Wiltron 360B User manual

490 JARVIS DRIVE ● MORGAN HILL, CA 95037-2809
MODEL
360B
VECTOR NETWORK ANALYZER
SYSTEM MAINTENANCE MANUAL
P/N: 10410-00116
REVISION: D
PRINTED: SEPTEMBER 1995
COPYRIGHT 1992 WILTRON CO.

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.
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 WIL-
TRON 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 mainte-
nance 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 computer 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 written consent of WILTRON Company.
TRADEMARK ACKNOWLEDGEMENTS
V Connector and K Connector are registered trademarks of WILTRON Company.
GPC-7 is a registered trademark of Amphenol Corporation.
ANACAT is a registered trademark of EEsof, Inc.
Ink Jet and Think Jet are registered trademarks of Hewlett-Packard Co.
MS-DOS is a registered trademark of Microsoft Corporation.

MANUAL CHANGE
MANUAL:
Title: Model 360B System Maintenance Manual
Part Number: 10410-00116
Rev. Ltr/Date: D
CHANGE PACKET
Part Number: 10900-00176
INSTRUCTIONS
1. Make all changes, which are listed in numerical order by page number.
2. Replacement pages are provided for all changes. The black bar or bars in the margins of the replacement
page show the area in which the changes were made.
Change 1, November 1994
1. Pages 1-5 through 1-10
Replace pages 1-5 through 1-10 with the enclosed like-numbered pages, Changed: April 1996.
PCO 22454
360B MM C-1/C-2

TABLE OF CONTENTS
Chapter 1 — General Information
Provides general information about the 360B Vector Network Analyzer system, which includes a list
of related manuals, service information, static handling procedures, and a list of recommended test
equipment. Chapter contents are detailed immediately following the tab.
Chapter 2 — 360B VNA System
Describes overall operation, which includes an overall system block diagram. Chapter contents are
detailed immediately following the tab.
Chapter 3 — 360B VNA System Performance Tests
Describes performance tests for the three system configurations based on test set model:
361XA/362XA, 3630A/3631A, and 3635B. Chapter contents are detailed immediately following the
tab.
Chapter 4 — 360B VNA System Troubleshooting
Describes system troubleshooting tables for isolating problems to the malfunctioning major assembly.
Chapter contents are detailed immediately following the tab.
Chapter 5 — 360B VNA Information
Describes the VNA unit, which includes a block diagram. Also provides remove and replace proce-
dures. Chapter contents are detailed immediately following the tab.
Chapter 6 — 36XXA Test Sets, General Information
Provides description and remove and replace procedures for the test sets covered in this manual.
Chapter contents are detailed immediately following the tab.
Chapter 7 — 361XA/362XA Test Sets Information
Provides an overall description and block diagram of the Model 361XA/361XA Test Set, along with
descriptions of individual PCBs and RF components. Chapter contents are detailed immediately
following the tab.
Chapter 8 — 3630A/3631A Test Set Information
Provides an overall description and block diagram of the Model 3630A/3631A Test Set, along with
descriptions of individual PCBs and RF components. Chapter contents are detailed immediately
following the tab.
360B MM i

Table of Contents (Continued)
Chapter 9 — 3635B Test Set Information
Provides an overall description and block diagram of the Model 3635B Test Set, along with descrip-
tions of individual PCBs and RF components. Chapter contents are detailed immediately following
the tab.
Chapter 10 — 360SSXX Signal Source Information
Describes the 360SS47 and 360SS69 Signal Sources. Chapter contains full service and troubleshoot-
ing information, which includes description, block diagram, troubleshooting, performance tests,
adjustments, and remove and replace procedures. Chapter contents are detailed immediately
following the tab.
Appendix A — Model 363XA Test Set Operation
Provides operation information for the 3630A and 3631A Test Sets. Appendix contents are detailed
immediately following the tab.
Appendix B — 360ACM Auxiliary Control Module Maintenance Information
Describes the 360 ACM. Appendix contains full service and troubleshooting information, which
includes description, block diagram, troubleshooting, performance tests, adjustments, and remove
and replace procedures. Appendix contents are detailed immediately following the tab.
Subject Index
Provides a subject index.
ii 360B MM

Table of Contents
1-1 SCOPE OF MANUAL . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 IDENTIFICATION NUMBER . . . . . . . . . . . . . . . . . . 1-3
1-4 RELATED MANUALS . . . . . . . . . . . . . . . . . . . . . . 1-3
1-5 SERVICE INFORMATION . . . . . . . . . . . . . . . . . . . . 1-5
Static Handling . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
1-6 RECOMMENDED TEST EQUIPMENT . . . . . . . . . . . . 1-12
Chapter 1
General Information

Figure 1-1. Model 360B Vector Network Analyzer System (Shown installed in
Model 360C1 System Console

Chapter 1
General Information
1-1 SCOPE OF MANUAL This manual provides general and service information for the Model
360B Vector Network Analyzer (VNA) system (Figure 1-1). (Through-
out this manual, the terms 360B VNA and 360B will be used inter-
changeably to refer to the system.) Manual organization is shown in
the narrative Table of Contents that precedes this chapter. The infor-
mation in this manual provides for fault isolation to the assembly level
for system instruments. Covered instruments consist of network ana-
lyzer, signal (frequency) source, test sets, and 360ACM used with the
3635B mm-wave test set.
1-2 INTRODUCTION This chapter provides general information about the 360B VNA sys-
tem. It also provides replaceable-assembly information and a listing of
recommended test equipment for servicing 360B VNA system instru-
ments.
1-3 IDENTIFICATION NUMBER All WILTRON instruments are assigned a unique six-digit ID number,
such as “701001.” This number is affixed to a decal on the rear panel of
each unit. In any correspondence with either WILTRON Customer
Service or your Anritsu/Wiltron Service Center, please use this number.
NOTE
The system operating software is keyed to the analyzer
identification number. For systems having certain option
installed, the operating-system will only load on the serial-
numbered 360B for which the software is identified.
1-4 RELATED MANUALS Manuals related to the operation and maintenance of the 360B VNA
system are listed in Table 1-1. This table also lists the 360B VNA
optional equipment manuals.
360B MM 1-3

Title Description Part Number
Model 360B
Vector Network
Analyzer Operating
Manual
Provides operating information for the 360B
VNA. 10410-00110
Model 360B
Vector Network
Analyzer Getting
Started Guide
Provides a tutorial for quickly getting started
making measurements with the 360 VNA
system. Manual is bound with the 360B OM,
but can be ordered separately.
10410-00111
Model 360B Vector
Network Analyzer
GPIB Programming
Manual
Provides programming information for the
360B GPIB interface. 10410-00113
360B GPIB
Quick Reference
Guide
Alphabetically list and briefly describes all
360B GPIB commands. Provides references
to fuller command descriptions located in
360B GPIB PM. Manual is bound with the
360B GPIB PM, but can be ordered
separately.
10410-00114
Model 36XX
Calibration and
Verification Kit
Operation and
Maintenance Manual
Provides operating instructions and
maintenance information for the Models
3650, 3651, 3652, 3653, and 3654
Calibration Kits and the Models 3666, 3667,
3668, and 3669 Verification Kits.
10100-00024
Table 1-1. List of Related Manuals
RELATED GENERAL
MANUALS INFORMATION
1-4 360B MM

1-5 SERVICE INFORMATION Module
Exchange
Program.
WILTRON Customer Service and the Anritsu/Wil-
tron Service Centers provides an module exchange
program that includes the parts and assemblies
listed in Table 1-2.
WILTRON
Part Number Description
360 Vector Network Analyzer
D14364-3 A1 LO 1 Phase Lock PCB Assembly
D14351-3 A2 LO 2 Phase Lock PCB Assembly
D14366-3 A3 Cal/3rd L.O. PCB Assembly
D14352-3 A4 A/D Converter PCB Assembly
D34355-3 A5 10 MHz Reference PCB Assembly
D34605-3 A6 Source Lock PCB Assembly
D14353-4 A7 Synchronous Detector APCB Assembly
D14353-5 A8 Synchronous Detector B PCB Assembly
D14353-6 A9 Synchronous Detector R PCB Assembly
D34624-3 A10 Blanking/Synchronous PCB Assembly
D37995-3 A11 I/O VGAProcessor PCB Assembly
D34520-3 A12 Main 2 Processor PCB Assembly
D38057-3 A13 Main 1 Processor PCB Assembly
D34680-3 A14 Power Supply Control PCB Assembly
D36965-3 A15 Power Supply Convertor PCB Assembly
D37574-3 A16 Test Set I/O PCB Assembly
D34656-3 A18 Power Supply Motherboard
ND39332 Front Panel Assembly 360B, includes disk drive
ND39331 Color Display VGA Assembly
Table 1-2. Exchangeable Subassemblies, 1 of 6
GENERAL SERVICE
INFORMATION INFORMATION
360B MM 1-5
Changed: April 1996

WILTRON
Part Number Description
36xxA Series Test Sets
D30701-4 A1T IF Amplifier, Channel B PCB Assembly
D34519-3 A2T IF Amplifier, Reference Channel PCB Assembly
D30701-5 A3T IF Amplifier, Channel APCB Assembly
D30704-3 A4T LO 2 PCB Assembly
D34603-3 A5T LO 1 PCB Assembly
D34760-3 A5T Power Distribution PCB Assembly, 3635B
D37611-3 A6T Digital Interface PCB Assembly
D34636-3 A7T Attenuator Driver PCB Assembly
D35558-3 A27T Amplifier/Switch Driver PCB Assembly
3600 RF Components, 20 GHz and below
D21852 A8T Buffer Amplifier Assembly, Channel B, 3610A, 3620A
D21851 A10T Buffer Amplifier Assembly, Channel A, 3610A, 3620A
D15320-1 A12T Power Amplifier Assembly
B19820-1 A13T Transfer Switch, with cable, 3610A, 3620A
D20363 A14T/A15T Coupler, 3610A, 3620A
C21586 A18T/A19T Bias Tee, Female - Female
C21587 A18T/A19T Bias Tee, Male - Female
4412K A20T/A21T/A22T Step Attenuator, 70 dB, 20 GHz
ND39330 A24T Source Lock / Reference Select Assembly
D17900 A25T RF Splitter
3600 RF Components, 40 GHz and below
D21854 A8T Buffer Amplifier Assembly Channel B,
3611A, 3621A, 3630A
D21853 A10T Buffer Amplifier Assembly, Channel A,
3611A, 3621A, 3630A
Table 1-2. Exchangeable Subassemblies, 2 of 6
SERVICE GENERAL
INFORMATION INFORMATION
1-6 360B MM
Changed: April 1996

WILTRON
Part Number Description
D21853 A10T Buffer Amplifier Assembly Channel A,
3611A, 3621A, 3630A
D15320-1 A12T Power Amplifier Assembly
D27030-1 A13T Transfer Switch, D27030 with cable, 3611A, 3621A
D15825 A14T/A15T Coupler, 3611A, 3621A
C21586 A18T/A19T Bias Tee, Female - Female
C21587 A18T/A19T Bias Tee, Male - Female
4612K A20T/A21T/A22T Step Attenuator, 70 dB, 40 GHz
ND39330 A24T Source Lock / Reference Select Assembly
3600 RF Components, 60 GHz
D21856 A8T Buffer Amplifier Assembly. Channel B
C21421 A8T Buffer Amplifier Assembly, Channel B
D21855 A10T Buffer Amplifier Assembly, Channel A
C21420 A10T Buffer Amplifier Assembly, Channel A
D21405-1 A12T Power Amplifier / Multiplier Assembly, D21405 with cable
D21350-1 A13T Transfer Switch, D21350 with cable
D20600 A14T/A15T Coupler, 60 GHz
D22811 A14T/A15T Coupler 62.5 GHz
V250 A18T/A19T Bias Tee, 60 GHz
4712V A20T/A21T/A22T Step Attenuator, 70 dB, 60 GHz
ND39330 A24T Source Lock / Reference Select Assembly
D21395 A25T RF Splitter
D21360 A28T/A29T SPDT/Splitter
C23356 A30T Channel B Tripler Assembly, 60 GHz, Includes 1000-37
Isolator, 1040-15 Tripler, D21319 Mux coupler, C21372 Amplifier
and C21382 High Pass Filter. This must be replaced as an entire
assembly.
Table 1-2. Exchangeable Subassemblies, 3 of 6
GENERAL SERVICE
INFORMATION INFORMATION
360B MM 1-7
Changed: April 1996

*These components are not on the module exchange program; however, they may be ordered as standard replacement parts.
** Requires factory installation and test. Not available for field service use.
WILTRON
Part Number Description
C23361 A30T Channel B Tripler Assembly, 62.5 GHz. Includes 1000-37
Isolator, 1040-15 Tripler, D21319 Mux coupler, C21372 Amplifier
and C21382 High Pass Filter. This must be replaced as an entire
assembly.
C23355 A31T Channel A Tripler Assembly, 60 GHz. Includes 1000-37
Isolator, 1040-15 Tripler, D21319 Mux coupler, C21372 Amplifier
and C21382 High Pass Filter. This must be replaced as an entire
assembly.
C23360 A31T Channel A Tripler Assembly, 62.5 GHz. Includes 1000-37
Isolator, 1040-15 Tripler, D21319 Mux coupler, C21372 Amplifier
and C21382 High Pass Filter. This must be replaced as an entire
assembly.
3600 RF Components, 65 GHz
D39098-5 A27T Amplifier/Switch Driver PCB Assembly
D27424 A31T Channel ATripler Assembly, 65 GHz. Includes 1040-17 Tripler,
D26224 Mux coupler, C25593 Amplifier and other components. This
must be replaced as an entire assembly. **
D27426 A31T Channel A Tripler Assembly, 67GHz.
C27425 A30T Channel B Tripler Assembly, 65 GHz. Includes 1040-17
Tripler, D26225 Mux coupler, C25593 Amplifier and other
components. This must be replaced as an entire assembly. **
C27427 A30T Channel B Tripler Assembly, 67 GHz.
D21360 A25T RF Splitter
D26219 A12T Power Amplifier / Multiplier Assembly **
D26222 A10T Buffer Amplifier Assembly, Channel A**
D26223 A8T Buffer Amplifier Assembly. Channel B **
ND26180 A14T/A15T Coupler 65 GHz
ND26179 A20T/A21T/A22T Step Attenuator, 70 dB, 65 GHz
ND26181 A18T/A19T Bias Tee, 65 GHz
B39096* Cable Assembly, Auxiliary Power
551-1095* Auxiliary Power Connector (rear panel)
Table 1-2. Exchangeable Subassemblies, 4 of 6
SERVICE GENERAL
INFORMATION INFORMATION
1-8 360B MM
Changed: April 1996

*These components are not on the module exchange program; however, they may be ordered as standard replacement parts.
WILTRON
Part Number Description
40-56* Auxiliary Power Supply (USA)
40-57* Auxiliary Power Supply (UK)
40-58* Auxiliary Power Supply (Europe)
3635B Millimeter VNA RF Components
1091-87 A11T Power Splitter
C21660 A20T RF Input Amplifier, 11–20 GHz
D23385 A21T/A22T LO Amplifier, 8–15 GHz
D21925-1 A9T Transfer Switch
D23690 A10T Channel ABuffer/Amplifier Assembly
D23691 A8T Channel B Buffer/Amplifier Assembly
360 ACM
D37719-3 A100 PCB Assembly
ND39314 15 Volt PSU Assembly
B37863 12 Volt PSU Assembly
360SS Series System Source
D32101-3 A1 GPIB PCB Assembly
ND34470 A4 ALC PCB and Coupler Assembly, 360SS47
ND35979 A4 ALC PCB and Coupler Assembly, 360SS69
D32205-3 A5 Frequency Instruction PCB Assembly
D34710-11 A10 FM PCB Assembly
D37920-3 A13 Power Supply PCB Assembly
360SS RF Components
60-102 Frequency Doubler Amplifier, 360SS69
ND39322 Down Converter Assembly, cabled C8090-5
ND39329 PIN Switch Assembly, 360SS69
ND39325 DPDT PIN Switch, 8-26.5 GHz
Table 1-2. Exchangeable Subassemblies, 5 of 6
GENERAL SERVICE
INFORMATION INFORMATION
360B MM 1-9
Changed: April 1996

Static
Handling Figure 1-2 provides procedures that should be fol- lowed when handling static sensitive parts.
CAUTION
WILTRON highly recommends that you use
a grounded wrist strap when handling 360B
VNA System PCBs and components. The
360B VNA system contains parts that can be
damaged by static electricity.
SERVICE GENERAL
INFORMATION INFORMATION
WILTRON
Part Number Description
D18696 PIN Switch Assembly, 360SS47
ND31355 13.25 to 20 GHz Amplifier, 360SS69
ND19075 18 to 26.5 GHz Amplifier, 360SS69
ND35918 2 to 8 GHz Oscillator Assembly, 360SS47
ND35919 2 to 8 GHz Oscillator Assembly, 360SS69
ND35934 8 to 12.4 GHz Oscillator Assembly, 360SS47
ND35935 8 to 12.4 GHz Oscillator Assembly, 360SS69
ND35950 12.4 to 20 GHz Oscillator Assembly, 360SS47
ND35951 12.4 to 18 GHz Oscillator Assembly, 360SS69
ND35958 18 to 26.5 GHz Oscillator Assembly, 360SS69
C20812 Output Connector Assembly
Table 1-2. Exchangeable Subassemblies, 6 of 6
1-10 360B MM
Changed: April 1996

1. Do not touch exposed contacts on
any static sensitive component. 2. Do not slide static sensitive component across any surface. 3. Do not handle static sensitive components in areas where the floor
or work surface covering is capable
of generating a static charge.
4. Wear a static-discharge wristband
when working with static sensitive
components.
5. Label all static sensitive devices. 6. Keep component leads shorted
together whenever possible.
7. Handle PCBs only by their edges. Do
not handle by the edge connectors. 8. Lift & handle solid state devices by their bodies – never by their leads. 9. Transport and store PCBs and other static sensitive devices in static-
shielded containers.
10. ADDITIONALPRECAUTIONS:
•Keep workspaces clean and free of any objects capable of holding or storing a static charge.
•Connect soldering tools to an earth ground.
•Use only special anti-static suction or wick-type desoldering tools.
Figure 1-2. Static Handling Procedures
SERVICE GENERAL
INFORMATION INFORMATION
360B MM 1-11

1-6 RECOMMENDED TEST
EQUIPMENT
Table 1-3 lists the recommended test equipment for maintaining and
servicing the 360B VNA system.
Instrument Critical Specification Recommended Manufacturer/Model
Spectrum
Analyzer,
with
Diplexer and
External
Mixers
Frequency: 0.01 to 60 GHz
Resolution: 10 Hz Tektronix, Inc. Model 494P,with
External Mixers:
WM 490K (18 to 26.5 GHz)
WM 490A (26.5 to 40 GHz)
WM 490U (40 to 60 GHz)
WM 490V (50 to 60 GHz)
Diplexer PN: 015-0385-00
Power Meter,
with
Power
Sensors
Range: –30 to +20 dBm
(1µW to 100 mW)
Other: GPIB-controllable
Hewlett-Packard Model 437B, with
Option 22 (GPIB), and
Power Sensors:
HP 8485A (0.01 to 26.5 GHz)
HP 8487A (0.05 to 50 GHz)
Digital
Multimeter
Resolution: 4-1/2 digits
DC Accuracy: 0.002% +2
counts
DC Input Z: 10 MΩ
AC Accuracy: 0.07% +100
counts (to 20 kHz)
AC Input Z: 1 MΩ
John Fluke, Inc. Model 8840A, with
Option 8840A-09 (True RMS AC)
Frequency
Counter,
with
External
Mixers
Range: 0.01 to 60 GHz
Input Z: 50 Ω
Resolution: 1 Hz
Other: External Time Base
Input
EIP Microwave, Inc. Model 578A,
with
External Mixers:
Option 91 (26.5 to 40 GHz)
Option 92 (40 to 60 GHz)
Option 93 (60 to 90 GHz)
Oscilloscope
Bandwidth: DC to 150 MHz
Vertical Sensitivity: 2 mV/
division
Horiz Sensitivity: 50 ns/
division
Tektronix, Inc. Model 2445
Function
Generator
Output Voltage Range:
300 mV to 10V
Functions:
200 Hz Sine Wave
100 Hz Square Wave
Hewlett-Packard Model 3325A
Local
Oscillator
(LO) Test
Fixture
N/A WILTRON
T1512 (Figure 1-3)
PCB
Extender Card N/A WILTRON Part Number: D30709-3
Table 1-3. Recommended Test Equipment (1 of 2)
SIGNAL
INPUT
Figure 1-3. WILTRON T1512
360B Test Fixture
RECOMMENDED GENERAL
TEST EQUIPMENT INFORMATION
1-12 360B MM

Instrument Critical Specification Recommended Manufacturer/Model
Test Cables N/A WILTRON
Part Number: ND34060
Measurement
Calibration Kit Kit contains high-precision opens, shorts, broadband
loads, and sliding load
WILTRON Company
Model 3650, 3651, 3652, 3653 or
3654/3654B* (Included with Model
360B VNA System)
Measurement
Calibration Kit Q-, U-, V-, or W-band waveguide components
(For use with Model 3635B
Test Set, only)
WILTRON Company
3655Q, 3655U, 3655V, or 3655W,
depending on Model 364XB-X
Module being used. (Included with
Model 360B VNA System)
Microwave
Cable Frequency: 18, 40, 60, or 65 GHz, depending on
connector type
WILTRON Company
3670X50*-1 and -2 (X = K, A, or V,
depending on test set connector
type)
Assurance
Air Line Frequency: 60 GHz WILTRON Company Part Number:
T1519 (K Connector, female)
T1520 (3.5 mm, female)
T1521 (V Conn, female–60 GHz)
T1542 (V Conn, female–65 GHz)
Precision
Offset
Termination
Frequency: 40 GHz WILTRON Company
29X50-15 (X = K, A, depending on
test set connector type)
Precision
Offset
Termination
Frequency: 60 or 65 GHz WILTRON Company
Part Number: SC4417 (60 GHz)
Part Number: SC4732 (65 GHz)
∗Operation to 65 GHz with “B” versions of these products
Table 1-3. Recommended Test Equipment (2 of 2)
GENERAL RECOMMENDED
INFORMATION TEST EQUIPMENT
360B MM 1-13/1-14

Table of Contents
2-1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-2 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . 2-4
2-3 SYSTEM COMPONENTS . . . . . . . . . . . . . . . . . . . . 2-4
Signal Source . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
The Test Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
VNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-4 SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . 2-7
Chapter 2
360B VNA System

Chapter 2
360B VNA System
2-1 INTRODUCTION This chapter describes the Model 360B Vector Network Analyzer Sys-
tem. The description is organized into an overall description, a descrip-
tion of system components, and a discussion on system operation.
Chapters 3 and 4 respectively provide information for verifying per-
formance and troubleshooting the system.
360B MM 2-3