User manual

lpErrorDoc.txt
While executing the internal I/Q calibration, a failure occurred.
Please check the hardware.
520 Sampler Loop unlocked
One of the signal generator's samplers is unlocked or one of the
sampler circuits are malfunctioning. The instrument may require
service.
521 YO Loop unlocked
The YIG oscillator phase lock loop is unlocked. The problem may be
due to a bad calibration. If not, then the instrument may require
service.
522 Demodulator Unleveled; Input amplitude overrange
The signal level is too low. Adjust the signal level for the VSA
input.
522 Demodulator Unleveled; Input amplitude underrange
The signal level is too high. Adjust the signal level for the VSA
input.
523 Power meter timeout; Power meter timeout during user flatness
calibration
The power meter times out when taking a reading during user
flatness calibration. Check GPIB configuration, address and cable
connections.
524 Power meter reading invalid; Power meter reading invalid during user
flatness calibration
The power meter reading is invalid during user flatness
calibration. Check GPIB configuration, address and cable
connections.
525 GPIB controller not enabled; Cannot set instrument into the GPIB
controller mode
At the start of user flatness calibration, the instrument could not
be set to the GPIB controller mode. Check GPIB configuration,
address, and cable connections.
526 GPIB device not assigned; GPIB device could not be assigned
During the initialization of the user flatness calibration, the
external power meter could not be assigned to the GPIB address.
Check GPIB configuration, address, and cable connections.
527 Frequency calibration table empty; User Flatness frequency calibration
table empty
There were no frequency calibration points entered in the user
flatness list table
535 Proper channels not enabled; DPCH channel one is not enabled.
DPCH channel one must be enabled for channel balancing to occur.
535 Proper channels not enabled; No OCNS channels are enabled.
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