Agilent Technologies 35670A Service Manual page 260

Adjusting the Analyzer
To adjust the input dc offset
For the optional four channel analyzer, do the following to adjust input dc offset:
G
• Set the power switch to on ( I ).
• Press the following keys:
[
System Utility
[ ]
MORE
[
SERVICE TESTS
[
ADJUSTMTS
[
CHANNEL 1 ADJUSTMNT
[ ]
OFFSET
Wait for the analyzer to set up the adjustment. The analyzer is ready when
the adjustment message appears on the screen.
• Adjust A2 R39 in the lower slot for a Y: reading of 90 dBVrms or less.
• Press the following keys:
[ ]
Rtn
[
CHANNEL 2 ADJUSTMNT
[ ]
OFFSET
Wait for the analyzer to set up the adjustment. The analyzer is ready when
the adjustment message appears on the screen.
• Adjust A2 R39 in the upper slot for a Y: reading of 90 dBVrms or less.
• Press the following keys:
[ ]
Rtn
[
CHANNEL 3 ADJUSTMNT
[ ]
OFFSET
Wait for the analyzer to set up the adjustment. The analyzer is ready when
the adjustment message appears on the screen.
• Adjust A2 R539 in the lower slot for a Y: reading of 90 dBVrms or less.
• Press the following keys:
[ ]
Rtn
[
CHANNEL 4 ADJUSTMNT
[ ]
OFFSET
Wait for the analyzer to set up the adjustment. The analyzer is ready when
the adjustment message appears on the screen.
• Adjust A2 R539 in the upper slot for a Y: reading of 90 dBVrms or less.
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Agilent 35670A