-d. Indicates selected
frequency out of Frequency Generating portion of Synthe~
sizer (tracks front panel with 20 MHz offset).
1 MHz: Oivided output of Reference Oscillator out of
Reference Phase Lock board.
Remote input connector for options 003. 004, and 007 (BCD
and
GPIB) (Paragraphs 3·14, 3·17),
External Phase Lock: Input for Reference 5 MHz External
Oven or External Phase Lock Signal.
Ac power input: Includes input power assembly.
Option 002 Reference Oscillator. 5 MHz crystal oscillator
output and adjustments.
Figure 3-1. Controls, Indicators, and Connectors.
3-0

Model 3320A/B Section III
SE CTI 0 N III
OPERATING INSTRUCTIONS
3·1. INTRODUCTION.
3-2. This section contains information necessary for opera-
tion
of the ·hp- Model 3320A/B Frequency Synthesizer.
Included are descriptions and identification
of front and
rear panel controls, indicators and connectors, operating
instructions,
and remote programming information.
3·3. CONTROLS. INDICATORS and CONNECTORS.
34. Abrief description of each control, indicator and
connector is given in Figure 3-1. Controls, indicators and
connectors requiring additional information are referenced
to descriptive paragraphs within this section.
3·5. FRONT PANEL OPERATION.
3-6. The following paragraphs contain information for
setting frequency, amplitude
and leveling. Also included is
information on remote programming and input/output
connectors.
3·7. Frequency.
3-8. The
3320A/B provides five digits of frequency resolu-
tion plus an overrange digit. The frequency is determined
by the position
of the RANGE control, the two Vernier
controls (VERN IN/VERN OUT and vernier frequency).
and
the three FREQUENCY controls. Thc three FRE-
QUENCY controls set the three most significant digits
and
the overrange digit. The RANGE control places the decimal
point. The vernier controls allow the operator
to adjust two
additional digits
of frequency from 00 to 99. When the
vernier control
is in the VERN OUT position. these
additional digits are always 00. Table
3-1 shows the control
settings for maximum
output in each of the five range
positions.
0- 13 dB porentiometer. Maximum output voltage for the
3320A is I V rms into 50 ohms or 2 V rms open circuit.
3-1 I. The 3320B output amplitude is adjusted by four
front panel AMPLITUDE controls.
Output levels from
+26.99 dBm
to -69.99 dBm with aresolution of 0.01 dB
are obtainable. Each amplitude control operates indepen-
dently, allowing changes
of 0.01 dB. 0.1 dB, IdB or 10 dB
in the output level. Maximum output voltage is 5 V rms
into
50 ohms or 10 VnTIS open circuit.
3-12. Leveling.
3-13. The 3320B frequency response is determined by the
position
of the LEVELING control. For frequencies below
10Hz, the LEVELING control should be in the OFF
position. This prevents the thermopile in the leveling loop
from responding
to the instantaneous value of the output
sinewave. For frequencies above 10Hz, the thermopile will
respond only
to the true rros value of the output frequency,
therefore, the LEVELING control should be
in the ON
(> 10Hz) position.
3-14. REMOTE BCD PROGRAMMING.
3-15. The 3320A Option 003 and 3320B Option 004 can
be remotely programmed with an 8-4-2-1
BCD code. All
functions of the 3320A can be programmed with the
exception
of amplitude, the last vernier digit, and the
power switch.
All functions of the 3320B can be program-
med with the exception
of the last vernier digit and the
power switch. There
is no internal storage capability,
therefore, the program lines must be held until the program
is changed. Figure 3-2 shows the BCD input connector and
the signal inputs for each pin. Paragraphs 3-16 through 3-33
explain each
input/output signal. logiC levels for the BCD
input/outputs are as follows:
3-16. Remote Enable.
3-17. The signal input labeled REN controls the remote/
local mode of operation (REN LOW =remote, REN HIGH
=local). When the 3320A/B is programmed to the remote
mode, the
front panel controls have no effect.
Table 3-1. Frequency Control Settings_
Range
Frequency Digits
Verniet'" Digits
(MAX)
(MAX)
Hz
1299.
99
kHz
12.99 99
kHz 129.9 99
kHz
1299. 99
MHz
12.99 99
3-9. Amplitude.
3-10. The 3320A output amplitude is adjusted by a
State
L LOW (logical" I ")
HHIGH (logical "0")
Requirements
oV to 0.4 V(5 rnA
max.)
or contact clo-
sure
to ground through
<80 ohms.
+2.4 V
to + 5 V or re-
moval
of contact clo-
sure
to ground.
3·1

Section III
AWOO
A200D
ABOO
A20a
A80
A20
AS
A2
VF'
VF1
V,"
Rl
f1
"
FlO
F40
FlOO
F<OO
F800
t Ref Dela., Flag
Ground
0'
02
03
O'
0'
0'
07
08
09
010
0
~
"
~~
012
z.
~
013
~
ou
015
016
011
0"
0"
020
011
022
013
02'
075
028
013
018
A
Ground
0I
A." 02
AlOUD 03
A400
O'
Al00
0'
A40
0'
'"
07
AI 08
'"
09
L Delay Flag
010
~
~~
012
5;
uO
~.
013
U
L Delay In,llale
0"
V-
015
Le~eling
016
02 011
"
0"
"
0"
RI
020
F1
02>
'"
022
FlO
013
F80
0"
FlOO
0"
FlOOD
028
•Rri
013
HDelay 1000"lt
018
Figure 3-2. BCD Input Connector.
Model 3320AjB
F • FrtqlllllCY
A' Amplitude
IN·lo·nv
V' Vim", INfOUT -OUT: Hi' ,5 V
v •• Vffn,e. Frequency
REN' Rem011 Enable
•• Hi •• 5 V
A sign • Pola,i'yoIArnp-. -loa OV
• Rei' • 15 V 10' -hp. 40 bit ard (. Ret Delay Flag)
D' Orlay,np"'l$
•Atl Delay Fllog· Flag for eompulrI .hef Orlay h)$ 21tled
Ihp· 40 bit ufd)
L Delay Flag' Flag for wmpulel aller Detay hIS senled
(other cardsl
L Delay InHialt' In,t,alutht Delay StQuence
HOela., In'llatl' InItIates ,he Delay Sl!qutOCI
33201\-B-2565A
3·18. 33208 Amplitude.
3-19. TI,e 16 signal inputs prefaced Acontrol the four
amplitude digits and the sign
of the amplitude. The inputs
representing each digit are
as follows:
AIOOO }
A2000
A4000
Asign
most significantdigit
of amplitude
polarity
of amplitude
Al }
A2
A4
A8
AIO }
A20
MO
A80
AIOO
}
A200
MOO
A800
3·2
least significant digit
of amplitude
second significant digit
of amplitude
third significant digit
of amplitude
Each digit
is programmed by applying an 8-4-2-1 BCD code
representing the digit desired. The three least significant
digits can
be selected from 0to 9. The most significant digit
can
be selected from 0to 7. The Asign input determines
the polarity
of the amplitude. For a+dBm the input level
must be HIGH. For
a· dBm the input level must be LOW.
When remote programming is used, the mini-
mum output is ·73.00dBm (·75.00dBm
Option 001). If the 3320B is programmed for a
lower level, the output voltage increases.

Model 3320A/B
Section I1J
Example amplitude program:
3-20. Frequency.
3-21. The 13 signal inputs prefaced F control the three
most significant frequency digits plus the overrange digit.
The
inputs representing each digit are as follows:
Each digit is programmed by applying an 8-4-2-1 BCD code
representing the digit desired. All frequency digits Can be
selected from 0to 9.
The overrange digit can be either a 0
or a I. NOTE:Although the maximum frequency of the
3320A/B is specified as 12. 99 MHz. it is possible to
program ahigher frequency. However, the response
is not
specified and will deteriorate.
Overrange
FIOOO ;L
3 rd MSD
FIOO H
F200 L
F400 H
F800 H
3-25. The
three signal inputs prefaced R control the
position
of the range switch. Each position is designated by
a number. There are five range positions available (seven in
the 3320A/B Option 006). Programming is accomplished
by applying a4-2-1 BCD
code representing the number for
the range position desired. The following list identifies
the
range position by number and respective range:
3-27. The signal
input labeled Leveling controls the leveling
mode
of operation (leveling HIGH; ON (> 10Hz), leveling
LOW =
OFF). The programmed frequency (or group of
frequencies) must be considered when selecting the leveling
mode. If afrequency
of 10 Hz or Jess is programmed, the
leveling should
be programmed OFF. This will eliminate
any distortion of the 3320B output caused by the leveling
loop (see Paragraph 3-12).
If afrequency greater than
10Hz is programmed, the leveling should be programmed
ON (> 10 Hz).
3-23. The signal
input prefaced V and the four signal
inputs prefaced VF control the vernier in/out and the
vernier
frequency. Programming conditions for vernier
in/out are HIGH; out and LOW; in. Only the first
vernier digit can be remotely programmed. Programming is
accomplished by applying an 8-4-2-1 BCD code repre-
senting the digit desired.
3-22. Vernier.
3-26. leveling.
*MHz RANGE programmed (See Paragraph 3-24).
3-24. Range.
0; 10 HZ}
I; 100 Hz Option 006
2; 1000 Hz
3; 10kHz
4; 100 kHz
5; 1000 kHz
6; 10 MHz
3-28. Delay and Response.
most significant digit of frequency
least significant digit of frequency
overrange digit
second significant digit of frequency
FI
}
F2
F4
F8
FlO
}
F20
F40
F80
FIOO }
F200
F400
F800
FIOOO
desired amplitude
- 12.34 dBm
LSD 2
nd SD
Al
HAIO L
A2
H
A20 L
A4 LA40 H
A8 H
A80
H
3 rdSD
MSD and Sign
AIOO -H
AIOOO
L
A200
L
A2000 H
MOO H
MOOO
H
A800 HA
sign
L
Example
frequency Program:
desired frequency
LSD
FI ;H
F2; H
F4 L
F8 H
12.34 MHz *
2 nd SD
FlO; L
F20 L
F40 H
F80 H
3-29. The two signal
inputs prefaced Dand the signal
input/outputs labeled Delay Flag, LDelay Initiate, HDelay
Initiate, +Ref. and +Ref. Delay Flag control the delay and
response time of the 3320A/B.
3-30. The delay is simply an internal clock which counts
for the time interval programmed by the Oland D2 inputs.
During
the count sequence, the clock outputs aflag to the
3-3

Section III
external controller. This tlag can be monitored to
determine the accuracy which the 3320A/B frequency and
the 3320B amplitude has sertled. Table 3-2 lists the delay
codes, the clock time interval and the tolerances to which
the frequency and amplitude have sertled. Figure 3-3 shows
the timing sequence
of rhe delay.
3-31. The delay sequence is started by programming a
Delay Initiate (data strobe). Two Delay Initiate inputs are
available.
If the strobe output from the external controller
is HIGH true, the HDelay Initiate input must be used. If
the strobe output from the controller is LOW true, the L
Delay Initiate input must be used.
NOTE
The HDelay Iniate input
is not TTL compa-
tible. It may require aminimum of +4 V
applied to this input to initiate the delay
sequence.
3-32. There are also two delay flag (Holdoff Flag) outputs
available. The LDelay Flag output is standard LOW true
TTL logic. When it
is necessary to have aHIGH true delay
flag, the positive reference voltage from the external
controller (such as the -hp- I2556A 40 bit BCD Interface
Card) can
be applied to the +Ref. input. The +Ref. Delay
Flag
will be held at the +Ref. potential while the delay
sequence is in progress. When the delay sequence is
completed, the +Ref. Delay Flag will go LOW.
3-33. When the 3320B is programmed for alow frequency
(below 1000 Hz) and the leveling is ON (> 10Hz), the
output can become distorted due to the response of the
3320B amplitude section. This response can be slowed to
eliminate the distortion. This is accomplished by pro-
gramming adelay code of 3. With all other delay codes, the
response
is in the fast mode. When the 3320B is in the local
mode, the response
is always in the slow mode.
NOTE
When going from local to remote, the response
is automatically set to the fast mode (delay
code
0) Therefore, if low frequellcies are
programmed, the response should be set to the
slow mode (delay code 3).
~1' DELAY FLAG
0 .L. ..J
~ ~Ef- - - - - - - - -
o+ REF DELAY FLAG
--
DELAY TIME VARIABLE
(See laDle ~·2)
Figure 3-3. BCD Timing Sequence.
34
Model 3320A/B
Table 3-2. Amplitude and Frequency Settling Times.
Delay
Time
% of Range
Amplitude
Code Interval Frequency Tolerance
Tolerance
0 15 ms
.01 - -
1GOms .001 - -
2
300ms -
~
i%
• 3
1500 ms
--
within rated
accuracy
.. Response in slow mode (See Paragraph 3·33).
3-34. REMOTE GPIB PROGRAMMING.
3-35. The GPIB (General Purpose Interface Bus) remote
control option permits the Model 332GB to operate on a
single data/control bus with several other instruments. A
typical GPIB bus system is shown in Figure 4-8. Each bus
contains eight data lines and seven control lines. The ASCII
(American Standard Code for Information Interchange)
code format
is used to transfer data on the eight data lines.
3-36. Atotal
of 15 instruments may be connected in
parallel to the bus. Each instrument on the bus is assigned
an address (or addresses) so that it can be selected
individually by an external controller. This enables the
external controller to determine which instruments will be
communicating on the bus at any given time.
An instru-
ment will have alisten address
if it can receive data, atalk
address
if it can transmit data, or both alisten and atalk
address
if it can both receive and transmit data. For
example, the 3320B GPIB option has only alisten address,
which allows the controlling instrument to instruct the
3320B to receive programming information as outlined in
the following paragraphs.
Table 3-3. Addressing Codes.
Addressl 40
20 I 10
421
40 10 0 0 0 0
41
1 0 0001
42 1000 1 0
43 100011
44
1 0 010 0
45
10 0 10 1
46
1001 1 0
47 100 1 1 1
50 1 0 1 0 0 0
51 1 0 1 0 0 1
52 1010 1 0
53
10 1 0 1 1
54 1 0 1 1 0 0
55 1 0 1 1 01
56 1 0 1 1 1 0
57 101111
60 1 1 0 0 0 0
61 1 1 0 0 0 1
62 1 1 0 0 10
63 1 1 0 011
64 1 1 0 1 0 0
65 1 1 010 1
66
1 1 0110
67 1 1 0 1 1 1
70 1110 0 0
71 1110 0 1
72 111010
73 1 1 1 0 1 1
74
111 1 0 0
75 1 1 1 101
76 111 1 1 0

Model 3320A/B Section
1II
Character Octal Binary
Table 3-5. ASCII Programming Codes.
Digits for address·;
amplitude, frequency,
vernier, etc.
·Address clear
Amplitude preface
Command (initiates delay)
Delay code preface
Frequency preface
Vernier "IN"
Vernier "OUT"
Range preface
Vernier preface
Polarity of amplitude
Polarity of amplitude
a
10 Hz
~
optional
1
100 Hz (A6 assembly)
2
1000 Hz
3
10 kHz
4
100 kHz
5 1000 kHz
6 10 MHz
Range Codes
Character Range
?
a
1
2
3
4
5
6
7
8
9
+
A
C
D
F
K
M
R
V
077 0111111
101 1000001
103 1000011
104 1000100
106 1000110
113 1001011
115 1001101
122 1010010
126 1010110
053 0101011
055 0101101
060 0110000
061 0110001
062 0110010
063 0110011
064 0110100
065 0110101
066 0110110
067 0110111
070 0111000
071 0111001
054 0101100 Function execute
I111 1001001 local enable
•Address
and clear must be accompanied by an MAE. On the
3260A Card Reader, MRE = 200 (address"" -267, clear = 277).
Mnemonic Signal Name
DAC
Data Accepted
DAV Data Valid
MRE
Multiple Response Enable
REN Remote Enable
RFD
Ready For Data
SRO
Service Request
EQP End
Output
Dial
DI02
DI03
DI04
Data Input/Output
DI05
bits 1 through 8.
DI06
D'07
DI08
Table 3-4. GPIB Bus Signal Mnemonics.
3-39. For convemence
and brevity, each GPIB bus signal
line
is identified by amnemonic, which is an abbreviation
of the signal name. Table 3-4 lists the seven control lines
and eight data lines used
on the GPIB bus.
3-38. Aprincipal advantage
of the GPIB bus system is that
all information is routed over the same 15 lines. For this
reason standard cables are used
to connect each instrument
to the bus. Section II lists the GPIB bus cables available.
3-37. The listen address for the 3320B
is normally the
ASCII character
3, octal code 063, but may be changed by
means
of internal jumper wires on the GPIB Input
Assembly (A37). Instructions for changing the address are
given in Note 2, Figure 7-14. Table 3-3 lists the different
addresses which can be assigned.
3-40. An Hpreceding amnemonic indicates
that the signal
is HIGH true, Lindicates
LOW is true. For example, L
DAV indicates that a LOW true signal is required for adata
Valid signal.
All GPIB lines are LOW true except HRFD
and HDAC, which are HIGH true. Table 1-2 lists the signal
levels required.
NOTE
In the 3320B the Data Input/Output bit 8
(DI08) and Service Request (SRQ)
are not used
(no connections).
GND
(ll eala InpUI Bil 2
III
Dilla InpUI Bit .(
III Dilla Input Bit 6
(ll Dati Valid
IHl Ready For Dala
tLl End Output
CIRCUIT SIO£
IOOTTOM
B
0_
DB
DC
00
DE
OF
OH
OJ
OK
OL
0.
ON
OP
OR
Os
OT
OU
OV
GND
III Dalil Input Bit 1
III
Dilil Input Bil 3
III Oil. Input Bit 5
III
Data Input Bill
(ll Remote Enable
(til Oil' Acupled
III
Multiple Rap,)n5:\!
Enable
III Delay Flag
COMPONENT SlOE
,~ _
01
02
03
04
05
05
01
0'
0'
DID
011
012
013
014
015
018
011
o 1B
3-41. All 3320B front panel functions are programmable
with the exception
of the last vernier digit and the line.
Table 3-5 lists each
of the functions and the octal codes,
the ASCII character for each code, and the seven bit binary
code for each octal code. The binary code
is applied to the
seven Data
Input lines on the remote input/output con-
nectar. Figure 3-4 shows the remote connector pin numbers
and the
input/output signals for each pin.
Figure 3-4. GPIB Input Connector.
3-42. The first step in GPIB programming
is to address the
3320B. Addressing is accomplished by applying the address
code
to the data line, setting the MRE (Multiple Response
Enable)
LOW, and setting DAV (Data Valid) LOW. An
example program is listed in Table 3-6. The 3320B does
not
3-5

Section III
have
to be in the remote mode to be addressed. Conversely.
it must be addressed before it can be put into the remote
mode.
NOTE
When power is initially applied the 3320B may
or may not be addressed. This is why the
"Address Clear" command (ASCI! ?) is recom-
mended prior to addressing any instrument(5)
on the GPIB Bus.
3-43. To put the 3320B into the remote mode (after it has
been addressed) set the REN
(Remote Enable) LOW, MRE
HIGH, apply the Function Execute code (ASCII comma)
to
the data lines, and set DAV LOW. The REN can be set
LOW at any time prior to the Function Execute (ie., while
addressing)
but the 3320B will not go into the remote
mode until the Function Execute
and L DAVis applied.
The Function Execute can be applied during the function
programming sequence (See Notes, Table
3-<i).
Table 3-6. GPI BProgramming.
Example: 5.0 kHz frequency Vernier Out, - 5.00 dBm Amplitude
60 ms delay.
Instruction State or
Binary Codes
Octal Code
~
<0
"'
.. MN:;
0 0 0 0 0 0
is 0 is
is is is is
100 40 20 10 421
MRE
lOW
Clear 077"" 011 1 1 11
Address
063 0 1 1 0 0 11
REN
lOW
MRE HIGH
R 122 1 0 1 0 0 1 0
4 064 0 1 10 1 0 0
' ..
054 0101 1 0 0
F
106 1 0 0 01 1 0
5
065 01 1 0 1 0 1
0 060 01 1 0 0 0 0
054 0 1 0 1 1 0 0
m 115 1 0 01 1 01
A101 10 0 0 0 0 1
055 010 1 1 01
5
065 0 1 1 0 1 01
0
060 0 1 1 0 0 0 0
0
060 0 1 1 0 0 0 0
054 0 1 0 1 1 00
0 104 10 0 0 1 00
1061 0 1 1 0 0 0 1
054
010 1 1 0 0
C 103 10 0 0 0 1 1
""Each
code applied to the data lines must be followed by a
DAV lOW.
"·Instrument goes to remote mode at this time.
3-44. When power is initially applied, the 3320B may go to
the remote mode for afew seconds, then to the local mode
even
if REN is held LOW. It will remain in the local mode
until the address
and a Function Execute is programmed.
3-6
Model
3320AjB
3-45. When programmed to the remote mode, the condi-
tion
of the 3320B output depends on the position of a
jumper wire on the A38 assembly (See Figure 7-14). If
there is a jumper wire between points A and Bon the A38
assembly, the 3320B will go to the conditions listed below:
FREQUENCY
800 Hz
RANGE
........•......•....... 1000 Hz
M.1PLITUDE ....•........... - 69.00 dBm
VERNIER OUTIO Hz
DELAy 1500ms
LEVELING ON(> 10 Hz)
If there is no jumper between points A and Bon the A38
assembly,
the 3320B will go to the previously remote
programmed conditions when programmed
to the remote
mode. The
3320B leaves the factory with no jumper.
346. The second step in GPIB programming is the func-
tion programming. This
is accomplished by applying the
ASCII code, representing the information desired,
to the
seven data lines and strobing
the information into the
3320B. The LDAV is the strobe pulse. Each seven bit code
applied
to the data lines must be accompanied by an
LDAV. The programming information for each
3320B
function is applied in two parts, the preface command
representing the function (ie., Vfor Vernier) and the
desired digits for that function (ie.,
99 for aVernier setting
of 99). After each preface command and the digits have
been
strobed into the 3320B, they must be followed by a
Function Execute.
3-47. If
all functions have been programmed and it is
desired to reprogram aspecific function, it is only necessary
to reprogram that function. When frequency or amplitude
is programmed the instrument assumes th~ leadjng zeros.
Loading sequence
of the digits programmed are from right
to left. If an amplitude polarity is not programmed, the
instrument assumes a+polarity. Figure
3-5 shows an
example program using amarked card for the
3260A
Marked Card Programmer. The 3260A does not handshake.
The strobe marks on the right edge
of the card represent
the
DA V. The 200 bit on the card represents the MRE.
3·48. Handshake.
3-49. The Data Valid (DAV), Ready for Data
(RFD), and
Data Accepted (DAC) signals form a "handshake" se-
quence, controlling
the hming for data transfer on the Data
lines. When an address code
or aprogramming instruction is
applied to the seven data lines, the external controller must
set the DAV
LOW. This indicates to the 3320B that data is
available on the data lines. If the 3320B is not processing
previous data,
the RFD will be HIGH and the DAC wiIJ be
LOW. Approximately three microseconds after the DAVis
set LOW by the external controller, the 3320B will set DAC
HIGH and
RFD LOW. The DAC indicates to the controller
that the 3320B has accepted the data and is processing it.
The
RFD signal indicates to the external controller that the
3320B is
not ready for more data. When the 3320B has set