Troubleshooting the Test Set
Troubleshooting Procedures
Table
LSN | TLK | SRQ | REM | Time (Following | |
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Pass ROM Test | OFF | OFF | ON | ON | 0.5 to 0.2 seconds |
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Start RAM Test | OFF | OFF | OFF | ON | N/A |
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Pass RAM Test | OFF | OFF | OFF | OFF | after 2 seconds |
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HP 85102 IF The service adapter can substitute as a test set by returning the 20 MHz IF Amplifier Test signal from the HP 85102 to the amplifier on the HP 85102. Doing this
determines whether a fault is in the test set or is in the HP 85102.
Figure 5-8 Service Adapter Connections
Using the Service Adapter
1.Connect the service adapter as shown in Figure
INSTRUMENT STATE [PRESET]
MENUS [MARKER]
STIMULUS [MENU]
{STEP}
PARAMETER [MENU]
2.Examine each user parameter by pressing the {USER 1 a1} through {USER 4 b1} softkeys to observe unratioed power level traces at each channel.
3.The traces should be flat lines, quite close to one another, as indicated by the marker value (typically about