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6-24
HP 85106D mm-Wave System
HP 85105A mm-Wave Controller
HP 85105A Troubleshooting Procedures
A15 Primary and A6
Secondary Regulator
Board Assembly
Use a digital voltmeter to check the voltages and an oscilloscope to check
the ripple.
HP-IB Address Switch
Set the switch as indicated in Figure 6-10 (the dark side of the switch is
depressed). The HP-IB 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
is displayed on the HP 8510 screen. Decimal twenty one,
binary 10101 (on, off, on, off, on) is the default setting.
Figure 6-10
Instrument HP-IB Switch Setting
Table 6-2
Power Supply Voltages
Nominal Voltage
Test Point
Voltage Range
Maximum Ripple
Peak to Peak
+ 14.85 Vdc
A15TP3
+14.10 to +15.60
2 mv
- 14.85 Vdc
A15TP4
-14.10 to -15.60
2 mv
+ 9.20 Vdc
A6TP1
+9.10 to +9.30
2 mv
+8.00 Vdc
A15TP2
+7.60 to +8.40
2 mv
+5.05 Vdc
A15TP1
+ 4.75 to 5.25
2 mv
Summary of Contents for 85106D
Page 11: ...x HP 85106D mm Wave System ...
Page 117: ...4 24 HP 85106D mm Wave System Service and Troubleshooting Check Unratioed Power Levels ...
Page 139: ...5 22 HP 85106D mm Wave System HP 85104A Test Set Module Troubleshooting Procedures ...
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Page 238: ...B 2 HP 85106D mm Wave System Upgrade Paths ...
Page 243: ...HP 85106D mm Wave System v work surface installation 1 12 ...
Page 244: ... vi HP 85106D mm Wave System ...