Giga-tronics 8650B Series User manual

Series 8650B Universal Power Meters
Publication 31470-001, Rev C, November 2, 2017
Series 8650B
Universal Power Meters
Operation Manual
Giga
-tronics Incorporated 4650 Norris Canyon Road, San Ramon, CA 94583
925.328.4650/800.726.4442/925.328.4700 (Fax
) Customer Service: 800.444.2878/925.328.4702 (Fax)

Series 8650B Universal Power Meters
ii Publication 31470-001, Rev C, November 2, 2017
All technical data and specifications in this publication are subject to change without prior notice and do not represent a
change without prior notice and do not represent a commitment on the part of Giga-tronics Incorporated.
Publication Method, Medium, Copyrights:
It is the intent of Giga-tronics to publish this manual in “electronicially” as a PDF file, and delivered via CD, DVD,
or other medium, including protected download, as Giga-tronics sees fit. This PDF file may be searched and
printed by the end customer, but Giga-tronics does not release any resale rights to this document.
© 2011 Giga-tronics Incorporated. All rights reserved. Printed in the USA.
WARRANTY
Giga-tronics Series 8650B
instruments are warranted against
defective materials and workmanship for one year from date of
shipment. Giga-
tronics will at its option repair or replace
products that are proven defective during the warranty period.
This warranty DOES NOT cover damage resulting from improper
use, nor workmanship other than Giga-tronics service. There is
no implied warranty
of fitness for a particular purpose, nor is
Giga-tronics liable for any consequential damages. Specification
and price change privileges are reserved by Giga-tronics.
MODEL NUMBERS
The series 8650B includes two models: The single-channel Model 8651B and the dual-channel Model 8652B.
Apart from the number of sensors they support, the two models are identical. Both models are referred to in
this manual by the general term 8650B, except where it is necessary to make a distinction between the models.

Series 8650B Universal Power Meters
Publication 31470-001, Rev C, November 2, 2017 iii

Series 8650B Universal Power Meters
iv Publication 31470-001, Rev C, November 2, 2017
About this Publication
This operation manual covers the operation and performance verification of the Giga-tronics Series 8650B
Universal Power Meters.
Preface:
In addition to a comprehensive Contents and general information about the manual, the Preface also contains a
record of changes made to the manual since its publication, and a description of Special Configurations. If you
have ordered a user-specific product, please refer to page vii for a description of the special configuration.
Chapters:
1 – Introduction
Contains a brief introduction to the instrument and its performance parameters.
2 – Front Panel Operation
A guide to the instrument’s front panel keys, display and configuration menus.
3 – Remote Operation
A guide to the instrument’s remote control interface.
4 – Performance Verification
Defines the procedures to verify the performance of the 8650B Meter.
Appendices:
A – Typical Applications Programs
Provides examples of programs for controlling the 8650B remotely.
B – Power Sensors
Provides selection data, specifications and calibration procedures for power sensors.
C – Options
Describes options available for the Series 8650B.
D – Menu Structure
Pictorial mapping of the various menus used in the Series 8650B. Use this appendix as a map to locate
functions to perform.
Changes that occur after production of this publication, and Special Configuration data will be inserted as loose
pages in the publication binder. Please insert and/or replace the indicated pages as detailed in the Technical
Publication Change Instructions included with new and replacement pages.

Series 8650B Universal Power Meters
Publication 31470-001, Rev C, November 2, 2017 v
Conventions
The following conventions are used in this product publication. Additional conventions not included here will be
defined at the time of usage.
Warning
WARNING
The WARNING statement is encased in gray and centered in the page. This calls
attention to a situation, or an operating or maintenance procedure, or practice,
which if not strictly corrected or observed, could result in injury or death of
personnel. An example is the proximity of high voltage.
Caution
CAUTION
The CAUTION statement is enclosed with single lines and centered in the page.
This calls attention to a situation, or an operating or maintenance procedure, or
practice, which if not strictly corrected or observed, could result in temporary or
permanent damage to the equipment, or loss of effectiveness.
Notes
NOTE: A NOTE Highlights or amplifies an essential operating or maintenance procedure, practice,
condition or statement.

Series 8650B Universal Power Meters
vi Publication 31470-001, Rev C, November 2, 2017
Record of Publication Changes
This table is provided for your convenience to maintain a permanent record of publication change data.
Corrected replacement pages will be issued as TPCI (Technical Publication Change Instructions), and will be
inserted at the front of the binder. Remove the corresponding old pages, insert the new pages and record the
changes here.
TPCI
Number TPCI Issue Date Date Entered Comments

Series 8650B Universal Power Meters
Publication 31470-001, Rev C, November 2, 2017 vii
Special Configurations
When the accompanying product has been configured for user-specific application(s), supplemental pages will
be inserted at the front of the publication binder. Remove the indicated page(s) and replace it (them) with the
furnished Special Configuration supplemental page(s).

Series 8650B Universal Power Meters
viii Publication 31470-001, Rev C, November 2, 2017
Table of Contents
CHAPTER 1INTRODUCTION................................................................................................................................1-1
1.1 General Information ..................................................................................................................................... 1-1
1.1.1 Features................................................................................................................................................. 1-1
1.1.2 Environmental Standards ...................................................................................................................... 1-2
1.1.3 Power Requirements............................................................................................................................. 1-2
1.1.4 Items Furnished..................................................................................................................................... 1-2
1.1.5 Items Required ...................................................................................................................................... 1-2
1.1.6 Cooling................................................................................................................................................... 1-2
1.1.7 Cleaning ................................................................................................................................................. 1-2
1.1.8 Receiving Inspection.............................................................................................................................. 1-3
1.1.9 Reshipment Preparation ....................................................................................................................... 1-3
1.2 Installation .................................................................................................................................................... 1-4
1.2.1 Safety Precautions................................................................................................................................. 1-4
1.2.2 Power..................................................................................................................................................... 1-5
1.2.3 Power Sensor Precautions..................................................................................................................... 1-5
1.2.4 Interface (Rear Panel)............................................................................................................................ 1-6
1.2.4.1 Line Voltage Selection & Fuse ........................................................................................................ 1-6
1.2.4.2 Inputs/Outputs ............................................................................................................................... 1-6
1.2.4.3 Remote Interface............................................................................................................................ 1-6
1.3 Specifications................................................................................................................................................ 1-7
1.3.1 Power Meter.......................................................................................................................................... 1-7
1.3.2 Accuracy ................................................................................................................................................ 1-8
1.3.3 Measurement Rates ............................................................................................................................ 1-11
1.3.4 Remote Operation............................................................................................................................... 1-12
1.3.5 GPIB Fast Buffered Mode Controls...................................................................................................... 1-12
1.3.6 Inputs/Outputs .................................................................................................................................... 1-12
1.3.7 General Specifications ......................................................................................................................... 1-13
1.3.8 Options ................................................................................................................................................ 1-13
1.3.9 Power Sensors ..................................................................................................................................... 1-13
CHAPTER 2FRONT PANEL OPERATION .................................................................................................................2-1
2.1 Introduction.................................................................................................................................................. 2-1
2.2 Front Panel Description ................................................................................................................................ 2-1
2.2.1 Front Panel Layout Descriptions ........................................................................................................... 2-2
2.3 Front Panel Applications............................................................................................................................... 2-4
2.3.1 Meter Setup........................................................................................................................................... 2-5
2.3.1.1 Calibrator........................................................................................................................................ 2-5
2.3.1.2 Config.............................................................................................................................................. 2-6
2.3.1.3 Sto/Rcl .......................................................................................................................................... 2-15
2.3.1.4 Service .......................................................................................................................................... 2-15
2.3.2 Display Setup ....................................................................................................................................... 2-16
2.3.2.1 Line Configuration ........................................................................................................................ 2-17
2.3.2.2 More Options ............................................................................................................................... 2-19
2.3.3 Relative Mode (Rel)............................................................................................................................. 2-19
2.3.4 Sensor Setup........................................................................................................................................ 2-20
2.3.4.1 Averaging...................................................................................................................................... 2-20
2.3.4.2 Offset............................................................................................................................................ 2-21

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2.3.4.3 Config............................................................................................................................................ 2-21
2.4 Measurement Guide................................................................................................................................... 2-23
2.4.1 Using the Power Sweep Calibrator...................................................................................................... 2-23
2.4.2 807XXA Sensor Operation ................................................................................................................... 2-23
2.4.3 Sensor Calibration & Zeroing............................................................................................................... 2-24
2.4.3.1 Calibration & Zeroing.................................................................................................................... 2-24
2.4.3.2 Zeroing Only ................................................................................................................................. 2-25
2.4.3.3 Calibration & Zeroing (High Power Sensors with Removable Attenuators)................................. 2-25
2.4.3.4 Low Level Performance Check...................................................................................................... 2-26
2.4.4 Measuring Source Output Power........................................................................................................ 2-27
2.4.5 Using the Peaking Meter ..................................................................................................................... 2-27
2.4.6 High Power Level Measurements........................................................................................................ 2-28
2.4.7 Modulated Measurement Modes ....................................................................................................... 2-28
2.4.7.1 MAP Mode.................................................................................................................................... 2-28
2.4.7.2 PAP Mode ..................................................................................................................................... 2-29
2.4.7.3 BAP Mode..................................................................................................................................... 2-29
2.4.8 Measurement Collection Modes......................................................................................................... 2-31
2.4.8.1 CW Mode...................................................................................................................................... 2-31
2.4.8.2 PEAK Mode (80350A Peak Power Sensor).................................................................................... 2-31
2.4.9 Mode Restrictions ............................................................................................................................... 2-33
2.4.10 When to use CW, MAP & BAP........................................................................................................... 2-33
2.4.11 Multi-Tone Tests................................................................................................................................ 2-33
2.4.12 Peak Hold........................................................................................................................................... 2-35
2.4.13 Crest Factor ....................................................................................................................................... 2-36
2.4.14 Burst Signal Measurements............................................................................................................... 2-38
2.4.15 Burst Start Exclude, Burst End Exclude ............................................................................................. 2-39
2.4.16 Burst Dropout.................................................................................................................................... 2-40
2.4.17 Optimizing Measurement Speed....................................................................................................... 2-41
2.4.18 Peak Power Measurements .............................................................................................................. 2-42
2.4.19 Measuring an Attenuator (Single Channel Method) ......................................................................... 2-42
2.4.20 Improving Accuracy........................................................................................................................... 2-43
2.4.21 Performance Verification .................................................................................................................. 2-44
2.4.22 Sources of Error................................................................................................................................. 2-45
CHAPTER 3REMOTE OPERATION ........................................................................................................................3-1
3.1 Introduction.................................................................................................................................................. 3-1
3.1.1 Sending Commands to the 8650B over GPIB ........................................................................................ 3-1
3.1.1.1 Clear Device over GPIB ................................................................................................................... 3-2
3.1.1.2 Clear Interface over GPIB ............................................................................................................... 3-2
3.1.1.3 Local & Remote Control over GPIB................................................................................................. 3-2
3.1.1.4 Sensor Selection & Calibration ....................................................................................................... 3-2
3.1.2 Polling over GPIB ................................................................................................................................... 3-3
3.1.2.1 Parallel Polling over GPIB ............................................................................................................... 3-3
3.1.2.2 Serial Polling over GPIB .................................................................................................................. 3-3
3.1.3 Data Output Formats............................................................................................................................. 3-4
3.1.4 Power-On Default Conditions................................................................................................................ 3-4
3.1.5 Remote Connection Configuration........................................................................................................ 3-5
3.1.5.1 GPIB ................................................................................................................................................ 3-5
3.1.5.2 LAN ................................................................................................................................................. 3-5

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3.1.5.3 USB ................................................................................................................................................. 3-5
3.2 SCPI Command Interface .............................................................................................................................. 3-6
3.2.1 Sensor Calibration & Zeroing................................................................................................................. 3-6
3.2.2 Sensor & Channel Configuration ........................................................................................................... 3-6
3.2.3 Measurement Triggering....................................................................................................................... 3-7
3.2.4 Memory Functions ................................................................................................................................ 3-7
3.2.5 IEEE 488.2 Required Commands ........................................................................................................... 3-7
3.2.6 Calculate Subsystem Commands........................................................................................................... 3-8
3.2.7 Sense Subsystem Commands .............................................................................................................. 3-10
3.2.8 Trigger Subsystem Commands ............................................................................................................ 3-12
3.2.9 SCPI Command Syntax......................................................................................................................... 3-14
3.2.9.1 Commands in Brackets ................................................................................................................. 3-14
3.2.9.2 Programmer Selective Parameters............................................................................................... 3-14
3.2.9.3 Italics in Syntax Descriptions ........................................................................................................ 3-14
3.2.9.4 Query Format ............................................................................................................................... 3-14
3.2.9.5 Linking Command Strings ............................................................................................................. 3-14
3.2.9.6 Measurement Data Output Format ............................................................................................. 3-14
3.2.10 Sensor Calibration & Zeroing............................................................................................................. 3-19
3.2.10.1 Sensor Calibration ...................................................................................................................... 3-19
3.2.10.2 Sensor Zero................................................................................................................................. 3-20
3.2.11 Sensor Configuration Commands...................................................................................................... 3-21
3.2.12 Sensor Gate Commands .................................................................................................................... 3-23
3.2.13 Reading Power Measurements ......................................................................................................... 3-25
3.2.13.1 Special Errors.............................................................................................................................. 3-26
3.2.14 Instrument Triggering........................................................................................................................ 3-27
3.2.15 Arming the Triggering Cycle .............................................................................................................. 3-30
3.2.16 Channel Configuration....................................................................................................................... 3-31
3.2.17 Cal Factor Correction......................................................................................................................... 3-34
3.2.17.1 Cal Factor Error Control.............................................................................................................. 3-35
3.2.18 High Speed Measurements ............................................................................................................... 3-36
3.2.18.1 Operating Mode Control ............................................................................................................ 3-36
3.2.18.2 Triggering Notes ......................................................................................................................... 3-38
3.2.18.3 Measurement Level Notes ......................................................................................................... 3-38
3.2.19 Peak Power Sensor Triggering........................................................................................................... 3-39
3.2.20 Averaging........................................................................................................................................... 3-41
3.2.21 Relative or Referenced Measurements............................................................................................. 3-42
3.2.21.1 Error Control............................................................................................................................... 3-42
3.2.22 Offsets ............................................................................................................................................... 3-43
3.2.23 Communication Configurations......................................................................................................... 3-44
3.2.24 Status Monitoring & Service Request Generation ............................................................................ 3-45
3.2.24.1 Status Byte Register.................................................................................................................... 3-46
3.2.24.2 Event Status Register.................................................................................................................. 3-48
3.2.24.3 Operation Status Register .......................................................................................................... 3-50
3.2.24.4 Operation Complete................................................................................................................... 3-52
3.2.24.5 Clear Status................................................................................................................................. 3-52
3.2.25 Min/Max Configuration & Monitoring .............................................................................................. 3-53
3.2.26 Limit Line Configuration & Monitoring ............................................................................................. 3-54
3.2.27 Analog Output ................................................................................................................................... 3-56
3.2.28 Saving & Recalling Configurations..................................................................................................... 3-58