10-38 Service Guide
Service Key Menus and Error Messages 8719ET/20ET/22ET
Service Related Error Messages in Alphabetical Order 8719ES/20ES/22ES
RF Network Analyzers
PHASE LOCK LOST
Error Number
8
Phase lock was acquired but then lost. Refer to Chapter 7 , “Source
Troubleshooting.”
POSSIBLE FALSE LOCK
Error Number
6
Phase lock has been achieved, but the source may be phase locked to the wrong
harmonic of the synthesizer. Perform the “Source Pretune Correction Constants
(Test 43)” on page 3-6.
POWER METER INVALID
Error Number
116
The power meter indicates an out-of-range condition. Check the test setup.
POWER METER NOT SETTLED
Error Number
118
Sequential power meter readings are not consistent. Verify that the equipment
is set up correctly. If so, preset the instrument and restart the operation.
POWER SUPPLY HOT!
Error Number
21
The temperature sensors on the A8 post-regulator assembly have detected an
over-temperature condition. The power supplies regulated on the post-regulator
have been shut down. Refer to Chapter 5 , “Power Supply Troubleshooting.”
POWER SUPPLY SHUT DOWN!
Error Number
22
One or more supplies on the A8 post-regulator assembly have been shut down
due to an over-current, over-voltage, or under-voltage condition. Refer to
Chapter 5 , “Power Supply Troubleshooting.”
PRINTER: error
Error Number
175
The parallel port printer is malfunctioning. The analyzer cannot complete the
copy function.
PRINTER: not handshaking
Error Number
177
The printer at the parallel port is not responding.
PRINTER: not on, not connected, wrong addrs
Error Number
24
The printer does not respond to control. Verify power to the printer, and check
the GPIB connection between the analyzer and the printer. Ensure that the
printer address recognized by the analyzer matches the GPIB address set on the
printer itself.
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