Chapter 14 621
Analyzer Messages
Interpreting Analyzer Messages
CAL:_ _ _ (M)
During the self-calibration routine, messages may appear on the
display to indicate how the calibration routines are progressing. For
example, sweep, freq, span, MC delay, FM coil, and atten can appear
on the analyzer display.
Please note that it is normal for the φ LOCK OFF and REF
UNLOCK error messages to appear briefly during
CAL FREQ.
Troubleshooting Hints
If the firmware detects a problem during the self-calibration routine,
the routine will stop and display an error message (H). Refer to the
appropriate error-message description in this section.
CAL:_ _ _: done Press CAL STORE to save (M)
Indicates that the self-calibration routine is finished and that you
should press CAL STORE.
CAL: cannot execute CALAMP
enter: 0 dB PREAMP GAIN (U)(H)
The preamplifier gain is not set to 0 dB. The preamplifier gain must be
set to 0 dB for the CAL AMPTD routine to be performed.
Troubleshooting Hints
Reset the preamplifier gain to 0 dB using the following routines.
1. Press
AMPLITUDE, More 1 of 3, EXTERNAL PREAMPG and set the
preamplifier gain to 0 dB.
2. Perform the CAL AMPTD routine.
3. Press
CAL STORE to store the new calibration factors and the
preamplifier setting of 0 dB.
Please note that pressing PRESET does not initialize the preamp-gain
setting to 0 dB.
If this message is still displayed after resetting the preamp gain, it is
likely there is a failure in RAM on the A16 processor/video assembly.
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