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6-4 MG369XB OM
Error and Warning/Status Messages Operator Maintenance
Self-test error messages normally indicate the failure of an
internal component or assembly of the signal generator.
There are no operator serviceable components inside. Refer
servicing of the instrument to qualified service technicians.
To prevent the risk of electrical shock or damage to preci
-
sion components, do not remove the equipment covers.
WARNING
Error Message Description/Remarks
Error 100
DVM Ground Offset Failed
Indicates that a calibration-related problem. Do Not Attempt to Operate! Refer the
instrument to a qualified service technician.
Error 101
DVM Positive 10V Reference
Indicates that either a calibration-related problem or a defective +10 Volt reference.
Do Not Attempt to Operate! Refer the instrument to a qualified service technician.
Error 102
DVM Negative 10V Reference
Indicates that either a calibration-related problem or a defective –10 Volt reference .
Do Not Attempt to Operate! Refer the instrument to a qualified service technician.
Error 107
Sweep Time Check Failed
Indicates that the sweep timing is out of tolerance or has failed. If analog sweeps
can be obtained, the MG369XB is still operable in a degraded mode. If analog
sweeps can not be obtained, the MG369XB is operable only in CW or step sweep
frequency modes.
Error 108
Crystal Oven Cold
Indicates that the 100 MHz crystal oven, or the Option 16 high-stability 10 MHz
crystal oscillator, has not reached operating temperature. The MG369XB is still op-
erable, but frequency accuracy and stability may be degraded.
Error 109
The 100MHz Reference is not
Locked to the External
Reference
Indicates that the reference loop is not phase-locked to the external 10 MHz refer
-
ence. The reference loop may phase-lock to the internal 100 MHz time base; con
-
sequently, the MG369XB would continue to operate normally.
Error 110
The 100MHz Reference is not
Locked to the High Stability
10MHz Crystal Oscillator
Indicates that the reference loop is not phase-locked to the optional, high stability
10 MHz crystal oscillator. The reference loop may phase-lock to the internal
100 MHz time base; consequently, the MG369XB will continue to operate normally.
Error 112
Coarse Loop Osc Failed
Indicates that the coarse loop B oscillator is not phase-locked. The MG369XB is still
operable, but the accuracy and stability of the frequency outputs are greatly re
-
duced.
Error 113
YIG Loop Osc Failed
Indicates that the YIG loop is not phase-locked. The MG369XB is still operable, but
the accuracy and stability of the frequency outputs are greatly reduced.
Error 114
Down Converter LO not Locked
Indicates that the local oscillator in the down converter assembly is not
phase-locked. The MG369XB is still operable, but the accuracy and stability of fre
-
quency outputs below 2 GHz is greatly reduced.
Table 6-1. Self-Test Error Messages (1 of 4)