7-2
Adjustments and Calibration
Introduction
Introduction
This chapter contains information to perform the necessary calibrations and adjustments
for periodic maintenance or following repairs. Each year the timebase and periodic
calibration adjustments should be performed. Also, the overall performance of the
instrument should be verified each year with the automated performance tests in chapter 3
“Running Performance Tests”.
The calibrations and adjustments covered in this chapter are divided into three sections:
❒ Timebase Adjustments
• Standard Timebase
• Optional High Stability Timebase
❒ Periodic Calibrations (ROM based)
• Voltmeter Reference
• Audio Frequency Generator Gain
• External Modulation Path Gain
• Audio Analyzer 1 Offset
❒ Sum Loop Adjustment Procedure