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General| Input Impedance | 50 Ω |
|---|---|
| Tracking Generator | Yes |
| Modulation Types | AM, FM |
| Output Impedance | 50 Ω |
| Display Type | Color LCD |
| Interface | RS-232, GPIB |
Explains hazard symbols used in the manual and on the instrument.
Details crucial safety precautions for operation and maintenance.
Defines the manual's purpose and target audience for maintenance.
Outlines the structure and content of the maintenance manual.
Provides a brief overview of the spectrum analyzer's purpose and capabilities.
Details the microprocessor-controlled operation and input frequency range.
Lists the various mechanical assemblies and components of the instrument.
Introduces the three levels of theory of operation: system, functional, and module.
Explains the overall function of the spectrum analyzer as a superheterodyne receiver.
Describes signal path and module interactions during spectrum analysis.
Details the components and operation of the RF receiver and synthesizer.
Explains RBW filtering and step-gain amplification functions.
Describes signal detection, conversion to DC voltage, and processing.
Outlines the functions of the CPU, DSP, and other controllers for system operation.
Details the power supply's input, EMI filter, rectifier, and control circuits.
Explains the RF signal source operation and its blocks.
Describes the automatic computer-based adjustment process and when it's needed.
Lists necessary test equipment and software for calibration procedures.
Outlines steps like disassembly, environment setup, and warm-up before calibration.
Details the sequence for initializing and performing calibrations.
Steps for deleting old data and setting up the instrument for calibration.
Calibrates amplitude response of the log amplifier.
Calibrates step gain amplifier and attenuator on the IF board.
Calibrates the amplitude response of the RF input step attenuator.
Compensates for resistor tolerance in the span adjusting attenuator.
Corrects level errors across the frequency range for attenuator settings.
Calibrates the amplitude response of the tracking generator.
Covers uploading/downloading calibration data and serial numbers.
Instructions for diagnosing faults at the module level.
Flowcharts for diagnosing common instrument failures and malfunctions.
Step-by-step troubleshooting for power-on and basic operation issues.
Troubleshooting steps for specific operational failures like no display or no sound.
Troubleshooting specific issues related to optional features like the tracking generator.
General instructions and precautions for assembly replacement.
Lists necessary tools for disassembly and reassembly procedures.
Steps for removing and replacing the rear panel of the instrument.
Procedure for removing the top cover assembly.
Steps to remove and replace the front panel components.
Procedure for removing and replacing the front frame assembly.
Instructions for removing and replacing the RF module.
Procedure for replacing the IF filter and amplifier board.
Steps to remove and replace the video detector board.
Procedure for removing and replacing the main processor board.
Steps for replacing the LCD inverter board.
Procedure for removing and replacing the keyboard assembly.
Steps to replace the AC power supply module.
Procedure for removing and replacing the DC fan.
Steps for removing and replacing the instrument's speaker.
Instructions for replacing the optional tracking generator module.
Instructions for cleaning the instrument's exterior surfaces.
Procedures for safely cleaning internal components.
Guidelines for inspecting chassis, boards, and components for damage.
Step-by-step guide to replace the SRAM backup battery.
Introduction to the section listing replaceable parts and assemblies.
Part numbers and descriptions for major assemblies in the 2398.
Part numbers and descriptions for the can cover components.
Part numbers for major structural components like panels and frames.
Part numbers for the processor board and its components.
Part numbers and descriptions for various internal wiring harnesses.
Details connection types, pinouts, and signals for instrument interfaces.
Pin-out table and description for the GPIB interface connector.
Pin-out table and description for the RS-232 serial communication connector.
Pin-out table and description for the printer interface connector.
Pin-out details for the optional DC power input connector.
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