8-4 Chapter 8
Receiver Troubleshooting
Receiver Failure Error Messages
Receiver Failure Error Messages
The error messages which indicate receiver group problems may be caused by the
instrument itself or by external devices or connections. The following three error messages
share the same description.
• CAUTION: OVERLOAD ON INPUT A, POWER REDUCED
• CAUTION: OVERLOAD ON INPUT B, POWER REDUCED
• CAUTION: OVERLOAD ON INPUT R, POWER REDUCED
If any of the above error messages appear, the analyzer has exceeded approximately
+14 dBm at one of the test ports. The RF output power is automatically reduced to
−85 dBm. The annotation P↓ appears in the left margin of the display to indicate that the
power trip function has been activated. To reset the analyzer's power and regain control of
the power level, do the following:
1. Remove any devices under test which may have contributed excess power to the input.
2. Press to return the power level to the preset
state.
• If the power trip indicator (P↓) does not reappear, reconfigure the test setup to keep
input power levels at 0 dBm or below.
•If P↓ reappears, go to “Observe the A and B Input Traces” on page 4-17.
Power 0 x1
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