To Adjust Input Offset - Agilent Technologies 89410A Service Manual

Adjusting the Analyzer

To adjust input offset

To adjust input offset
This procedure adjusts the A10 Analog Input assembly's offset voltage to
zero volts.
Perform the previous adjustment before doing this adjustment.
Equipment Required:
Digital multimeter
Extender board, Agilent part number 89410-B1001
50
Flat-edge adjustment tool, Agilent part number 8710-1928
1
2
3
4
5
6
To continue the input adjustments, go to the next adjustment.
2-16
Ω
termination
Remove all external connections.
Ω
Connect a 50 termination to the input.
Press the following keys:
]
[ Return
[ ]
FET offset
[ setup 1 ]
Set the multimeter to Vdc.
Connect the multimeter to A10 TP30 and A10 TP26 (gnd) using test
leads.
Adjust A10 R61 for a multimeter reading of 0 ±100 mV using the
flat-edge adjustment tool.