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6-10 MG369XB OM
Error and Warning/Status Messages Operator Maintenance
Warning/Status
Message
Description
COLD
This warning message indicates that the 100 MHz
Crystal oven (or the 10 MHz Crystal oven if Option 16 is
installed) has not reached operating temperature.
Normally displayed during a cold start of the MG369XB.
If the message is displayed during normal operation, it
could indicate a malfunction. Run self-test to verify.
UNLEVELED
Displayed when the RF output goes unleveled.
Normally caused by exceeding the specified lev
-
eled-power rating. Reducing the power level usually
clears the warning message. If the warning message is
displayed only when AM is selected ON, the modulating
signal may be driving the RF output unleveled. Re
-
ducing the modulating signal or adjusting the power
level usually clears the warning.
UNLOCKED
When Unlocked/Narrow FM or Unlocked/Wide FM is
selected ON, this warning message appears indicating
that the instrument is not phase-locked during this FM
mode of operation.
REDUCE RATE
This warning message is displayed when the AM rate,
FM rate, or FM rate is set >100 kHz for a non-sine
wave modulating waveform. Amplitude, frequency, or
phase modulation of the output signal will continue but
the modulating waveform may be distorted.
SLOPE
This status message indicates that a power slope cor
-
rection has been applied to the ALC.
EXTL REF
This status message indicates that an external 10 MHz
signal is being used as the reference signal for the
MG369XB.
OFFSET
This status message indicates that a constant (offset)
has been applied to the displayed power level.
CW RAMP
This status message appears on all CW menu displays
to indicate that the CW ramp has been turned on.
USER 1...5
This status message indicates that a user level flatness
correction power-offset table has been applied to the
ALC.
Table 6-3. Possible Warning/Status Messages during Normal Operations