4-10
Verification and Service Information
Service Information
Adjustment Procedure
The only adjustment for the Agilent 11982A is the +5.7 V dc voltage supply. To
adjust the power supply, use an Agilent 3456A digital multimeter (or equiva-
lent) to measure the dc output voltage at the power supply terminals. If the dc
output voltage is not within tolerance, adjust the power supply.
W A R N I N G
Only trained service personnel should perform measurements inside
the instrument chassis. Use extreme care; the exposed terminals on
the power supply transformer carry ac line voltage; you can be killed
or seriously injured if you contact them when power is applied.
1
On the power supply board, connect the multimeter between the –OUT
terminal (ground) and the +OUT terminal of E2 on the dc power supply.
2
Measure the power supply output voltage. The voltage reading should be
+5.7 V dc ±50 mV.
Table 4-1. Required Tools
Description
Agilent Part Number
Check Digit
Small Pozidriv screwdriver
8710-0899
0
Large Pozidriv screwdriver
8710-0900
4
Wire cutter
8710-0012
9
Long-nose pliers
8710-0030
1
5/16 nut driver
8720-0015
3
3/8 nut driver
8720-0005
1
7 mm nut driver
8710-1217
8
Note
The +5 V power supply circuit has current-limiting and overvoltage control. If the +5 V
power supply is adjusted above +5.8 V (approximate), the +5 V power supply will shut-
down.
