A15 Primary Regulator Board Assembly; Gpib Address Switch; Fuses - Agilent Technologies 8511B Operating And Service Manual

A15 Primary
Regulator Board
Assembly
Table 6-2
Nominal Voltage
+
5.05 Vdc
−
5.20 Vdc
+
14.85 Vdc
−
14.85 Vdc

GPIB Address Switch

Figure 6-4

Fuses

Test Set Troubleshooting
Troubleshooting Procedures
Use a digital voltmeter to check the voltages and an oscilloscope to check
the ripple in Table
Power Supply Voltages
Test Point
A15TP1
A15PT2
A15TP3
A15TP6
GPIB Address Switch
Set the switch as indicated in
where the switch is depressed). The GPIB address switch is on the
instrument rear panel. It is easy to access but need not be changed unless the
error message
SYSTEM BUS ADDRESS ERROR
Decimal twenty, binary 00101 (off, off, on, off, on) is the default setting.
Instrument GPIB Switch Setting
The locations of the fuses used in the test set are illustrated in
page 6-5. The values of these fuses and their part numbers may be found in
Chapter 8, "Replaceable
6-6 Agilent 8511B Test Set Operating and Service Manual
6-2.
Voltage Range
+
4.75 to +5.25
− −
4.90 to 5.50
+ +
14.10 to 15.60
− −
14.10 to 15.60
Figure 6-4 (the dark side of the figure indicates
is displayed on the 8510 screen.
Parts".
Maximum Ripple
2 mV
2 mV
2 mV
2 mV
Figure 6-3 on