HP Cable Box 8591C manual CAL Using Default Data, CAL Zero Fail, Conf Test Fail

If You Have a Problem

Error Messages

CAL: USING DEFAULT DATA

Indicates that the calibration data is corrupt and the default correction factors are being used. Interruption of the self-calibration routines or an error can cause this problem. (M)

CAL: ZERO FAIL

The cable TV analyzer could not set up the tuning sensitivity of the main coil. If this message appears, press [FREQUENCY), -37, (Hz_), (CAL), Mare 1 of 4 , More 2 of 4 , DEFAULT CAL DATA , and perform the CAL FREQ routine again. (H)

Cannot engage phase lock with current CAL FREQ data

Indicates that the CAL FREQ routine needs to be performed before phase locking can be turned on. (U)

Cannot reach N dB points

Indicates that the number of dB specified for the N dB PTS function is greater than the distance of the signal peak from the cable TV analyzer noise floor or peak threshold. (U)

Check trigger input

Indicates that the cable TV analyzer needs an external trigger signal to use the time-gating functions. Before using the time-gating functions, you should ensure there is a trigger pulse connected to the GATE TRIGGER INPUT connector on the rear panel of cable TV analyzer and that the GATE OUTPUT is connected the EXT TRIG INPUT connector. (U)

CMD ERR:- - -

The specified programming command is not recognized by the cable TV analyzer. Press ANNOTATN ON OFF to clear. (U)

CONF TEST FAIL

Indicates that the confidence test failed. If this happens, ensure that the CAL OUT connector is connected to the cable TV analyzer input, perform the CAL FREQ & AMPTD routine, and then perform the confidence test again. This message also sets SRQ 110. (H) and (U)

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