Hewlett-Packard 3325A Synthesizer/Function Generator User Manual

LAS.
i
La E
Lal
ve an Уря
ta
= X В
- E pea y | |
чи A A |
"— ! Do, -
ho
% D т.
ve 7 ”. " 4
EE:
EN:
ta: Ig
AES LR 1 E
BR
18 EN
A HI
TR
matado
f Te |
He re
Rare:
tut Eliane *
a
pars
of Chem Le
PACA AR GAA AR TT СД Tn ta RT
Se sen
TEE E e
Ta as
HEWLETT
PACKARD
VGZEE dy:
ta
LE
18] AA 44
18)
PRI
LES
Wo WW WW Wow ow LE UN
A LA LUI UM
HE
HEWLETT
PACKARD
OPERATING MANUAL
MODEL 3325A
SYNTHESIZER/FUNCTION GENERATOR
Serial Numbers: All
IMPORTANT NOTICE
This manual applies to all instruments. Docu-
mentation changes required after the printing
of this manual are shown on a manual
changes supplement which accompanies this
manual. |
| WARNING À
To prevent potential fire or shock hazard, do not expose
equipment 10 rain or moisture.
Manual Part No. 03325-90013 |
© Copyright Hewlett-Packard Company 1978, 1981, 1984
P.O. Box 69, Marysville, Washington 98270
Printed: May 1984
lai Ld
18) LE)
LA]
18
fal 185
IR
WW www
LES U Ww Lgl El US)
RES IR) ES) 18) LA!
ES UN
| HEWLETT
4 ERCKARO
SAFETY SUMMARY
The foliewing general safety precautions must be observed during all phases of operation, service, and repair of this
instrument. Failure to comply with these precautions or with specific warnings elsewhers in this manual violates >
safety standards of design, manufacture, and intended use of the instrument. Hewlett-Packard Company assumes no
liability for the customer's failure to comply with these requirements. This is a Safety Class 1 instrument.
GROUND THE INSTRUMENT
To minimize shock hazard, the instrument chassis and cabinet must be connected to an elec-
trical ground. The instrument is equipped with a three-conductor ac power cable. The power
cable must either be piugged into an approved three-contact electrical outlet or used with a
three-contact to two-contact adapter with the grounding wire (green) firmiy connected to an
electrical ground (safety ground) at the power outlet. The power jack and mating piug of the
power cable meet International Electrotechnical Commission (IEC) safety standards.
DO NOT GPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases or fumes. Operation of any
electrical instrument in such an environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made by qualified maintenance personnel. Do not replace components
with power cable connected. Under certain conditions, dangerous voltages may exist even with
the power cable removed. To avoid injuries, always disconnect power and discharge circuits
before touching them.
— DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another person, capable of rendering first
aid and resuscitation, is present.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT
Because of the danger of introducing additional hazards, do not install substitute parts or per-
form any unauthorized modification to the instrument. Return the instrument to a Hewlett-
Packard Sales and Service Office for service and repair to ensure that safety features are main-
tained.
DANGEROUS PROCEDURE WARNINGS
Warnings, such as the example below, precede potentially dangerous procedures throughout
this manual. Instructions contained in the warnings must be followed.
WARNING |
Dangerous voltages, capable of causing death, ara present in this instrument, Use BX-
trame caution when handling, testing, and adjusting.
SAFETY SYMBOLS
General Definitions of Safety Symbals Used On Equipment or in Manuals.
NOTE:
Instruction manual symbol: the product will be marked with this
symbol when it is necessary for the user to refer to the instruction
manual in order to protect against damage to the instrument.
Indicates dangerous voltage (terminals fed from the interior by
voltage exceeding 1000 volts must be so marked).
Protective conductor terminal. For protection against electrical
shock in case of a fault. Used with field wiring terminals to in-
dicate the terminal which must be connected to ground before
operating equipment,
Low-noise or noiseless, clean ground (earth) terminal. Used for a
signal common, as well as providing protection against electrical
shock in case of a fault. A terminal marked with this symbol must
be connected to ground in the manner described in the installation
(operating) manual, and before operating the equipment.
Frame or chassis terminal. A connection to the frame (chassis) of
the equipment which normally includes all exposed metal struc-
tures.
Alternating current (power line).
Direct current {power line).
Alternating or direct current (power line).
The WARNING sign denotes a hazard. It calls attention to a pro-
| - cedure, practice, condition or the like, which, if not correctly per-
# formed or adhered to, could result in injury or death to personnel.
The CAUTION sign denotes a hazard. It calls attention to an
operating procedure, practice, condition or the like, which,if not
correctly performed or adhered to, could result in damage to or
destruction of part or all of the product.
The NOTE sign denotes important information. It calls attention
to procedure, practice, condition or the like, which is essential to
highlight.
e
are
À
Lab: Lad tdi Le
Lal
BHI EF
I EA: “El igi HR j
&!
ан. LAS Lis y REI УВ! iki 1514 Hel E.
LA 184 LEE kgs Lad
ILE) RE LA: Hui Laid
Model 3325A
Section | Page
1. GENERAL INFORMATION .............. 1-1
1-1. IntroducHlOM 0... 1-1
1-5. Instrument Description ............. 1-1
1-9, Specifications........20224 41000240 1-1
1-11. Supplemental Operating Information . 1-1
1-13. Remote Control.................... 1-1
1-13. Options ......... reses. 1-1
1-17. Accessories Supplied. ............... 1-5
1-19. Accessories Available ............... 1-5
1-21. Instrument and Manual Identification 1-6
1-24. Safety Considerations. ............ ..1-6
1-27. Recommended Test Equipment ...... 1-6
Section Page
II. INSTALLATION ....... 2.0000 2-1
2-1. Imtroduction....................... 2-1
2-3. Initial Inspection .............. 00... 2-1
2-5. Preparation For Use................ 2-1
2-6. Power Requirements. ............. 2-1
2-8. Line Voltage Selectión ....... a 2-1
2-10. Power Cable .................... 2-1
2-12. HP-IB Connections .............. 2-1
2-15, 3325A Listen/Talk Address ....... 2-2
2-17. HP-IB Description ............... 2-3
2-19. Connecting Oven Option 001 ...... 2-3
2-21. Operating Environment ............. 2-3
2-23. Cooling System .............. 23
2-26. Bench Operation ................. 2-3
2-28. Rack Mounting .................. 2-3
2-30. Storage and Shipment .............. 2-3
2-31. Environment ........... aaa 2-3
2-33. Instrument Identification. ......... 2-5
2-35, Packaging... ....... erererre.. 2-5
Section Page
HI. OPERATION..................... ee 3-1
3-1. introduciton............. aos 3-1
3-3. Panel Features... a Ce 3-3
3-5. Power/Warm-Up ............... 3-3
3-8. Initial Conditions .................. 3-3
3-10. Self Test ...... i. 3-3
3-12. Front/Rear Signal Output........... 3-3
3-14. Sync Output... ...... ee... 3-3
3-16. External Reference Input. ........... 3-4
3-18. 10MHz Oven Option 001 ........... 3-4
3-20. Manual Programming .............. 3-4
3-22. Clear Display... ................. 3-4
3-24. Entry Errors......... ea 3-4
3-26. Function Selection ............... 3-4
Frequency Entry ............e.—... 3-4
3-28.
TABLE OF CONTENTS
Section
3-30.
3-32.
3-34.
3-36.
3-39.
3-41,
3-43,
3-46.
3-49.
3-55.
3-38.
3-60.
3-62.
3-66.
—. 3-68.
3-70.
3-72.
3-74.
3-76.
3-78.
3-81,
3-83.
3-88.
3-89.
3-91.
3-93.
3-95,
3-97.
3-100.
3-101.
3-103.
3-107.
3-109.
3-111.
3-113,
3-115.
3-118,
3-120.
3-122.
3-124.
3.126.
3-128.
3-130.
3-132.
Table of Contents
Page
Frequency Limits ......... dada 3-4
Frequency Display and Resolution .3-5
Auxiliary Output (Sine Function Only)3-5
Amplitude Entry ...........— eee .e.e. 3-5
Amplitude Calibration. ........... 3-5
High Voltage Output Option 002 ..3-6 -
DC Offset... rara. 3-6
Phase Entry ............... ..... 3-7
Frequency Sweep................. 3-7
Sweep Marker ................... 3-9
Sweep X Drive Qutput .......... 3-10
Sweep Z Blank Output .......... 3-10
Amplitude Modulation. .......... 3-10
Phase Modulation. ....... ads 3-11
Modify Keys ................... 3-11
Store and Recall ................ 3-11
Орегагог’5 СПесК$ ..,............. 3-11
Self Test ............. cea BH
Output Checks. ........... FR 3-11
Operator’s Maintenance. ........... 3-12
HP-IB Operation ................. 3-12
General HP-IB Description.....…. 3-13
Definition of HP-IB Terms
and Concents......... o ..ecec e... 3-13
Basic Device Communication |
Capability .............. RS 3-14
Message Definitions ............. 3-14
3325A Response to Messages ..... 3-14
HP-IB Work Sheet .............. 3-14
HP-IB Addressing. .............. 3-14
3325A Remote Programming ..... 3-14
3325A HP-IB Capabilities. ....... 3-14
Developing an HP-1B Program ...3-15
Universal and Addressed
COMmMandS e a 044 3-17
Placing the 3325A in Remote.....3-17.
The 3325A Address
Programming Data Transfer Mode 3-21
Programming Entry Parameters...3-21
Programming Waveform Function 3-21
Programming Binary (On or Off)
Functions |
Programming Selection Functions .3-22.
Programming Execution |
Functions
Programming Amplitude Units
Conversion ......... —_.oeecerero. 3-23
Programming Storage Registers ...3-23
Table of Contents
Section
Table Page
1.1 Specifications ..... eae ...1-2
1-2. Supplemental - Information ........... 1-3
1.3. HP-IB Interface Capability .......... 1-6
1-4. HP-IB Response Times ............« 1-7
1-5, Recommended Test Equipment....... 1-8
2.1, HP-IB Addresses ..........eee..e.. 2-4
3-1. Operating Information ......... Ce 3-1
3-2. Amplitude Limits of AC Functions ...3-3
1.3. High Voltage Output Amplitudes
(Option 002) ........—..- nara. 3-6
3-4. Maximum DC Offset |
with any AC Function ........eeee—- 3-7
Figure Page
2-1. Power Cables... o.oo 2-2
2.2, HP-IB Connector .......eeerevrnveeo 2-2
3.3, Rack Mount and Handle Kits ........ 2-5
3-1. Front and Rear Panel Controls ....... 3-2
3-2. Maximum DC Offset
-— with AC Functions ....... aran 3-8
vi
3-134.
3-136.
3-138.
3-140.
3-142.
3-144.
3-146.
3-148.
3-150.
3-152.
3-154.
3-136.
Appendix A.
Appendix B.
TABLE OF CONTENTS (Cont'd)
| Page
Service Requests .........—e=...> 3-23
Serial Poll... iis 3.23
Status Byte ...... oii 3.24
Busy Flag .......00000000 01 eee 3-24
Sweep Flag .........0.0000000 HH 3-24
Masking or Enabling Service
Requests ......e..ereerierren 3-24
Interrogating Program Errors..... 3-24
Interrogating Entry Parameters .. . 3-25
Interrogating Function |
(Waveform} 3-25
interrogating Miscellaneous
Parameters .........e.—e.. naa 3-26
Using the Interrogate Capabillty - ‚3-26.
3325 А Programming Procedure .. .3-27
Meta Messages Block
Diagrammed.........er...- A-1
Programming the Model 3325A
with the 9825A Calculator .
.B-1
Section Page
IV. PERFORMANCE TESTS ..... ea 4-1
A-|, Introduction.............. ee 4-1
4.3. Calculator-Controlled Test .......... 4-1
4-5. Operational Verification ............ 4-1
4-8. Required Test Equipment ......... 4-1
4-10. Self Test... .Ñ...re.erecrreeree 4-1
4-12, Sine Wave Verification ...... A
4-14, Square Wave Verification ......... 4-2
4-16.” Triangle and Ramp Verification .. ‚4-3 -
4-18. Amplitude Flatness Check......... 4-3
4-20, Sync Output Check ............—- 4-4
4-22. Frequency Accuracy ..........—... ‚4-4
4-24, Output Level and Attenuator
Check 0000000000 eK ..A-4
4-26. Harmonic Distortion ” Test ......... 4-3
4-28. Close-In Spurious Signal Test ..... 4-6
4-30.
LIST OF TABLES
Table
3-3.
3-6.
3-7.
3-8.
3-9.
3-10.
3-11.
4-1.
Model 3325A
HP-IB Interface Test ............ + 4-6
| Page
General Interface Management Lines 3-14
Definition of Meta Messages.......- 3-15
3325A Implementation of Messages. .3-16
Interface Functions ........ee_mem..-. 3-16
Summary of 3325A
Programming (ASCII) ......... ae 3 18
Programming Codes ..........—. 3-19
SRQ Mask/Enable Data ........... 3-25
Test Equipment Required
for Operational Verification ......... 4-2
LIST OF ILLUSTRATIONS
Figure
3-3.
4-1.
Interface Connections.
and Bus Structure... 3-13
Harmonic Distortion Verification
(High Voltage Output)..............- 4-5 8 :
A
A
ME
ta a
di
isl ¡La!
id:
ta, bid
ta
183 AI (dr Am) YR] AB AM! dE UE
UY
Table
1-1.
1-2.
1-3.
1-4.
1-5.
Paragraph | | Page
1-1, Introduction ...................... PS ce 1-1
1-5. Instrument Description ................. ec ado
1-9. Specifications ........ FO a 4 1-1
1-11. Supplemental Operating Information... ..... iii ican 1j
1:13. Remote Control ................00 00 A. aaa nene. 1-1
1-15. Options .................... ee es J a 1-1
1-17. Accessories Supplied ......... 2200000000. RS 4-5
1-19, Accessories Available eee 1-5
1-21. Instrument and Manual Identification (ee 1-6
1-24, Safety Considerations .... o.oo i ee AA 1-6
1-27. Recommended Test BQUiDIent «oor een 1-6
LIST OF TABLES
Specifications ........ 02.000,00: dry eerrecarerveerarderarererarerdercaverec 1-2
Supplemental Information ................. TN 1-3
HP-IB Interface Capability ............ ee хе FE a» 1-6
HP-IB Response Times....... aaadia er erecererearcenro Ce FT 1-7
Recommended Test Equipment ......... Nando ere dararrdererereracroorrena. 1-8
al
E
Lik
18: 48)
1E) 48) AA
(LR iB) 483 ABl LES
AA] LES LE Le
LE 18
Py
й
AT
ЗК
LU LA dE) UV а
Моде! 3325 А
General Information
SECTION |
GENERAL INFORMATION
1-1, INTRODUCTION.
1-2. The Operating and Service Manual contains infor-
mation required to install, operate, test, adjust, and serv-
ice the Hewlett-Packard Model 3325A Synthesizer/Func-
tion Generator. The Operating Manual supplement is a
copy of the first three sections of the Operating and Serv-
ice Manual, plus the Operational Verification procedures
— from Section IV. The supplement should be kept with
the instrument for use by the operator. The part num-
bers of both the Operating and Service Manual and the
Operating Manual supplement are shown on the title
pages.
1-3. Also shown on the title page of this manual 1s a
Microfiche part number. This number can be used to
order 4 X 6 inch transparencies of the Operating and
Service Manual. Each Microfiche contains up to 96
photo-duplicates of the manual pages. The Microfiche
package includes the latest Manual Changes supplement
as well as pertinent Service Notes,
1-4. Additional copies of the Operating and Service
Manual, Operating Information Supplement, or Service
* Notes can be ordered through your nearest Hewlett-
Packard Sales and Service Office. (A list of these offices
is provided at the end of this manual.)
1-5. INSTRUMENT DESCRIPTION.
1-6. The Model 3325A Synthesizer/ Function Generator
produces the following signals at a minimum frequency
of 1 uHz and maximum frequency of:
Sine wave 20 MHz
Square wave i0 MHz
Triangle 10 kHz
Positive slope ramp 10 kHz
Negative siope ramp 10 kHz
Frequency may be selected with up to eleven digits of
resolution. Output amplitude is 1 mV to 10 V peak-to-
peak. The output level may also be selected or displayed
in Y rms or in dBm (50 ohms). Any function may be de
offset up to x 4.5 V, or the output may be dc only up to
+5 V. An optional high voltage output produces up to
40 Y p-p into = 500 ohms load.
1-7. Frequency sweep of all functions is provided in
linear or log sweep, at sweep times of 10 milliseconds to
99.99 seconds for linear sweep. Maximum time for log.
cd, SWeEP is 99.99 seconds and minimum time is 2 seconds
“y for single log sweep and 0.1 second for continuous log.
sweep. Single linear sweep may be up or down, while
continuous sweep is up/down/up, etc., in the linear
mode and up/up, etc., in log mode.
1-8. The Model 3325A is fully programmable through
the rear panel Hewlett-Packard Interface Bus (HP-IB)
connector. A device such as a programmable calculator
is capable of remotely controlling the 3325A. Interface
information is given in Section II of this manual, and
programming information В Ш Section HI.
1-9. SPECIFICATIONS.
1-10. Instrument specifications are listed in Table 1-1.
These specifications are the performance standards or
limits against which the instrument is tested. Any
changes in specifications due to manufacturing, design
or traceability to the U.S. National Bureau of Standards
are included in Table 1-1 of this manual and/or the
Manual Changes Supplement.
1-11. SUPPLEMENTAL OPERATING INFORMATION.
1-12. Table 1-2 contains information describing general -
operating characteristics of the 3325A. This informa-
tion is supplemental operating information and is not to
be considered as specifications.
1-13. REMOTE CONTROL.
1-14, Table 1-3 lists the HP-IB interface capabilities of
the Model 3325A in conformity with IEEE Standard
488-1978, “Standard Digital Interface for Programmable
Instrumentation’’. HP-IB response times are given in
Table 1-4. a.”
115. OPTIONS.
1-16. The following options extend the frequency
stability and output amplitude capabilities of the Model
3325A:
Option 001
Option 002
High Stability Frequency Reference
High Voltage Output -
The following options indicate the line voltage to which.
the instrument was set at the factory:
Option 100 - Nominal 100 Y ac
Option 120 Nominal 120 Y ac
Option 220 Nominal 220 Y ac
Option 240 Nominal 240 Y ac
1-1
- General Information
Table 1-1. Specifications.
Model 3325A
FUNCTIONS AND FREQUENCIES
Sine Wave:
Signal Gutput (Front or Rear Panel}: |
0.000 001 Hz to 20 999 999.999 Hz
- Auxiliary Output {Rear Panel}:
21 000 000.000 Hz to 60 999 999,999 Hz
Underrange to. 19 000 000.001 Hz
Square Wave: 0.000 001 Hz to 10 999 999.999 Hz
Triangle: 0.000 001 Hz to 10 999,999 999 Hz
Positive and Negative Siope Ramp:
0.000 001 Hz to 10 999.999 999 Hz
FREQUENCY RESOLUTION
1 ahz for frequencies below 100 kHz
1 mHz for frequencies 100 kHz and higher
FREQUENCY ACCURACY {Standerd Instrument)
+5 x 10% of selected value (209 to 30°C)
FREQUENCY STABILITY (Standard Instrumant)
+5 x 107% per year (20° to 30°C)
SIGNAL CHARACTERISTICS
| Sine Wave:
Harmonic Distortion relative to the amplitude of the
fundamental frequency at full output on each range
Fundamental No Harmorsic
Frequency Greater Than
0.1 Hz to 50 kHz ‚ = 65 de
50 kHz to 200 kHz —600B
200 kHz to 2 MHz — 40 dB
2 MHz to 15 MHz — 30 dB
15 MHz to 20 MHz — 25 dB
Spurious: All non-harmonically related output signals will
be more than 70dB below the carrier {-60dB with DC off-
set), or less than -80dBm, whichever is greater.
Phase Noise: = -60d8 (Option 001 Only) for a 30kHz
hand centered on a 20MHz carrier {excluding + 1Hz
about the carrier).
Square Wave:
Rise/Fali Time: = 20 nanoseconds, 10% to 80% at fui
Output
Symmetry: < .02% of period + 3 nanoseconds
Gvershoot: < 5% of peak to peak amplitude at fuil output
Triangle:
Linearity, 10% to 90%, best fit straight line:
= 0.05% of full p-p output for each range
Ramps {Positive or Negative Slope}:
Linearity, 10% to 80%, best fit straight line: + 0.05%
of full p-p output for each range
Retrace Time: <= 3 microseconds, 90% to 10%
Ramp Period Variation: < + 1% of period, maximum
AMPLITUDE
Amplitude Accuracy with no Attenuation {Attenuator
range 1} into 50 ohm Load, (No D.C. offset)
Function and
feguency range.
Tolerance relative to
programmed amplitude -
Sine Wave
.001 Hz to 100 kHz + 0,1 dB
Square Wave
001 Hz to 300 kHz + 1.0%
Triangle
.J01 Hz to 2 kHz + 1.5%
2 kHz to 10 kHz + 5%
Ramps
004 Hz to 500 Hz + 1,5%
500 Hz to 10 kHiz + 19%
Flatness with no attenuation
(Attenuator Range 1} into
Tolerance relative to
programmed amplitude at
Amplitude accuracy with
D.C. offset and no
attenuation (Range 1) into
a 50 Ohm load 1 kHz
Sine Wave
100 kHz to 20 MHz + 0.3 dB
Square Wave
| 100 kHz to 10 MHz + 10%
Tolarance relative 10
programmed amplitude.
a 50 ohm load,
Sine Wave
.00% Hz ta 100 kHz + 0.3 dB
Square
‚0017 Hz to 100 kHz + 3%
Triangle
.001 Hz to 2 ki iz + 4%
2 kHz to 10 kHz + 6%
Ramps -
.003 Hz to 500 Hz + 4%
500 Hz to 10 kHz + 11%
Attenuator Accuracy (these
errors are additive with the
amplitude accuracy errors)
Tolerance relative to
programmed amplitude,
.001 Hz to 20 kHz
Attenuator Range +
No Error
001 Hz to 100 kHz
Attenuator ranges
2 through 8
+ 0.1 dB
100 kHz to 10 MHz
Attenuator ranges
à through 8
+ 0.2 d8
10 MHz to 20 MHz
Attenuator ranges
2 through 4
Attenuator ranges
5 through 8
+ 0,2 dB;
+ 0.5 dB
1-2
hal ab dal
Ш 1
WW ww wi ww
Lan
Model 3325A
General Information
Table 1-1. Specifications (Cont'd).
Accuracy of BC Offset {into 50 ohms):
DC Only {No AC Function): = 0.4% of full peak out-
nut for each range”
* Except lowest attenuator range whare accuracy is +
20 uV.
DC + AC, <1 MHz: + 1.2%, Ramps + 2.4%
DC + AC, >1 MHz: + 3%
AMPLITUDE MODULATION (of Sine Function only)
Modulation Envelope Distortion: — 30 dB to 80% moduia-
tion at ? kHz, O Y de Offset |
PHASE OrFSET
Range: + 719.95 with respect to arbitrary starting
phase, or assigned zero phase
Resolution: 0,19
Stability: + 1° phase/°C
Increment Accuracy: +0.29
PHASE MODULATION
Linearity {Sine Function): £ 0.5%, best fit straight line
SYNC OUTPUT
Output Levels into 50 ohms:
Square wave with Vhigh = + 12V, Vaw S + 0.2V
X DRIVE OUTPUT
Amplitude: G to +10 V dc linear ramp proportional to
sweep frequency {sweep up oniyj
Linearity, 10% to 90%, best fit straight line:
+. 1% of final value. Specified for all linear sweep
widths which are integral multiples of the minimum
sweep width for each function and sweep time.
OPTION 001
HIGH STABILITY FREQUENCY REFERENCE
Arnbient Stability; +5 x 10° (0° to 85°C referenced to
+ 30°C)
Aging Rate: +5 x 108 per week {after 72 hours
continuous operation)
+1 x 107 per month {after 15 days
continuous operation)
OPTION 007
HIGH VOLTAGE OUTPUT
Frequency Range:
Sine and Square Wave: 1 auHz to 1 MHZ
Triangle and Ramos: 1 pHz to 10 kHz
Amplitude:
Range: 4mVp-p to 40Vp-p (> 500, < 500pF load)
maximum output current, + 40mA
Accuracy (at 2 kHz}: + 2% of full output for each
range
Flatness: + 10% of programmed amplitude
DC Offset:
Range: 4 times the range of the standard instrument
Accuracy: + [1% +25 mV) of fuli output for each
range
Signal Characteristics:
Sine Wave Harmonic Distortion (relative to the fun-
damental frequency at full sutput into = 500 ohms,
< 500 pF
Fundamental No Harmonic
Frequency Greater Than
10 Hz to 50 kt iz -65 dB
50 kHz to 200 kHz … 60 dB
200 kHz to 1 MHz . - 40 de.
Square Wave:
Rise/Pali Time: <
full output with
125 nanoseconds, 10% to 50% at
= 500 ohm, < 5C0pF load
Overshoot: < 10% of peak amplitude with = 500
ohm, < 500 pF load :
Table 1-2 Supplemental Information
RAIN SIGNAL GUTPUT
50 {2 impedance
BNC Connector, switchable to front or rear panel (not
switchable with Option 002}
May be floated a maximum of = 42 V peak (ac + del
from chassis (earth) ground
Ampiltude Ranges:
All AC Functions {with no de offset):
Range | Attenuation Amplitude
No. Factor [Peak-to-Peak}
1 1 10.00 Y to 3.000 V
2 3 2.999 V to 1.000 V
3 10 999.9 mV to 300.0 mV
4 30 - 299.9 mV to 100.0 mV
5 100 39.99 mV to 30.00 mV
‚6 300 29.89 mV to 10.00 mV
7 1000 9,299 mV to 3.000 mV
8 3000 2.989 mV to 1.000 mV
DC Offset Only:
Range | Attenuation Amplitude
No. Factor (Peak-to-Peak]
1 1 5.000 V to 1.500 V
2 3 1.499 V to 500.0 mV
3 10 499.9 mV to 150.0 mV
4 30 149.9 mV to 50.00 mV
5 100 48.99 mV to 15.00 mV
6 300 14.89 mV to 5.000 mV
7 1000 4.899 mV to 1.500 mV
8 3000 1,499 mV to 1.000 mV
Ge
neral Information
Model 3325A
Table 1-2. Supplemental Information (Contd).
AC Function with DC Offset:
Range | Attenuation AC Function Maximum DC Min, DC
No. Factor . Amplitude (p-p} (+ or —) {+ or —}
1 1 9.998 V to 1.000 Y 1.000 mV to 4.500 V 1.000 mV
2 . 3 999.9 mV to 333.4 mV 1,186 Y to 1.499 Y 0.100 mV
3 10 333.3 mV to 100.0 mV 333.3 mV to 450.0 mV 0.100 mV
4 30 99.99 mV to 33.34 mV 116.6 mV to 148.8 mV 0.010 mv
5 100 33.33 mV to 10.00 mV 33.33 mV to 45.00 mV 0.010 mv
6 300 9.999 т\ 10 3.334 mV 11.88 mV to 14.99 mY 0.001 mV
7 1000 3.333 mV to 1.000 mV 3.333 mV to 4.800 mV 0.001 mV
High Voltage Qutput Option 002:
Amplitude and Ranges: 4 times the standard instru-
ment amplitudes
Qutput Impedance: <2 Q at DC to < 10 Q at 1 MHz
Square Wave Settling Time: <1 ps to settle to within
05% of final value for frequencies of 10 Hz to 500 kHz,
tested at full output with no load
FREQUENCY SWEEP
Sweep Time:
Linear Sweep: 0.01 second to 89.99 seconds {single
of continuous)
Log Sweep:
Single Sweep: 2 seconds to 99,99 seconds
Continuous Sweep: 0.1 second to 99.99 seconds
Maximum Sweep Width: 1 Hz to maximum frequency of
the function selected
Minimurn Sweep Width {Linear}:
Minimum Sweep Width
| Sweep Time | Sweep Time
Function 0.01 second 39.99 seconds
Sine 0.1 mz 399.9 miz
Square 0.085 mHz 499.5 mHz
Triangle 0.005 mHz _ 49.95 mHz
Ramps 0.01 mHz 39.39 mhz
Minimum Sweep Width (Log): 1 decade
Phase Continuity: Sweep is phase continuous over the
full frequency range
WARMUP TIME
Standard instrument: 20 minutes to within specified ac-
curacy
Option 001 High Stability Frequency Reference:
Reference will be within £1 X 107 of final value 15
minutes after turn-on at 25°C for an off time of less
than 24 hours
AUXILIARY INPUTS (May be ficatad a maximum of +47 Y peak jac + del
from chassis ienrth] ground)
Reference: For phase-locking the 3325A to an external
frequency reference of 10 MHz or a subharmonic of
10 MHz down to 1 MHz. Level must be O dBm to
+20 dBm into 50 ohms, Rear panel BNC connector.
Amplitude Modulation Input {Sine Function Only):
Modulation depth at full output for each range:
0 to 100%
Modulation frequency range: DC to 500 kHz (0 to
21 MHz carrier frequency)
Sensitivity: 5 V peak for 100% modulation
input impedance: 10 kQ
Connector: Rear panel BNC
Phase Modulation:
Modulation Frequency Range: DC to 5 kHz
Modulation Depth
Function Depth (+ or -}
Sine 850°
Square 428°
Triangie 42.5%
Ramps 85°
Input Impedance: 20 kil
Connector: Rear panei BNC
AUXILIARY OUTPUTS (May be floated:a maximum of £42 V peek fac + del
from chassis [earth] ground)
Auxiliary Frequency Output lac coupied output):
Frequency Range: 21 MHz to 60.999 999 999 MHz,
with underrange coverage to 19.000 000 001 MHz
Ampiitude; O dBm
Qutput Impedance: 50 ohms
Connector: Rear panet BNC
1 MHz Reference Output (for phase- tacking other in-
struments to 3325Ak
Amplitude: 0 dBm
Output impedance: 50 ohms
Connector: Rear panel BNC
Marker Output {Linear sweep only}:
Levels: High to Low TTL compatible voltage transition
at selected marker frequency, sweep up only.
Connector: Rear panel BNC
В
1-4
LU AD 116 Ww
iw
E
Wow Ww EN Ww de Wow u
ET UN
Model 3325A
General Information
Table 1-2. Supplemental Information (Cont'd).
X Drive Cutput {Sweep up only):
sweep frequency
Connector: Rear panel BNC
Z Biank Output: ;
Leveis (TTL compatible voltage levels):
Linear Sweep:
Single: Low at start of sweep, High at stop. Re-
mains High until start of next sweep.
Continuous: Low during sweep up, High during
sweep down.
Log Sweep:
Single: Low at start of sweep, High at stop. Re-
mains High until start of next sweep.
Continuous: Low during sweep. Goes High
momentarily at stop frequency.
10 Mtz Oven Reference Output, Option 001, for phase
locking the 3325A to the optional high stability frequency
reference:
Amplitude: O dBm, 50 ohms
Connector: Rear panel BNC. Must be connected to
the rear panel EXT REF IN connector.
REMOTE CONTROL
Hewlett-Packard interface Bus {MP-IB} Control: (HP-IB is
Hewlett-Packard Company's implementation of {EEE Stan-
dard 488-1978}. Time shown is in addition to programming
time.
Amplitude: O to + 10 V linear ramp proportional to
*Times shown are in addition to programming time
GENERAL
Frequency Switching and Settling Time: ™
< 10 ms to within 1 Hz of final value for 100 kHz span
< 25 ms to within 1 Hz of final value for 1 MHz span
< 70 ms to within 1 Hz of final value for 20 MHz span
Phase Switching and Settling Time:*
< 15 ms to within 90° of phase lock For 20 MHz fre-
quency change
Amplitude Switching Time.”
< 30 ms to within amplitude specifications
Operating Environment:
Temperature: 0° to 55°C
Relative Humidity: < 95%, 0° to 40°C
Altitude: = 15,000 ft.
Storage Temperature: — 50° to + 75°C
Storage Altitude: = 50,000 ft.
Power Requirements:
100/120/220/240V + 5%, — 10%,48 to 66 Hz
80 VA, 100 VA with all options, 10 VA standby
Dimensions in millimeters and {inches}:
132.6 (5%) high x 425.5 (16%) wide x 497,8
(19-5/8) deep
Weight in kilograms and {ibs}:
Net weight: 9{20)
Shipping Weight: 14.5 (32)
The following accessory options are also available for
the Model 3325A:
Option 907 Front Handle Assembly
Option 908 Rack Mount Flange Kit
Option 909 Rack Mount Flange Kit/Front
Handle Assembiy
Option 910 Additional Operating and Service
Manual
1-17. ACCESSORIES SUPPLIED,
1-18. A special connector is supplied with the High
Stability Frequency Reference Option 001 for connect-
a ‘ing the rear panel Reference Output to the Reference In-
- put, This connector is Part No, 1250-1499.
1.19. ACCESSORIES AVAILABLE.
1-20. The following accessories are available for use
with the Model 3325A:
Number Description
11048C 50 ohm Feedthru Termination
11356A Ground Isolator
Oven Board Assy. (Converts 3325A to
Option 001)
High Voltage Option (Converts 3325A
to Option 002)
03325-80001
03325-80002
5061-0077 Rack Mount Flange Kit (Option 908).
5061-0083 Rack Mount Flange/Front Handle Kit
(Option 909)
5061-0089 Front Handie
Kit (Option 907)
1-5
General Information
1-21. INSTRUMENT AND MANUAL IDENTIFICATION.
1-22. The instrument serial number is located on the
rear panel. Hewlett-Packard uses a two-section serial
number consisting of a four-digit prefix and a five-digit
suffix. A letter between the prefix and suffix identifies
the country in which the instrument was manufactured
(A= USA, G-= West Germany, J= Japan, U= United
Kingdom). All correspondence with Hewlett-Packard
concerning this instrument should include the complete
serial number.
1-23. The serial number prefix is the same for all iden-
tical instruments and changes only when a change is
made to the instrument. The suffix is assigned sequen-
tially and is different for each instrument. If the serial
number of your instrument is lower than the serial
number on the title page of this manual, refer to Section
VII, MANUAL CHANGES, for the information that
will adapt this manual to your instrument. This is
especially important if the serial prefix of your instru-
ment is different than the one shown on the title page of
this manual. An instrument manufactured after the
printing of this manual may differ in some respect from
the information in this manual. In this case, a yellow
Manual Changes supplement included with the manual
explains how to adapt the manual to your instrument.
1-24, SAFETY CONSIDERATIONS,
1-25. To ensure safe operation and to retain the instru-
ment in a safe condition, this Operating and Service
Manual contains information, cautions and warnings
: which must be adhered to by the user or service person-
nel.
1-6
Model 3325A
Table 1-3. HP-IB Interface Capability.
Code Function
SH1 Source handshake capability
AH‘ Acceptor handshake capability
T6 Basic tatker; Serial poll; Unaddressed to talk
if addressed to listen
L3 Basic listener; Listen onty; Unaddressed to
listen if addressed to talk
SR1 Service Request capability
RL1 - Remote/l.ocal capability
PRO Ne paraltel poil capability
DC1 — Device Clear capability-
DTS No device trigger capability
co No controller capability
£1 Open collector bus drivers
1-26. The symbol /N appearing on the front or rear
panel of the 3325A is an international symbol meaning
“refer to the Operating and Service Manual”. The sym-
bol identifies important instructions required to prevent
damage to the instrument. To ensure the safety of the
operating and maintenance personnel and retain the
safe operating condition of the instrument, these in-
structions must be adhered to.
1-27. RECOMMENDED TEST EQUIPMENT.
1-28. Equipment required to maintain the Model 3325A
is listed in Table 1-5. Otber equipment can be
substituted if it meets or exceeds the critical specifica- -
tions listed in the table.
J
("Е
rm
E
i
34,
ia
la:
AM
le 40
1
=
cee?
SNA
© o
Model 3325A
Table 1-4, HP-IB Response Times.
General Information
Input Data Device Output Data
Function Mnemonic Transfer Time Time Transfer Time
Function {Waveform} FU 450-500 us 1600 ms 450-500 us
1 Digit 225-250 us 2.8 ms - 225-250 us
Frequency FR 450-500 us 7.0 ms 450-500 us
< 11 Digits + Decimal 225-250 us each | 2.8 ms each 225-250 us each
Delimiters HZ, KH, or MH 450-500 us 12.5 ms 450-500 ps
Amplitude AM 450-500 us 5.8 ms 450-500 us
< 4 Digits + Decimal 225-250 us each 2.8 ms each 225-250 us each
Delimiters VO or MV 450-500 us 90 ms 450-500 us
VR or MR 450-500 ps 130 ms 450-500 us
DB 450-500 us 250 ms 450-500 us
DC Offset OF 450-500 us 6.8 ms 450-500 us
<4 Digits + Decimal 225-250 ps each | 2.8 ms each 225-250 us each
Delimiters VO or MV 450-500 us 82 ms 450-500 us
Phase PH 450-500 us 5 ms 450-500 us
=< 4 Digits + Decimat 225-250 us each 2.8 ms each 225-250 us each
Delimiter DE. 450-500 ns 28 ms 450-500 ps
Sweep Start Frequency ST 480-500 us 7.0 ms 450-500 us
< 11 Digits + Decimal 225-250 ps each 2.8 ms each 225-250 us each
Delimiters HZ, KH, or MH 450-500 us 10.3 ms 450-500 us
Sweep Stop Frequency SP 450-500 us 7.0 ms 450-500 us
=11 Digits + Decimal 225-250 us sach 2.8 ms each 225-250 us each
Delimiters — HZ, KH or MH 450-500 us 10,3 ms - 450-500 us
Sweep Marker Frequency МЕ 450-500 us 7.0 ms 450-500 us
<= 11 Digits + Decimal 225-250 us each 2.8 ms each 225-250 us each
Delimiters HZ, KM or MH 450-500 us 10.3 ms 450-500 us
Sweep Time. T4 450-500 us 5.5 ms 450-500 us
<4 Digits + Decimal 225-250 us each 2.8 ms each 225-250 us each
Delimiter SE 450-500 us 7.0 ms 450-500 us
Store SR — 450-500 us 11 ms
Recall RE 450-500 us 1700 ms
Assign Zero Phase AP 450-500 us 5.2 ms
Amptd Cal AC 450-500 us. 1500 ms
Start Single Sweep 55 450-500 us 300 ms
Start Continuous Sweep se 450-500 us 300 ms
interrogate | 225-250 us 3 ms
{Add Parameter
Mnemonic Time)
Mask Service Request MS 450-500 us 4.5 ms
High Voltage Output HY 450-500 us 48 ms
Rear/Front Cutput RF 450-500 us 44.5 ms
Self Test TE 450-500 us 10,000 ms
Sweep Mode SM 450-500 us 4.5 ms
Data Transfer Mode MD 450-500 us 4.5 ms
interrogate Function FU 675-750 us 1803 ms
interrogate Error [ER 675-750 us 11,5 ms
Universal Commands — 225 us per byte
Amplitude Modulation MA 450-500 us 7.0 ms
Phase Modulation MP 450-500 us 7.0 ms
1-7
General Information
— Tabie 1-5. Recommended Test Equipment.
Model 3325A
Required For
a
(per. perf. | Adjust Trouhie-
instrument Critical Specifications Ver. Tests | ments shooting Recommended Model
Oscifloscope Vertical X X X X -hp- 1 740A
: Bandwidth: do to 100 MHz 1
Deflection: 0.01 V to 10V/div
Horizontal
Sweep: 0.056 us to 1 s/div
x 10 Magnification
Delayed Sweep
Electronic Counter Frequency Measurement X X ‚X ‚np- 5328A with Opt 01
Frequency Range: to 20 MHz and 040 or 041
Resolution: 8 digits
Accuracy: £ 2 counts
Time interval Average A te B
Resolution: 0.1 ns
Digital Voltmeter DC Function X x -hp- 3466A
Ranges: .1 V, 1 V, 10 У,
100 Y
Accuracy: + .2%
Resolution: 4% digits
AC Function
Ranges: 1 V, 10 V, 100 V
Accuracy: +.5%
Resolution: 4 digits
DC Function | X X X -hp- 3455A
Ranges: .1 V, 1 V, 10 V,
100 V -
Accuracy: + 05%
Resolution: 6 digits
AC Function: True RMS
Ranges: 1 V, 10V, 100 V
Accuracy: 4.2%
Resolution: 6 digits
Crest Factor: 4:1 |
50-ohm Load Accuracy: +.2% X X X X -hp- 11048C
Power Rating: 1 W
High Frequency Frequency Range: 1 kHz to X X X -hp- 141T/85528/0053B/.1-
Spectrum Analyzer 100 MHz | S566A/B5608A
Amplitude Accuracy: +.5 df
Low Frequency Frequency Range: X X X -hp- 3580A/3585A
Spectrum Analyzer 20Hz-50kHz a
Amplitude Accuracy: +.5 di
Spurious Responses:
80 dB below reference
Sine Wave Signal Source . | Frequency: 1 kHz X -hp- 204C
Amplitude: 1 Y rams into 20 KA
Frequency Range: X -hp- 3335A 1 MHz-20
Miz
Amplitude Range: to
+ 7.0 dBm:
Gutput impedance: 50 @
Phase Noise (Integrated):
9,9 MHz; < — 63 «В
20 MHz: < - 70 dB
Spurious: > 75 dB below
fundamental
Double Balanced Mixer impedance: 500 A р TOB34A
Frequency: to 20 MHz or 10514A
1 MHz Low Pass Filter Cut-off Frequency: 1 MHz x. £882 1MHz Low Pass.
| Stopband av Filter, Impedance 500,
y ¢ | C Shape Factor, Metal Can, |
Stopband Freq: 4 MHz-80 MHz BNC's Allen Avionies, Inc.
274 E. Second St. Mineoia,
NY 11501 !
15 kHz Noise Equivalent Consisting of: X
Filter Resistor: 10k + 1% -hp- 0757-0340
Capacitor: 1600 pF +5% -hp- 0160-2223
1-8
A
a
Fo
— REA cu
LE 7
Em]
Las
LA ta) Lai Lag d
КИ Pai
Eg) Wg) LED $B) ES LS) imi ww
ig inl
38) 18 1
=
Model 3325A
Table 1-5. Recommended Test Equipment (Cont'd).
General Information
Required For
Oper. Perf. | Adjust Trouble
instrument Critical Specifications Ver. Tests | ments shooting Recommended Model
AC Voltmeter Ranges: 0.1 V to 1 V X -np- 400 FL.
Freguency Range:20 Hz-1 MHz
Input impedance: = 1 MQ
Meter: Log scale
Acc {100 Hz to 10 kHz): + 1%
Resistor 1k +5% X -hp- 0683-1025
OsciHoscope Probe Division Ratio: 10 to 1 X X -hp- 10G41A
Impedance: 1 MO, 12 pF |
DC Power Supply Voits: 0-10 V X X -hp- 6214A
Amps: 10 mA
Floating output
Frequency Standard Frequency: 5 MHz X -hp- 1058
{Required for Option Accuracy: 1 x 10°
QC1 Only)
Calculator HP-IB Control Capability X X -hp- 9825A with
(Required for 98034A Interface,
automatic testing} General 1/0 ROM,
Extended 1/0 ROM
System Voltmeter DC Voltage: 0 to + 10 V X -hp- 3437 A
Sampie/Hold Measurement
External Trigger: Low True TTL
Edge Trigger
Trigger Delay: selectable, 10 xs
to 140 us
BNC Tee Male-femate-femaie X X X -hp- 1250-0781
Adapter BNC-to-dual banana plug X X Xx -hp- 1250-2277
BNC-to- Triax Adapter Female BNC-to-Maie Triax X -hp- 1250-0595
Signature Analyzer Signature: 4-digit hexadecimai X -hp- 5004A
Characters:Othru 9,A,C,F.H,P.U
Threshold ——
Logic 1: + 2.2 V
Logic O: + 0.5 V
Clock Frequency: = 1.5 MHz
Pulse Generator — Pulse Rate: 500 kHz X -hp- 331 ZA
Pulse Width: <1 us
DC Offset: 1 V
Resistor 56.20 1% 1/8W X X -hp- 0757-0395
Thermal Converter Input Impedance: 75 Q X X -hp- 1105CA
input Voitage: 0.5 V rms
Frequency: 2 kHz to 20 Mhz
“Frequency Response: + 0.05 dB
2 kHz to 20 MHz
Resistive Divider Consisting of: | X
; Resistor: 36,5 2 1% % W -np- 0757-0996
Resistor: 13,70 1% % W “hp- 0698-4998 .
Resistive Divider Consisting of: X
Resistor: 40,20 1% %# W -np- 0698-5027
Resistor: 10 £ 1% k W -hp- 0757-0984
Resistive Divider Consisting of: X
Resistor: 300 1% Y W -hp- 0698-7533
Resistor: 20 2 1% % W -hp- 0698-5296
Resistive Divider Consisting of: X
Resistor: 100 kl 1% 1/8 W -hp- 0757-0465
Resistor: 162 k? 1% 1/8 W -hp- 0757-0470
Termination 50 ohm Feedthrough 1% X -hp- 11048C
Thermai Converter BNC Connectors X -hp- 1105GA
1-9/1-10
La
3
a)
3
E
a TABLE OF CONTENTS
= Paragraph : Page
2-1. Introduction ........... 2.200.000 eee Canedo so aredarer recen. 2-1
= 2-3. Initial Inspection ....122020 0004 44e 4e A ea 4 ee A ee ee Ra a ee es 0e 2-1
- 2-5. Preparation For Use ii ee 2
= 26. Power Requirements ............ iria arre reas 2-1
а 2-8. Line Voltage Selection. oii ii er reece ну: 2-1
- 2-10. Power Cable .. 112424144414 a ea a ae a en a a se 6 RR RR KR RK KG 2-1
= 2-12. HP-IB Connections ......... RAA AA area 2-1
I 2-15. 3325A Listen/Talk Address .. oon eee cic AD Less 2-2
im 2-17. HP-IB Description ............ 220000. eeacare area. E 2-3
2-19. Connecting Oven Option 001....... i i 4 00e 2-3
= 2-21. Operating EnvVIFONMENT. . «Loot eee ci 2-3
— 2-23. Cooling System........ A 2-3
pe 2-26. Bench Operation oo. ii ee ee PIPE 2-3
2-28. Rack Mounting........._eeeeerorrea e an eciarend Ienro LL 144140 2-3
= | 2-30. Storage and Shipment .......0042101002 sc ae aa a es scene Lada a ae ae 2-3.
wm 2-31. ENVITONMIMETIE © oo tit tte et eee eet ee a 2-3
вы © 2-33. Instrument Identification «or eee KK 2-5
=) 2-33. Packaging Cea EE 2-5
¿al LIST OF ILLUSTRATIONS LIST OF TABLES
_. Figure — | Page Table
2-1. Power Cables .............. on. 2-2 2-1. НР-1В Addresses ............. cc...
a 2-2. HP-IB Connector. ............. aaa 2-2 |
| 2-3, Rack Mount and Handle Kits ...... ZO
=
sd
#
Wu
E E Ww
Ww Ww ow ul
AM LU LA
RY
ET AN
18 AN
Model 3325A
Installation
SECTION II.
INSTALLATION
2-1. INTRODUCTION.
2-2. This section contains instructions for installing and
interfacing the Model 3325A Synthesizer/ Function
Generator. Included are initial inspection procedures,
power and grounding requirements, line voltage
selection, environmental requirements, installation
instructions, HP-—IB connection procedure, and
instructions for repackaging for shipment.
2-3. INITIAL INSPECTION.
2:4, Inspect the shipping container for damage. If the
shipping container or cushioning material is damaged, it
should be kept until the contents of the shipment have
been checked for completeness and the instrument has
been checked mechanically and electrically, This.
instrument was carefully inspected both mechanically
and electrically before shipment. It should be free of mars
and scratches and in perfect electrical order upon receipt.
Procedures for checking electrical performance are given
mm Section IV. If there is mechanical damage or defect or
if the instrument does not pass the electrical performance
test, notify the. nearest Hewlett-Packard Sales and
Service Office listed at the rear of this manual. If the
shipping container is damaged or the cushioning material
shows signs of stress, notify the carrier as well as the.
Hewlett-Packard office. Keep the shipping material for
the carriers inspection, The warranty statement is
located in the front of this manual.
2-5. PREPARATION FOR USE.
2-6. Power Requirements.
2-7. The Model 3325A requires a power source of 100,
120, 220, or 240 V ac, +5%, -10%, 48 to 66 Hz single phase.
Power consumption is 100 VA maximum.
2-8. Line Voltage Selection.
Before connecting ac power to this
instrument, make sure it is set to the line
voltage of the power source. Also ensure that
the common connection of the power outlet is
connected 10 a protective earth contact.
2-9. The line voitage selection switches are set at the
factory to correspond to the line voltage option ordered,
This information may be found on the rear panel.
Option Line Voltage Selected
100 100vV —
120 120 Y.
220 | 220 Y
240 240 Y
WARNING $
The line voltage selection switches are located
inside the top cover of the instrument. Line.
voltage selection should be done by trained
service personnel! only.
2-10. Power Cable.
2-1}. In accordance with international safety standards,
this Instrument is equipped with a three-wire cable. When
connected to an appropriate power line outlet, this cable
grounds the instrument cabinet. The type of power cable
shipped with each instrument depends on the country of
destination. Refer to Figure 2-1 for the connector con-
figuration and -hp- part numbers of the available power
cables.
2-12. HP—IB Connections.
2-13. Interconnection data concerning the rear panel
HP-IB connector is provided in Figure 2-2. This connec-
tor is compatible with the -hp- 10631 (A, B, or C) HP-IB .
cables. The lengths of these cables are as follows:
10631A° I meter
106318 2 meters -
1063 1C 4 meters
Installation
8170-1388 B120--1869
570-8-4195
"UL LISTED POR USE iN THE UNITED STATES OF AMÉRICA
Figure 2-1. Power Cables,
Up to 15 instruments (including the controller) may be
connected in an HP—IB system. The HP—IB cables
have identical stacking connectors on both ends so that
several cables can be connected to a single source, As a
practical matter, avoid stacking more than three or four
cables on any one connector, If the stack gets too large,
the force on the stack can produce enough leverage to
damage the connector mounting. Be sure that the
connector screws are tightened firmly in place to keep it
from working loose during use, and be sure to observe the
Model 3325A
CAUTION of Figure 2-2.
2-14. Cable Length Restrictions. System components `
can be interconnected in virtually any configuration.
However, to achieve reliable system performance, proper
voltage levels and timing relationships must be
maintained. If the system cable is too long, the lines
cannot be driven properly and the system will fail to
perform. The maximum length of cable that can be used
to connect a group of instruments must not exceed 2
meters (6.5 ft.) times the number of instruments to be
connected, or 20 meters (65.6 ft.), whichever is less.
2-15. 3325A Listen /Taik Address.
2-16. The 3325A is normally shipped from the factory
with the listen address set to ASCII character 1; talk ad-
dress Q. The 3325A address switches are. located inside
the top cover near the center of the instrument. The pos-
sible HP-IB addresses are shown in Table 2-1. The five
switches (marked 1 through 5) are set according to the
ASCII code address chosen. The 3325A may be set to
a “listen only” condition by having the switch marked:
LON set to the “17 position.
ha
À o
X «+
I
PIN LINE
1 DIST
2 2102
3 DIOS
À DiD4
13 : DIOS
14 | DIOG
15 D107
16 DIOS
6 EO
17 REN
6 DAV
7 NRED
8 NDAC
9 IFC
10 | SRG.
11 ATN
12 SHIELO—CHASSIS GROUND
18 P/O TWISTED PAIR WITH PING
19 PIO TWISTED PAIR WITH PIN 7
20 P/O TWISTED PAIR WITH PIN 8 THESE SIS
21 | P/O TWISTED PAIR WITH PIN 9 INTERNALLY
22 P/O TWISTED PAIR WITH PIN 10 GROUNDED
23 P/O TWISTED PAIR WITH PIN 11
24 ISOLATED DIGITAL GROUND
The 3336A contains metric threaded HP-IB cable mounting
studs as opposed to English theads, Metric threaded -hp-
10831A, B, or C HP-IB cable lockscrews must be used to
secure the cable to the instrument. Identification of the two
types of mounting studs and lockscrews is made by their
color. English threaded fasteners are colored silver and
metric threaded fasteners are colored black, DO NOT mate.
silver and black fasteners to each other or the threads or
either or both will be destroyed. Metric threaded HP-1B
cable hardware illustrations and part numbers follow.
LOCKSCREW LONG MOUNTING STUD SHORT MOUNTING STUD
1390-0360 0380-0643 0580-0644
Figure 2-2. HP-iB Connector.
SE
WE
oor
Fed
|
po
EA
т
1
|
-
ft
da
la Li
Ta
Lal 18 e
15;
ER] 848 UU
18) ENS UN:
LR)
RI
KE A
LEN AH AT 18) AM
Model 3325A
| WARNING À
Because the address switches are located in-
side the instrument, they should be set by
trained service personnel only.
2-17. HP—IB Description.
2-18. À description of the HP-IB is provided in Section
IH of this manual. À study of this information is neces-
sary if you are not familiar with the HP-IB concept. Ad-
ditional information concerning the design criteria and
operation of the bus is available in IEEE Standard
488-1978 “IEEE Standard Digital Interface for Program-
mabie Instrumentation’.
2-19. Connecting Oven Option 001.
2-20. In order to use the Oven Option 001, an external
connection must be made between the rear panel 10 MHz
OVEN QUTPUT and the REF IN connectors. A special
connector for this purpose, -hp- Part No. 1250-1499, is
supplied with instruments having Option 001.
2-21. OPERATING ENVIRONMENT.
| WARNING :
To prevent potential electrical or fire hazard,
do not expose equipment to rain or moisture,
2-22. In order for the 3325A to meet the specifications
listed in Table 1-1, the operating environment must be
within the following limits:
‘Temperature 0 to +55°C
Relative Humidity 95% at 40°C
Altitude 4600 meters
(15,000 feet)
2-23. Cooling System.
2-24. The cooling fan intake and the exhaust vent are
located in the rear panel. When operating the instrument,
provide atleast 75 mm (3 inches) of clearance at the rear,
and at least 7 mm (% inch) on all sides of the instrument.
Failure to allow adequate air circulation will result in
excessive internal temperature, reducing instrument
reliability. |
2-25. It is imperative that the fan filter be inspected
frequently and cleaned or replaced as necessary to permit
the free flow of air through the instrument. To clean the
Installation
filter, remove the four nuts that secure the filter retainer.
Remove the filter and flush with soapy water, rinse clean,
and air dry.
2-26. Bench Operation.
2-27. The instrument has plastic feet attached to the bot-
tom panel. The front feet contain foldaway tilt stands
for convenience in bench operation. The tilt stand raises
the front of the instrument for easier viewing of the con-
trol panel. The plastic feet are shaped to make full width
modular mstruments self-align when they are stacked. A
front handle kit, -hp- part number 5061-0089 (Option
907), can be installed for ease of handling the instrument
on the bench (see Figure 2-3). The kit is shipped with the
instrument if Option 907 is also ordered. Otherwise, the
front handle kit is available separately by its -hp- part
number. |
2-28. Rack Mounting.
2-29, The 3325A can be rack mounted in a rack having
an EIA standard width of 482.6 mm (19 inches). The
instrument can be rack mounted with or without a handle
kit by use of the following items:
a. Rack mounting without handles; use Rack Mount
Flange Kit -hp- Part No. 5061-0077 (Option 908).
b. Rack mounting with handles; use the combination.
Rack Mount Flange/ Front Handle Kit -hp- Part No.
5061-0083 (Option 909).
NOTE
The Rack Mount Flange Kit of item a will
not provide the space requirement for rack
mounting when used with the bench handle
assembly (-hp- part number 5060-9899, Ор-
tion 907). To rack mount with handles, the
combination Kit of item b, (Option 909) must
be used (see Figure 2-3). If either Option 908
or 909 is ordered, the corresponding kit is
shipped with the instrument. Otherwise, both
Kits are available separately by their -hp- part
numbers.
2-30. STORAGE AND SHIPMENT.
2-31. Environment.
2-32. The instrument should be stored in a clean, dry
environment. The following environmental limitations
apply to both storage and shipment:
Temperature -40° С to +75°C
Relative Humidity 95% at 40° C
15,300 meters
Altitude
| (50,000 feet)
2-3
Installation
Table 2-1. HP..-IB Addresses.
Model 3325A
Factory
Selected — 3
Address
ASCI Characters
Listen
Address
Talk
Address
Address
Switches
{Binary Code)
5 4 3 2 1
Equivalent Codes |
{To 5-Bit Binary Switches)
Octal
Decimai : Mexadecimai
SP
-- 9 со ~ с) сп WR = “-
VILA
О во ат ож’ о IE О топе сю >
то< соя оо поро
as LOA NL O
dd da в ой ой
00060000
066600060
Am ODO
a E OMA JE
a OD = © = © — ©
600660000
AAA AA
220000
с нон
= О — © = © = ©
006060600000
A AA OOO
IQ = © ©
= © = © — © = ©
nano
2.0000
— © © OO
о = © = © = ©
00
OT
02
03
04
0b
06
07
10
11
12
13
14
15
16
17
30
31
32
33
34
35
36
09
O
02
- 03
04
OB
06
07
08
09
10
11
12
13
14
15
16
17
18
19.
20
21
22
23
24
25
26
27
28
28
30
00
Qi
02
03
04
05
05
07
08
09
ОА
08
ос
0D
OE
OF
10
17
12
13
14
15
16
A7
18
19
ТА
iB
ic
10
IE
NOTE: The Equivalent Codes shown correspond only to the 5-bit binary switch
code. These bits are the same for both listen and talk addresses, and the sixth
and seventh bits determine whether the address is listen (01) or talk {10} Some
controllers distinguish between listen and talk automatically, requiring oniythe
— © U > UA
Address Switches
B-bit code equivalent to designate a device,
LON — Listen Only -
ROM — ROM Disable (For Test Oniy}
2-4
E ee,
ny +
i i
. ”. >
и
° th
A
га
A
| В i
ce
Ania
as
LL
ii
ul AÑ 138
LE
E
N
Е
Model 3325A
[os asic TRIM
HANDLE KIT, BENCH OPERATION
OPTION 908 _
RACK MOUNT FLANGE/FRONT HANDLE KIT
Figure 2-3. Rack Mount and Handle Kits.
Installation
2-33, Instrument Identification.
2-34. If the instrument 1s being returned to Hewiett-
Packard for servicing, attach a tag indicating the type of
service required, return address, model number, and full
serial number. In any correspondence, refer to the
instrument by model number and full serial number.
2-35. Packaging.
2-36. Original Packaging. If the original packaging has
been retained, pack the instrument in the same manner as
it was received. Be sure to seal the shipping container:
securely. Also, mark the container FR AGILE to assure
careful handling.
2-37. Other Packaging. The following general
instructions should be used for repackaging with.
commercially available materials.
a. Wrap the instrument in heavy paper or plastic. (If
shipping to a Hewelett-Packard office or service center,
attach a tag indicating the type of service required, return -
address, model number, and full serial number.)
b. Use a strong shipping container. A doublewall
carton made of 250-pound test material is adequate,
c. Use enough shock-absorbing material (3-to-4 inch
layer) around ail sides of the instrument to provide firm
cushion and prevent movement inside the container.
Protect the control panel with cardboard.
d. Seal the shipping container securely.
e. Mark the shipping container FRAGILE to assure
careful handling. |
2-5/2-6
Е Cali
Lal;
La: la las a)
i
us uw
La.
Li
s м dv
a
4 LY
TABLE OF CONTENTS
Paragraph Page
3-1. Introduction + vv vee toot ee eae eee ae re eee eee ee ee ea te 3-1
3-3, Panel Features ........e-re0vrrecreneareeeere ETE near cc 6 3-3
3-5. Power/Warm-Up ............ PEP 3-3
3-8, Initial Conditions ....0...000000004000 VEN Nana 3-3
3-10. Self Test. .....0.0000000 0000 HH EE PO 3-3
3.12. Front/Rear Signal Output .....0000000 eee ee rare ect eee 3-3
3-14. Sync Output «coterie teeta snares et 3-3
3-16. External Reference Input ........24000 000 eee ana eee canette о 3-4
3-18. 10MHZz Oven Option 001 ........... aa aanereriecronerr racer ree. 3-4
3-20. Manual Programming ........._._erreeveereerrcererrereterere NET 3-4
3-22. Clear Display ....0.00.0000000 000 rer ee eee etats ee tt 3-4
3-24. Entry Errors 12004000 0a eee eee eee eee ae ee eee tete et 3-4
3-26. Function Selection ......202204 4240 ss aa ae ea ses ee ea ee re ee re 3-4
3-28. Frequency BOTY. o.oo evan ernie eae 3-4
3-30. Frequency Limits ........0000 00040 e ea eee see ae tete eee 3-4
3-32. Frequency Display and Resolution ........4440 1e a caca eee tentera 3-5
3-34, —. Auxiliary Output (Sine Function Only) . PEN 3-5
3-36. Amplitude Entry .........eee_.e—_. LR ee a nee» a 3-5
3-39, Amplitude Calibration .........._eexereeresrarr ener rererereerer e 3-5
3-41, High Voltage Output Option 002 ................ ee .3-6
3-43, DC Offset oie eee 3-6
3-46, Phase EntrY.....0000000000 00H HA о a cee 3-7
3-49, Frequency Sweep ........ aaa arenero. SUPP 3-7
3-55. Sweep Marker ..........eeeeereeecio. Lane Lisa anne nadia 3-9
3-58. Sweep X Drive Output .........2000 0000 e ea nées eee nent e ee ee et 3-16
3-60. Sweep Z Blank Output ooo 3-10
3-62. Amplitude Modulation .......... oon ee 3-10
3-66. Phase Modulation ........... NO PDI ee» LL 3-11
3-68. Modify Keys .......20002 040 eee se sea ee eee eee este 3-11
3-70. Store and Recall... o.oo 6 eae 1.443411
3.72. Operator's Checks iii ANT DU a 46 3-11
3-74. Self Test... PR PP ...3-11
3-76. Output Checks ......00.000000000 0 ea eee ee ae etre tee 3-11
3.78. Operator’s Maintenance ........0000010 001100 Вени:
3-81. HP-IB Operation ........e....000 eee [ER „3-12
3-83. General HP-IB Description ..... LL AAA a a a ne 00 3-13
3-88. Definition of HP-IB Terms and Concepts ...... verano 3-13
3-89, Basic Device Communication CapabllitY. ......00001000 rer N 3-14
3-91. Message DefinitionS .......00.000000- 0 e nes ener. 3-14.
3.93. 3325A Response to Messages. .........eerreeevevrrarerr ET see 3-14
3-95, HP-IB Work Sheet .......... rior endearecrdnecrecerrerore re. 3-14
3-97.
HP-IB Addressing .....1000000 04 eee a eee eee ea es ENEE 3-14
3-100. 3325A Remote Programming. ..... ea 3-14 л
2101 3325A HP-IB Capabilities .................000000000 0000 3-14 /
3-103. Developing an HP-IB Program. ..........c ovine 0043-15
3.107. Universal and Addressed CommandS .......00.0000000010 000 eee esse eee 3-17 О
3-109. Placing the 3325A in Remote ........00000 0 caen ass ae ane ea aan eee 3-17
3.111. The 3325A Address ...........eeee.0rererereeeier er RRA 3-17 N
3-113. 3325A Data Message FOrmats .. o.oo ini e 3-17
3-115. Data Transfer Mode «o.oo eae 3-20
3-118. Programming Data Transfer Mode ....... iii ses ace 3-21
3-120. Programming Entry Parameters ........re.-.r<eeeroe— eee 3-21
3-122. Programming Waveform Function .......... J ee 3-21 -
3-124. Programming Binary (On or Off) Functions... оо 3-22 ‘
3-126. Programming Selection Functions...........244 100 ee eee see seen 3-22
3-128. Programming Execution Functions. .........e.-reeerveveo SN 3-22.
3-130. Programming Amplitude Units Conversion ...........eeveeereoerrs 3-23 т
3.132. Programming Storage Registers. ........ cocoon arena 3-23 -
3-134. Service Requests .............=ee... EEE 3-23
3-136. — Serial Poll ......... eee 3-23
3-138. Status Byte ....... aadderedoanrenrererererereererereeoreerecm 3-24
3-140, Busy Flag. ............... eee PES 3-24
3-142. Sweep Flag ......... eee a 006 LL La a aa a ea ee ee 3-24 .
3-144. Masking or Enabling Service Requests ............. eres SUR 3-24 -
3.146. Interrogating Program Errors ...... RE aaa. 3-24 =
1-148. Interrogating Entry Parameters... ee 3-25
3-150, Interrogating Function (Waveform) ....... o.oo KT 3-25 р
3.152. Interrogating Miscellaneous Parameters. ........... eee 3-26
3-154. Using the Interrogate Capability ...........—.....- eee ..3-26
3-156. 3325A Programming Procedure .........eee.reeeveerererrerertr о 3-27 E
Appendix A. Meta Messages Block Diagrammed ............... La 400 A-1
Appendix B. Programming the Model 3325A with............ LL Lane B-1
the 9825A Calculator |
LIST OF ILLUSTRATIONS | LIST OF TABLES
Figure Page Table Page
3-1. Front and Rear Panel Controls ......... 3-2 3-1. Operating Information ............... 3-1
3-2. Maximum DC Offset : 3-2. Amplitude Limits of AC Functions ....3-5
— With AC Functions «o.oo ovens 3-8 3-3, High Voltage Output Amplitudes
3-3, Interface Connections | (Option 002) ....00000000000 0 3-6
and Bus Structure ....... aaa 33 3-4. Maximum DC Offset |
_ | | with any AC Function... .............. 3-7
3.5. General Interface Management Lines ..3-14
3-6. Definition of Meta Messages ......... 3-15
3.7. 3325A Implementation of Messages ...3-16
3.8. Interface Functions ................. 3-16
3-9. Summary of 3325A
Programming (ASCID)...—...........3-18
-10. Programming Codes ...........re.... 3-19
3-11. SRQ Mask/Enable Data ............. 3-25
ta
“a
Las
3,
RON }
Lis
la WOW WW wl Wl
Ts
bo №
Mode! 3325 À
Opcration
SECTION II
OPERATION
3-1. INTRODUCTION.
3-2. This section of the manual contains instructions
for manual operation and HP-IB (Hewlett-Packard In-
terface Bus) programming. The HP-IB information in-
cludes the basic concents of the interface bus operation,
with which you may already be familiar. Use Table 3-1
to locate the information you need for your particular
situation.
Table 3-1. Operating information.
Paragraph Content Paragraph Content
3-3 PANEL FEATURES (Figure 1-1) 3-100 3325A REMOTE PROGRAMMING
3-5 POWER/WARMUP 3-101 3I25A HP-18 Capabilities
3-8 INITIAL CONDITIONS Table 3-8, Interface Functions
3-10 SELF TEST 3-103 Developing an HP-iB Program
3-12 FRONT/REAR SIGNAL OUTPUT 3-107 Liniversal and Addressed Commands
3-14 SYNC OUTPUT 3-108 Placing the 3325A in Remote
3-16 EXTERNAL REFERENCE INPUT 3-111 The 3325A Address a
3-18 10 MHz OVEN OPTION 001 Table 3-9, Summary of 3325A Programming,
3-20 MANUAL PROGRAMMING ASCH Characters
3-22 Clear Display Table 3-10, Programming Codes
3-24 Entry Errors 3-113 3325A Data Message Formats
3-26 Function Selection 3-115 Data Transfer Mode
3-28 Frequency Entry 3-118 Programming Data Transfer Mode
3-30 Frequency Limits 3-120 Programming Entry Parameters
3-32 Frequency Display and Resolution Frequency
3-34 Auxiliary Output (Sine Function Only} Amplitude
3-36 Amplitude Entry Offset
‘Table 3-2, Amplitude Limits of AC Functions Phase
3-38 Amplitude Calibration Sweep Start Frequency
3-41 High Voltage Output Option 002 Sweep Stop Frequency
| Table 3-3, High Voltage Output Amplitudes Sweep Marker frequency
3-43 DC Offset Sweep Time
Table 3-4 and Figure 3-2, Maximum DC 3-122 Programming Waveform Function
Offset 3-124 Programming Binary (ON or OFF) Function
3-46 Phase Entry High Voltage Output {Option 002)
3-43 Frequency Sweep Amplitude Modulation
3-55 Sweep Marker Phase Modulation
3-58 Sweep X Drive Output 3-126 Programming Selection Functions
3-50 Sweep Z Blank Output Rear Qutput/Front Output
3-52 Amplitude Modutation Linear Sweep/Logarithmic Sweep
3-66 Phase Modulation Data Transfer Mode
3-68 : Modity Keys 3-128 Programming Execution Functions
3-70 Store and Recall Assign Zero Phase Reference
3-72 OPERATOR'S CHECKS Perform Amplitude Calibration
3-74 Self Test Start Single Sweep
3-76 Output Checks Start Continuous Sweep
3-78 OPERATOR'S MAINTENANCE Perform Self Test
3-81 HP—IB OPERATION 3-130 Programming Amplitude Units Conversion
3-83 General HP-IB Description 3-132 Programming Storage Registers
Figure 3-3, Interface Connections and Bus 3-134 Service Reguests
Structure 3-136 Serial Poll
Table 3-5, General Interface Management 3-138 Status Byte
Lines 3-140 Busy Flag
3-88 Definition of HP-IB Terms and Concepts 3-142 Sweep Flag |
3-89 Rasic Device Communication Capability 3-144 Masking or Enabling Service Requests
3-91 Message Definitions —. | Table 3-11, SRQ Mask/Enable Data
Table 3-6, Definition of Meta Messages 3-146 interrogating Program Errors
3-93 3325A Response to Messages 3-148 Interrogating Entry Parameters
Table 3-7, Implementation of Messages 3-150 interrogating Function {Waveformi
3-85 HP-IB Work Sheet 3-152 interrogating Miscellaneous Parameters
3-97 HP --IB Addressing 3-154 Using the interrogate Capability
3-156 3325A Programming Procedure
Appendices -
A-3 META MESSAGES BLOCK DIAGRAMMED
3-3 PROGRAMMING THE MODEL 3325A with the
a825A CALCULATOR
"14 8504 эми
‘L | "JBULIOISUÉS] тело
‘Cr (9G-E ydeBe1rg 888) dOGMS SU] JO UOIO[QGUIOD JE
USIU pue 'dn desms e Buuinp AouenDa:] 19HJ81U PSHIOBIES
But 18 MO} S90B INndINO DIGHEGUIOT Ев зщ 'HIYHYIA
; ir
496-0 Udeibeie4 ses) LONEJado dn-dsoms e Buunp
‘LES 09-8 ydesBelied aas) uoneledo dsasms
Bb Bupnp luasald si Indino ejgliiedutos TP 1 Y NNYTg 7
| ‘GK (фб-Б ydeibeieg des) ZHIN
17 snoge pauwnuesfod si Anuanbalj ARM SUIS BY UBYM
andino sy) 18 SIGENBAB S! ¡PUÁIS Y ZHA OS-17 XNY
"OLr'S| Lua 101080000 SUÁS jaued 104
8143 12 indino SU) 0) ¡poNLept si Indino sE LNO DNAS
‘Br (Z9-€ ydesbeleg
2981 EÑENOA dead wnuwixew A gx ¡0 ¡PUBIS Sunemipor
opmidiue ue 104 4010820000 jNdur “CoN ОБЕ
à 45 199€
ydeibeieg 995) OBRLIOA HEOd WUNUHXEW AG = 10 [Вибе
Buneinpos aseud e 10) JOJOSUMUDO INQUI "GON 35 YHd
LE YIMOIE
SU OO
ueyr ssa; Ag peleuuisl 51 (200 uondo) indino
200M0A Чуб SU} 4! YNSBI AQU! SUOIIDUOI 1ejiUIS
serouanbal; 18U6n 12 AHBNOMiRE ‘упвел AB
LOILIOISID argensapun (ardiiexa 104 “Deo; aouepad
441 UBH ej peo; wiyo-0G ¡eu1a)xa Ue Ág palet
181 700 51 1ndino ¡BUBIS MISLINIISOI DIBDUEIS OU |
VONembuos INdino 1ea4/1U04
piepuels sul Buygeus pue indino a5eljos
Yon; 37 Guigesia (7 10 “Indino ¡pubis ¡sued }u01;
Bi DURISUUOISID ‘Âjuo joued ies) 347 чо ind
-n0 308/04 Ub /prepuels SU) Выше (| :SABM
ола} ¡O SU0 UI INdino ¡BubIs ¡Sued teas 841 BUieal]
-98 107 "W dnoo e21A10S HA VONDES "JRNUBIA
4105 pue Sunerssdo ey) UN USAJID ase SUONINIS
4} “Dafeisul 7200 wondo nding oberon yb
BY SRIF JUOLUNANSUI BY) 4! (UCHOGUUOI JBUÉIS JEU
-181U OU) BANI2UI SI INdino ¡PUBIS ¡Ued 1001 al
210M
("nding pubis
joued 1891 DABU 10U OD ZOO Yondo Yum siuStunisUL
‘Gr CLL WB CARY ATING HRY sued 10041) 9Ul Ág
AOVIBULOS SIUI 03 POUYOHMAS Si JEUÉIS 1Nd350 8U1 TYNOIS
ar A0I03UU00 5143 17 QE{IRAR 5! Но
-419 994818j81 YO ZE € 9U1 LUOJE TPUÁIS ZHIN E Y ПО За
'OM 30 LIB 1019380000) sig] блонд
pausidWuodoe si apor LIEISAS Yi-dH UB JO sues
AG VQZEE OUI JO ¡OMUOS SIOWBY “OIOVULIOS Gil
rie
ydeibried 898} 80U8IBL8I ZHIN OF еше 84) 300)
aseyd 0) pesn sq ABW alusIidies [BLUDIXS UY NE 434
‘ЕЯ “A0198UUO0 1N0UI HZFAAOd DV
©
®
®
@ ©
®
©
E)
® © ©
er ‘assoc
-INd SIUYI 101 100 UONGO Yim peyddns st ‘GEV L-04C 1
‘ON Hed -di- 410310800002 (8193805 у LE We
‘403080002 A| 43H 847} 01 реззаниоо aq isnw 1 nding
о чело SU} J0 8SN eye: o | 7 LOQ vondo ym зуившла5Н)
up Ájuo juesalid si ¡pUÑSIS SIUL INAdLAO N3AO ZHIN OL
¿ir
"pesny se sindino ¡oxide oBeyoA USI pue piepuels
'SUYO 009 3888; 18 aQ 35004 eouepodun peo ZHM |
je sWo OL > PUR 2D 1B WUD | > Ajeuiliou Si souepad
"uit indino 200 Vendo nding ebeyoa yb ‘swyo
OS si equepedin INdino pierpuels па JYNDIS
"papi
-0J0d si 1ndino ¡pubis ¡eued 1291 OU “SiUelUINHosul ZOO
uondo ul 700 vando 10), ZHN 1-0 VU Op ‘ddA Ov,
pajege[ si As» ay | ‘но si INndino sSelios UBH Sul LBLUAA
saleoIPu¡ JOIEJOUNUVE OUI DUC 'indino sBeljon ybiy
O1 ¡RUIN WOJJ SSUSIZAS ÁSYy «141 ZOO UONdO nding
SOE2HOA USIM YIIMA SIUSLUNJISUN) U 'UO SP ÁSY OUI 16 JajUEY
SU UI IO1BIGUNUUE eli UBLUM 8A1308 si INdino ¡aued Jeay
'ESIBA 391 pue ound 1981 01 JUOJ) Wo INdINO feuds
SOLYOIIMS “sIISUINASUI Plepuels UL 'ÁSY AJTNO HVIH
| "tyg-6 udoibeled
aes) aAnloe si indino xy sued Sead yl usym UD
SI A01BIOUNUUE SIU 10) BIOUNUUP HYDE ZHIAY 09-17 XAY
‘CP UFL-E
ude BezeJ 995 “SÔEJOA 195110 SP 10 SIJOA 0187) ‘7UIOd JDAO
-58049 [BUDIS 1Ndino ell UTA JUÁS Ul SABRMJE Si [BUDIS SIG I
"87 We '10j0SUUOS ремней звез в 18 OSjE PUB I0208UUOO
SIU FE OIGEIIBAB SI JEUBIS SUÁS SAEM SIENDS Y * ¿NO DNAS
A ZP T SI 540)
-98uu00 ¡eu6IS INdino 10 INdul YO 705 ali ¡0 Áue
16 1019INPUO3 181110 81] PUB SISSBYOD UBBMIIG pad
-de Ajajes Эа URI 181] 8BB10A YB80 (UNIX BU вц!
NOLLA7O |
1001-Е наебезва 298) нопелейо 188) ¡ES
e SALEN ‘As xijeid onig ay1 Ag popaceid uSUAA (65-5
ydeibBeley ses) jeubis 1ndino sUl ¡O les yO pue aepniidiue
BU} S8}EJGHEO Apedtewoiny ‘Лех IVD QLJAV
“POLJUIBIBO1d SE VONBINPOUL
авеца ю ууу зецие воно SI JOJEINUNLULE NOLLYINCON
"3008418048 JEUJ01X8
SLI 0) POHI0] SSEUd JOU S!| 0908191831 (PUIOIUI ZHIA OC OUI
11 SOUSEH JOIBIOUNUVY "NI 434 ¡pued 1ea1 a 0) pajosu
-409 ei 80U815181 UGAO ZHIN OL JEUJSIUI [OQ uondQ
31) 10 900818481 JEUJ03X9 VE JI UO SI JO1BIGUNUUE J9H 13
492-7 YdBIDEIES 885) AJUC OD 10 UOGROUN]
'RUBIS INdino ay] j00jes SAox assay ‘CNO1B NOM ONN:
| "5504560410 UI S1 AQUS UE 18U) SSIPSIPU
JOTEIOUNUUS AJJUZ ‘ABJOSID OUOUINU 811 AQ PSJUSS91081
BUINJOA jo SHUN SU] Aejdsig CSIO)BIOUNUUE с
“BIP 3843 JUSLUSIJEP JO JUSLISIOLI SAS MOLE IRONIA
941 pue Чибтр зубна в Ад разворн) рашрош аа 01 HÔID
BU1 108198 SAS) MOLIR JELULOZHOUY OU] ‘AnoiË AAICION
"SUOIJOUNI чопертрон эцу юлиоо
ULUMIOS 348 9U3 UN SÁS sUN 'Ásy Xiaid enig au) Ag papao
-81d USUAA ÁSYy 128|7) Állue a pue 'sÁABSy pUBLJLLIOS
2064 PUE dI015 al 'SÁSY Xij¿ns anjea glep 9Ul 'SÁSy
езер DIISUINU OU} SOPNIOUI dnoub siyy “drciB viva
© ©
®
‘81818 UONBINPOU aseud pur SOPNINQUIE ‘SSOIDHE
Ei-dH 'SSPpow eine; ‘Sap00 1049 ‘D81DO/SS JOIOLULIEO
aul 40 SAJEA aul SAB[ASIQ 'ARJOSID OIHFNONYHSTY
‘SISjGUIBIRE
pubis Bututue)BOid 10) sÁSy Xpeld ‘dnOb AHINS
(DES) sonas 1senDay ‘U91517 03 passaippy Bi
O Possalppy SIOUISY те GI-dH VSZEE 8143 SIBOID
-U} SIOIBIOUNUUE 3589441 "dro IOIROUNQUE SANIIVIS
"opos
1eLUISEDp UI psáridsip aq 01 ssalppe Gi-dH YGZES OUI
SOSNELD AS% SIUI “ADÿ xiJaid enjg sul Ág paepeoaid UBLIAA
‘pouitueiBoid uasd seu inoyD07 2707 SSN ¡OJjUOS
jouæd 3101; O} 8101181 WOH YGZEE SUINIOH 'ÁSY VIO ©
‘spouëd IB9y DUE JUONT VSTEE "IC INSEL
‘uOonOates Bo:
JABBUEH DUB SUOINOUNI VONDOMIPOU dSOAS JOITUOD SASY
1019UiBied daaMms ey) AS xHGId ang 9143 Ag papocaid
USUAA 'SÁOY liels dosms el) snjd 'c1ajeumied dogmas
BU} 404 SAON X1491d Anue aie ssauy: dROJB AO JI3MAS
"SM LI DOjIBGBI suonouns Ay Bul jo
AUB 3108188 0] D9858.10 8G 15000 ÁSy SILI | CABy x14810 ME
“suno.a9 Arddns зе мод ен)
-03 UONIppe ul (700 valido) sima indino aBelidA VUBIH
-8U1 pue 10M1eq UONejos; BUI 01 {BUISIXS alE TEL] SUÑOJIO
SIBHOIUI G|-dH 941 (1100 vendo) usag au oi pandar
81 19MOd ‘UOIISOŸ AGLS aul ul AO) NO/AS.LS HIMOd
© ©
©
ct
ATM THRE A
EARL LE
a E Ce
TERRE AECI SARA,
X
EEL
Teg E
эт вены Senses $
© © OO
Lil
LES LU LE! ul
us
18 UN
En
Lal 18)
il ab LEDO AB wl
UTA i
Fog
RO
io 1 8
x ия
Model 3325A
NOTE
The HP-IB is Hewlett-Packard Company's
implementation of IEEE Standard 488-1978.
3-3. PANEL FEATURES.
3-4. Figure 3-1 identifies and describes the functions of
the front and rear panel controls, indicators, and con-
nectors.
3-5. POWER/WARM-—UP.
3-6. The Model 3325A requires a power source of 100,
120, 220, or 240 Vac, + 5% -10%, 48 to 66 Hz single
phase. The selection of line voltage and fuse is described
in Paragraph 2-8 and Figure 2-1.
3-7, The 3325A POWER switch has two positions,
STBY and ON. Power is apphed to some circuits at any
time the instrument 1s connected to the ac power source.
If the instrument has the Oven Assembly Option 001 in-
stalled, it is important that it remain connected to the
power source to maintain a constant oven temperature,
eliminating the need for a long warm-up peried. If an
instrument with the Oven Assembly has been discon-
nected from ac power no longer than 24 hours, a
IS-minute warmup period is sufficient to bring the
reference frequency to within — 1 x 107 of final value.
3-8. INITIAL CONDITIONS.
3-9. After the POWER switch has been set to ON,
the instrument status will be as follows:
Function ....... ae. Sine
Frequency. ............ Cee 1000 Hz
Amplitude... o.oo 1 mV p-p
Phase....... PA O des.
DC Offset... iin. ОУ
Front Signal Output
SWECD. LL 1112 0 LL LL LL 4 1 A aa 446 Linear
start Frequency... | МН?
Stop Frequency............ 10 MHz
‘Marker Frequency............ 5 MHz
Time. .erioeraceneeredros 1 sec
NOTES
1. If the display reads OSC FAIL the fre-
quency synthesis circuits are not operating
properly. -
2. If A-CAL FAIL appears in the display
momentarily after turn-on, any one of the
three AMPTD CAL tests could be incorrect.
Perform a SELF TEST operation to identify
the failure.
3. If either of the above conditions occurs,
refer the instrument to qualified service per-
sonnel for repair.
Operation
3-10. SELF TEST,
3-11. The self test operation is initiated by pressing the -
blue prefix key, then the SELF TEST key (AMPTD
CAL). This test uses the control, ROM, and control
clock circuits to perform the following checks:
LED check: Turns on all LEDs for about 2.
seconds |
Check 1: Tests AMPTD CAL of the sine wave
Check 2: Tests AMPTD CAL of the square wave
Check 3: Tests AMPTD CAL of the triangle wave
Following each check the display indicates either PASS
or FAIL for approximately one second. If all tests pass,
this indicates that approximately 60% of all circuits are
operating properly. |
3-12. FRONT/REAR SIGNAL OUTPUT.
The maximum peak voltage that can be safe-
y applied between chassis and the outer con-
ductor of any of the 33254 input or oufpui
signal connectors is +42 V. |
3-13, The standard Model 3325A provides selectable
front or rear panel 50-ohm signal outputs. The rear
panel signal output is selected by pressing the REAR
ONLY key. The lighted indicator in the center of this
key denotes that the signal output is at the rear panel.
NOTE °
The rear panel SIGNAL output is not pre-
sent on instruments equipped with the High-
Voltage Outpur Option 002.
3-14, SYNC QUTPUT,
3-15. A square wave sync output is provided at BNC
connectors on both the front and rear panels. This sync:
signal is always in phase with the output signal, with the
sync transition occurring at the signal zero crossing, or
when the signal crosses the dc offset voltage. The output
impedance of either front or rear panel sync output Is
approximately 50 ohms. When connected to a 30-ohm
coaxial cable that is terminated by a 30 ohm resistive
load, the sync signal levels are as follows:
Low Level = < 0.2V
High levei = > 1.2 V
NOTE
If a sync output is connected to à 50-ohm
coaxial cable that is terminated by a high im-
pedance load (=1 megohm) the voltage
levels are approximately twice the values
given above. However, the improper ter-
3-3
Operation
mination of the 50-ohm system will cause
ringing al the positive and negative transi-
lions of the sync signal.
3-16. EXTERNAL REFERENCE INPUT.
3-17. The 3325A may be operated with an external
reference to. control the standard 30 MHz internal
reference oscillator frequency. The external reference
level must be greater than 0 dBm (50 ohms), and the fre-
quency must be within 10 PPM of 10 MHz or a sub-
multiple thereof down to 1 MHz (10, 5, 3.33, 2.5, or |
MHz). The front panel EXT REF annunciator will light
to indicate that an external reference is being used. The
internal reference oscillator is phase locked to the exter-
nal reference, and a phase lock detector circuit causes
the EXT REF light to flash if synchronization is lost.
3-18. 10 MHz OVEN OPTION 001.
3-19, Option 001 is a temperature stabilized 10 MHz
oscillator which provides improved frequency stability
(sec specifications in Table 1-1). The output from this
oscillator is at the rear panel 10 MHz OVEN OUTPUT
connector. This output must be connected to the EXT
REF input. A special connector, -hp- Part No.
1250-1499, is provided with Option 001 for this pur-
pose. “
3-20. MANUAL PROGRAMMING.
3-21. The following paragraphs describe the procedures
for operating the 3325A from the front panel, Also in-
cluded are the limits for each parameter,
3-22. Clear Display,
3-23. Pressing the CLEAR key (in the left column of
the DATA group) clears the display to zero. This key is
useful when an error is made while entering data.
3-24. Entry Errors.
3-25. The word “Error” will appear in the display for
approximately one second when an error in programm-
ing occurs. The incorrect entry will not be accepted.
ASCII
Numeric Error
I | Entry parameter out of bounds (for example, Freq = 61
MHz)
Invalid delimiter
3 Frequency too large for function (for example, Function =
Triangle, Freq z 11 kHz)
Sweep time too small or too large
5 Offset incompatible with amplitude, or amplitude incom-
patible with offset |
6 Sweep frequency too large for function; Sweep bandwidth
too small; Start frequency too small (log sweep); Start fre.
quency greater than stop frequency (log sweep)
7 Unrecognizable mnemonic received
8 Unrecognizable data character received
9 Option does not exist (High Voltage or Rear/Front)
3-4
3-28. Function Selection.
PILZE FÜNGT [ON TI
| TL veh al Ps
рее a E ee
Le Le hol Le) [oi
| ad LE
| ZOMH = PORE 7 | Ortiz IRE | hz
| DC OFFSET
o .
| i
3-27. Any of the five functions may be selected by
pressing the appropriate FUNCTION key, A light in the.
center of the key indicates the present function. Pressing
the same key the second time removes the ac signal, set-
ting the output to zero unless a de offset has been pro-
grammed (see Paragraph 3-43). When the ac signal is
removed in this way, the instrument automatically
displays de offset, and the de offset entry key light
comes on. The ac signal can be restored by pressing the
FUNCTION key again. The output signal for each
function is centered about zero volts unless a dc offset
has been programmed.
NOTE
The standard instrument signal output must
be terminated by an external 50-ohm load or
sine wave distortion and square wave over-
shoot may result, particularly at higher fre-
quencies.
3-28. Frequency Entry, 0
ay
a
CTT) AE
LJ
A lighted indicator in the center o f any entry
key denotes it as the active entry parameter.
For example, if the FREO entry key in-
dicator is on, it is not necessary to press thát -
key before entering data.
3-29. Enter frequency by first pressing the FREQ EN-
TRY key, then the numerical data, followed by the data
suffix (delimiter) key (Hz, kHz, MHz). Numerical data
must be entered most significant digit first, entering the
decimal in the proper place. The frequency parameter is -
stored 1n the 3325A when the delimiter key is pressed.
3-30. Frequency Limits.
3-31. The minimum frequency for all functions is
I uHz. The nominal maximum frequency for each func-
поп 15 shown below the function select key on the front
TERRE
=
momo
E
al
LÉ ;
LE El Les Led: ELE: wd
LE ES)
(al
(El Ww 48
ig LÉ fal id
Là 18) A7 LADO AR) AM) LR) LW LES LR
Model 3325A
Table 3-2. Amplitude Limits of AC Functions.
Peak-to-Peak | rms dBm (50 2}
Function Max. Min. Max Min. Max. Min,
Sine 10V 1mV | 3.536 V 0.354 mV | +23.98 56.02
Square 10 V 1 mv 5.000 Y 0.5 mv + 26.99 53.01
Triangle 10 V T my 2.888 V 0.289 mV + 22.227 57.78
+ Ramp 10 V I mV 2.888 Y 0.289 mv + 22,27 57.78
Operation
panel. However, because of the overrange capability of
the 3325A, the maximum frequency for each function 15 -
as shown below: |
Sine wave 20 999 999.999 Hz
Square wave 10 999 999,999 Hz
Triangle 10 999.999 999 Hz
10 999,999 999 Hz
10 999.999 999 Hz
Positive slope ramp
Negative slope ramp -
3-32. Frequency Display and Resolution.
3-33. Frequency is always displayed in Hz, even though
the entry may have been made in kHz or MHz. For ex-
ample, an entry of 1.2 MHz 1s displayed as
1 200 000.0 Hz. Non-significant zeroes to the right of
the first digit following the decimal point are not
displayed except during a “modify” condition (see
Paragraph 3-68). The maximum resolution is 1 uHz for
frequencies up to and including 99 999,999 999 Hz, and
! mHz for frequencies of 100 000.000 Hz and higher.
3-34. Auxiliary Qutput (Sine Function Gniy).
3-35. À rear-panel auxiliary output can be used for fre-
quencies above 19 MHz to a maximum of 60 999
999.999 Hz, The output level is a nominal 0 dBm into 50
ohms. The output automatically switches to the AUX
output when frequencies of 21 000 000.000 Hz or higher
are programmed. For this reason, the AUX output 15
labeled “21-60 MHz’. Frequencies between 19 MHz
and 21 MHz can be obtained at the AUX output only by
first entering 2! MHz or higher, then entering the
desired frequency. For example, if the desired frequency
is 19.5 MHz, first enter “FREQ 21 MHZ", then
19.5 MHz”, Then, if a front panel SIGNAL output of
19.5 MHz (or any frequency between 19 MHz and
21 MHz) is desired, enter any frequency 19 MHZ or
lower, then enter 19.5 MHz.
NOTE
Only one signal output is active at one time.
A lighted “21-60 MHZ Rear” annunciator in-
dicates that the rear panel AUX, 0 dBm, 21-60
MHZ output is active. A lighted “Signal, Rear
Only” annunciator indicates that the rear
panel signal output is active, Neither light on,
indicates the front panel signal output is
active.
3-36. Amplitude Entry.
3-37. Amplitude is entered and displayed with 4-digit
resolution. Press the AMPTD ENTRY key, then the
numerical data, followed by the V, mV, Vrms, mVrms,
or dBm key. The V and mV keys enter peak-to-peak
value of ac functions. Maximum and minimum
amplitudes for each function are shown in Table 3-2,
3-38. The 3325A will convert an amplitude value be-
tween peak-to-peak, rms, or dBm for any function. For
example, if a sine wave amplitude of 10 V p-p has been
entered, press the Vrms or mVrms key to display the
same amplitude as 3,536 Vrms, or press the dBm key to
display the value as (+)23.98 dBm.
3-39. Amplitude Calibration,
AMPTD CAE
> EXT REF брт
С) MODULATION mr
cian — SELF TEST
3-40. The 3325A will calibrate the output signal when
the AMPTD CAL key is pressed. The output goes to
less than 4. mV p-p while the calibration is in process. An
“ amplitude and offset calibration is performed auto-
matically whenever the function is switched and at in-
strument turn-on. -
NOTE
If A~-CAL FAIL appears in the display
momentarily after an AMPTD CAL opera-
tion, the instrument should be referred to
qualified service personnel for repair.
3-3
Operation
3-41. High Voltage Output Option 002.
oo SEGNAL rove, AUX SYNC OUT
ACNE АГ. 2 1-5 2
O] "то ©
42 MAX ve + dou REAR 40 MAX
4 + |
3-42. The high voltage output is selected by pressing the
key in the lower right corner of the front panel, This op-
tion provides a maximum output of 40 V p-p into a high
impedance. The load resistance must be greater than 500
ohms or distortion will result, particularly at higher fre-
quencies. To assure square wave overshoot < 5% of
peak-to-peak output, the total capacitance connected to
the output should be < 500 pF, The same entry pro-
cedures and display features apply as in the standard
operation. Maximum and minimum amplitudes are
shown in Table 3-3. Maximum frequency for sine and
square wave functions is 1 MHz (10 kHz for triangle
and ramps).
NOTE
The rear panel signal output is inactive (no
internal signal connection) if the instrument
has the High Voltage Qutpur Option 002 in-
stalled. Instructions are given in the
Operating and Service Manual, Section VIT
Service Group M, for activating the rear
panel signal output in one of two ways: 1)
Placing the standard/high voltage output on
the rear panel only, disconnecting the froni
panel signal output, or 2) Disabling the high
voltage output and enabling the standard
Jront/rear output configuration,
3-43. DC Offset,
Me,
Моде! 3325 А
Table 3-3. High Voltage Output Amplitudes (Option 002).
Peak-to-Peak - rms -
Function Max. Min, Max. Min,
Sine 40 V 4 my 14,14 V 1,42 mV
Square 40 V 4 mv 20.0 Y 2.0 mv
Triangle 40V 4mV 11.55 V 1.15 mY
+ Ramp 40 V 4 mv 11,55 V 1.16 mv
3-44, Offset Only, No AC Function. When no ac func-
tion is present, the de voltage output may be programmed
from OmV to + 5V, with 4 digit resolution. When no ac
function is present, the DC OFFSET entry prefix is au-
tomatically selected. It is necessary merely to enter the
numerical data followed by the V or mV delimiter. The
rms keys cannot be used to enter offset.
NOTE
When the High Voltage Output is selected
(Option 002), minimum amplitude Jor de
only (no ac function} is 0.01 mV and max-
imum is 20.0 V, |
3-45. Offset with AC Function. When dc offset is to be -
added to any ac function, there are minimum and max- …
imum offset limits which must be observed. These limits
are affected by the ac voltage and the resulting at-
tenuator settings, which are shown in Table 3-4. Figure
3-2 1s a set of graphs which show the approximate max-
imum dc offset permissible for a given ac peak-to-peak
voltage, The following equation may be used to deter-
mine maximum offset voltage.
м
> Amptd
A 2
Maximum dc offset =
Where A = Attenuator factor (from Table 3-4)
Amptd = Amplitude in V p-p of the ac function
NOTES
1, If an attempt is made to enter a de offset
that is too great for the amplitude already
programmed, “Error 5” will appear in the
display momentarily, and the de offset entry .
will not be accepted.
2. After a dc offset has been entered, if the
amplitude (ac) is then increased beyond the.
level where the amplitude and offset are
compatible, “Error 5” will appear in the
display momentarily, and the ac amplitude
entry will not be accepted.
(i
|"
rez
ET
¡Eo
TE
Ladd Lit LA]
Lis led LR
LE
{di El
til
181 18}; LE 18) LEN 413) EA LE)
|
O
OÙ
Model 3325A
3. The minimum and maximum permissible
de offset voltages when the High Voltage
Output is selected (Option 002) may be
determined by multiplying the amplitude
and offset values in Table 3-4 by four. This
also applies for Figure 3-2. Change the
above equation (for determining maximum
de offset) to the following:
td
Maximum dc offset = 2 mp.
4. Resolution of a de offset entry (with ac
function) is determined by the resolution of
the ac amplitude.
3-46. Phase Entry.
3-47. The phase of the SIGNAL output can be shifted
up to +719.99 with respect to the | MHz REF OUT
(rear panel). Phase shift entry resolution is 0.1°. To pro-
gram phase shift, press the PHASE ENTRY key, enter
Operation
number of degrees of phase desired, then press the
“deg”” key. For a negative phase shift, press the “—”
key before entering the numerical data. For square wave
frequencies below 25 kHz, phase changes greater than
25° may result in a phase shift + 180% from the desired
amount.
3-48. After entering a phase shift, the new phase may
be assigned the zero phase position, and subsequent
changes in phase referenced to that point. To assign
zero phase, press the blue entry prefix key, then press
ASGN ZERO 8 (PHASE) key.
3-49. Frequency Sweep.
3-50. Frequency sweep 15 phase continuous over the fuil
frequency range; that is, there are no discontinuities in
the output waveform. When the instrument is turned
on, the sweep mode 1s set to linear, and the parameters
are set as follows:
Start Frequency............ 1 000 000.0 Hz
Stop Freguency..........- 10 006 000.0 Hz
Marker Freguency. ....... ..5 000 000.0 Hz
TIME. ee ee, 1.0 sec
Table 3-4. Maximum DC Offset with any AC Function.
AC Amplitude
Entry Maximum DC Minimum DC Attenuation
ipeak-to-peak) Offset {+ or ~} Offset Entry Hange Factor
1.000 mv with 4.500 mV
to 0.001 mV 7 A = 1000
3.333 mV with 3.333 mV
3.334 mV with 14.399 mV
10 0.001 mV 6 = 300
9.399 mY with 11.68 mV
10.00 mV with 45.00 mv
to 0.010 my 5 À = 100
33.33 mV with 33.33 mV
33.34 mV with 149.3 mv
to 0.010 mV 4 A = 30
93.99 mV with 118.6 mV
100.0 mV with 450.0 mv | |
to 0.100 mv 3 À = 10
333.3 mV with 333.3 mV
333.4 mV with 1,499 V
to 0.100 mV 2 А = 3.
388.9 mV with 1.166 V
1.000 У with 4,500 Y
to 1.000 mV 1 А = 1
9.998 V with 0.601 V
Operation
Model 3325A
DC OFFSET
DC OFFSET
DC OFFSET
+
CA
ГО
Oo
O
О
‘Л
т
{ad
Го
D
O
AC VOLTAGE 1.000
TO 8.998Y, MINIMUM
| 2 3 4 5 5 7 6 910
PEAK-TO-PEAK AC VOLTAGE
AC VOLTAGE MINIMUM OFFSET |
|
333.4mV TO 999. amy | O. mv
33.34mV TO 99.99my | 0.01mV
3.334mV TO 9.999 | 0.00 my
| 2 3 4 7 5 7 8 3 10
РЕАК-ТО-РЕАК AC VOLTAGE
AC YOLTAGE MINIMUM OFFSET
100.0mV TO 333. amy О. гу
'0.00mY TO 33.33my 0.0 my
[.000mV TO 3.333mv O.00imy
| 2 3 4 5 6 7 3
3
PEAK-TO-PEAK AC VOLTAGE
3325A-30
10
Figure 3-2. Maximum DC Offset With AC Functions
Vas puit
ie
Lal
ini
LAS LU LE El US LEN tel dal 181 dé)
ADO LB ав)
ig LE; LE ;
PEI LR:
LB
A1 1 à LE 1 Li 1
Model 3325A
NOTE
The Marker Frequency must be lower than
Stop Frequency by a sufficient amount 10
permit the Marker pulse width to be approxi-
mately 400 microseconds. See Paragraph
3-55. |
To change any of the sweep parameters, press the ap-
propriate SWEEP entry key, then enter the desired
data. To select LOG sweep, press the blue prefix key
and then the LOG (TIME) key. The log indicator should
light. The sweep mode is linear unless this light is on.
Be
EE "
a E | _—1.08 sweep indicator
3-51. Linear Sweep. In linear mode, either CON-
TINUOUS or SINGLE sweep may be used. Single
sweep is from START to STOP frequency, and either
START or STOP may be the higher frequency. To
begin a single sweep:
Press “RESET/START” key to set output and
display to the start frequency selected and reset the
X Drive ramp.
Press “RESET/START key again to start the
sweep.
| RESEI/ OM
Indicator is ON during a sweep
DO SINGLE MRK
“оны
—
The output frequency sweeps to the STOP frequency
selected and remains there. This frequency appears in
the display. Continuous sweep is up-down-up, etc., and
begins when the “START CONT” key is pressed. Con-
{inuous sweep may be stopped by pressing the “START
CONT” key again, or by pressing “START SINGLE”,
“TREO ENTRY”, or “PHASE ENTRY”. The display
will indicate the frequency at which the sweep stopped.
The sweep will stop while any other parameter is being
changed, then will restart. Pressing “AMPTD CAL”,
“SELF TEST”, “ASSIGNZERO 9”, or changing the
function will also stop continuous sweep.
(CH SHEE
i START
ON
| Г Indicator is ON during sweep
3-52. Log Sweep. In either single or continuous log sweep
» Mode, the stop frequency must be higher than the start
ÿ frequency, and sweep is up only. (Continuous sweep is
start to stop, start to stop, etc.) The minimum bandwidth
for log sweep is one decade. Single log sweep is a line-
segmented log approximation in one-tenth decade seg-
Operation
ments, and continuous log sweep 1s a two-segment log
approximation,
NOTE
Because of rhe computation time required by
the control circuits in log sweep, the actual
stop frequency (which is displayed at the end
of a single sweep) will be higher than the
selected stop frequency, but always within
0.25%. The error decreases as sweep time is
increased.
3-53. Sweep Time. The maximum time per sweep (up or
down) for all sweep modes is 99,99 seconds, with .01
second resolution for times = 1 second, and .001 second
resolution for times <1 second. Minimum times are as
foliows:
Linear sweep, single or continuous. . 0.010 5
Log sweep
Single... .... ae 2.000 $
Continuous. ........... e. 0.100 s
NOTE
In single log sweep, the sweep time Is in-
creased by the processing time required
between segments. The time increase (fin
seconds) Is approximately equal to
stop frequency
‚045 10 log start frequency
3-54. Sweep Bandwidth. The maximum sweep band-
width is the full frequency range for the function
selected, except that in log sweep, the minimum fre-
quency i$ 1 Hz. The minimum bandwidth for log sweep
18 one decade. Minimum bandwidth for each function
(linear sweep) is as follows:
Sine............ (IO mHz/s) X (sweep time)
Square. ......... (5 mHZ/s) Xx (sweep time)
Triangle, ...... (0.5 mHz/s) Xx (sweep time)
Ramps.......... (1 mHz/s) x (sweep time)
For sweep bandwidths of less than 100 times the
minimum, Bandwidth selected should be an integral
multiple of the minimum. In linear sweep mode the
sweep bandwidth may be multiplied or divided by two
by pressing the blue prefix key and then “Afx2” or
“Af.27, These bandwidth modification keys do not
operate in log sweep mode.
3-55. Sweep Marker.
3-56. The marker frequency may be set to any point
within the sweep band up to within approximately 400
microseconds of the stop frequency. If the marker fre-
quency is set beyond this point, the stop frequency will |
automatically be increased so that the marker pulse is
3.9
Operation
approximately 400 microseconds wide. The following
equation may be used to determine the approximate
maximum marker frequency:
Max. marker freq. = stop freq. -
sweep time
The rear panel MARKER output is ‘at TTL compatibie
voitage levels. Itis High at the start of a sweep up, goes
Low at the selected marker frequency, then High again
at the stop frequency. No marker output is present dur-
ing sweep down or during a log sweep. Set the marker
frequency by pressing the “MER FREQ” key and
entering the numerical data and the frequency suffix.
3-57. The sweep band can be moved up or down to
center on the marker frequency by pressing the blue
prefix key and then the MKR — CF(MKR FREQ) key,
This does not change the sweep bandwidth unless either
the new upper or lower limit would be bevond the fre-
quency limit for the present function.
3-58. Sweep X Drive Output.
3-59. The rear panel X DRIVE output is as follows:
Linear sweep:
Single: 0 V at start, increasing linearly to > + 10 V
at stop, whether the sweep is up or down. Re-
mains at essentially this voltage until reset prior
io the start of another sweep. (Voltage will drift
downward less than 10 mV/s.)
Continuous: Increases linearly from 0 V to
> +10 V during sweep up, then goes to 0 V at
beginning of sweep down and remains at 0 V
during sweep down. . |
Log sweep: Starts at 0 Y and increases to > +10 Y
with the sweep segments.
NOTE
The X DRIVE output has a nominal voltage
of + 10.5 V at the end of a sweep. This final
voltage is specified to be greater than 10.0 V
10 ensure compatibility with oscilloscopes
having a horizontal sensitivity of 10.0 Y for
Jull-screen deflection.
X DRIVE output voltage is linear with time
in both linear and log sweep modes.
3-60. Sweep Z Blank Output. |
3-61. The Z BLANK output voltages are TTL compati-
ble, and the output logic levels are as follows: -
Linear sweep:
Singie: Goes LOW atstart of sweep, HIGH at stop,
whether the sweep is up or down. Remains
until start of next sweep. |
Continuous: LOW during sweep up, HIGH during
sweep down. |
3-10
.0004 x bandwidth
Model 3325A
Log sweep: Goes LOW at start frequency, HIGH at …
stop. In single sweep, remains HIGH until start off
next sweep. In continuous sweep, is HIGH momen- =
tarily at stop frequency.
When the Z BLANK output is low, it is capable of sink-
ing current through a relay or other device. The max-
imum ratings are:
Maximum current sink: 200 mA
Aliowable voltage range: 0 Y to +43 Y de
Maximum power (voltage at output x current): 1 W
3-62. Amplitude Modulation.
3-63. To program amplitude modulation, press the blue@
prefix key, then press the “AM ON” (STORE) key. To =~
remove the modulation, press the blue key, then “AM
OFF” (RECALL). The display shows “A ON’ or “A
OFF” momentarily to indicate the status of the
amplitude modulation. The status of phase modulation
(P ON or P OFF) is displayed at the same time. The
modulation input must be connected to the rear panel
AMPTD MOD input. The impedance of this input is
20 kQ-(10 kQ when AM is OFF). о
3-64. When amplitude modulation is programmed, the
amplitude of the output signal (with no modulation) is
halved; however, the display still indicates the program-
med amplitude. Then, when the output (carrier) is
modulated 100%, the maximum amplitude of the
modulated output equals the programmed amplitude, A
modulation input of approximately 5 Y peak results in
100% modulation. Modulation frequency may be 0 to
50 kHz. If amplitude modulation is ON when 3325A
functions other than sine wave are selected, the output
may be gated, depending on the level of the modulation
input. Amplitude modulation should be used only with -
the sine wave function, and the modulation input
should not exceed + 10 V peak.
3-65. A dc voltage may be applied to the AMPTD .
MOD input to control the 3325A output level, or a puise |
may be used to gate the output. Approximately +5 ve
cuts off the output signal, while approximately -5 V
doubles the output. (Maximum output is 10 V p-p.) DC
or puise inputs should not exceed +5 V peak.
Lai
A
Mino :
ro
Lal
181 {il
z=.)
LE
Lim + Ls Li + LE
A A Sa RE
il ATICO
, 3-68. Modify Keys.
LEI LA AL Lgl fa AL iE)
Model 3325A
3 6. Phase Modulation.
3-67. To program phase modulation, press the blue
prefix key, the the “YM ON” (CLEAR) key, and to
remove phase modulation, press the blue key, then “UM
OFF” (-). The phase modulation signal at the rear panel
PHASE MOD input may be up to +10 Y peak. The in-
put impedance is 10 kQ. The modulating signal frequen-
Cy may be de to 5 kHz. An input of +5 V results in the
following approximate phase deviation (+ 170* per volt
for sine function):
3325A Function Phase Deviation
Sine + 8507
Square +425°
Triangle + 42,5°
+ Ramp + 85°
LITT MONE
Aa
ao
| - i
3-69. The numerical data of any parameter may be
changed by use of the MODIFY keys. First press the
prefix key of the parameter to be modified, placing the
information in the display. Next, press the I or [>
Key to move the bright digit cursor to the digit you want
to modify, Then pressthe © or © key momentarily
to increase or decrease the value of that digit by !. If the -
- modify key is held, the digit will continue to increment
or decrement after a slight delay. As the modified digit
passes 9 (incrementing) or 0 (decrementing) the digit to
its left will increment or decrement.
3-79. Store and Recall.
3-71. An entire program may be stored in any one of 10
registers by pressing the “STORE 0-9” key, then the
register number. This stores all the information that is
- IN the current program memory. Other programs may
‚then be entered, All stored information is lost when
- power is removed from these circuits by setting the
POWER switch to STBY or disconnecting ac power
from the instrument.
Operation
NOTE
Any phase information stored is invalid when
recalled because the instrument performs an
amplitude calibration on RECALL. Phase
relationship between the output signal and
the reference is not maintained when
AMPTD CAL occurs.
3-72. OPERATOR'S CHECKS.
3-73. The following checks provide the operator with a
means of determining whether the instrument is opera-
tional, They are not intended to verify any specifica-
tions. If the instrument fails any of these checks; it
should be referred to qualified service personnel for
repair.
3-74. Self Test,
3-75. Press the blue prefix key, then SELF TEST
(AMPTD CAL). All the front panel display and annun-
clator LED’s should light for approximately two
seconds, then the instrument performs an automatic
calibration of the sine, square, and triangle functions
and the display indicates momentarily whether each test:
passed or failed, The de offset is also checked in these
tests.
NOTE
If the display reads OSC FAIL at any time,
the frequency synthesis circuits are not func-
tioning properly. Refer the instrument to
qualified service personnel for repair.
3-76. Output Checks,
3-77. An oscilloscope (-hp- 1740A or equivalent} is re-
quired for these checks. Connect the 3325A output
through a 50-ohm feedthru termination {(-hp- 110480)
to the oscilloscope input {input dc coupled), or set the
1740A input switch to 50 ohms.
FUNCTIONS
a. Make the following 3325A keyboard selections:
FUNCTION ao Sine
FREQUENCY... 111111 1110 2 kHz
AMPLITUDE. 121111111110 10 V p-p
Vertical... LE ..5 V/div
Horizontal, ..... erro, 0.5 ms/div
Egger .. naaa Auto
¢. Adjust oscilloscope controls for a stable display,
~ which should show a sine wave approximately two divi-
sions peak-to-peak and one ¢ycle per division.
3-11
Operation
d. Select square wave, triangle, positive slope ramp,
and negative slope ramp and verify that each function
indicates the same frequency and peak-to-peak
amplitude. |
AMPLITUDE AND DC OFFSET
e. Set the 3325A as follows:
FUNCTION... Square
FREQUENCY. 2 kHz
AMPLITUDE..... 00 10 Y p-p
Г. Set the oscilloscope controls as follows:
Vertical... ia 2 V/div
Horizontal... .............. .. 0.3 ms/div
Tngger oo... LL LL еее, Auto
g. Oscilloscope display should show one square wave
per division, 5 divisions peak-to-peak vertical. This
checks the output with no attenuation. Actual display
will depend greatly upon the accuracy of the
oscilloscope amplifiers and display,
h. Change 3325A amplitude to 1 V p-p, and change
osciiloscope vertical to .2 V/div. Oscilloscope display
should again be 5 divisions peak-to-peak. This checks
the = 3 attenuator section.
1. Change 3325A amplitude to 360 mV p-p, and
change oscilloscope vertical to .! V/div. Oscilloscope
display should be 5 divisions peak-to-peak. This checks
the + 10 attenuator section.
j. Change 3325A amplitude to 50 mV p-p, and
change oscilloscope vertical to .01 V/div. The square
wave display should be 5 divisions peak-to-peak. This
checks the + 100 attenuator section. |
K. Press the 3325A SQUARE WAVYE FUNCTION:
ey to remove the square wave output, The indicator in
the DC OFFSET Entry key should light and the 3325A
display should show 0.0 mV.
|. Set the oscilloscope vertical control to 2 V/div.
‘Ground the input and set the trace to the center line, Set
input to de coupled.
m. Enter 5 V offset in the 3325A. The oscilloscope
trace should be 2.5 divisions above the center line, Enter
~ 5 V offset in the 3325A. The oscilloscope trace should
go to 2.5 divisions below the center line.
n. Enter 0 V offset in the 3325A. Trace should be on
the center line. |
FREQUENCY
o. Set the 3325A as follows:
FUNCTION... oo Sine
FREQUENCY. ................. 100 Hz
AMPLITUDE. ............... ... 10 V p-p
Model 3325 A
p. Set the oscilloscope controls as follows:
Vertical. aaa 2 V/div
Horizontal... | ms/div-
q. Oscilloscope display should show one cycle of sine -
wave, which should be free of any apparent ir-
regularities.
г. Enter 20 MHz in the 3325A. Change oscilloscope
horizontal to .05 us/div. Oscilloscope should display
one cycle of sine wave per division.
HIGH VOLTAGE OUTPUT (OPTION 002)
s. Remove the 50-ohm feedthru termination between
the 3325A output and the oscilloscope input. Press the
key in the lower right corner of the 3325A front panel to
select the High Voltage output. |
L. Sel the 3325A as follows:
FUNCTION ............ .... Sine
FREQUENCY... ...... ... 2 kHz
AMPLITUDE. ............... 40 V р-р
Мегиса!. ‚2... aa 10 V/div
Horizontal... 0 0.5 ms/diy
v. The oscilloscope display should show a sine wave
four divisions peak-to-peak, one cycle per division. This
checks the high voltage output amplifier.
3-78. OPERATOR'S MAINTENANCE.
3-79. Maintenance by the operator is limited to cleaning
or replacing the rear panel fan filter, or replacing the ac
fine fuse on the rear panel. Generally, if the ac line fuse
requires replacement there is a failure within the instru-
ment, which should be referred to qualified service per-
sonnel. Disconnect the ac line cord before replacing the
fuse. Be sure to use the correct replacement fuse:
Nominal Line Voltage | Fuse | -hp- Part No.
| A
0.5 A
2110-0001
2110-0012
100/120 Vv
220/240 V
3-80, The fan filter should be inspected frequently and
cieaned or replaced as necessary to allow free flow of
alr. To remove the filter, disconnect ac power from the
instrument and remove the four nuts that secure the
filter retainer. Remove the filter and wash thoroughly
‘with soapy water, rinse clean, and air dry,
3-81. HP-IB OPERATION.
3-82. The Model 3325A is remotely controlled by
means of the Hewlett-Packard Interface Bus (FIP-IB).
LA La
a ze.
LA
Model 3325A
.. The following information gives a general description of
/Æthe HP-IB and defines’ the terms, concepts, and
— messages used in an HP-IB system. It also lists the
capabilities and requirements for programming the
3325A. Program examples using a specific Hewlett-
Packard calculator as the system controller may be
found in the Supplemental Programming Information,
Appendix 3-A at the rear of this section.
NOTE
HP-IB is Hewlett-Packard Company’s
implementation of IEEE Standard 488-1978,
“Standard Digital Interface for Program-
mable Instrumentation.
3-83. General HP-IB Description.
3-84. The HP-IB is a parallel bus of 16 active signal
lines grouped into three sets according to function, to
interconnect up to 15 instruments. Figure 3-3 is a
diagram of the interface connections and bus structure.
—.. 3-85. Fight signal lines form the first set and are termed
- E ‘data’ lines. The data lines carry coded messages which
“ represent addresses, program data, measurements, and
status bytes. The same data lines are used for input and
Operation
output messages in bit-parallel, byte-serial form. Nor-
maily, a seven-bit ASCII code represents each piece
(byte) of data, leaving the eighth bit available for parity
checking.
3-86. Data transfer is controlled by means of an inter-
locked “handshake” technique which permits data
transfer (asynchronously) at the rate of the slowest
device participating in that particular conversation. The
three data byte transfer control lines which implement
the handshake form the second set of lines.
3-87. The remaining five general interface management
lines form the third set and are used in such ways as ac-
tivating all the connected devices at once, clearing the
interface, etc. Table 3-5 defines each of the management
lines,
3-88. Definition of HP-1B Terms and Concepts.
Byte - A unit of information consisting of eight binary
digits (bits). |
Device - Any unit that is compatible with the IEEE Stan-
dard 488-1978.
Device Dependent - !. An action a device performs in
response to information sent on the HP-IB. The action
is characteristic of an individual device and may vary
from device to device. 2. The data required to com-
municate with a particular device.
DEVICE A
Abie 16 talk digten,
and control
{e.0., Calculator]
DEVICE B
Able tor talk arf |
Tiana
leg, digitet voltmeter)
DEVICE C
Only abte 15 listen
DEVICE 5
Only able 10 talk
Data Bus
18 sigrial lines)
Date Byte Transfer
(HANDSHAKE? Lines
(3 signal lines
Cereal interface
- Management (CONTROL) Lines
signal
Emo...
Day
NAFO
NUAC
FC
ATN
SRQ
REN
EC
Figure 3-3; Interface Connections and Bus Structure.
Cperation
Table 3-5, General interface Management Lines,
Name Mnemonic Description
Attention ATN Enables a device to interpret
data on the bus as a controller
command {command model or
data transfer (Data Model,
Interface РС Initializes the HP-IR System to an
Ciear idle state (no activity on the
bus.)
Service SRG Alerts the controller to a need
Request for communication.
Remote REN Places instruments under re-
Enable mote program control.
End Or ЕО! indicates last data transmission
Identify during a data transfer sequence:
used with ATN to poli devices
for their status:
Operator - Thé person that operates either the system or
any device in the system.
Address - The characters sent by a controller to speci fy
which device will send information on the bus and
which device(s) will receive information. À device may
also have its address fixed so that it may only receive in-
formation (listen only) or only send information (talk.
oniy). |
Polling - Polling is a means by which a controller can
identify a device that needs interaction with it. The con-
troller may poll devices for their operational condition
one at a time, which is termed a serial poll, or as groups
of devices simultaneously, which is termed a parallel
poll.
3-89. Basic Device Communication Capability.
3-90, Devices which communicate along the interface
bus fall into three basic categories.
Talkers - Devices which send information on the bus
when they have been addressed.
Listeners - Devices
the bus when they have been addressed.
Controllers - Devices that can specify the talker and
listener(s) for an information transfer. The controller
can be an active controlier or a system controller. The
active controller is defined as the current controiling
device on the bus. The system controller can take con-
troi of the bus even if it is not the active controller. Fach
System can have only one system controller, even if
several controllers have system control capability.
3-81. Message Definitions.
3-92. Information is transferred on the HP-IB from
one device to one or more other devices in quantities
3-14
fhich receive information sent on
Model 3325A
called ““messages’’. Some of the messages consist of two
basic parts, the address portion and the information
portion. Others are general messages to all devices.
Messages can be classified into twelve types, which are
referred to as “meta messages”. These are defined in
Table 3-6. A block diagram presentation of meta
messages and their implementation will be found in Ap-
pendix A-3 at the rear of this section.
NOTE
The meta message in itself is not a pro-
gram code or an HP-1B command. It is only
intended as a too! to translate a program writ-
len as an algorithm into the controller's code:
3-93. 3325A Response to Messages.
3-94. The 3325A is capable of implementing only those
messages indicated in Table 3-7, In order for those
messages to be implemented, certain bus actions are re-
quired, which are shown in the Interface Functions col -
umn.
3-85. HP-IB Work Sheet.
3-96. A work sheet is provided at the end of this section
for listing the address and message capabilities of each
instrument in your HP-IB system. When this sheet is
filled out, it will provide a summary of the system
capabilities,
3-37. HP-IB Addressing.
3-98. Certain messages require that a specific talker and
listener be designated. Each instrument on the bus has.
its own distinctive listen and/or talk address which
distinguishes it from other devices. The 33235A receives
programming instructions when. addressed to listen,
When addressed to talk, it will respond to the instruc-
tions it received prior to being addressed to talk. such as
an interrogation or serial poli,
3-99, Addressing usually takes the form of “universal
unlisten, device talk, device(s) listen’’. The universal |
unlisten command removes all listeners from the bus,
allowing only the listener(s) designated oy the device(s)
listen parameter to receive information. The informa-
tion is sent by the talker designated by the device talk
parameter. The system controller may designate itself as
either talker or listener. |
3-100. 3325A REMOTE PROGRAMMING.
3-101. 3325A HP-IB Capabilities.
3-102. Table 3-8 lists the HP-IB capabilities of the 33254,
which are compatible with IEEE Standard 488-1978.
В
E a UE
Aa
TES
—
E
E
a
Lei
Lal
т.)
LE
wg
RB
ED.
Las Leg! 14.4 Lat
Model 3325A Operation
Table 3-6. Definition of Meta Messages.
Message Definition Message Definition
Data The actual information (binary
bytes)? which is sent from a
talker to one or more listeners,
The information or data can be in
a numeric form or a string of
characters.
Trigger The trigger message causes the
listening device{s! to perform a
device-dependent action.
Clear A clear message will cause a
deviceis} to return to a pre-
defined device-dependent state.
Remote The remote message causes the
listening deviceís) to switch
from local front panel control,
to remote program controf. This
message remains in effect so
that devices subseguently ad-
dressed to listen will go into
remote operation,
Local This message clears the remote
message from the listening de-
vicefs! and returns the device(s}
to local front panei control,
Local Lockout The local lockout message 15
implemented to prevent the de-
vice operator from manually in-
hibiting remote program control,
Clear Lockout and This message causes all devices
Set Local to be removed from the local
lockout mode and revert to focal
it will aiso clear the remote mes-
sage for all devices,
Require Service A device can send this mes-
sage at any time to signify that
it needs some type of inter
action with the controller. The
message is cleared by the de-
vice's status byte message !f it
no longer requires service.
Status Byie A byte that represents the status
of a single device. One bit indi-
cates whether the device sent
the required service message
and the remaining 7 bits indi
cate operational conditions de-
fined by the device, This byte
is sent from the talking device
in response ta a Serial Poli”
operation performed by a con-
trofler:
Status Bit Á byte that represents the opera-
tional conditions of a group of
devices on the bus. Each de-
vice responds on à particular bit
of the byte thus identifying a
device dependent condition. This
bit is typically sent by devices
In response to a parallel poll
operation.
The status bit message can also
be used by a controller to speci-
fy the particular bit and logic
level that a device will respond
with when a parallel poll oper-
ation ts performed, Thus, more
than one device may respond on
the same bit.
Pass Control This message transfers the bus
Management responsibilities
from the active controller to
another controlier,
Abort | The system controller sends the
abort message to uncondition-
ally assume control of the bus
from the active controller. The
message will terminate all bus
communications but does not
implement the clear message.
3-183. Developing an HP-1B Program.
3-104. Basically, the 3325A is programmed remotely in
the same manner as it is programmed manually. The se-
quence in which the various parameters are pro-
grammed is not important. At the end of this section
(ID there is a summary of the HP-IB Programming
Codes. This chart may be removed from the manual
and/or copied to be used as a programming reference.
NOTE
It may be necessary to refer to some para-
graphs on manual operation Jor descriptions
of certain signals and requirements.
3-105. Several steps are needed to develop an HP-IB
program.
a. Completely define the operation(s) the system is
required to perform. |
b. Write the program in flowchart or algorithm
form. (An algorithm may be defined as a fixed step-by-
step procedure for finding a solution to a problem.) Use
the key words for meta messages shown in Table 3-6 in
developing the program, The twelve key words are
repeated here for reference.
Data
“Trigger
Clear
Remote
Local
Local Lockout
Clear Lockout and Set Local
Require Service
3-15
Operation
16
Table 3-7. 33254 Implementation of Messages.
Model 3325A
Interface Functions” * ;
Message Implementation” Sender Receiver 3325A Response
Data SR | T, SH 1”, AH Will send or receive as
instructed
Trigger NA T, SH LR AH None
С1еаг-12 ОВ C, SH ОС“ Ц АН Device Clear sets 3325A
Clear All В C, SH ОС“, АН to mitial turn-on condi
tions. See Para, 3-8.
Remote A | Co, SH RLY, L, AH Goes to Remote. Can be
RL, AH set to Local by LOCAL
Key,
Loca! R | C, SH RI L AH Goes to Local.
Locai Lockout С, SH RL, AH Goes to Remote. Cannot
be set to Local by LOCAL
Key. .
Clear Lockout and ОВ RL Goes to Local from Local
Set Local С, | Lockout. |
Require Service 5 SAA с Sets SRO True.
Status Byte 5 SR", T, SH LO. AH Sends byte which indi
cates if service required
and reason.
Status Bit NA ppn С None
Pass Control NA Ca, SH Ce, T, AH None
Abort В. С. Unaddress
* 5 = Send Only
R= Receive Only
SR = Send and Receive
NA = Not Applicable
**5H = Source Handshake
АН = Acceptor Handshake
T= Talker {includes TE = Extended Talker
|. = Listener {includes LE = Extended Listener}
SH = Service Request
RL= Remote/Local
PP = Parallel Poll
BC = Device Clear
DT = Device Trigger
C= Any Controller
Cy = A specific controller {for example, Cj, Ca)
C.= The System Controller.
X= Indicates message can be sent to/by one or more:
devices simultaneousiy
Status Byte
*Status Bit
*Pass Control
Abort
*Not implemented by the 3325A
NOTE
The meta message in itself is not a program
code or an HP-IB command. It is only in-
tended as a fool to translate a program
written as an algorithm into the controller's.
code.
Table 3-8, Interface Functions.
Code
Function
SH
T6
pro
La
Sar
RL]
DC
AMT
PPO
DTO
£1
Source handshake capability
Acceptor handshake capability
Basic talker; Serial Poll; Unaddressed to talk if
addressed to listen
Basic listener; Listen Only; Unaddressed to
listen if addressed to talk
Service Reguest capability
Remote/l.ocal capability
No parallel poll capability
Device clear capability.
No device trigger capability
No controller capability
Open collector bus drivers
a .
Ea
ET
[A
{
я
25
4
Feo
1.01
LE
ms im 1.5. “BH; ran LEA 1.81
Model 3325A
c. Define the operation in program codes that the in-
9 strument can use. Each instrument has its own set of
program codes which are ASCII characters. The 3325A
program codes are shown beginning with Paragraph
3-120 or Table 3-9. |
4. Convert the program into the controller's
language. The conversion information is supplied with
each controller, For example, the -hp- 9825 À Calculator
Extended 1/0 Manual provides a chart for program
code conversion.
NOTE
Examples for controlling the 33254 with a
specific Hewlett-Packard calculator are pro-
vided in the Supplemental Programming In-
formation, Appendix B-3 at the rear of this
section.
3-106. Block diagrams and explanations of the meta
messages that apply to the 3325A are shown in Appen-
dix A-3 at the rear of this section.
3-107. Universal and Addressed Commands.
3-108. The 3325A will respond to the following univer-
sal and addressed commands, which are sent in the com-
> mand mode (ATN true).
Mnemonic Command
Universal:
*DCL Device Clear DC4
LLO Local Lockout DCI
MLA My Listen Address (selectable)
MTA My Talk Address (selectable)
SPD Serial Poll Disable EM
SPE Senal Poll Enable CAN
UNE Unlisten - В ?
UNT Untalk | —
Addressed: |
— CTL Go to Local | SOH
*SDC Selected Device Clear ~~ EOT
*DCL and SDC commands set the 3325A to its initial
turn-on conditions {see Paragraph 3-8) and cause an
AMPTD CAL operation. Any data in the HP-IB input
— buffer 15 lost. The storage registers, SRQ masking, and
the status byte are not affected.
3-109. Placing the 33254 in Remote.
3-110. The 3325A will go to Remote when ATN is true,
æ@, REN is true, and it receives its listen address.
3.111. The 3325A Address.
ASCII Code
Operation
3-112, The 3325A address is normally set at the factory
to:
1 ASCII | 5-Bit {5-Bit Octal Equivalent)
Character Octal Decimal Hexadecimal
Listen } 21 £7 1}
Talk O 21° 17 |
The 3325A can be made to display its address in decimal
code by pressing the blue e prefix key and the BUS ADRS
(L OCAL) key.
NOTES
I. All programming is shown in ASCH |
code.
2. Fable 3-9 is a summary of the 33254 pro-
gram data messages and program times.
Table 3-10 lists program codes in binary,
octal, decimal, and hexadecimal. At the end
Of this section (IT) there is also a summary of
the HP-IB programming codes. This chart
may be removed from the manual and/or
copied to be used as a programming
reference..
3. The following front panel key actions can-
not be remotely programmed.
Modify group
Sweep bandwidth x 2
Sweep bandwidth — 2
Set sweep center frequen y to marker fre-
quency
Display bus address
Clear display
4. The 33254 must be set to REMOTE and
addressed to LISTEN before it will accept
device dependent data messages. |
3-113. 33754 Data Message Formats.
3-114. The following are valid programming Strings
(data messages) for the 3325A:-
Mnemonic, Data, Delimiter, EOS
Mnemonic, Data, EOS
“Mnemonic, EOS
I, Mnemonic, EOS
Where lis the ASCH character ! and ÉOS is the end-of-
string character, which is required for Data Transfer.
Mode 2 (see following paragraphs).-Valid EOS:
characters are: |
LF = Line Feed = 12 octal
=. Asterisk = 52 octal
3-17.
Cperation
Table 3-2. Summary of 3325A Programming (ASCII Characters)”
Model 3325A
Mnemonics
ASCH
Parameter or ASCH
Operation Code Data Code Delimiters Approximate Programming Time *
Data Transfer Mode NA.
Data Mode 1 = MU 1 МО = 4.5 ms
Data Mode 2 = MD 2
Function = FU (= DC Only NA FU= 1500 ms
1 = Sine
2 = Square
3= Triangle
4= Positive Ramp
5= Negative Ramp
Frequency = FR < 11 Digits HZ = Hertz FR = 7,0 ms
and Decimal KH = Kilohertz Fach digit or decimai=2.8 ms
МНН = Megahertz HZ, KH,.or MH=: 12,5 ms
Amplitude = AM < 4 Digits VO = Volts {p-p} AM =6.8 ms
and Decimai. Also MY = Millivoits {р-р} Each digit, decima! or decimai= 2.8 ms -
— sign if negative VR = Volts rms VO or MY = 90 ms
dBm. + sign is val~- | MR=Miliivotts ms VR or MR= 130 ms
id but not required, | DB=dBm — DB=250 ms
DC Offset = OF < 4 Digits and МО = Volts ОР = 6.8 ms
Decimal. Also — 1 MV = Millivoits Each digit, decimal, or — sign=2.8 ms
sign if negative de VO or MV=82 ms —
offset. + sign is
valid but not
required.
Phase = PH = 4 Digits DE = Degrees PH=5 ms; DE=28 ms
- minus sign . Each digit and — sign= 2,8 ms
Sweep Start Frequency ST = 11 Digits HZ = Hertz ST, SP, or MF=7.0 ms
Sweep Stop Frequency =P and Decimal KH = Kilohertz Each digit or decimal= 2.8 ms
Sweep Marker Frequency = MF Mb = Megahertz MZ, KH, or MH=10.3 ms
Sweep Time = TI < 4 Digits SE = Seconds TI=5.5 ms; SE=7.0 ms
and Decimal : Fach digit and decimai= 2.8 ms
Sweep Mode = SIM NA: SM=4.5 ms
Linear 1
Logarithmic 2
Rear or Front Panel Output = RF | NA RF=44.5 ms
Front Panel 1
— Rear Panel 2
Store Program SA 1 Digit, 0-9 NA SR=11 ms;
Recall Program = ВЕ RE=1700 ms
Execution Functions NA NA
Assign Zero Phase = AP AP=5.2 ms
Perform Auto-Cal = AC AC= 1500 ms
Start Single Sweep = 55 S8=300 ms
Start Continuous Sweep = 5С SC=300 ms
Perform Self-Test = TE NA NA TE= 10,000 ms
interrogate Program Error = {ER NA NA - IER=11.65 ms
Interrogate Entry Parameters NA NA. a
Frequency = {FR IFR= 10 ms
Amplitude = ТАМ АМ = 3.8 ms
Offset = ЮЕ IOF=9,8 ms
Phase = [PH PH=8 ms
‘Sweep Start Frequency ST IST=10 ms
Sweep Stop Frequency = |SP SP= 10 ms
Sweeap Marker Frequency = IMF" IMF=10 ms
Sweep Time = iT} iTi=8.5 ms
Interrogate Function = FU NA NA IFU= 1603 ms
Mask Service Requests = MS See Para. NA MS=4.5 ms.
= 3-144
Binary (ON/OFF) Functions | NA Н\ = 48 ms
High Voltage Output = HV OFF = 0 | МА = 7.0 ms
Amplitude Modulation = MÁ ОМ = 1 МР = 7.0 ms
Phase Modulation = MP
3-18
** See Note 2 following Paragraph 3-112.
* Program times are in addition to the data transfer time of 225 to 250 us per byte.
es.
EEE
e DAL
tal Lai Lai Ld Ld Ga
Li Las a
LE LE LA LES LAN LE LES
EMI LEI LEAL EJ 023821 LE)
Model 3325A
Table 3-10. Programming Codes.
105
69
ASCH Binary Octal Decimal Hexadecimal
instruction - Characters Code Code Code Code
Entry
Frequency E 1000110 106 70 48
: R 1010010 122 . 82 52
Amplitude A 1000001 101 55 41
MA 1001101 115 77 45
Offset O 1001111 117 79 4F
OF 1000110 106 70 45
Phase Р 10100060 120 80 50
H 1001000 110 72 48
Sween a
Start Frequency - S 1010011 123 83 53
F 1010100 124 84 54
Stop Frequency Ss 1010011 123 83 53
р 1010900 120 80 50
Marker Frequency M 1007101 115 77 40
Е 1000110 106 70 46
Time T 1010196 124 84 54
| 1001001 117 73 49
Start Continuous S 10100101 123 33 53
С 1000011 103 67 43
Start Single {must be sent twice) S 1010011 123 83 . 53
` 5 1010011 123. 83 53
Sweep Mode 5 010011 123 83 53
AA 00171101 115 77 40
Numerical Data |
O O 01 10000 060 48 30
1 1 0110001 061 49 31
2 2 0110010 082 50 32
3 3 0110011 083 51 33
4 4 01710100 064 52 34
5 5 0110101 065 53 35
6 6 01101710 066 54 36,
7 7 0110171 1 087 55 37
8 8 0111000 070 56 38
3 g 0111001 071 57 - 38
(decimai - 0101110 056 46 ZE
om iminus} — C1071 101 055 45 2D
Data Suffix (Delimiter)
Hertz AR . 1209010086 110 72 48
2 1011010 + 132 30 БА
Kilohertz K “1001011 113 75 4B
H 1001000 110 72 48
Megahertz M 1001101 115 77 40
о H 1001000- 110 72 4 4
Volts (р-р ог ас) \/ 1010110 126 86 56
o 10901111 117 79 4F
Millivoits {p-p er del AA 100 7.101 115 77 47
\/ 1010110 126 86 56
Voits rms V 1010110 126 86 - 56.
R 1010010 | 122 82 52
Millivolts rms M 1001101 115 77 40
= В 1010010 122 82. . 52
dBm D 1000100 104 . 68 44
B TONTO : 1027 66 47
Degrees D 1000100 104 58 44
E 100001 105 69 45
Seconds S 1010011 123 83 53
E 1000101 105 69 45
Store S 1010011 123 83 53
В 1010010 122 82 52
Recall R 10160010 122 82 „52
E 1000101 45
Operation
Operation
Table 3-10. Programming Codes (Cont'd).
Model 3325A.
ASCII Binary ‚ Оста! Decimal Hexadecimal
Instruction Characiers Code Code Code Code
High Voltage Output H 1001000 110 72: 48
\/ 1010110 126 86 . 56
Modulation-Amplitude M 1001101 115 77 40
A 1000001 101 55 41
Modulation-Phase MA 1001101 115 77 40
Р 1010000 120 80 50
Rear or Front Output R 1010010 122 82 . 52
F 10001170 106 70 46
Data Transter Mode M 100177017 -} 115 77 40
D 1000100 104 68 44
Assign Zero Phase Reference A 1000001 107 65 41
Р 1010000 120 80 50
Perform Auto Cal A 1000001 101 65 41
с 1009011 103 67 43.
Perform Self Test T 1010100 124 84 54
E 1000101 105 89 45
Mask SRO M 10011013 115. 77 40
5 10100113 123 83 53
Interrogate {Parameter} - | 1001001 111 73 49
Interrogate Error | 1001001 111 73 49
E 1000101 105 69 45
R 1010010 122 82 52
EQS {End of String)
Line Feed LF 0001010 12 q A
Asterisk + 0101010 52 42 ЗА
All spaces (40 octal), carriage returns {15 octal), com-
mas (54 octal), and ali lower case alphabetics are ig-
nored by the 3325A.
NOTE
A program string may program one para-
meter or all parameters. For example, the
string “FUZ2FRIOKHAM3V0” programs the
following:
FU2 = Square wave function
FRIOKH = 10 kHz
AM3VO = 3 К р-р
The EOS character should follow the com-
plete string, or a maximum of 48 characters
(see Paragraphs 3-115 through 3-118).
3-115. Data Transfer Mode,
3-116. The 3325A accepts data from the HP-IB in
either of two modes. If speed of communication is a
critical factor on your HP-IB system, Mode 2 is prefer-
rable. The characteristics of the two modes are:
Data Mode 1. The 3325A turns on in Data
Mode !. In this mode, each device dependent
character (byte) is processed when received.
3-20
3-117. While the 3325A is processing data it will accept
and respond to universal commands. For this reason,
when operating in Mode 2, the controller can send a
program string (48 characters or less) to the 3325A, and
Line feeds and Asterisks (EOS characters)
are ignored. No other device dependent data
communications are permitted on the bus
until the entire 3325A program string has
been accepted and all but the last character
processed.
Data Mode 2. Device dependent characters
are accepted and stored in an internal buffer
and not processed until the EOS character is
received or the buffer is filled (48 bytes). .
Consequently, other communications on the
‘bus are permitted after the program string
has been accepted (at the rate of approx-
imately 150 to 200 microseconds per
character). If the program string contains 48.
characters or more, the 3325A will hold up
the bus while it processes the 48 characters
before accepting and storing the rest of the
string. Because the instrument turns on in
Data Mode 1, Mode 2 must be programmed:
remotely. If will then remain in Mode 2 until.
Mode | is programmed or untit the POWER
switch 1s set to STBY,
Lad
A Ut
LES BJ UB BO LE UNO
AI LB LAO ABI AB! BRS LRU LM LE
Model 3325 A
while this data is being processed the controller can
unaddress the 3325A to listen and then communicate
with another device. However, if the string 1s more than
48 characters, the bus will be held up until the first 48
characters have been processed and the remaining
characters accepted. In order for the bus to be used dur-
ing 3325A processing time for communication between
other devices, a program string greater than 48
characters shouid be divided and an EOS character sent
after (or at a convenient place before) the 48th byte, The
remaining program can then constitute a second string,
While the 3325A is processing input information, a
“Busy” flag is set in the status byte (see Paragraph
3-136). This flag can be used to determine when the
3325A has finished processing,
— NOTE
The 3325A will handshake bus communica-
tions even though the POWER switch is set.
lo STBY. This will not interfere with the
operation of the bus unless il was set to
STBY while addressed to talk. Before it is set
io STBY, make sure it is not addressed to
talk, or else disconnect the HP-IB cable
from the 3325A. The addressed to talk con-
dition can be cleared by an [FC command,
even when the 33254 is in Standby.
% 3-118. Programming Data Transfer Mode.
-3-119. Instructions for programming Data Transfer
Mode are included in Paragraph 3-126.
© 3-120. Programming Entry Parameters. -
3-121, The 3325A entry parameters are:
Frequency.
Amplitude
Offset
Phase
Sweep Start Frequency
Sweep Stop Frequency
Sweep Marker Frequency
Sweep Time
The programming syntax. for these parameters is:
Mnemonic, Data, Delimiter, EOS
NOTE
All program codes are shown in ASCII
characters. |
Valid mnemonics:
. FR = Frequency
AM = Amplitude
OF = Offset |
Operation
PH = Phase
ST = Sweep Start Frequency
SP = Sweep Stop Frequency
MF = Sweep Marker Frequency
TI = Sweep Time
Valid data:
0 thru 9 = ASCII numerics (if too many
digits are sent, the extra digits will be
ignored or rounded)
+ = ASCII plus sign (plus sign is accepted
but not required)
— = ASCII minus sign (minus sign will be ig-
nored if sent for parameters that cannot be
negative)
, = ASCII decimal (floating decimal entries
not valid)
Valid delimiters:
HZ = Hertz
KH = Kilohertz
MH = Megahertz
VO = Volts (peak-to-peak or dc)
MY = Millivolts (peak-to-peak or dc)
VR = Volts rms
MR = Millivolts rms
DB = dBm
DE Degrees
SE = Seconds
NOTE
When operating in Data Mode 1, an EOS -
character is not reguired. When in Mode 2,
the EOS character should not be sent until
the end of the program string (or after 48
bytes; see Paragraph 3-117).
3-122. Programming Waveform Function.
3-123. The selectable functions are:
DC only.
Sine wave
Square wave
Triangle wave
Positive Slope Ramp
Negative Slope Ramp
The programming syntax for selecting function 187.
Mnemonic, Data, EQS
Valid mnemonic:
FU = Function.
3-21
Operation
Valid data:
Function off {dc only)
Positive Slope Ramp
Negative Slope Ramp
Ho
Й =
1 = Sine
2 = Square
3 = Triangle
4
5
3-124. Programming Binary (On or Off) Functions.
3-125. The programmable binary functions are:
High Voltage Output (Option 002)
Amplitude Modulation
Phase Modulation
The programming syntax for binary functions is:
Mnemonic, Data, FOS
Valid mnemonics:
HY = High Voltage Output ar the 3325A receives
the HV mnemonic but does not have the high
voltage option, SRQ (if enabled) and an error
code will be generated. See Paragraph 3-134.)
MA = Modulation — Amplitude
MP = Modulation — Phase
Valid data:
ÿ = Off
= Оп
МОТЕ
The rear panel signal output is inactive (no
internal signal connection} if the instrument
has the High Voltage Output Option 002 in-
stalled. Instructions are given in the
Operating and Service Manual, Section VIII,
Service Group M, for activating the rear
panel signal output in one of two ways: 1)
Placing the standard/high voltage output on
the rear panel only, disconnecting the front
- panel signal output, or 2) Disabling the high
voltage oulput and enabling the standard
Jront/rear output configuration.
3126. Programming Selection Functions.
NOTE
The selection functions are similar to binary
Junctions, but instead of ON or OFF states,
selection is made between two mutually ex-
clusive operations. |
Li
e
ra
Model 3325A
3-127. The programmable selection functions are;
Rear Output/Front Output |
Linear Sweep/ Logarithmic Sweep
Data Transfer Mode
The programming syntax for the selection functions is:
Mnemonic, Data, EOS
Valid mnemonics:
RF = Rear or Front Output
SM = Sweep Mode
MD = Data Transfer Mode
— Valid data for RF is:
l = Select Rear Output
2 = Select Front Output Af the 3325A receives the
RF mnemonic but does not have rear output
capability (Option 002, for example) SRQ Gf
enabled) and an error code will be generated.
See Paragraph 3-134.) |
Valid data for SM is:
= Linear Sweep {The 3325A turns on in Linear
Sweep function. This function need not be pro-
grammed except to change from Linear to Log
Sweep or to return to Linear.) |
= Logarithmic Sweep
Valid data for MD is:
I = Data Mode ! (The 3325A turns on in Data
Mode 1. This function need not be programmed
, it is desired to remain in Data Mode 1: J
=. Data Mode 2
3-128. Programming Execution Functions.
3-129. The programmable execution functions are:
Assign Zero Phase Reference
Perform Amplitude Calibration
Start Single Sweep
Start Continuous Sweep:
Perform Self Test.
The programming syntax for execution functions is:
Mnemonic, EOS
Valid mnemonics: -
AP = Assign Zero Phase Reference
AC = Perform Amplitude Calibration
55 = Start Single Sweep
BE.
Delimiter
Model 3325A
SC = Start Continuous Sweep
TE = Perform Self Test
NOTES
1. The Start Single mnemonic must be sent
twice (8885S). The first SS sets the output
fand display} to the start frequency, and the
second SS starts the sweep.
2. While the 33254 is in Continuous Sweep
mode, if it receives the mnemonics SC, S8,
FR, PH, AC, AP, or TE, it will stop sweep-
ing. It must receive SC again in order to
resume continuous sweeping; or if a single
sweep is to be programmed, SSSS is re-
quired.
3. The “Busy” flag (Dit 7 in the status byte,
see Paragraph 3-138) will be “I” for the
duration of a Self Test operation. After Self
Test, the 3325A returns to the previously
programmed conditions, except that if a
sweep was in progress the sweep will remain
stopped.
3-130. Programming Amplitude Units Conversion,
a 3-131. The programming syntax for converting ampli-
tude units (Yp-p, Vrms, dBm) is:
Mnemonic, Delimiter, EOS
Mnemonic = AM = Amplitude
= The units to which you want to convert:
VO = Vp-p
МУ = тУр-р
VR = Vrms
MR = mVrms
DB = . dBm
Exampie: If amplitude was programmed in Vp-p, it may
be converted to dBm by programming “AMDB”. If
amplitude was the last parameter programmed and is
shown in the display, only the delimiter “DB” needs to
de. programmed. 3
3-132. Programming Storage Registers.
3-133. The data that will be stored includes the current -
program of Entry Parameters, Function (Waveform),
Binary Functions, and Selection Functions. The storage
register functions are:
Store Data in Register N
Recall Data from Register N
Operation
The programming syntax for storage register functions
15; |
‘Mnemonic, Data, EOS
Valid mnemonics:
SR = Store
RE = Recall
Valid data:
0 thru 9 = ASCII numerics specifying register
number
NOTES
1. (7 по data has been stored in a register,
the recall command for that register will be
ignored.
2. An amplitude calibration is performed
when a register is recalled.
3. The numeric value for the phase is stored,
but. the phase of the output is not changed
when the register is recalled. (Phase may
need (0 be reprogrammed.)
4. DCL (Device Clear) and SDC (Selected
Device Clear) commands do not affect the
Storage registers.
3-134. Service Requests.
3-135. The 3325A will set the SRQ line true for any of
the following reasons, if enabled by the SRQ mask (see
Paragraph 3-144):
Program String Error
Sweep Started or Sweep Stopped
System Failure (Possible component problem)
Failed Self Test
Failed Amplitude Calibration
External Reference Unlocked
Main Oscillator Unlocked -
3-136. Serial Poll:
3-137. When the system controller determines that the
SRQ line is true, it may conduct either a Serial Poll or a
Parailel Poll to determine which device(s) initiated the
Service Request, and the reason(s) for the request. The.
3325A responds to a Serial Poll, which is conducted in.
the following manner:
Controller places ATN true (command mode)
Controller sends Serial Poll Enable (SPE) on lines
PIO1-8 (ASCII CAN, binary code x 0011000) ;
бл
1
fd
Las
Operation
Controller sends 3325A Talk address,
Listen address
Controiler places ATN false (data mode)
3325A responds by sending status byte on DIO1-8
Controller places ATN true (after each device has
been polled)
Controller sends Serial Poll Disable (SPD) on
DIOI!-8 (ASCII EM, binary code x 0011001)
controiler
Serial Poll Disable clears the SRQ message originated by
the 3325A, resetting bits ÿ through 3 and bit 6 in the
status: byte.
NOTE
Some of the above Serial Poll operations are
performed automatically by some con-
[rollers in response fo certain programming
statements. Refer to the programming in-
structions for your particular controller.
3-138. Status Byte.
3-139. A status byte consists of one 8-bit byte on the
HP-IB data lines. A “1” in bit 6 indicates that the
3325A did request service (placed SRO true), anda “9”
in bit 6 indicates that it did not request service. The
- 3325A status byte contains the following information:
76543216 Status byte bits
(87 654321 DIO lines)
FREXxSSSS F= Flag; R= Request Service:
| S = Status |
| 1] = Program String Error
| = Sweep Stopped
Pe | = Sweep Started
= System Failure
on component failure),
includes:
Failed Self Test
Failed Amptd Cal
Ext Ref Uniocked
Main Osc Unlocked:
Sweep Flag. 1 = Sweep in Progress.
Does not cause SRQ.
ROS Message. 1= Service Request.
Busy Flag. |
Does not cause SRO.
3-140. Busy Flag.
3-141.
the 3325A 1s processing data. This bit can be monitored
3.24
Model 3325A
by the controller to determine s when the 3325A is ready
for more data.
3-142. Sweep Flag.
© 3-143. The Sweep Flag (bit 5 of the status byte) is high |
(1) while the 3325A is in the process of sweeping. This
bit can be monitored by the controller to determine
when the end of a sweep occurs. -
3-144. Masking or Enabling Service Requests.
3-145. Bits 3 through @ in the status byte can be masked
so that the corresponding conditions will not cause a
service request. However, a 1” will still appear in the
status byte if the condition exists, and can be cleared
only by a serial poll. At instrument turn-on all SRQ con-
ditions are masked. The programming syntax for mask-
ing and enabling SRQ conditions is:
Mnemonic, Data, EOS
Mnemonic = MS
Valid Data is shown in Table 3-11.
3-146. Interrogating Program Errors.
3-147, The “Program Error” service request may result
= 3325A busy processing data. -
The Busy Flag (status byte bit 7) is high (1) while
from the foilowing Errors:
ASCII |
Numeric Error
1 Entry parameter out of bounds (for exam-
| ple, Freq = 61 MHz)
2 Invalid delimiter
3 Frequency too large for function (for ex-
ample, Function = Triangle, Freq
- 2 11 kHz)
4 Sweep time too small or too large
3 Offset incompatible with amplitude, or |
amplitude incompatible with offset
6 Sweep frequency too large for function;
Sweep bandwidth too small; Start fre-
quency too small {log sweep); Start fre-
quency greater than stop frequency (log
sweep)
7 Unrecognizable mnemonic received
8 Unrecognizable data character received
9 Option does not exist (High Voltage or |
Rear/Front) |
Bh
i
va
Bi
X iif ©
PE
ao
3
3 — Model 3325A Operation
Table 3-11. SRO Mask/Enable Data.
A
error that occurred (see list above).
if no error occurred, the code returned is 8. When more
than one error has occurred, only the code for the first
error will be returned. After interrogation, the error
code is set to zero until the next error occurs.
3-148. interrogating Entry Parameters. —_.
3-149, Each entry parameter can be interrogated by the
controller to determine its value. The programming syn-
tax for interrogating entry parameters is:
I, Mnemonic, EOI
= the ASCII character I and indicates interrogation
desired
Valid mnemonics (parameter to be interrogated):
FR = Frequency
AM = Amplitude
OF = Offset
System Sweep Sweep Program -
_- ASCH Bits Fail Start — Stop Error
3 ~ Character 3 thru О Bit 3 Bit 2 Bit 1 Bit O
= (a 0000 Mask - Mask Mask Mask
Ts A 0901 Mask Mask Mask — Enable
; В 0010 Mask Mask Enable Mask
к с 0071 Mask Mask Enable Enable
I D 0100 Mask . Enable Mask Mask
- E 0101 Mask Enable Mask Enable
3 F 0110 Mask Enable Enabie Mask
e: 0131 Mask Enable Enable Enable
a HH 1000 Fnable Mask Mask Mask
es | 1001 Enable - Mask Mask Enable
м 1010 Enable Mask Friable Mask
‚= К 1011 Enable Mask Enable Enable
Ш | 1100 Enable Enable Mask Mask
_ MA 1101 Enable Enable Mask Enable
3 N 11140 crnabie Enable Enable Mask
O 1177 Enable Enable Enable Enable
3 “initial turn-on conditions
3 The programming syntax for interrogating error is: PH = Phase
ST = Sweep Start Frequency
terrogated
Data = 11 digits of ASCII numerics equal to the value
of the specified parameter plus decimal point. If the
- Mnemonic, EOS SP = Sweep Stop Frequency
_ | MF = Sweep Marker Frequency
| Mnemonic = IER’ TI = Sweep Time
À > After receiving IER, the 3325A will send back the After receiving a parameter interrogation, the 3325A
— Wrollowing the next time it is addressed to talk: will send back the following the next time it is addressed
a | | | to talk: |
Ш Mnemonic, Data, CR (ASCII carriage return), LF
À & EOI (ASCII line feed with EOI sent simuitane- . Mnemonic, Data, Delimiter, CR (ASCH Carriage -
= ously) Return), LF & EOI (ASCII Line Feed with EOI
. sent simultaneously)
я Mnemonic = ER
_ Mnemonic = The mnemonic of the parameter being in-
4 Data = The ASCII numeric corresponding to the first a. В
€
я
value is negative, the first digit is a minus sign.
Delimiter = The data suffix mnemonic denoting the
parameter value (see Paragraph 3-120)
NOTE
Only one parameter can be interrogared by
each interrogation message.
3-150. Interrogating Function (Waveform).
3-151. The 3325A may be interrogated by the controller.
to determine the current function programmed. The
programming syntax for interrogating function is:
i, Mnemonic, EQS
I = The ASCII character I and indicates interrogation
desired
3-25
Operation
Mnemonic = FU = Function
After receiving IFU, the 3325A will send back the
following the next time it is addressed to talk:
Mnemonic, Data, CR (ASCII Carriage Return), LF
dz EOL (ASCII Line Feed with EOI sent simul-
taneously)
Mnemonic = FU
Data = One ASCH numeric indicating function as
follows:
0 = DC Only (Offset)
i = Sine
2 = Square
3 = Triangle |
4 = Positive Slope Ramp
5 = Negative Slope Ramp
3-152. Interrogating Miscellaneous Parameters.
3-153. The other parameters shown below can be inter-
rogated by the controller to determine their present
state. The programming syntax is:
[, Mnemonic, EQS
I = The ASCII character I and indicates interrogation
desired
Valid Mnemonics (parameter to be interrogated):
SM = Sweep Mode
КР = Rear or Front Output*
HY = High Voltage Output*
MA = Amplitude Modulation
MP = Phase Modulation
Model 3325A
*Rear/ Front output and High Voltage Output (Option
002) are mutually exclusive. If either RF or HV is inter- 8
rogated, the mnemonic and data returned will indicate
the actual capability of the instrument and its state. For
example, if the High Voltage option is present and OFF,
HVE will be returned in response to either IRF or IHV.
After receiving an interrogation, the 3325A will send
back the following the next time it is addressed to talk:
Mnemonic, Data, CR (ASCII Carriage Return), LF
& EOI (ASCII Line Feed with EOI sent simul-
taneously)
‘Mnemonic = The mnemonic of the parameter being in-
terrogated
Data = 1 ASCIH digit specifying the state of the
parameter. This is the same digit that would be used to
program the parameter to that state.
3-154, Using the interrogate Capability.
3-155. When the 3325A is changed from local to remote
operation or vice versa, it retains its currently pro-
grammed state until this program is changed by the
operator or controller. This feature can be useful in set-
ting up a program string for HP-IB programming. For
example, using the 3325A in local, the operator can
determine experimentally the parameters required to
can be placed in remote and its function and entry
parameters interrogated. Each item can be stored by the
controller and then combined to form the 3325A pro-
gram string to be incorporated into the total HP-IB pro-
gram.
„те? Te,
e a
A
E
ov
— perform the operation or test desired. Then the 3325A
i
-
- Model 33254 | Operation
3
3 „=. 3-156. 3325A Programming Procedure,
8, |
4 3-157. The following examples are given to illustrate
- the basic procedure for developing a program. Program -
q examples are shown in Appendix B-3, using the -hp-
- Model 9825A Calculator as the system controller. Ap-
2 pendix A-3 diagrams the required messages.
” я Address Controller: To
~ Example 1: | | . Talk, 3325A To Listen
Y Address controller to talk, |
3325A to listen
Send Program Data
Send Program Data
Example 2: Add Cont oller T
n r o
Address controller to talk, Talk 3325A To Listen
3325A to listen
MEL?
Send Program Data
48 Check for Require Service Send Program Data
3 В message
; ‚ If yes, determine reason
from 3325A Status Byte |
| | NO | > YES
Take corrective action if pom equi _
Ш necessary ?
;
| | Determine Reason for
СВО (Status Byte!
ls
Corrective YES
Action
Needed
?
NO
| Continue | Corrective Action
В Го]
3-27/3-28
Model 3325A | | Appendix A
3. A
О APPENDIX A
= SECTION Ii
N META MESSAGES
= BLOCK DIAGRAMMED
3
4
3 DATA MESSAGE — The Data message is the actual information that is sent from a talker
to one or more listeners. This action requires the controiler to first enter the command mode
E to set up the taiker and listener(s) for the transfer of data. The information 1s then trans-
ferred in the data mode.
=
COMMAND MODE
— ! ADDRESSING — 7—7)
3 DIG 1-8 |
DATA = AT UNLISTEN CONTROLLER TALK DATA MODE
077g
OR ATN BIG 1-8
| (FALSE! DEVICE DEPENDENT
DEVICE TALK |
CONTROLLER LISTER
ar Un
LAS
OR
|. DEVICE TALK
ANOTHER DEVICE LISTEN
La
LA:
LES LES WB LED LE LES LA LES LE LE La
TRIGGER — The Trigger message causes all addressed instruments with this capability to
execute some predefined function simultaneously.
The 3325A does not have Trigger capability.
pe COMMAND MODE wo
DIO 1--8 DIO 1-8
TRIGGER |
wom CAIN UNLISTEN
MESSAGE ve (TRUE) > LISTEN ADDRESS cm ed
[GROUP EXECUTE} я
| Ве ADDRESSING ————
REN MUST BE TRUE BEFORE EXE-
CUTING THE TRIGGER MESSAGE.
CLEAR — The Clear message may be implemented for addressed devices or for all devices
on the bus capable of responding. In both cases the controller places the bus in the command
mode to execute the message,
COMMAND MODE
CLEAR.
ens (TRUE) DEVICE CLEAR]
я (ALL DEVICES) 0249
=
я
A-1
Appendix A | | Моде! 3325 А
COMMAND MODE 3
|
CLEAR DIO 1-8 DiO 18
MESSAGE © == TRUE) UNLISTEN LISTENER ADDRESS SELECTED DEVICE
(SELECTED DEVICE) : LEAR
0779 0048
tm ADDRESSING ——
REMOTE — Only the system controller can place the device into the Remote operating con-
dition. To implement the Remote message, the controller must set the REN line true. The
HP-IB is then in the Remote Enable mode. The controller then sends the listen addresses of
those devices that are to be placed in the Remote operating condition. Some instruments
have been designed to enter the Remote mode as soon as REN is true,
COMMAND MODE
REMOTE DIO 1-8
MESSAGE more ATN UNLISTEN
{FOR SELECTED ww REN (TRUE) ' ; LISTEN ADDRES
DEVICE! 0778
: ADDRESSING crore
REMOTE MESSAGE REN
(ENABLE ONLY) — [TRUE]
LOCAL — The Local message will remove addressed devices from the Remote operating
mode to local (front panel) control, The controller must place the HP-IB into the command
mode and address to listen all devices that are to be returned to local. The Local message
does not remove the HP-IB from the Remote mode, only the listening devices. |
COMMAND MODE
LOCAL ; DIO 1-8 |
MESSAGE ATN UNLISTEN HÔ T8
(TRUE) В LISTEN ADDRESS GO TO LOCAL
077g GTL-001g
|
la ADDRESSING ——l
A-2
LES LES LA!
LA! 183
EA is LAR 1.8 Um 3 ima LE? ig) LÆ! LA E. 26]
ED à
Model 3325A | | | Appendix A
LOCAL LOCKOUT — The Local Lockout message prevents the operator from placing the
instrument into local control from the front panel. The controller must be in the command
. mode to send the Local Lockout message.
COMMAND MODE
LOCAL ren ATN DIG 1-8
LOCKOUT | (TRUE) LOCAL LOCKOUT
MESSAGE me LLO-0218
REN MUST SE TRUE BEFORE EXE.—
CUTING THE LOCAL LOCKOUT MES—
SAGE,
CLEAR LOCKOUT AND SET LOCAL — This message removes all devices from the Local
Lockout mode and causes them to revert to local control. Because the REN line is set false,
the HP-IB is in the local mode.
COMMAND MODE
CLEAR ee REN
LOCKOUT/LOCAL — FALSE
MESSAGE
REQUIRE SERVICE — The Require Service message isimplemented by a device setting the
SRQ line true. The Require Service message and, therefore, the SRQ line is held true until a
poll is conducted by the controller to determine the cause of the request for service, or until
the device no longer needs service.
REQUIRE bt. SRO
SERVICE ¡TRUE!
MESSAGE
"REFER TO THE STATUS BYTE MES—
SAGE FOR" THE SPECIFICATIONS
REQUIRED TO FORCE SAO FALSE,
Appendix A | | Model 3325A к
STATUS BYTE — The Status Byte message represents the operational status of a single in- №
strument during a Serial Poll. A controller usually Serial Polls devices in response to a Re- =
quire Service message. The controller requests device status from one device at a time. The ee
status information byte (8 bits) sent by the device will tell whether that device needed service т
and why. A device will stop requesting service upon being Serial Polled, or if it no longer
needs service. The controller initiates the message by placing the bus into the command
mode, sending the Serial Poll Enable command, and addressing the specific devices to be
polled, one at a time. The device then sends its Status Byte and clears the SRQ line provided
the cause for the require Service message is no longer present. The controller then places the
bus in the command mode to terminate the message with a Serial Poll Disable command.
| За |
E
COMMAND MODE pi
BIO 1-8 | DIO 1-8
STATUS BYTE ¡== ATN UNLISTEN SERIAL POLL +
MESSAGE mie (TALE) ? LISTEN ADDRESS ENABLE = TALK ADDRESS
| 9778 030g |
e
DATA MODE
DC
c+D о-с
SRG В
| FALSE | STATUS BYTE (FALSE) | | e 3,
. E | Ё DE
- REQUIRES SERVICE,
RM
: "THE SRO LINE WILL NOT GO FALSE fe.
UNLESS THE DEVICE NO LONGER:
COMMAND MODE
fu
DIO 1-8 | | lios
ATN SERIAL POLL
{TRUE} : DISABLE AN
031g : fe
STATUS BIT — The Status Bit message is sent by a device to the controller to indicate its
operational status in response to a Parallel Poll. Parallel Polling consists of the controller re- =
questing one bit of status from each device simultaneously. The Parallel Poll may consist of ово
three types of operations: Configuring, Polling, and Unconfiguring. In Configuring, the “=
controller assigns each device a logic level and bit (on the bus data lines) for a poll response. Ш =
During polling, each device responds on its assigned data line with the appropriate logic В
level. In Unconfiguring, the controller negates the bit and level assignments for all or a
selected devices. Several devices may be assigned to the same bit and level, causing their
response bits to be logically ORed or ANDed.
ta!
las
AL LALO LADO alí
Las LA LE}
LAR:
LE 1.38 ALS
Model 3325A
Appendix À
Дж 2
ba PEUT
A, FF ELF EN: 254.1 Last 1.803 1 MT LA) LB) LA: LE j
CONTROLLER TO DEVICE
mm
4 PARALLEL
STATUS 5 eee с В LU Po
J : UNLISTEN ENABLE
[CONFIGURE] 0778 PRE (058) THRU 157g
ATN
| (FALSE)
STATUS DEVICE TO CONTROLLER
EL POLL RESPONSE
SIT ATN cor PARALLEL POLL RESPONSE =
AGE | TRUE)
porno | (TRUE) STATUS BIT
FROM DEVICES |
| E01
(FALSE)
CONTROLLER TO DEVICE
DIO 1-8 PARALLEL PARALLEL
STATUS — ™ UNLISTEN Ce POLL POLL
A LISTEN
(UNCONFIGURE) |" 077 ADDRESS PPD (054, PPD {160g}
R o
OR. PPE ASSIGNS THE LOGIC LEVEL AND DATA LINE OF
A DEVICE(S} RESPONSE. 140g THRU 147g ASSIGN
THE LOW {TRUE} LEVEL AND 150g THRU 15074
ASSIGNS THE HIGH (FALSE) LEVEL. 140g AND 150g
ASSIGNS BIT 2° [DATA LINE 1), 141g AND 187g
WHICH ASSIGN BIT 27 AND IS THE LAST POSSIBLE
PARALLEL ASSIGNMENT.
as ATH POLL,
— TRUE) UNCONFIGURE
PPU (025g) -
The 3325A does not respond to Parallel Poll.
Appendix A
A-6
Model 3325A
PASS CONTROL — The Pass Control message transfers bus management responsibilities
from the active controller to another controller. In order to pass control, the active con-
troller must enter the command mode, send the talk address, and the HP-IB characters for
talk control.
PASS —
CONTROL ATN
MESSAGE Ea (TRUE)
210 1-8
UNLISTEN
>
077g
COMMAND MODE
TALK ADDRESSING OF
RECEIVING CONTROLLER
РА
DIO 1..8
TAKE CONTROL
011g
*
АТМ
{FALSE}
"THE RECEIVING CONTROLLER TAKES
CONTROL AT THIS TIME.
The 3325A does not respond to the Pass Control message.
ABORT —The system Controller implements t the Abort Message to regain control of the
HP- IB from the active controller.
ABORT
MESSAGE
IFC
TRUE
A(UNADORESSES
ALL DEVICES)
9
ll
mw
MERLO LES LE LA:
LA
1.834 АЛ
ЕН EA: f
Model 3325A | Appendix B
APPENDIX B
SECTION IM
PROGRAMMING THE MODEL 33258
with the
MODEL 98254 CALCULATOR
The following basic examples are provided to assist the operator in developing programs for
the Model 3325A in an HP-IB system which uses the -hp- Model 9825A Calculator as the
system controller. The calculator must be equipped with a General I/0 ROM and an HP-IB
Interface set to select code 7. The calculator (controller) normally holds the REN line true,
unless the “lel 77 (local) command is sent. REN may be returned to the true state by the
“rem 77 (remote) command.
Example 1: This is a basic program statement which accomplishes the following:
Address the controller to talk
Address the 3325A to listen
Sent Program Data:
Function: Sine
Frequency: 5 KHz
Amplitude: 3 Vp-p
Offset: +1.5V
This portion places the bus in the command mode,
addresses the calculator to talk and the 3325A to
listen
Change to data mode
Function
Frequency All alphabetics must
Amplitude be capitals
Offset
The last parameter programmed can be changed without sending the parameter mnemonic.
For example, following the program string above, the offset (OF) may be changed to 1 V by-
— sending “IVO”,
B-1
Appendix B
B-2
Example: 2: This program sets up sweep parameters and initiates a single sweep.
Address the controller to talk
Address the 3325A to listen
Send Program Data:
Function: Sine
Amplitude: 3 Vrms
Start Frequency: 1 kHz
Stop Frequency: 10 kHz
Marker Frequency: 5 kHz
Sweep Time: 2 seconds
Start Single Sweep
NOTE
To start a single sweep the mnemonic “SS must
be sent twice. The first *‘SS’’ sets the 3325A to the
Start frequency, and the second “SS” starts the
sweep. |
7 = Interface select code
17 = 3325A address
Function
Amplitude
Start Frequency
Stop Frequency
Marker Freg
—. Sweep Time
Start Single
— 15 à CEE = REE - L 1 1 4 o it
. 11 ra НИ 1 4 HE, a ™ r т i
: 1 je à wh Re A Ep PL A Y oR Bed TE ow F Pod NOA A
Pood fi rr Eh, E EE $ tj! i Poin wd nd rg
Model 3325A
mes pen
4 oa
TE
Pe
Er
A
las
LAG
LA Sah pr:
Lai
Model 3325A Appendix B
Example 3: This example checks the “Require Service” status of the 3325A and if it did re-
quest service, determines the reason.
Si art FIT THEOFR 1. Enables all service request conditions.
USAMIVOSTIENSP](D)
SEAN (uE 2. Program data contains an error. Stop frequency
; (SP15KH) is too large for triangle function (FU3).
i ind TEES
2: Rda (7i7 a8—
"A : ma 3. Wait statement allows time for sweep to start
tere TE salient before reading status.
мове EPT Ma OE mz do E
д: - das DEANE 4. Read status byte from the 3325A and place in the
MTTH PFROCRHN"S — calculator variable “9”,
2% 5 If bit 6 of the status byte = 1, the 3325A did request
SEO dF bin ASI TA | service. Go to subroutine to determine the reason.
EFE CC Frosran |
Peor iurt 717, (7) 6. Programming continues at this point if the 3325A
TlER Tired VIVE did not request service or upon returning from the
6517 Ее РЕНИ 1 | subroutine. |
Farosnetsr Qui |
N Eo sour RE 7. If service request resulted from a program string
- ; Le i = = E o error, interrogate the 3325A to determine the error
LU AM code and place in the calculator variable “E”.
a с, ’ a a - ; ,; й > 5 8. Determine the nature of the program error.
for Function?
ZE AP Emad yor
“Gusep Time
Adna lie”
is 14 Estsnrt
“dffzset E Ampt al
incompatible” ®
ii OEI |
tii pers
Ё
Ti
ri
i
3
x
,
bi ur on pu en,
tire re Em 5
pt '
1” Ё Bo pm em ger
i — + tf 1
зо у. ня
tT " 1 z q
E a 1 wo AA „ Г" „о
Lon. 5 i La:
! 1 “я. a "Hi de + эн HE
E 2H, 45 q и.
WTP EDR E
PT di dum + El] = ik
PU] a 6 :
3 Be IATLOL i
toh 4d mr IAE рн :
: =
йо В Ho] La OA
MORO , om
Elia Pr me ad + TY oe и
бр: Tr E ИОВА д КОВ
e + . da Le TE
LT LET e PI i
; oo — u
5 „1 ® Tod = EE pe es +
1 a я = ПРО RATT
ti = ' ..
E 7 one TU a am
PRO I OEUFS PI >
ho Pa ERA ha E
Li a i po |
, N
MOL EA TE
B-3
Appendix B | Model 3325.
Ema 14 It: 7] 9. Determine other reason for service request and if
ha Po OF pr for 5,1 55 aires pm “ . di
5i=it; DEER “Sweeping” or “Busy” flags were true. -
TE CHER ER KT | a
Y AE 10. Return from subroutine.
SA ELs eet Mee
short : | | |
PTE dB has pa, - 11. Printer records the results of the serial poll, г
A O1 0 de | a ESA à ` kei
WT mm dR pe ee ax wm Td 3
à Eniture" 12. If the program string were corrected to make all Ц
18: 14 kise, data valid, this printout would result from the above _
mlm 1 E ri 78 ВЕЕР pu EU | - Program, | e
155 if bit! Fa |
Se ma 0 HEY | fo
Taw Tue HE Po LO ri
green us
К
ни
an me
A de ap AU] om _….
1 , I "E a in’ te rt > A La =. i
| не №...
1 CE +" ra , "а a herra
e OA TEO y he ba i es
io Lb I Lp Le 1 F
+“, om, ;
bromo mae ue - mena
ZE E Pr LP E от
oe E
da ie + k “ar,
Lu
I
ER.
Eo
= + wa:
Foam am 45 но “o ma pre
Ea pom j “hi PU] a —
jh, B= e a 1 i
im a Ea a LA - 3 .
pee, — 1 ;
Orea pe = -
SETTLE Sl wi AE a 4 ev,
a + + FF = u. a
1 as PCR Ts
1 .
= но.
i 1 NL, A me, ee
-, e e pr T = Ma]
Tap wrt a — ны
Example 4: The 3325A can be set up manually to the optimum parameters needed for the ~~
test to be performed, then the calculator can interrogate the 3325A to determine and record | mu
these parameters. This example program interrogates:
Function: IFU | В
Frequency: IFR | | В
DC Offset: IOF | =
Line 9 Write statement interrogates Function: read |
statement addresses 3325A to talk, calculator to fi
Ewen Fi: "IF listen, and places data in variable W; “fxd 6” fixes six |
Ed PA it a : fr
8 fe AoC ee EY decimal places. fa
AEOBERLO Function Line 1 Because only numerical data can be placed in |
mf TE
the variables, print statements may include in quotes
the parameter interrogated.
(Е
TE
DAA
AE dé
Radi lk
mp
Model 3325 À
и“ wm gee i e pe, 11
ue E ur „= RE, : во or
fa т to Po Е.
: : ye pores
SERE ig"
a * pe, pe À ++ i Le us SET] oS PUR =
! Бы L : E
mi À Far A PT
ti IR ET ..
"a = a fo 5 beg om ^^
i Aoi © Etam
; o MECO ROA ad
À = ‚= Ч : +
Me y hit bars pied IT
; gr Eh nod do ЕЁ
Е SB Sr fe
ВоВ" ЕР lora
eE ПО ИЕ
"on + 11 2" чо 4
mos = Tono $ ox 5 2 1 ei
. BJT EL MEI RS oz CUE LI
ar О pit de 6e He LAA
e
soma
ut я + wap gy от E 11
ны * So a i
„Ея 33 io À РОКА 1 * LOF
Foon ann ~ "Ed hy
я РЕД ДЕР
wahr . = . .
Ta MON a
. Es Pia dom
' Fr x
i a E À ON
а 4 pa
= rs %
rem
: "". Li =r 5 T+ MH
mdd =
ris REP =
+ LA A A DA A IA
d'a TIPA AE EE
“
ES pe ao PEE mm,
Е "y Eje AN whim
E EE EE Ew 0
al „= pt ddd ar че X 1". "A"
PRO, ARONA
de lA ER E TL
I
put =
ГЕ
1°" 1
bed E PON ado нее
PERSO A фо БЕЯ ВМ re
mu ep ee se me am
Tala E LA
fan Tom Жо РОВ, 0
A
ir A ge 5 iy
TOT amt he =
mh г, че a IH dar
a mr Ta Y
RT it bes
Ea TAE REG
it
15
Appendix B
Lines 2 - 7 Other parameters are interrogated.
Amplitude data acquired by this program does not in-
dicate the units programmed. Frequency is always
returned in Hz and DC Offset in Voits.
This printout results from the above program.
If the calculator is equipped with a String Variable ROM, the interrogate program may be
changed to the following. Because string variables accept both alpha and numeric
characters, the resulting printout includes the mnemonics and delimiters (units).
Ce ae med ue a
pe si ey Pair OREA
mo NE NN À
que 4, pa pe ee em TE we pe gm
Ba PELA EEE
Too Ea e! aan Ela aa
E. = pr ™ + Ti
HA E
ml E haa wf
4 я вру me 4 й T
4 E LL: CRE TE 5 á
to. wk "Ta ma Pr. =
id i PO FO pga 3
moe + lié
r ii
E Fe
"a вру" + TT ME Но
= : a 1 H 1
Les МЕРА Pod я А
aa AUTO TOR
51 10/1 LÉ FT +5
нех В
er he 1 +
= je de me . 13 Y
В Моро i A1 7 a
= bay ae ode OH
Boom ue, +) оно Doe 5
BOE APOT?
O e
E det Dr gerd Cee
mp Prom
- yeep +
Звон MAT 7
8 Hp РОДЕ А
4 1 we ake A
. O - „ Pia
a эл à 5 1 FT Lio ES
mera CL
т ni
da
ado]
a
мели, me ме
+ rm ML uh on
modded MER, WE
4 - —i a LL] ны Tue Tr paa" "a e
I oq 1% E at "A, 4" na E". mt J ol
pe EN WT LT LT BT By ou nv “4 1
ER Tenue! Tad at Mt Td TY A bem CE Lt a
ark a я "a 1 + И J С.Т] Ler r ah hd
Н Tu TR Y Mars :
Be di id EAL Ll RT MIA
CE I RE FoR Hi ETE E rar:
1. Dimension a string variable for each parameter
you want to interrogate. The dimension number (in
brackets) is the number of spaces assigned to the
variable.
2. This printout results when string variables are
used. |
B-5
Appendix B | Model 3325A
B-6
Example 5: The 3325A can be made to sweep amplitude (in steps) if a for/next statement is
used in the calculator program. It is recommended that the upper and lower amplitude limits
selected be on the same range because irregularities in the sweep will occur if the attenuator
relays are switched,
Line 6 DC Offset (OF9VO) is programmed to zero
because any offset would be incompatible with the 10
dE ower FIT "EJE V maximum amplitude of this sweep.
ELE MORSE EEL
i: E to Line 1 The sweep limits (3 to 10) are on the same
LS Lv Dart range. The sweep increment is in .1 V steps. Because
CEL De THY amplitude was the last parameter programmed, the
BO MERKE OL write statement does not require the “AM”
AP CELE Lo mnemonic.
1 : F7 - ’ : - Line 2 The calculator returns to Line I until 1 = 10, then
FEES + proceeds to Line 3. |
si Lg ;
Line 3 The sweep decrement is also in .1 V steps.
Line 5 Return to Line 1 to continue sweeping.
The sweep speed is determined by calculator and 3325A data transfer and processing times. If a
siower sweep time is desired, wait statements may be added before the “next IT” statements,
e A
\
LA]
A LAS
LE LE! Li; LE
LE}
LER
LH
d+ ЗАД
hE
Model 3325A
MODEL 337254
SYNTHESIZER/FUNCTION GENERATOR
HP-1B PROGRAMMING CODE
FUnction
DC only 0
Sine }
Square 2
Triangle 3
Positive Ramp. 4
Negative Ramp 5
FRequency
HZ HZ
kHZ KH
MHz MH
AMplitude |
— Volts p-p VO
тУр-р МУ
Vrms E. VR
mVrms MR
dBm DB
DC OFfset |
Volts YO
mV MV
Phase
Degrees DE
Sweep STart Frequency
Sweep StoP Frequency
Sweep Marker Frequency
Sweep Tlme
Seconds SE
~ Sweep Mode |
Linear 1
[Logarithmic 2.
StoRe Program
й — 9
REcail Program
Ша в — 9
‚Rear Or Front Panel Output
Front Ï
Rear 2
Execution Functions
Assign Zero Phase
Perform Amptd Cal
Start Single*
Start Continuous
Perform Seif TEst
(ASCII Characters)
High Voltage Output
On 1.
Off 0
Amplitude Modulation — MA -
On boo
Off 0
Phase Modulation — MP -
On Ш
Off ÿ
Data
0 0
1 i
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
(Decimal)
interrogate Operations
Function IFL
Frequency IFR
Amplitude ¡AM
Offset ¡OF
Phase IPH
Swp Start Freq IST
Swp Stop Freg ISP
Swp Mkr Freg IMP
Sweep Time E"
Sweep Mode ISM
Rear/ Front Out [RF
High Volt Oui [HY
Error | ER
Program Mode IMD -
Amptd Mode IMA
Phase Mode IMP.
Error Codes {See Paragraph 3-146)
Appendix B
, Entry parameter out of bounds ”
. Invalid delimiter
. Sweep time too smail or too large
!
2 |
3. Frequency too large for function
4
5
. Offset and amplitude incompatible
7. Unrecognizable mnemonic
8. Unrecognizable data character
9. Option does not exist
Start Single code must be sent twice SSSS””. The first “SS” resets the sweep to stari conditions and
the second “SS” starts the sweep.
6. Sweep frequency or bandwidth error
B-7
Appendix B
E $
Lal lai 18) al lalola
| оЗАМЗИВЛаЙИ 10М=М | ЗАТЗОЗЫ ONV ON3S=¥S ANO JAÍ903U-U “ ATNO ON3S=5*
1308V
Model 3325A
TOY1NOI SSVd
118 SMIVIS
ЗАВ SNivis
A001 AYES INTIMO
19207 1958 ONY
1000207 YYIT9
1OX3071 1V907
310N3Y
207
dV 3710
HIS
VLYG
«NO | LV INIWNA dN 391120
39vSS IN
VIA O30
AVL [SSIMAAY
NILS |]
NOLTLIVO 141 IN3IQ]
_ 3JIA0
LIIHSMYOM NOI LVININI TAN] El-dH
B-8
A ый. 188: EE
Le 1
E
Paragraph Page
4-1. Introduction ........ oii... FU 4-1
4-3, Calculator-Controlled Test.......1211000 110100 4 da aa aa La ae 4-1
4-5. Operational Verification .......................... AP 4-1
4-8. Required Test Equipment ............... EU 4-1 >.
4-10. Self Test. .... ee ee KR 0 a a eee 4-1
4-12. Sine Wave Verification «i ee ee 4-1
4-14, Square Wave Verification. ................... PERE ee 4-2
4-16. Triangle and Ramp Verification ........... iii, 4-3
4-18. Amplitude Flatness Check .................. ee a 4-3
4-20). Sync Output Check ........ Caradaderaanerenacereaoroaaoranoarene, 4-4
4-22. Frequency ACCUTACY ........e oem edrreraa aa aaarecaecanoorecerarerez 4-4
4-24, Output Level and Attenuator Check ...... a, 4-4
4-26. Harmonic Distortion Tesf.......... Ka nea e 4-5
4-28. Close-In Spurious Signal Test o.oo... oo iii a ae eee 4-6
4-30. HP-IB Interface Test... oii ii eee cee ea 4-6
LIST OF ILLUSTRATIONS LIST OF TABLES
Figure Page | Table : Page
4-1. Harmonic Distortion Verification
4-1. Test Equipment Required
(High Voltage Output) ............... 4-3 tor Operational Verification............
= mea
Eure
бан
wil e
EA
¡e
Model 3325A
Performance Tests
SECTION IV
PERFORMANCE TESTS
4-1. INTRODUCTION.
4-2. This section contains tests which are in-cabinet
procedures to determine whether the instrument is.
operating properly, In the Operating and Service
Manual two sets of procedures are provided:
a. Operational Verification procedures which are
recommended for incoming inspection and general
after-repair tests.
b. Performance Tests which compare the instrument
operation to the specifications listed in Table 1-1.
The Operating Supplement contains only the Opera-
tional Verification Procedures.
4-3, CALCULATOR-CONTROLLED TEST.
4-4. The only calculator-controlled test in these pro-
cedures tests the HP-IB interface circuits for proper
operation. All input and output lines are tested. The
—. program used for this test is written specifically for the
-hp- Model 9825A Calculator but may be adapted to
— other controllers. The calculator prints the test results.
This test is recommended for both the Operational
Verification Checks and the Performance Tests.
4-5. OPERATIONAL VERIFICATION.
4-6. The following procedures are recommended for in-
coming inspection and for testing the instrument after
repair. Additional tests to be performed following
repair of certain circuits are indicated in Section VIII
An Operational Verification Record is located at the
end of this section. For ease of recording the test data at
various times, copies of the blank Operational Verifica-
tion Record may be made without written permission
from Hewlett-Packard.
4-7. Operational Verification includes the following
procedures:
Par. No. Test
4-10 Self Test
4-12 Sine Wave Verification
4.14 Square Wave Verification
4-16 Triangle and Ramp Verification
4-18 Amplitude Flatness Check
4-20 Sync Output Check
4.22 Frequency Accuracy
4-24 Output Level and Attenuator Check
4-26 Harmonic Distortion Test |
4.28 Close-in Spurious Signal Test
4-30 HP-IB Interface Test
4-8, Required Test Equipment.
49. A list of test equipment required for the Opera-
tional Verification procedures is given in Table 4-1. Any
equipment that satisfies the critical specifications given
in the table may be substituted for the recommended
model.
4-19. Self Test.
4-11. This test uses the control, ROM, and control
clock circuits to verify operation of these and other cir-
cuits. The following front panel indications result from
this test.
LED check: Turns on all LED’s for about two
seconds
The following messages are displayed for about
one second:
OSC FAIL - displayed only if the VCO is not con-
trolled (displayed continuously after test)
PASS or FAIL 1 - tests AMPTD CAL of sine
wave
PASS or FAIL 2 - tests AMPTD CAL of square
wave
PASS or FAIL 3 - tests AMPTD CAL of triangle
Press the blue entry prefix key, then press SELF TEST
(AMPTD CAL) key. All LED's should light, and the
display should not indicate any failures.
4-12. Sine Wave Verification.
4-13. This procedure visually checks the sine wave out-
put for the correct frequency and any visible ir-
regularities.
Equipment Required: Oscilloscope {-hp~ Model 1740A)
a. Connect the 3325A signal output to the
oscilloscope vertical input. If the oscilloscope is an -hp-
Model 1740A, set the input switch to the 50-ohm posi-
tion. If your oscilloscope does not have a 50-ohm input,
use a 50-ohm load (-hp- Model 11048C 50-ohm Feed-
thru Termination) at the input. |
b. Set the 3325A as follows:
High Voltage Output (Option 002).....Off
Function ......... PAS Sine
Frequency. .................... 20 MHz
Amplitude. . ................... 10 Y p-p
4-1
Performance Tests
Table 4-1. Test Equipment Required for Operational Verification.
| Instrument
Critical Specifications
Recommended Model
Oscilloscope
Vertical:
Bandwidth: dc to 100 MHz
Deflection: 1 V to 5 V/div
Horizontal:
Sweep: .05us to 1 s/div
External Sweep Input
-hp- 1740A
Electronic Counter
frequency measurement to 20 MHz
Accuracy: +2 counts
Resolution: 8 digits
-hp- 5328A
with Opt. 040 or 041
DC Digital Voltmeter Ranges: 0.1 V.to 100 V -hp- 3455A
Resolution: 6 digits
Accuracy: +0.1%
BO-ohm load Accuracy: +0,2% -hp- 11048C
Power Rating: 1 W
High Frequency
Spectrum Analyzer
Frequency Range: 1 MHz to 80 MHz
Amplitude Accuracy: 0.5 dB
Noise: > 70 dB below reference
-hp- 141T/8552B/8553B/
8566A/8568A
Low frequency
Spectrum Analyzer
Frequency Range: 100 Hz to 50 kHz
Amplitude Range: 2 m V to 20 V
Noise: >80 dB below input reference
ar — 140 dBy -
-hp- 3580A/3585A
Resistor 56.20 1/8W 1.0% -hp- 0757-0395
Adapter BNC female-to-dual banana plug -hp-. 1250-2277
Calculator НР-!В Control Capability -hp- 9825A with
98034A Interface,
General 1/0 ROM,
Extended 1/O ROM
Resistor — 4709 2W 5% -hp- 0698-3634
с. Set the oscilioscope vertical control to 2 V/div,
horizontal to .05 us/ div,
d. The oscilloscope should display one cycle per divi-
y five divisions peak-to-peak.
sion, approximate]
e, Change 3325A frequency to | MHz.
f. Change oscilloscope horizontal control to .]
ps/div.
regularities,
option off,
g. The oscilloscope should display one sine wave hav-
ing no visible irregularities.
High Voltage Output (Option 002)
h. Set the oscilloscope vertical control to $ Y/div,
i. Set the oscilloscope input switch to 1 MQ de coupl-
ed position (or discon
4-2
fect external 50-ohm load).
j. Press 3325A High Volta
corner of front panel).
|. Press the High Volta
4-14. Square Wave Verification.
4-15. This procedure checks the square wav
frequency, rise time, and abberrations.
Model 3325A
ge Output key (lower right
K, Change 3325A amplitude to 40 V p.p. The
oscilloscope should display one sine Wave
ly eight divisions peak-
approximate-
to-peak having no visible ir.
ge Output key again to turn the
e output for +
Equipment Required: Oscilloscope (-hp- Model 1740A)
Hr
pe
FE
| 4
ет
ги
N Я
rr;
AA
the input.
Model 3325A
a. Connect the 3325A signal output to the
oscilloscope vertical input. If the oscilloscope is an -hp-
Modei !740A, set the input switch to the 50-ohm posi-
tion. If your oscilloscope does not have a 50-ohm input,
use a 30-ohm load (-hp- Model 11048C 50-ohm Feed-
thru Termination) at the input.
db. Set the 3325A.as follows:
High Voltage Output (Option 002) , .... Off
Function ........................ Square
Frequency ..........,. RS I MHz
Amplitude... ren 10 У р-р
c, Set the oscilloscope vertical control to 2 V/div,
horizontal to .2 ps/div. The oscilloscope should display
two square waves, approximately five divisions peak-to-
peak.
d. Switch the oscilloscope vertical control to 1 V/div.
so that the abberrations (overshoot and ringing) can be
measured. Aberration excursion should be less than 500
mV (#4 div.)
e. Repeat Step d at 2 kHz and .1 ms/div.
f. Adjust the oscilloscope vertical and horizontal
controls so that the square wave rise time between the
10% and 90% points can be measured. Rise time should
be less than 20 nanoseconds.
4.18. Triangle and Ramp Verification.
4-17. This procedure checks the triangle and ramp out-
put signals for frequency, shape, and ramp retrace time.
Equipment Required: Oscilloscope (-hp- Model 1740A)
a, Connect the 3325A signal output to the oscilloscope
vertical input. If the oscilloscope is an -hp- Model 1740A,
set the input switch to the 50-ohm position. If Your oscil-
loscope does not have a 50-ohm input, use a 50-ohm load
(-hp- Model 11048C 50-ohm Feedthru Termination) at
b. Set the 3325A as follows:
High Voltage Output (Option 002) ..... Off
Function ....................... Triangle
Етедчепсу ......... 2. уу ние, 10 kHz
Amplitude ........... PIP 10 Y p-p
¢. Set the oscilloscope vertical control to 2 V/div,
horizontal to .1 ms/div. The oscilloscope should display
one triangle wave per division, approximately five divi-
sions peak-to-peak.
d. Change the 3325A function to positive siope ramp.
The display should be one ramp per division, approxi-
mately five divisions peak-to-peak.
Performance Tests .
e. Change 3325A function to negative slope ramp.
The display should be one ramp per division, approx-
imately five divisions peak-to-peak.
f. Change the oscilloscope horizontal and vertical
controls so that the ramp retrace time from the 90% to
10% points can be measured. Retrace time should be
less than 3 us.
g. Change 3325A function to positive slope ramp and
repeat Step f, |
h. Change 3325A function to triangle.
1. Set oscilloscope vertical control to 2 V/div,
horizontal to 10 us/div. The oscilloscope should display
one triangle wave with no visible irregularities in either
slope. |
4-18, Amplitude Flatness Check.
4-19. This procedure provides a visual check of the sine
wave amplitude flatness. |
Equipment Required: Oscilloscope (-hp- Model 1740A)
a. Connect the 3325A signal output to the
oscilloscope vertical input. If the oscilloscope is an -hp-
Model 1740A, set the input switch to the 50-ohm posi-
tion. If your oscilloscope does not have a 50-ohm input,
use a 50-ohm load (-hp- Model 11048C 50-ohm Feed- -
thru Termination) at the input.
b. Set the 3325A as follows:
High Voltage Output (Option 002) ..... Off
Function .............. SU Sine
Frequency ........ PS 2 kHz
Amplitude ............ ee 10 V p-p
Sweep Start Freq .................. . 0 Hz
Sweep Stop Freq. ................ 20 MHz
Sweep Marker Freq ............... 5 MHZ:
Sweep Time ..................... .. 01 sec
c. Connect the 3325A X-Drive output to the oscillo-
scope’s channel B input. Connect the 3325A signal out-
put to the oscilloscope’s channel A input.
* d. Set the oscilloscope as follows:
Display... o.oo aa La Avs B
~ Channel A Sensitivity ....... PAS 1 Y/div
(uncal - adjust for full vertical deflection) |
Channel B Sensitivity ................... 0.5V/div
(uncal - adjust for full horizontal sweep)
* Settings may vary from one oscilloscope to another.
Note that whichever scope is used, it should be operated
in a “X-Y” mode, with the 3325A X-Drive output driv-
ing the horizontal (X) sweep and the signal output driv-
ing the scope's vertical (Y) channel.
4-3
Performance Tests
e. Press the 3325A START CONT key,
f. The oscilloscope display should show a sweep that
is essentially flat, dropping no more than 3.5%. Any D.C,
variations should be ignored, taking the peak-to-peak
reading for flatness comparison.
4-20. Sync Output Check.
4-21. This test verifies the sync output signal levels.
Equipment Required: Oscilloscope (-hp- Model 1740A)
a. Connect the 3325A sync output to the oscilloscope
vertical input. If the oscilloscope is an -hp- Model
1740A, set the input switch to the 50-ohm position. If
your oscilloscope does not have a 50-ohm input, use a
30-ohm load (-hp- Model 11048C 50-ohm Feedthru Ter-
mination} at the input, |
b. Set the 3325A function to sine, frequency to 20
MHZ,
c. Adjust the oscilloscope controls to measure the
high and low voltage levels of the sine square wave. The
high level should be greater than +1.2 Y and the low
level should be less than +0.2 Y.
4-22. Frequency Accuracy,
4-23. ‘This test compares the accuracy of the 3325A out-
put signal to the specification in Table 1-1: +5 x 10%
of selected frequency. Ш
Equipment Required: Electronic Counter (-hp- Model
5328A, calibrated within three months or with an
accurate 10 MHz external reference input)
a. Connect the 3325A signal output to the electronic
counter channel À input with a 50 Q load. Allow 3325A
and counter to warm up for 20 minutes.
b. Set the 3325A output as follows:
Function .................... aaa Sine
Frequency ...................... 20 MHz
- Amplitude LLL 0.99 Y P-P
DC Offset... en, 0 Y
C. Set the counter to count the frequency of the A input
with 0.1Hz resolution, and adjust for stable triggering.
Electronic counter should indicate 20 000 000.0Hz
+ 100Hz, :
d. Change 3325A function to square wave. Frequen-
cy automatically changes to 10 MHz. Electronic counter
should indicate 10 000 000.0 Hz + 50 Hz.
¢. Change 3325A function to triangle. Frequency auto-
matically changes to 10kHz. Move the counter input to
4-4
Model 3325A
the sync output of the 3325A. Set the counter to average
1000 periods. Electronic counter should indicate 100 f”
000.00ns +0.5ns.
í. Change 3325A function to positive slope ramp.
Electronic counter should indicate 100,000 ns + .5 ns.
4-24. Dutput Level and Attenuator Check. |
4-25. This procedure checks the output level and the at-
tenuator by using the “de only” function.
Equipment Required:
DC Digital Voltmeter (-hp- Model 3435A)
30-ohm Feedthru Termination (-hp- Model 11048C)
a. Connect the 3325A signal output through a
50-ohm feedthru termination to a dc digital voltmeter
input,
b. If the instrument has High Voltage Output Option
002, make sure the High Voltage Output is Off (High
Voltage indicator light in the center of the “SIGNAL”
key in the lower right corner of the front panel if Off).
c. Press whichever function key is presently active,
indicated by a lighted indicator in the center of the key,
This removes the ac output, The indicator in the center =
of the DC OFFSET key should light.
d. Set the 3325A de offset to -5 Y, then press the
AMPTD CAL key, |
e. The dc digital voltmeter reading should be -4.980V
to -5.020V.
f. Change 3325A dc offset to (+) Y. Digital -
voltmeter reading should be +4.980 V to +5.020 М.
g. Change 3325A dc offset to the following voltages,
The voltmeter readings should be within the tolerances
shown.
DC Offset Tolerances
+ 1.499 V + 1.49300 to 1.50499 V
+ 499.9 mV + 0.49790 1ю 0.50190 V
+ 149.9 mV + 0.14930 10 0.15050 V
+ 49.99 ту + 0.04979 то 0.05019 У
+ 14.99 mV +0.01493 to 0.01505 V
+ 4.999 mV +0.004979 to 0.005019 V
+ 1.499 mV + 0.001479 to 6.001519 V
High Voltage Output Option 002 DC Offset
h. Remove the 50-chm feedthru termination and =
connect the 3325A output directly to the digital
voltmeter input.
Em ©
AE
UR, E
Model 3325A
i. Press the “SIGNAL” key in the lower right corner
i; Bi the 3325A front panel to select High Voltage Output
(Option 002). Lighted indicator in the center of this key
indicates High Voltage Output is on.
J. Set 3325A dc offset to 20 V. Digital voltmeter
reading shouid be + 19.775 Y to +20.225 Y.
k. Set 3325A dc offset to —20 V. Digital voltmeter
reading should be — 19,775 V to — 20.225 V.
4-26. Harmonic Distortion Test.
4-27. This procedure tests the harmonic distortion of
the 3325A sine wave output against the following
specifications from Table 1-1.
Harmonic Distortion (relative to fundamental)
Fundamental No Harmonic
Frequency Greater Than
0.1 Hz to 50 kHz — 65 dB
50 kHz to 200 kHz — 60 dB
200 kHz to 2 MHz — 40 dB
2 MHz to 15 MHz — 30 dB
15 MHz to 20 MHz — 25 dB
| Equipment Required:
High Frequency Spectrum Analyzer (-hp- Model 141T/
8552B/8553B/8566A/8568A)
Low Frequency Spectrum Analyzer
{-hp- Model 3580A/ 3585A)
>O-ohm Feedthru Termination Chp- Model 110480)
Resistor 4700 2W 5% (-hp- 0698-3634)
Resistor 56.20 1/8W 1% (-hp- 0757-0395)
Performance Tests
a. Set the 3325A output as follows:
High Voltage Output (Option 002) cee Off
Function .............. ea Sine
Frequency oo... ae 4 20 MHz
Amplitude... .................. 999m Vp-p
b. Connect the 3325A signal output to the high fre-
quency spectrum analyzer’s 50 ohm input.
¢. Set the spectrum analyzer controls to display the fun-
damental and at least four harmonics. Verify that all har-
monics are 25dB below the fundamental.
d. Set the 3325A to the following frequencies and verify
that all harmonics are below the specified levels, relative
to the fundamental.
15 MHz —30 dB
2 MHz — 40 dB
200 kHz — 60 dB
e. Disconnect the 3325A from the high frequency spec-
trum analyzer and connect it to the low frequency spec-
trum anaiyzer’s 50 ohm input.
f. Set the 3325A frequency to 50kHz and the ampli-
tude to 9.99m Vp-p. :
g. Set the spectrum analyzer controls to display the fun-
damental and at least three harmonics. (It may be neces-
sary to decrease the analvzer’s video bandwidth to
separate the harmonics from the noise floor.) Verify that
all harmonics are at least 65dB below the fundamental.
LOW FREQUENCY
3325A SPECTRUM ANALYZER
E pas
hr paf
3 NJ 7
ed bod ed) РР) si 231 |
_ mA á
© ml 8 — © 4700 . o
_ a, —
56.20
1/8W
Figure 4-1. Harmonic Distortion Verification
(High Voltage Output).
4-5
Performance Tests
h. Set the 3325A to the following frequencies and verify
that all harmonics are 65dB below the fundamental.
10kHz
1kHz
100Hz
High Voltage Output (Option 2)
1. Connect the 3325A signal output to the low fre-
quency spectrum analyzer’s 50Q input. (See Figure 4-1.)
i. Press the ““high voltage output’ key on the 3325A.
Set the amplitude to 40Vp-p and the frequency to 100Hz.
K. Set the spectrum analyzer controls to display the fun-
damental and at least three harmonics. Verify that all har-
monics are 65dB below the fundamental.
I. Set the 3325A to the following frequencies and verify
that their harmonics are below the specified levels, rela-
tive to the fundamental.
10kHz -65dB
200kHz -60dB
iMHz -40dB
m. Press the high voltage output key to deactivate the
high voltage output.
4-28. Close-in Sourieus Signal Test.
4-29. This procedure tests the sine wave output for
spurious signals which may be generated by the 3325A
frequency synthesis circuits. The spurious signals must
be more than 70 dB lower than the fundamental signal.
Equipment Required: Spectrum Analyzer (-hp-3585A/
8566A/8568A)
a. Set the 3325A as follows:
High Voltage Output (Option 002) ..... Off
Function ........ PAS Sine
4-6
rectly.
Model 3325A
Frequency ................... 20.001MHZz
Amplitude .................... -2.99dBm
DC Offset 11111021 aa aa Lana at ov
b. Connect the 3325A signal output to the spectrum.
analyzer’s 50 ohm input.
¢. Set the spectrum analyzer controls for a center fre-
quency of 20.001MHz, a resolution bandwidth of 30Hz,
a 100Hz/div frequency span, with the fundamental refer-
enced to the top of the display graticule.
d. Set the spectrum analyzer center frequency to
20.002, 20.003, and 20.004MHz, verifying in each case
that all spurious signals are more than 70dB below the
fundamental.
4-30, HP-iB interface Test.
4-31, The following calculator program tests the opera-
tion of the 3325A HP-IB interface circuits. The pro-
gram is written for an -hp- Model 9825A calculator but
may be adapted for other controllers.
Equipment Required:
-hp- Model 9825A Calculator equipped with:
98034A HP-IB Interface (set to select code 7)
Any combination of ROM's that includes a General
1/0 ROM and an Extended 1/0 ROM
a. Connect the calculator interface cable to the
3325A rear panel HP-IB connector. It is recommended
that no other equipment be connected to this HP-IB
during this test.
b. Enter the program into the calculator.
c. Press RUN. Tests 4 through 7 in this program re-
quire the operator to press CONTINUE if the test
passes, or 1 CONTINUE if the test fails. If the Test 4
question (SRQ LIGHT ON?, 1 = NO) does not appear
in the calculator display within 30 seconds after start of
the program (RUN), the 3325A and calculator are not
interfacing properly. The calculator may display an er-
ror indication that will identify the problem. If not, the
3325A HP-IB circuits are probably not operating cor-
on)
ren
re
a
‘ий
a
a:
Ta:
E
4
1: TARR. LE E т.
LL
LE: +
Model 3325A
instrument Returns To Known Conditions After Self
Test
Test 1 - Did Frequency Go To 1000 Hz?
Tesi 2 — interrogate Frequency
Test 3 ~ interrogate Amplitude
Test 4 - Test SRQ Circuits
Test 5 — Test Talk Circuits
Test 6 - Test Listen Circuits
Test / — Test Remote Circuits
Performance Tests
PROGRAM FLOWCHART
Enter 332 5A Bus Address
Perform Self Test
Freg = 1000 Hz? ERROR
Program:
Freg = 17234 56789 Hz
AMPTO = 50 mV
ls NO
Frequency ERROR
Correct
|5 NO
Amplitude ERROR
Correct
I
Program Sweep:
* kHz to 10 «Hz
10 sec, Enable Mask
SAO
Light On ERROR
Taik =
Light On SRROR
Listen ERROR
Light On Le
ERROR
Print Results
Eng
4-7
Performance Tests | Model 3325A
a
“on 1 it 1 a ar a eue N EURO Ra ee as 11
Da ETE E AAA E
ion yp a 1 Bier bo
ct H 1
Les В Tr’ 1 Ч Sut al Бана ok
St . 15 8 kr yt pe Mar presa em PALA A
дов ps fouet veel ons | bet | bal | |
El Ti he i il da me dee A
Fiore A Clear the 3325A to Turn-on State в
Gi Fam € —Set HP-IB Remote Enable (Select Code 7) №
| .
| [ Perform Self Test
а ВКО interrogate Frequency
Lua re sr Read 3325A Frequency
Lai FAR LE lee - Compare Frequency to 1000 Hz
|
LAI TEST a Grue 8 ás.
CVE RT Aa REÍ£Sa, NOTES AMG ——— ——Setfregto 1234.567890 Hz, Amptd to 50MV ®° a
LEI PO Ph bn * Store Settings in Register 3 >
ME corn Clear the 3325A =
с 9 DOF ble TERT Recall Settings in Register 3 =
Sas TEST 2s =
a MF Ma TIRES — interrogate Frequency | Ш
cdi red Hal - Read Frequency oe
“a
ma TORA, Sl + pa | Compare to Frequency Stored
Zi Et Ha RIP - Interrogate Amplitude
sus rend Ma — Read Amplitude | |
SEE HR ED Lp Compare to Amplitude Stored ge
4-8 | ma.
FREE
OUR
Model! 3325 À Performance Tests
Fast "TEST 46 -
AXE dE Ma ST EMO EPIakRk SP TIAS MECO ASC A“Lin Sweep 1— 10kHz, Enable SRQ Mask
LEE Рае 7 - Clear Interface, Interface to Local
SEO heredero SEL LIGHT CMS aha rá — — ———Did 3325A Initiate SRQ?
BETO | |
E
ser pom lan Read Status into Variable 5
© | Set Remote Enable
48 red Mel Read from the 3325A
411 berprent CTHELE LIGHT GAS: SHO" ————— Did 3325A respond to Tatk Command?
bar TEME | |
LA REE Maio > Write to the 3325A, interface to Local
seem EN CL TE TEN LIGHT CAS ia": re ——— Did 3325A respond to Listen Command?
я E: Remote Interface, Write to 3325A,
dm em Ca Aid à Clear Interface
“heu
443 beep CREAUTÉE LIGHT OMe aR" pV ee Did the 3325A Respond to Remote?
EA
=
I 2
i
E
т
LL
re
—+
TE
"TT.
=
4
+
+
+
+
—
x
= дона
E y
OT
Г"
TE
I
“Ti Lan
STE ma lr E
mid 14 FIRE RE TEMP Ta? pt ff — Print Results of Tests
9918 14 Pistsert TEST a fa" РАЦ”
ant A Cll] de Лив =
ETE pry CELPELLELELELELES" Topo Y
MEG SAL CC Repedt Least. ses" a:LCrRif Cmliato E Self Contained Program may be
TI 8 eau - 1 i
SHE eed | Linked or Used as a Subroutine
Sh
4-9
Performance Tests | Model 3325A
e
Ч.
Г
de
es
Variables used in this Test Program: - wr
сл
Address of 3325A {defaults to 717)
Frequency read from 3325A in test #1
Frequency read from 3325A in test #2
Amplitude read from 3325A in test #3
Counter used to print test results
ri-7 Test results (0=Pass, 1 =Faih
S Status read from 3325A in test #5
— mp
E
A
с
Samples of Program Printouts: | Es
e _…
pes
e
Soom
+ Eee a UT LE LA UE ONE ONE ao má aa ET a
г Рой A rte ты тен al ен le mp ras NE orem a mime amin :
Habbo fam whl are Ra pri a HP Ha = Hn she ванн не re т D aa a 14 Ir na ah a ` пл
ца hl = rd vu be “Te Dat > a
и, ину me, ee HI =
“a ld ‚2 pope
td Ed = ЗЕЕ
ad wr a — pr = тен ARE bea Ar rw
13 Fri T г“; rr 1 В OL Pol |
E da OL HT À i io Pr Ur à
Pai RA But РОВ] - = fe ”
Er an + = ки a a re — wp
oe = Th a HA amas He me pr т ЯМА mlm dar : H
еее EA wi == gain fie = wpe oe не ee ' a an RA TT E
AE
a. in LA "+
A 4 те risk 24 Abla pr mee Hi re Hp nn Hb
ce i Jr = ej — HA — тт > df — HH - a
ма ны =
Harta — = т =
re pe em Fy fil a Ln Era =
mor i ma! 4 =
воен mea - = i i= EC id i =
РО a E = i ore =
Ti
in
FEL
JA 1
“Ti
In
rm
il
E.
тор оум. == pe qe = ret — A
È 5 | = 1 = и Но
D Loue Aral Eo a | 2 м
Tt
TT
ES
1,15
Ti
ml!
i,
I
1
i _
O И“ o бог,
i ; г в не Fam"
PTT 0 РОБ
: _ i
me cd PE a
у Ls wan bd Tm a
Ta Г.
НЕТ! ПОМ на
i 1d de - pu
rt pane — pe = mur =
joa г. т" rr WT =
1 3 Tews Cm” ml - .
тит, rw [A — г“ = — =
ty
Br ru № вн in
тен” Бе Fm Tod]
+ _ 7 — —
—
PE
1
—
J
4
[IT
bit
+
ii :
Em Ra
“T1
Ts
ETI
i
E
LI
Er
Tn
i
ГА
1
—
>
—
FT
Er
+
vi
Ea у 1 =| CNC
E = Fur :
се ЕЕ
1d Ten rr та rn aa aa 1. В an an rE . "+ > .. "' = + x "a ra Lo "я “4 AL = че +. "т Ea a
EA ELE LEE ELL L EEE ELLE LE |
4-10
a
E
e
Hewlett-Packard
Model 3325A
Synthesizer/Function Generator
Serial No.
Par. 4-10
Par, 4-12
Step d
Step g
Par. 4-14
step c
Steps d & €
Step f
Par, 4-16
Step c
Step d
Step €
Step f
Step g
Step |
Par, 4-18
Par, 4-20
Par, 4-22
Step c
Step d
Step e
Step f
OPERATIONAL VERIFICATION RECORD
Tested by
Date
Self Test
Sine Wave Verification
20 MHz: Frequency and Amplitude
Signal Purity
High Voitage Output (1 MHz)
Square Wave Verification
Frequency and Amplitude
Abberations
Rise Time
Triangie and Ramp Verification
Triangle Freq. and Amptd.
+ Ramp Freq. and Amptd. |
- Ramp Freq. and Amptd.
— Ramp Retrace Time |
+ Ramp Retrace Time
Triangle Linearity
Amplitude Flatness
Sync Output Check High
Low
Frequency Accuracy
Sine, 20 MHz
Square, 10 MHz
Triangle, 10 kHz (100,000 ns)
Ramp, 10 kHz {100,000 ns)
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
Passed
>+1,2V
<0.2V
Spec.
+ 100 Hz
+ 50 Hz
+ .5 ns
+ Bons
Operational Verification
Par, 4-24 Gutput Levs! and Attenuator Check
IDC Offset Oniy)
Max,
— - 5.020 Y
— + 85.020 V
{#1 1.50459V
w— +9.50190 V
+0.15050 V
+ 0.08018 V
+0.01505 V
. +0.005019 у
Entry Min.
-5V — 4.380 V
A+)5 V +4.880V
* (+) 1,499V (+) 1.49300V
488.8 mv + 0.48780 V
149.3 mv +0.14930 у.
48.89 mv +0.04379v
14.89 mv +0.01493 V
4.339 mv +0.04879 V
1.488 mv +0.001479 Vv
+0.001519 V
* АН entries and limits are +
High Voltage Output (Option 002)
| 20 Y +19.775 V
— 20 V . —19.775 V
m + 20.225 V
wer — 20.225 у
Par. 4-28 Harmonic Distortion
20 MHz
15 MHz
2 MHz
200 kHz
50 kHz
10 kHz
1 kHz
100 Hz
| High Voltage Output ¿Option 002!
100 Hz
10 kHz
200 kHz
1 MHz
Par, 4-28 Ciose-In Spurious Signal Test
Par, 4-30 HP-1B Check
All Harmonics Below:
— -30 dB
„= — 40 dB
- 60 dB
- 65 dB
= = 65 dB
…—_ — 65 dB
— > 65 dB
— — 65 dB
- 60 dB
= = 40 ав.
Раввеа nn nn
Passed
—25dB -
— 65 dB
vues
==
TT
">