Document Outline

• Title Page
• Table of Contents
• Chapter 1 General Information
  • 1-1 SCOPE OF MANUAL 1-3
  • 1-2 INTRODUCTION 1-3
  • 1-3 DESCRIPTION 1-3
  • 1-4 IDENTIFICATION NUMBER 1-5
  • 1-5 ELECTRONIC MANUAL 1-5
  • 1-6 RELATED MANUALS 1-5
    • GPIB Programming Manual 1-5
    • SCPI Programming Manual 1-5
    • Maintenance Manual 1-6
  • 1-7 OPTIONS 1-6
  • 1-8 PERFORMANCE SPECIFICATIONS 1-7
  • 1-9 RECOMMENDED TEST EQUIPMENT 1-8
• Chapter 2 Installation
  • 2-1 INTRODUCTION 2-3
  • 2-2 INITIAL INSPECTION 2-3
  • 2-3 PREPARATION FOR USE 2-4
    • Power Requirements 2-4
    • Line Voltage Selection 2-4
    • Power Connection 2-4
    • Standby Operation 2-5
    • Warmup Time 2-6
    • Operating Environment 2-6
  • 2-4 GPIB SETUP AND INTERCONNECTION 2-7
    • Interface Connector 2-7
    • Cable Length Restrictions 2-7
    • GPIB Interconnection 2-7
    • Setting the GPIB Address 2-7
    • Selecting the Line Terminator 2-9
    • Selecting the Interface Language 2-9
  • 2-5 RACK MOUNTING KIT INSTALLATION 2-10
    • Preliminary 2-10
    • Procedure 2-10
  • 2-6 PREPARATION FOR STORAGE/SHIPMENT 2-13
    • Preparation for Storage 2-13
    • Preparation for Shipment 2-13
• Chapter 3 Local (Front Panel) Operation
  • 3-1 INTRODUCTION 3-5
  • 3-2 FRONT PANEL LAYOUT 3-6
    • Line Key 3-6
    • Data Display Area 3-6
    • Data Entry Area 3-7
    • RF Output Control Key 3-7
    • Connectors 3-7
  • 3-3 DATA DISPLAY AREA 3-8
    • Menu Display Format 3-9
    • Menu Keys 3-10
  • 3-4 DATA ENTRY AREA 3-12
  • 3-5 INSTRUMENT START-UP 3-14
    • Powering Up the 681XXC 3-14
    • Start-Up Display 3-14
    • Standby Operation 3-14
    • Self-Testing the 681XXC 3-15
    • Resetting to Default Parameters 3-15
  • 3-10 POWER LEVEL SWEEP OPERATION 3-53
    • Selecting CW Power Sweep Mode 3-53
    • Setting CW Power Sweep Step Size and Dwell Time 3-54
    • Selecting a CW Power Sweep Trigger 3-55
    • Selecting a Power Level Sweep Range 3-56
    • Selecting a Sweep Frequency/Step Power Mode 3-58
    • Setting Power Level Step Size 3-59
  • 3-11 LEVELING OPERATIONS 3-60
    • Selecting a Leveling Mode 3-60
    • Attenuator Decoupling 3-64
    • ALC Power Slope 3-65
    • User Cal (User Level Flatness Correction) 3-67
  • 3-12 SIGNAL MODULATION 3-73
    • Amplitude Modulation Operating Modes 3-73
    • Providing Amplitude Modulation 3-73
    • Frequency Modulation Operating Modes 3-74
    • Providing Frequency Modulation 3-75
    • Square Wave Modulation Operating Modes 3-77
    • Providing Square Wave Modulation 3-77
  • 3-13 SYSTEM CONFIGURATION 3-80
    • Configuring the Front Panel 3-81
    • Configuring the Rear Panel 3-82
    • Configuring the RF 3-83
    • Configuring the GPIB 3-85
    • Setting Increment Sizes 3-88
  • 3-14 SAVING/RECALLING INSTRUMENT SETUPS 3-89
    • Saving Setups 3-89
    • Recalling Setups 3-89
    • Erasing Stored Setups 3-90
  • 3-15 SECURE OPERATION 3-91
  • 3-16 REFERENCE OSCILLATOR CALIBRATION 3-92
• Chapter 4 Local Operation--Menu Maps
  • 4-1 INTRODUCTION 4-3
  • 4-2 MENU MAP DESCRIPTION 4-3
• Chapter 5 Operation Verification
  • 5-1 INTRODUCTION 5-3
  • 5-2 TEST EQUIPMENT 5-3
  • 5-3 TEST RECORDS 5-3
  • 5-4 INITIAL 681XXC CHECKOUT 5-4
    • Power Up 5-4
    • Self Test 5-4
    • Resetting the 681XXC 5-4
    • Warmup Time 5-4
  • 5-5 CW FREQUENCY ACCURACY TEST 5-5
    • Test Setup 5-5
    • Test Procedure 5-6
  • 5-6 POWER LEVEL ACCURACY AND FLATNESS TESTS 5-13
    • Test Setup 5-13
    • Power Level Accuracy Test Procedure 5-14
    • Power Level Flatness Test Procedure 5-15
• Chapter 6 Operator Maintenance
  • 6-1 INTRODUCTION 6-3
  • 6-2 ERROR AND WARNING/STATUS MESSAGES 6-3
    • Self-Test Error Messages 6-3
    • Normal Operation Error and Warning/ Status Messages 6-8
  • 6-3 TROUBLESHOOTING 6-10
  • 6-4 ROUTINE MAINTENANCE 6-13
    • Cleaning the Fan Filter 6-13
    • Cleaning the Data Display 6-13
    • Replacing the Line Fuse 6-14
• Chapter 7 Use With Other Instruments
  • 7-1 INTRODUCTION 7-3
  • 7-2 MASTER-SLAVE OPERATION 7-4
    • Connecting the Instruments 7-4
    • Initiating Master-Slave Operation 7-5
    • Master-Slave Operation 7-7
    • Master-Slave Operation in VNA Mode 7-7
    • Terminating Master-Slave Operation 7-9
  • 7-3 USE WITH A 56100A SCALAR NETWORK ANALYZER 7-10
    • Connecting the 681XXC to the 56100A 7-10
  • 7-4 USE WITH A 360B VECTOR NETWORK ANALYZER 7-11
    • Connecting the 681XXC to the 360B 7-11
    • Modes of Operation 7-12
    • Source Lock Mode 7-12
    • Tracking Mode 7-14
  • 7-5 USE WITH A HP8757D SCALAR NETWORK ANALYZER 7-16
    • Connecting the 681XXC to the HP8757D 7-16
    • Setting Up the 681XXC 7-17
    • Initiating HP8757D SNA Operation 7-19
• Appendix A Rear Panel Connectors
  • A-1 INTRODUCTION A-1
  • A-2 REAR PANEL CONNECTORS A-1
  • A-3 CONNECTOR PINOUT DIAGRAMS A-1
• Appendix B Performance Specifications
• Subject Index
  • Number
    • 681XXC
      • Front Panel Layout, 3-6
      • General Description, 1-3
      • Manual, Electronic, 1-5
      • Manuals, Related, 1-5
      • Models, List of, 1-4
      • Options, List of, 1-6
      • Performance Specifications, B-1
      • Rear Panel Layout, A-2
  • A
    • ALC, 3-60
    • AM Mode
      • Menu Map, 4-15
      • Operating Modes, 3-73
      • Providing AM, 3-73
    • Analog Sweep Frequency Mode
      • Menu Map, 4-7
  • C
    • Calibration, Reference Oscillator, 3-92
    • Connectors
      • Front Panel, 3-7
      • Rear Panel, A-1
    • CW Frequency Accuracy Test
      • Test Procedure, 5-6
      • Test Records, 5-7 - 5-12
      • Test Setup, 5-5
    • CW Frequency Mode
      • Menu Map, 4-6
    • CW Power Sweep Mode
      • Menu Map, 4-12
      • Selecting a Sweep Range, 3-56
      • Selecting a Sweep Trigger, 3-55
      • Selecting CW Power Sweep Mode, 3-53
      • Selecting Linear or Logarithmic Sweep, 3-57
      • Setting Dwell Time, 3-54
      • Setting Step Size, 3-54
  • D
    • Data Display
      • Description, 3-8
      • Menu Display Format, 3-9
      • Menu Keys, 3-10
    • Data Entry Area
      • Description, 3-12
    • Default Parameters, 3-16
  • E
    • Entering Data
      • Setting Increment Sizes, 3-88
    • Error Messages
      • Operation Related, 6-8
      • Self Test, 6-3 - 6-7
  • F
    • Fixed Power Level Mode
      • Menu Map, 4-11
    • FM Mode
      • Menu Map, 4-16
      • Operating Modes, 3-74
      • Providing FM, 3-75
    • Frequency Scaling, 3-81
    • Front Panel
      • Connectors, 3-7
      • Data Display Area, 3-6, 3-8
      • Data Entry Area, 3-7, 3-12
      • Description, 3-6
      • Layout, 3-6
  • G
    • General Description, 1-3
    • General Purpose Interface Bus (GPIB)
      • Address, 2-7
      • Cable Length Restrictions, 2-7
      • Interface Connector, 2-7
      • Line Terminator, 2-9
      • Native Interface Language, 2-9
      • SCPI Interface Language, 2-9
      • Setup and Interconnection, 2-7
  • I
    • Identification Number, 1-5
    • Initial Inspection, 2-3
  • L
    • Leveling Operations
      • ALC Power Slope, 3-65
      • Attenuator Decoupling, 3-64
      • External Leveling, 3-61
      • Fixed Gain, 3-63
      • Internal Leveling, 3-61
      • Menu Map, 4-14
      • Selecting a Leveling Mode, 3-60
      • User Cal (User Level Flatness Correction), 3-67
    • List Sweep Frequency Mode
      • Menu Map, 4-10
  • M
    • Maintenance, Routine
      • Display Cleaning, 6-13
      • Fan Filter Cleaning, 6-13
      • Line Fuse Replacement, 6-14
    • Manual Sweep Frequency Mode
      • Menu Map, 4-9
    • Manual, Electronic, 1-5
    • Manual, GPIB Programming, 1-5
    • Manual, Maintenance, 1-6
    • Manual, SCPI Programming, 1-5
    • Master-Slave Operation, 7-4
    • Menu Maps
      • AM Mode, 4-15
      • Analog Sweep Frequency Mode, 4-7
      • CW Frequency Mode, 4-6
      • CW Power Sweep Mode, 4-12
      • Description, 4-3
      • Fixed Power Level Mode, 4-11
      • FM Mode, 4-16
      • Leveling Modes, 4-14
      • List Sweep Frequency Mode, 4-10
      • Manual Sweep Frequency Mode, 4-9
      • Sample Menu Map, 4-5
      • Square Wave Modulation Mode, 4-17
      • Step Sweep Frequency Mode, 4-8
      • Sweep Frequency/Step Power Mode, 4-13
      • System Configuration, 4-18
    • Messages
      • Error, 6-3 - 6-8
      • Status, 6-9
      • Warning, 6-9
    • Models, List of, 1-4
    • Modulation Modes
      • AM Mode, 3-73
      • FM Mode, 3-73
      • Square Wave Modulation Mode, 3-73
  • O
    • Operating Environment, 2-6
    • Operational Verification Tests, 5-3
    • Operator Maintenance
      • Error and Warning/Status Messages, 6-3
      • Routine Maintenance, 6-13
      • Troubleshooting, 6-10
    • Options, List of, 1-6
  • P
    • Performance Specifications, 1-7, B-1
    • Power Level Accuracy and Flatness Tests
      • Accuracy Test Procedure, 5-14
      • Flatness Test Procedure, 5-15
      • Test Records, 5-19 - 5-45
      • Test Setup, 5-13
    • Power Level Control
      • Selecting a Preset Sweep Range, 3-57
      • Setting a Preset Sweep Range, 3-57
    • Power Level Modes
      • CW Power Sweep Mode, 3-53
      • Sweep Frequency/Step Power Mode, 3-53
    • Power Requirements, 2-4
    • Preparation for Storage/Shipment, 2-13
    • Preparation for Use, 2-4
      • Line Voltage Selection, 2-4
      • Operating Environment, 2-6
      • Power Requirements, 2-4
      • Standby Operation, 2-5
      • Warmup Time, 2-6
  • R
    • Rear Panel Connectors, A-1
    • Recommended Test Equipment, 1-8
    • Reference Oscillator Calibration, 3-92
  • S
    • Saving/Recalling Instrument Setups, 3-89
    • Scope of Manual, 1-3
    • Secure Operation, 3-91
    • Self Test
      • Error Messages, 6-3 - 6-7
      • From System Menu, 3-15
    • Specifications, Performance, B-1
    • Square Wave Modulation Mode
      • Menu Map, 4-17
      • Operating Modes, 3-77
      • Providing Square Wave Modulation, 3-77
    • SS Mode Operation, 7-12
    • Start Up, 3-14
    • Start-Up Display, 3-14
    • Step Sweep Frequency Mode
      • Menu Map, 4-8
    • Sweep Frequency/Step Power Mode
      • Menu Map, 4-13
      • Selecting a Sweep Frequency/Step Power Mode, 3-58
      • Selecting a Sweep Range, 3-56
      • Selecting Linear or Logarithmic Sweep, 3-57
      • Setting Step Size, 3-59
    • System Configuration
      • Configuring the Front Panel, 3-81
      • Configuring the GPIB, 3-85
      • Configuring the Rear Panel, 3-82
      • Configuring the RF, 3-83
      • Frequency Scaling, 3-81
      • Menu Map, 4-18
      • Setting Increment Sizes, 3-88
  • T
    • Test Equipment, 1-8, 5-3
    • Testing, Operational Verification
      • CW Frequency Accuracy, 5-5
      • Initial 681XXC Checkout, 5-4
      • Power Level Accuracy and Flatness, 5-13
      • Test Equipment, 5-3
      • Test Records, 5-3, 5-7 - 5-12, 5-19 - 5-45
    • Troubleshooting Tables, 6-10 - 6-12
  • U
    • Use With Other Instruments
      • Master-Slave Operation, 7-4
      • Use with a 360B Vector Network Analyzer, 7-11
      • Use with a 56100A Scalar Network Analyzer, 7-10
      • Use With a HP8757D Scalar Network Analyzer, 7-16