To Adjust Oven Shutdown - Agilent Technologies 89410A Service Manual

To adjust oven shutdown

This procedure adjusts the optional A85 Oven assembly's heater
shutdown trip point. When the oven is cold, the heater shutdown circuit
disconnects the oven output from the rear panel output connector. After
the oven has been on long enough for the frequency to be stable, the
heater shutdown circuit connects the oven output to the rear panel
output connector.
The Agilent 89410A Vector Signal Analyzer must be off for at least 8
hours before this adjustment is made. Once power is applied, the
adjustment MUST be completed within FIVE MINUTES.
Equipment Required:
Spectrum analyzer
BNC cable
Flat-edge adjustment tool,
Agilent part number 8710-1928
WARNING:
power applied. Energy available at may points can, if contacted, result in personal
injury.
Even with power removed, there can be sufficient stored energy in some circuits to
cause personal injury. These voltages will discharge to a relatively safe level
approximately five minutes after the power cord is disconnected.
1
This procedure is performed with protective covers removed and
Remove the power supply shield.
a
Check that the power switch is off ( O ).
The Agilent 89410A must be off for at least 8 hours before doing
this adjustment.
b Remove the power supply shield. The power supply shield is
located behind the display.
Adjusting the Analyzer
To adjust oven shutdown
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