Agilent Technologies 89410A Service Manual page 146

Adjusting the Analyzer
To adjust auto-range detect level
3
Adjust A36 R114.
a Connect the digital voltmeter to A36 TP4 and TP1 (ground).
b
Adjust A36 R114 for a voltmeter reading of -1.259
using the flat-edge adjustment tool.
4
Adjust A36 R120.
a Connect the digital voltmeter to A36 TP5 and TP1 (ground).
b Press the following keys:
[ System Utility ]
[ auto cal off ]
]
[ more
[ ]
diagnostics
[
service functions
1125
[ enter ]
[
special test modes
[ ]
trigger
[ ]
level DAC
128
[ enter ]
c
Adjust A36 R120 for a voltmeter reading of 0 ±2 mVdc using the
flat-edge adjustment tool.
2-30
]
]
±
0.003 Vdc