Anritsu Rubidium MG362 1A Series User manual

Maintenance Manual
Rubidium™ MG362x1A Series
Low-Noise RF/Microwave Signal
Generators
MG36221A, 9 kHz to 20 GHz
MG36241A, 9 kHz to 43.5 GHz
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
Part Number: 10370-10386
Revision: B
Published: May 2022
Copyright 2022 Anritsu Company

Notes On Export Management
This product and its manuals may require an Export License or approval by the government of the product country of
origin for re-export from your country.
Before you export this product or any of its manuals, please contact Anritsu Company to confirm whether or not these
items are export-controlled.
When disposing of export-controlled items, the products and manuals need to be broken or shredded to such a degree
that they cannot be unlawfully used for military purposes.
Updates
Updates, if any, can be downloaded from the Documents area of the Anritsu web site at:
http://www.anritsu.com
For the latest service and sales contact information in your area, please visit:
http://www.anritsu.com/Contact-US/

MG362x1A MM PN: 10370-10386 Rev. B Contents-1
Table of Contents
Chapter 1 — General Information
1-1 Scope of Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Document Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-4 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-5 Identification Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-6 Contacting Anritsu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-7 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-8 Level of Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-9 ESD Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2 — Functional Description
2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 Major Subsystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Digital Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Frequency Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
YIG Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
ALC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
RF Deck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Motherboard/Interconnections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-3 Frequency Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
9 kHz to 2.2 GHz Digital Down Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
RF Outputs 2.2 GHz to 20 GHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
20 to 43.5 GHz (Model MG36241A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Frequency Extension Module (FEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Frequency Switching Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Step Sweep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-4 Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Amplitude Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Pulse Modulation Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Pulse Generator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Frequency Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Phase Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Contents-2 PN: 10370-10386 Rev. B MG362x1A MM
Table of Contents (Continued)
2-5 ALC Loop Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
External Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
ALC Slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Power Sweep. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2-6 RF Deck Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
RF Deck Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
YIG-tuned Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
RF Signal Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Step Attenuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Block Diagram (Without Option 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Block Diagram (Option 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Chapter 3 — Calibration
3-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Test Equipment List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Maximum Permissible Tolerance of Return Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-3 Anritsu Test Executive (ATE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3-4 Station Asset Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Station Asset Utility Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Enter Test Equipment Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Set the Communication Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
ATE Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3-5 Initial Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3-6 Harmonics and Spurious Signals Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3-7 Single Sideband Phase Noise Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3-8 Power Level Accuracy and Flatness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3-9 Pulse Modulation Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
External Pulse Reference Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
External Pulse Reference Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
External Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Internal Pulse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
External Video FeedThru. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Internal Video FeedThru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

MG362x1A MM PN: 10370-10386 Rev. B Contents-3
Table of Contents (Continued)
3-10 Amplitude Modulation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
AM Meter Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
AM Internal Source Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
AM_Cal_DAC Linear Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
AM_Cal_DAC LOG Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
AM External Mod Linear Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
AM External Mod LOG Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
AM SEN_DAC Setting (External Source LOG Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
ALC Gain Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
3-11 FM and Phase Modulation Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Ext FM ADC Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Ext FM ADC Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Ext FM Input Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
Rear Panel FM Waveform Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
LNFM Tune Gain and FM Delay for YIG Low Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
LNFM Tune Gain for YIG High Band. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Wide FM Tune Gain for YIG Low Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
Wide FM Tune Gain for YIG High Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35
Chapter 4 — Performance Verification
4-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Test Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-3 Connector and Key Notation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-4 Measurement Uncertainty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-5 Test Equipment List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-6 Measurement Uncertainty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-7 Internal Time Base Aging Rate Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Internal Time Base Aging Rate Test with Absolute Time Model 300 . . . . . . . . . . . . . . . . . 4-7
Internal Time Base Aging Rate Test with Symmetricom (Datum) Model 9390-9600 . . . . . 4-8
4-8 Spurious Signals Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Harmonic Test Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Harmonic Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Non-Harmonic Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Non-Harmonic Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4-9 Single Sideband Phase Noise Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4-10 Power Level Accuracy and Flatness Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Power Level Log Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Power Level Accuracy ( –50 dBm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Power Level Accuracy (< –50 dBm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Power Level Flatness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Maximum Leveled Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
4-11 FM Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29

Contents-4 PN: 10370-10386 Rev. B MG362x1A MM
Table of Contents (Continued)
4-12 Max FM Deviation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Ext Low Noise FM Max Deviation – Mod rates up to 1 MHz . . . . . . . . . . . . . . . . . . . . . . . 4-31
Int Low Noise FM Max Deviation – Mod rates up to 1 MHz. . . . . . . . . . . . . . . . . . . . . . . . 4-33
Ext Low Noise FM Max Deviation – Mod Rates > 1 MHz . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Int Low Noise FM Max Deviation – Mod rates > 1 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Ext Wide FM Max Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Int Wide FM Max Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
4-13 Min FM Deviation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Ext Low Noise FM Min Deviation (at 1vpk input) 5 GHz test . . . . . . . . . . . . . . . . . . . . . . . 4-39
Int Low Noise FM Min Deviation 5 GHz test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
4-14 FM Flatness Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
FM Highpass Filter 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Ext Low Noise FM Flatness and 3 dB BW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Int Low Noise FM Flatness and 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43
Ext Wide (unlocked) FM 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
4-15 FM Deviation Accuracy Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
Ext Low Noise FM Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
Int Low Noise FM Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
Ext Wide (unlocked) FM Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
Int Wide (unlocked) FM Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
4-16 FM Harmonic Distortion Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
Ext Low Noise FM THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
Int Low Noise FM THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
4-17 FM Mode Residual FM and Incidental AM Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Ext Low Noise FM Mode Residual FM / Incidental AM . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
4-18 FM Mode Carrier Offset relative to CW mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
Ext Low Noise FM Mode Carrier Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
Perform Ext FM Offset Calibration to Minimize DC Offsets. . . . . . . . . . . . . . . . . . . . . . . . 4-53
Int Low Noise FM Mode Carrier Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
4-19 Phase Mod - Max Deviation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54
Ext Low Noise ΦM - Max Phase Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54
Int Low Noise ΦM - Max Phase Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57
Ext Wide ΦM - Max Phase Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58
Modulation Index Calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
4-20 Phase Mod - Min Phase Deviation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
Ext Low Noise ΦM Min Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
Int Low Noise ΦM Min Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
4-21 Phase Mod - Flatness Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
Ext Low Noise ΦM Flatness and 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
Measurement Uncertainties and Test Limits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
Int Low Noise ΦM Flatness and 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67
Measurement uncertainties and test limits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67
Ext Wide ΦM 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
Measurement uncertainties and test limits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
Int Wide ΦM 3 dB BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72

MG362x1A MM PN: 10370-10386 Rev. B Contents-5
Table of Contents (Continued)
4-22 Phase Mod - Deviation Accuracy Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
Ext Low Noise ΦM - Phase Deviation Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
Int Low Noise ΦM - Phase Deviation Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75
Ext Wide ΦM – Phase Deviation Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75
Int Wide ΦM - Phase Deviation Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
4-23 Rear Panel FM-Out Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77
FM-Out Accuracy, Ext FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77
FM Out” Flatness, Ext FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78
4-24 Amplitude Modulation Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79
AM Meter Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-80
AM Depth Indicator Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-81
AM Internal Source Verification (Linear Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-81
AM SEN_DAC Settings (Internal Source) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
AM External Mod Linear Verification (Linear Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
AM SEN_DAC Setting (External Source Linear Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-83
AM External Mod LOG Verification (Linear Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-83
4-25 Pulse Modulation Tests with the Sampling Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84
Pulse Rise Time, Fall Time and Overshoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-85
Pulse Power Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-87
Pulse On/Off Ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-89
4-26 Pulse Modulation Tests with the 86100C Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-91
Pulse Rise Time, Fall Time and Overshoot Measurement . . . . . . . . . . . . . . . . . . . . . . . . 4-92
Pulse Power Accuracy Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-94
Pulse On/Off Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-96
Chapter 5 — Troubleshooting
5-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Self-Test Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-3 MG362x1A Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-4 Main Board Designator Pin-outs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5-5 Basic Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5-6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Malfunctions Not Displaying an Error Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
MG362x1A Does Communicate Via Ethernet Connection . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5-7 Self Test Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
System Messages that Display Fail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Contents-6 PN: 10370-10386 Rev. B MG362x1A MM
Table of Contents (Continued)
5-8 SG Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
MOD Supply Voltage Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
ALC Temperature Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
YIG Temperature Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
SWF Errors (Switched Filter Errors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
REG Errors (Regulator Errors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
The OCXO module is Not Phase-locked to the External 10 MHz Reference. . . . . . . . . . . 5-16
The Hi-Performance Reference Not Phase-Locked to the External 100 MHz Reference. 5-17
The MG362x1A Displays Lock Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
ALC Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Output Power Level Related Problems in the DDC (9 kHz to 2.2 GHz) . . . . . . . . . . . . 5-18
Output Power Level Related Problem Above 20 GHz . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
AM Meter or Associated Circuitry Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Internal FM or Φ Modulation Circuitry Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Pulse Circuitry Failed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Chapter 6 — Assemblies Removal and Replacement
6-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2 Replaceable Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-3 Adjustment and Verification After Replacing an Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-4 Semi-Rigid Cable Installation (Standard Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6-5 SMA Cable Installation (Standard Model). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6-6 Frequency Extension Module (FEM) Cable Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6-7 Option 13 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
6-8 Option 3 and Option 56 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6-9 Option 23 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
6-10 Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Remove the Handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Remove the Rear Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Remove the Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
Remove the Top Sub-panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Remove Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Remove the Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Remove the Rear Panel BNC PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Remove the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Remove the Sub-panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Remove the Standard Reference Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Remove the Modules with Mounting Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Remove the YIG Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Remove the Modules with Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Remove the Dielectric Resonator Oscillator (DRO) (Option 13) . . . . . . . . . . . . . . . . . . . . 6-28
Remove the Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Appendix A — Test Records

MG362x1A MM PN: 10370-10386 Rev. B Contents-7
Table of Contents (Continued)
A-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-2 Uncertainty Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-3 Adapter, Attenuator and Cable Insertion Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-4 Test Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Contents-8 PN: 10370-10386 Rev. B MG362x1A MM
Table of Contents (Continued)
A-5 Technical Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Internal Time Base Aging Rate Test (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Harmonics and Harmonically Related Signal Test Records . . . . . . . . . . . . . . . . . . . . . . . . A-3
Harmonics and Harmonically Related Signal Test Records . . . . . . . . . . . . . . . . . . . . . . . . A-4
Section 3-8 Non-Harmonic Testing (Part 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Section 3-8 Non-Harmonic Testing (Part 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Single Sideband Phase Noise Test (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11
SSB Phase Noise (Option ___) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14
Power Line & Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-17
Power Level Log Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-19
Power Level Accuracy Test (10 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21
Power Level Accuracy Test (15 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-22
Power Level Accuracy Test (60 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-23
Power Level Accuracy Test (500 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-24
Power Level Accuracy Test (600 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-25
Power Level Accuracy Test (1.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-26
Power Level Accuracy Test (2.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-27
Power Level Accuracy Test (4.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-28
Power Level Accuracy Test (6.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-29
Power Level Accuracy Test (8.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-30
Power Level Accuracy Test (10.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-31
Power Level Accuracy Test (12.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-32
Power Level Accuracy Test (14.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-33
Power Level Accuracy Test (16.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-34
Power Level Accuracy Test (18.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-35
Power Level Accuracy Test (20.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-36
Power Level Accuracy Test (22.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-37
Power Level Accuracy Test (24.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-38
Power Level Accuracy Test (27.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-39
Power Level Accuracy Test (28.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-40
Power Level Accuracy Test (30.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-41
Power Level Accuracy Test (32.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-42
Power Level Accuracy Test (34.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-43
Power Level Accuracy Test (36.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-44
Power Level Accuracy Test (38.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-45
Power Level Accuracy Test (40.0 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-46
Power Level Accuracy Test (43.5 GHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-47
Power Level Flatness Test (No Option 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-48
Power Level Flatness Test (No Option 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-49
Power Level Flatness Test (Option 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-50
Power Level Flatness Test (Option 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-51
Maximum Leveled Power Test (Without Option 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-52
Maximum Leveled Power Test (Without Option 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-53
Maximum Leveled Power Test (With Option 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-54
Maximum Leveled Power Test (Without Option 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-55
Frequency Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-56
Frequency Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-57

MG362x1A MM PN: 10370-10386 Rev. B Contents-9
Frequency Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-58
Frequency Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-59
Frequency Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-60
Frequency Modulation Test (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-61
Amplitude Modulation Test (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-62
Pulse Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-65
Pulse Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-66
Pulse Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-67
Pulse Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-68
Pulse Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-69
Pulse Modulation Tests (Option 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-70
Appendix B — Instrument Messages
B-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B-2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B-3 Informational Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
B-4 Warning Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
B-5 Self Test Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Contents-10 PN: 10370-10386 Rev. B MG362x1A MM

MG362x1A MM PN: 10370-10386 Rev. B 1-1
Chapter 1 — General Information
1-1 Scope of Manual
This manual provides service information for the MG362x1A signal generators unless otherwise stated. The
service information includes replaceable parts information, troubleshooting, performance verification tests,
calibration procedures, functional circuit descriptions and block diagrams, and assembly/subassembly removal
and replacement.
Throughout this manual, the terms MG362x1A, synthesizer, or signal generator are used to refer to the
instrument. Otherwise, the full model number is used where applicable. Manual organization is shown in the
table of contents.
1-2 Document Format
The Online copy of this maintenance manual is available as part of a PDF portfolio that includes a text file and
a Microsoft Excel file, which are referenced in “Measurement Uncertainties and Test Limits:” on page 4-65.
You may need to install the latest version of Adobe Flash Player for the PDF portfolio to display the links to all
included files.
1-3 Introduction
This chapter provides a general description of the MG362x1A identification numbers, related manuals, and
options. Information is included concerning level of maintenance, replaceable subassemblies and RF
components, exchange assembly program, and preventive maintenance. Static-sensitive component handling
precautions and lists of exchangeable subassemblies and recommended test equipment are also provided.
1-4 Description
The series MG362x1A is a microprocessor-based, synthesized signal source with high resolution phase-lock
capability. It generates both discrete CW frequencies and broad (full range) and narrow band step sweeps
across the frequency range of 9 kHz to 43.5 GHz.
All functions of the CW generator are fully controllable locally from the front panel or remotely (except for
power on/standby) via Ethernet (Sockets over TCP/IP) or GPIB (IEEE-488 interface bus). The technical data
sheet (PN: 11410-00928) is available Online. Updates to this manual and the technical data sheet, if any, may
be downloaded from the Anritsu web site at:
http://www.anritsu.com.
1-5 Identification Number
All Anritsu instruments are assigned a unique six-digit ID number, such as “050101.” The ID number is
imprinted on a decal that is affixed to the rear panel of the instrument.
When ordering parts or corresponding with Anritsu customer service, please use the correct serial number
with reference to the specific instrument’s model number (i.e., model MG36221A Signal Generator, and
Serial No. 050101.

1-6 Contacting Anritsu General Information
1-2 PN: 10370-10386 Rev. B MG362x1A MM
Additional Documentation
1-6 Contacting Anritsu
To contact Anritsu, please visit:
https://www.anritsu.com/test-measurement/contact-us
From here, you can select the latest sales, select service and support contact information in your country or
region, provide Online feedback, complete a "Talk to Anritsu" form to have your questions answered, or obtain
other services offered by Anritsu.
Updated product information can be found on the Anritsu web site:
http://www.anritsu.com/
1-7 Options
The options available for the Anritsu MG362x1A series signal generators are described in the technical data
sheet (PN: 11410-00928), located in Appendix B of the print manual and Online at the Anritsu web site.
1-8 Level of Maintenance
Maintenance of the MG362x1A consists of:
•Preventive maintenance
•Calibration
•Troubleshooting the instrument to a replaceable subassembly or RF component
•Repair by replacing the failed subassembly or RF component.
Preventive Maintenance
The MG362x1A signal generator care and preventive maintenance consists of cleaning the unit and inspecting
and cleaning the RF connectors on the instrument and all accessories. Clean the signal generator with a soft,
lint-free cloth dampened with water or water and a mild cleaning solution.
Cleaning the Fan Grill
The signal generator must always receive adequate ventilation. A blocked fan grill can cause the instrument to
overheat and shut down. Clean the fan as follows:
1. Disconnect the MG362x1A from the power source.
2. Carefully vacuum the fan filters from the outside to clean them.
Table 1-1. Related Manuals
Document Part Number Description
10100-00070 Rubidium™ MG362x1A Product Information, Compliance, and Safety
10370-10383 Rubidium™ MG362x1A Operation Manual
10370-10385 Rubidium™ MG362x1A Programming Manual
11410-00928 Rubidium™ MG362x1A Technical Data Sheet

General Information 1-9 ESD Requirements
MG362x1A MM PN: 10370-10386 Rev. B 1-3
Troubleshooting
The MG362x1A firmware includes internal diagnostics that self-test most of the internal assemblies. When the
MG362x1A fails self-test, one or more error messages appear on screen to aid in isolating the failure to a
replaceable subassembly or RF component. Chapter 5, “Troubleshooting” lists and describes the self-test error
messages and provides procedures for isolating MG362x1A failures to a replaceable subassembly or RF
component.
Repair
Most instrument failures are field repairable by replacing the failed subassembly or RF component.
Detailed instructions for removing and replacing failed subassemblies and components are provided in
Chapter 6, “Assemblies Removal and Replacement”.
Calibration
The MG362x1A may require calibration after repair. Refer to Chapter 4, “Performance Verification” for a
listing of requirements and procedures.
1-9 ESD Requirements
The MG362x1A contains components that can be easily damaged by electrostatic discharge (ESD). An ESD
safe work area and proper ESD handling procedures that conform to ANSI/ESD S20.20-1999 or
ANSI/ESD S20.20-2007 is mandatory to avoid ESD damage when handling subassemblies or components
found in the MG362x1A instrument.

1-9 ESD Requirements General Information
1-4 PN: 10370-10386 Rev. B MG362x1A MM

MG362x1A MM PN: 10370-10386 Rev. B 2-1
Chapter 2 — Functional Description
2-1 Introduction
This chapter provides brief functional descriptions of the major subsystems that are contained in each model
of the MG362x1A. In addition, the operation of the frequency synthesis, automatic level control (ALC), and
RF deck subsystems is described so that the instrument operator may better understand the overall operation
of the MG362x1A. Block diagrams are included to supplement the written descriptions.
2-2 Major Subsystems
The MG362x1A circuitry consists of various distinct subsystems that are contained on one or more printed
circuit board assemblies or in microwave components located on the RF deck. The following paragraphs
identify the subsystems that make up the instrument and provide a brief description of each.
Figure 2-1 on page 2-3 is an overall block diagram of a typical MG362x1A synthesizer.
Digital Control
This circuit subsystem consists of the B2 Microprocessor Module. The central processor unit (CPU) located on
this Module is the main controller for the MG362x1A. This controller directly or indirectly controls all
functions of the instrument. The CPU contains memory that stores the main operating system components and
instrument firmware, instrument calibration data, and front panel setup data during the power-off condition.
It has a GPIB interface that allows it to communicate with external devices over the GPIB, an Ethernet
interface (VXI-11 over TCP/IP) for LAN connectivity, and a serial interface to a serial terminal port. These
interfaces are all located on the rear panel. The CPU is directly linked via a dedicated data and address bus to
the front panel assembly, the B4 Auxiliary/Analog Instruction Module, the B6 ALC Module, the B11
Synthesizer Module, B14 Referenced Synthesizer Module, and B6 YIG Module.
The B2 Module contains circuits that perform parallel-to-serial and serial-to-parallel data conversion. The B2
also contains circuitry for many of the rear panel signals and a 14-bit resolution digital volt meter (DVM).
Front Panel Assembly
This circuit subsystem consists of the front panel, the front panel rotary data knob, the front panel control
PCB, and the graphical user interface (GUI). The subsystem interfaces the front panel via the dedicated data
and address bus. The front panel rotary data knob is also linked to the CPU via the data and address bus.
The front panel PCB has circuits to control the GUI, turn the front panel LEDs on and off, and convert
keyboard switch matrix signals to parallel key code. It also contains the standby/operate line switch and the
optical encoder for the rotary data knob.
Frequency Synthesis
The frequency synthesis subsystem consists of the B14 reference synthesizer and the B6 YIG assembly. It
provides the reference frequencies and phase lock circuits for precise control of the YIG-tuned oscillator
frequencies. Options 03, 13, 26, and 56 provide optimized phase noise performance and stability.
YIG Assembly
The B6 YIG assembly contains the YIG-tuned oscillator and associated circuit assemblies. This assembly
contains the driver circuitry that provides the tuning current and bias voltages for the YIG-tuned oscillator.
The CPU controls the B6 YIG assembly via the serial bus.

2-2 Major Subsystems Functional Description
2-2 PN: 10370-10386 Rev. B MG362x1A MM
ALC
This ALC circuit subsystem consists of the B5 ALC Module, output coupler, and switched filter. It provides the
following:
•Level control of the RF output power
•Current drive signals to the PIN switches located in the switched filter assembly (SWF) and the A12
Frequency Extension Module (FEM).
•Drive signals for the step attenuator.
The CPU controls the B5 ALC Module.
RF Deck
This subsystem contains those elements related to the generation, modulation, and control of the sweep-
and CW-frequency RF signals. These elements include the B6 YIG-tuned oscillator/circuit assembly, the
9 kHz to 2.2 GHz down converter assembly (B10), the B12 switched filter assembly, the A12 switched doubler
module, the directional coupler/level detector, and the optional step attenuator. Refer to Section 2-6 for a
functional overview of the RF deck subsystem.
Power Supply
The power supply subsystem consists of the power input connector/filter module, the regulator PCB, the power
supply PCB, the standby power supply PCB, and the power module fan unit. It supplies all the regulated DC
voltages used by the MG362x1A circuits. The voltages are routed throughout the instrument via the
motherboard PCB.
Inputs/Outputs
The rear panel and the B2 microprocessor Module contain the interface circuits for the majority of the rear
panel input and output connectors, including the AUX I/O connector.
The A5 Auxiliary Module (or the optional B4 Analog Instruction Module) provides a 0V to +10V ramp signal to
the rear panel HORIZ OUT connector, a V/GHz signal to the rear panel AUX I/O connector, and a SLOPE
signal to the B5 ALC Module for slope-vs-frequency correction of the RF output power.
The rear panel EXT ALC IN, AM IN, and AM OUT are routed through the rear panel PCB and then through
the motherboard PCB to the B5 ALC Module. The rear panel connectors, 10 MHz REF OUT and 10 MHz REF
IN, are routed through the rear panel PCB and coupled to the Reference Module.
The rear panel FM/FM IN and FM/FM OUT connectors are routed through the rear panel PCB, and then
through the Motherboard PCB to the B6 YIG-lock Module. The rear panel PULSE TRIG IN connector is routed
through the rear panel PCB, and then to the B5 ALC Module. The rear panel PULSE SYNC OUT and PULSE
VIDEO OUT connectors are routed through the rear panel PCB and then to the optional Pulse Generator via
coaxial cables. The rear panel EFC IN connector is routed to the Reference PCB via coaxial cables.
The rear panel IEEE-488 GPIB and SERIAL I/O connectors are routed through the rear panel PCB and then
through the motherboard to the B2 microprocessor Module. The rear panel (Ethernet over TCP/IP) connector is
routed through the mother board to the Ethernet/GPIB Controller assembly, and then to the B2
microprocessor module.
Motherboard/Interconnections
The motherboard PCB and associated cables provide the interconnections for the flow of data, signals,
and DC voltages between all internal components and assemblies throughout the MG362x1A.

Functional Description 2-2 Major Subsystems
MG362x1A MM PN: 10370-10386 Rev. B 2-3
Figure 2-1. Block Diagram of a Typical MG36221A Synthesized Signal Generator
B12
Regulator PCB
3-84216-3
Coupler
B2
B1
B14
B6
B8
B5
B10

2-2 Major Subsystems Functional Description
2-4 PN: 10370-10386 Rev. B MG362x1A MM
Figure 2-2. Block Diagram of a Typical MG36241A Synthesized Signal Generator
Regulator PCB
Coupler
B7
B5
B12
B13
B6
B11
B9
B2
B1
B10