Wiltron 67 B Series User manual

490 JARVIS DRIVE
MORGAN HILL, CA 95037-2809
SERIES
67XXB
SWEPT FREQUENCY SYNTHESIZER
OPERATION MANUAL
P/N: 10370-10202
REVISION: G
PRINTED: MAY 1994
COPYRIGHT 1992 WILTRON CO.
IMPORTANT NOTICE
After turn on, the synthesizer requires one hour of warm up
to assure stable operation. Error codes that are displayed
during this hour may not be the result of actual failures and
should be rechecked at warm up completion by running
self test.

WARRANTY
The WILTRON product(s) listed on the title page is (are) warranted against defects in materials
and workmanship for one year from the date of shipment, except for YIG-tuned oscillators and
all WILTRON manufactured microwave components, which are warranted for two years.
WILTRON’s obligation covers repairing or replacing products which prove to be defective during
the warranty period. Buyers shall prepay transportation charges for equipment returned to
WILTRON for warranty repairs. Obligation is limited to the original purchaser. WILTRON is
not liable for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to WILTRON connectors that have failed due to normal
wear. Also, the warranty does not apply to defects resulting from improper or inadequate
maintenance by the Buyer, unauthorized modification or misuse, or operation outside of the
environmental specifications of the product. No other warranty is expressed or implied, and the
remedies provided herein are the Buyer’s sole and exclusive remedies.
NOTICE
WILTRON Company has prepared this manual for use by WILTRON Company personnel and
customers as a guide for the proper installation, operation, and maintenance of WILTRON
Company equipment and computor programs. The drawings, specifications, and information
contained herein are the property of WILTRON Company, and any unauthorized use or
disclosure of these drawings, specifications, and information is prohibited; they shall not be
reproduced, copied, or used in whole or in part as the basis for manufacture or sale of the
equipment or software programs without the prior writtten consent of WILTRON Company.

MANUAL CHANGES
MANUAL:
Title: Series 67XXB Swept Frequency Synthesizer Operation Manual
Part Number: 10370-10202
Rev. Ltr/Date: G / May 1994
CHANGE PACKET
Part Number: 10900-00149
INSTRUCTIONS
1. Make the manual changes listed below. The changes are listed in numerical order by page number.
Effectivity is all swept frequency synthesizer serial numbers.
2. The replacement pages provided are for technical changes to the manual. The black bar or bars in the
replacement page margins shows the area in which the changes were made.
CHANGE 1, May 1995
1. Page 1-8
Replace with enclosed pages 1-7 and 1-8, Changed: May 1995.
PCO: 21631
67XXB OM C-1/C-2

CONTENTS
Paragraph Title Page
SECTION I — GENERAL INFORMATION
1-1 SCOPE OF THE MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 IDENTIFICATION NUMBER . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-4 RELATED MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-5 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-6 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-7 PERFORMANCE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 1-4
1-8 RECOMMENDED TEST EQUIPMENT . . . . . . . . . . . . . . . . . . . 1-4
SECTION II — INSTALLATION
2-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-2 INITIAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-3 PREPARATION FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-4 GPIB SETUP AND INTERCONNECTION . . . . . . . . . . . . . . . . . 2-3
2-4.1 Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4.2 Cable Length Restrictions . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4.3 GPIB Interconnection . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4.4 GPIB Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4.5 Data Delimiting (CR-CR/LF) . . . . . . . . . . . . . . . . . . . . . 2-5
2-5 PREPARATION FOR STORAGE AND/OR SHIPMENT . . . . . . . . . . 2-5
2-5.1 Preparation for Storage . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-5.2 Preparation for Shipment . . . . . . . . . . . . . . . . . . . . . . 2-5
SECTION III — LOCAL (FRONT PANEL) OPERATION
3–1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3–2 GETTING STARTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3–2.1 Front Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3–2.2 General Instrument Control . . . . . . . . . . . . . . . . . . . . . 3-3
3–2.3 Operating the Frequency, Sweep, and Trigger Functions . . . . . 3-3
3–2.4 Entering Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3–2.5 Setting Level and Modulation . . . . . . . . . . . . . . . . . . . . 3-8
3–2.6 Using the RF LEVEL Function . . . . . . . . . . . . . . . . . . 3-13
3–2.7 Using Stored Setups . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3–2.8 Monitoring the Output . . . . . . . . . . . . . . . . . . . . . . . 3-16
3–2.9 Controlling and Monitoring GPIB Status . . . . . . . . . . . . . 3-16
3–3 FRONT PANEL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 3-16
3–3.1 SELF TEST or RESET and LINE Keys (Figure 3-5) . . . . . . 3-17
3–3.2 FREQ ENTRY Keys (Figure 3–6) . . . . . . . . . . . . . . . . . 3-17
3–3.3 SWEEP and TRIGGER Keys and Indicators (Figure 3–7) . . 3-18
3–3.4 DATA ENTRY Keys, Indicators, and Control (Figure 3–8) . . 3-20
67XXB OM i

3–3.5 MODULATION and AM/FM Keys and MODULATION
Connectors (Figure 3-9) . . . . . . . . . . . . . . . . . . . . . . 3-21
3–3.6 MEASURE Key and Indicator (Figure 3–10) . . . . . . . . . . 3-22
3–3.7 LEVELING or EXT GAIN CAL Key, Indicators, and
Connector (Figure 3–11) . . . . . . . . . . . . . . . . . . . . . 3-23
3–3.8 RF LEVEL Keys and Indicators (Figure 3–12) . . . . . . . . . 3-23
3–3.9 RF Indicators and RF OUTPUT Connector (Figure 3–13) . . . 3-25
3–3.10 STORED SETUPS Keys (Figure 3–14) . . . . . . . . . . . . . . 3-25
3–3.11 FREQUENCY, MODULATION/ TIME, and LEVEL
Displays (Figure 3–15) . . . . . . . . . . . . . . . . . . . . . . 3-25
3–3.12 GPIB Indicators and BUS ADRS/ RETURN TO LCL
Key (Figure 3-16) . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
3–4 SELF-TEST FEATURE . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
3–5 REAR PANEL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 3-26
SECTION IV — GPIB OPERATION
4-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-2 DESCRIPTION OF THE IEEE-488 (IEC-625) INTERFACE BUS . . . . 4-3
4-2.1 Data Bus Description . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-2.2 Management Bus Description . . . . . . . . . . . . . . . . . . . 4-3
4-2.3 Data Byte Transfer Control (Handshake) Bus Description . . . 4-4
4-3 GPIB OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-4 COMMAND CODES, DESCRIPTION . . . . . . . . . . . . . . . . . . . 4-4
4-4.1 Command Codes: Inputting Restrictions and Notes . . . . . . . . 4-4
4-4.2 Command Codes: Parameter and Data Entry . . . . . . . . . . . 4-7
4-4.3 Command Codes: CW Frequency . . . . . . . . . . . . . . . . . . 4-9
4-4.4 Command Codes: Analog and Digital Sweep . . . . . . . . . . . 4-10
4-4.5 Command Codes: Frequency Marker . . . . . . . . . . . . . . . 4-13
4-4.6 Command Codes: Modulation Commands . . . . . . . . . . . . 4-13
4-4.7 Command Codes: Output Power Leveling . . . . . . . . . . . . 4-13
4-4.7A Command Codes: Measure Function . . . . . . . . . . . . . . . 4-16A
4-4.8 Command Codes: Output . . . . . . . . . . . . . . . . . . . . . 4-17
4-4.9 Command Codes: Stored Setup . . . . . . . . . . . . . . . . . . 4-19
4-4.10 Command Codes: Service Request (SRQ) and Status Byte . . . 4-20
4-4.11 Command Codes: Shift-Plus-Trigger Override . . . . . . . . . . 4-22
4-4.12 Command Codes: Group Execute Trigger Mode . . . . . . . . . 4-22
4-4.13 Command Codes: Fast Frequency . . . . . . . . . . . . . . . . 4-24
4-4.14 Command Codes: Self Test . . . . . . . . . . . . . . . . . . . . 4-24
4-4.15 Command Codes: Miscellaneous . . . . . . . . . . . . . . . . . 4-24
4-5 BUS MESSAGES, SYNTHESIZER RESPONSE TO . . . . . . . . . . 4-25
4-6 PROGRAM ERRORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
4-7 RESET PROGRAMMING AND DEFAULT CONDITIONS . . . . . . . 4-28
4-8 PROGRAMMING EXAMPLES . . . . . . . . . . . . . . . . . . . . . . 4-28
Paragraph Title Page
ii 67XXB OM

List of Figures
Figure Description Page
Figure 1-1. Typical Series 67XXB Swept Frequency Synthesizer . . . . . . 1-2
Figure 2-1. Synthesizer Rear Panel Showing LINE SELECT Switch . . . . . 2-3
Figure 2-2. GPIB Connector Panel . . . . . . . . . . . . . . . . . . . . . . . 2-4
Figure 3-1. Front Panel, 67XXB Swept Frequency Synthesizer . . . . . . . 3-2
Figure 3-2. Increasing a Parameter Using the
INCREASE DECREASE Knob . . . . . . . . . . . . . . . . . . . 3-7
Figure 3-3. External Gain Calibrate Procedure . . . . . . . . . . . . . . . 3-12
Figure 3-5. SELF TEST or RESET and LINE Keys . . . . . . . . . . . . . . 3-17
Figure 3-6. FREQ ENTRY Keys . . . . . . . . . . . . . . . . . . . . . . . 3-17
Figure 3-7. SWEEP and TRIGGER Keys and Indicators . . . . . . . . . . 3-18
Figure 3-8. DATA ENTRY Keys Indicators, and Control . . . . . . . . . . 3-20
Figure 3-9. MODULATION and EXT AM/FM Keys
and MODULATION Connectors . . . . . . . . . . . . . . . . . . 3-21
Figure 3-10. MEASURE Key and Indicator . . . . . . . . . . . . . . . . . . 3-22
Figure 3-11. LEVELING or EXT GAIN CAL Key, Indicators, and Connector . 3-23
Figure 3-12. RF LEVEL Keys and Indicators . . . . . . . . . . . . . . . . . 3-23
Figure 3-13. RF Indicators and RF OUTPUT Connector . . . . . . . . . . . 3-25
Figure 3-14. STORED SETUPS Keys . . . . . . . . . . . . . . . . . . . . . 3-25
Figure 3-15. FREQUENCY, MODULATION/TIME, and LEVEL Displays . . . 3-26
Figure 3-16. GPIB Indicators and BUS ADRS/RETURN TO LCL Key . . . . 3-26
Figure 3-17. Pinout Diagram for AUX I/O Connector . . . . . . . . . . . . . 3-27
Figure 3-18. Rear Panel, 67XXB Series Swept Frequency Synthesizers . . 3-28
Figure 4-1. Interface Connections and GPIB Bus Structure . . . . . . . . . 4-2
Figure 4-2. Typical Handshake Operation . . . . . . . . . . . . . . . . . . . 4-4
Figure 4-3. Using the SYZ (Size) Command . . . . . . . . . . . . . . . . . . 4-9
Figure 4-4. Example of a CW Frequency Command . . . . . . . . . . . . 4-10
Figure 4-4A Programming Example, DU1 . . . . . . . . . . . . . . . . . 4-12A
Figure 4-5. Example of a Sweep Command . . . . . . . . . . . . . . . . . 4-13
Figure 4-6. Example of Frequency Marker Programming . . . . . . . . . 4-14
Figure 4-7. Example of Power Level Programming . . . . . . . . . . . . . 4-16
Figure 4-8. Example of Output Command Programming . . . . . . . . . . 4-18
Figure 4-9. Status Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Figure 4-10 Status Byte Mask . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Figure 4-11. Reset Programming Statements . . . . . . . . . . . . . . . . . 4-29
Figure 4-12. Test Equipment Setup for Runing GPIB Program Examples . 4-29
67XXB OM iii

List of Tables
Table Description Page
Table 1-1. Test and Calibration Manual Part Numbers . . . . . . . . . . . 1-3
Table 1-2. Series 67XXB Models . . . . . . . . . . . . . . . . . . . . . . . 1-4
Table 1-3. Specifications for the Series 67XXB
Swept Frequency Synthesizers . . . . . . . . . . . . . . . . . . 1-5
Table 1-4. Recommended Test Equipment . . . . . . . . . . . . . . . . . 1-10
Table 2-1. WILTRON Service Centers . . . . . . . . . . . . . . . . . . . . 2-6
Table 3-1. RESET (Default) Parameters . . . . . . . . . . . . . . . . . . . 3-4
Table 4-1. 67XXB IEEE–488 Bus Subset Capability . . . . . . . . . . . . 4-5
Table 4-2. Command Code Classes . . . . . . . . . . . . . . . . . . . . . . 4-6
Table 4-3. Parameter Entry Commands . . . . . . . . . . . . . . . . . . . 4-7
Table 4-4. Data Entry Commands . . . . . . . . . . . . . . . . . . . . . . 4-8
Table 4-5. CW Frequency Commands . . . . . . . . . . . . . . . . . . . . 4-10
Table 4-6. Analog and Digital Sweep Commands . . . . . . . . . . . . . . 4-11
Table 4-7. Frequency Marker Commands . . . . . . . . . . . . . . . . . . 4-13
Table 4-8. Modulation Commands . . . . . . . . . . . . . . . . . . . . . . 4-14
Table 4-9. Power Leveling Commands . . . . . . . . . . . . . . . . . . . . 4-15
Table 4-10. Measure Function Commands . . . . . . . . . . . . . . . . . . 4-17
Table 4-11. Output Commands . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Table 4-12. Stored Setup Commands . . . . . . . . . . . . . . . . . . . . . 4-19
Table 4-13. Service Request (SRQ) Commands . . . . . . . . . . . . . . . . 4-20
Table 4-14. Shift-Plus-Trigger Routines Overide Commands . . . . . . . . 4-23
Table 4-15. Group Execute Trigger Commands . . . . . . . . . . . . . . . . 4-23
Table 4-16. Fast-Frequency-Switching Commands . . . . . . . . . . . . . . 4-24
Table 4-17. Self Test Commands . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Table 4-18. Miscellaneous Commands . . . . . . . . . . . . . . . . . . . . . 4-25
Table 4-19. Bus Messages Recognized by the 67XXA Series . . . . . . . . 4-25
Table 4-20. Methods of Generating Bus Commands . . . . . . . . . . . . . 4-27
Table 4-21. Resetting the 67XXB GPIB Interface Circuits . . . . . . . . . . 4-28
Table 4-22. Using the Output Identify Command . . . . . . . . . . . . . . 4-30
Table 4-23. Controlling CW Frequency/Parameter Entries . . . . . . . . . 4-31
Table 4-24. Controlling Power Level and Power Sweep . . . . . . . . . . . 4-32
iv 67XXB OM

SECTION I
GENERAL INFORMATION
CONTENTS
Paragraph Title Page
1-1 SCOPE OF THE MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 IDENTIFICATION NUMBER . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-4 RELATED MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-5 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-6 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-7 PERFORMANCE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 1-4
1-8 RECOMMENDED TEST EQUIPMENT . . . . . . . . . . . . . . . . . . 1-4
67XXB OM 1-1

Figure 1-1. Typical Series 67XXB Swept Frequency Synthesizer
1-2 67XXB OM

SECTION I
GENERAL INFORMATION
1-1 SCOPE OF THE MANUAL
This manual provides general, installation, and op-
eration information for all models in the Series
67XXB Swept Frequency Synthesizer family.
1-2 INTRODUCTION
Section I provides information about the equipment
identification number, performance specifications,
options, and related manuals.
1-3 IDENTIFICATION NUMBER
All WILTRON instruments are assigned a unique
six-digit ID number, such as “405001.” Each 67XXB
has two ID numbers assigned, one for the basic
frame and one for the RF deck. The ID number for
the RF deck is affixed to the outside of the rear
panel, while that for the basic frame is affixed to
chassis floor, below the swing-out RF deck. The RF
deck ID number, on the outside, is the primary
number. Please use it when ordering parts or corre-
sponding with the Customer Service department.
1-4 RELATED MANUALS
This is one of a three manual set that consists of an
Operating Manual (OM), a Test and Calibration
Manual (T&C), and a Maintenance Manual (MM).
The OM and MM provide coverage for all models in
the 67XXB series. Conversely, the T&Cs contain
model-dependent information. Because of this
model dependency there are nineteen different
T&Cs—one for each frequency model.
Maintenance Manual (MM). The MM supplies
service information (circuit descriptions, trou-
bleshooting data, schematics, and block diagrams)
and parts lists for all 67XXB models. The WILTRON
part number for the MM is 10370-10242.
Test and Calibration Manual (T&C). The T&C
provides performance verification test procedures,
calibration and adjustment procedures, and test re-
cords for a specific 67XXB model. The WILTRON
part numbers for all T&Cs are listed in Table 1-1.
1-5 DESCRIPTION
The Series 67XXB Swept Frequency Synthesizers
are microprocessor-based, GPIB, synthesized signal
sources that generate swept and CW frequencies
from 10 MHz to 60 GHz. The series, which will
expand as additional frequency ranges are added,
presently consists of 29 models covering a variety of
frequency and power ranges. Table 1-2 shows a list-
ing of all of the present models, their frequency
range, and their output power level.
67XXB Model
Numbers T&C Manual Part Number
6709B/–40 10370-10204
6717B/–20 10370-10206
6719B 10370-10208
6721B/–20 10370-10210
6722B/–20 10370-10212
6728B/–40 10370-10214
6729B/–20 10370-10216
6730B/–40 10370-10218
6736B/–10 10370-10220
6737B/–20 10370-10222
6740B 10370-10224
6745B 10370-10226
6747B/–20 10370-10228
6753B/–10 10370-10230
6759B/–10 10370-10232
6760B 10370-10240
6763B 10370-10234
6769B 10370-10236
6772B 10370-10238
Table 1-1. Test and Calibration Manual Part Numbers
67XXB OM 1-3