Anritsu 681XXC - Manual (Page 195)

6-6 681XXC OM
Error Message Description/Remarks
Error 125
8.4 – 20 GHz Unlocked and
Unleveled Indicates a failure of the 8.4 to 20 GHz YIG-tuned oscillator. Do Not Attempt to
Operate! Refer the instrument to a qualified service techician.
Error 126
2 – 8.4 GHz Unlocked and
Unleveled Indicates a failure of the 2 to 8.4 GHz YIG-tuned oscillator. Do Not Attempt to Op-
erate! Refer the instrument to a qualified service techician.
Error 127
Detector Input Circuit
Failed Indicates a failure of the level detector input circuitry on the A10 PCB. Use caution
and always determine the output power level when operating the 681XXC in this
condition.
Error 128
.01 – 2 GHz Unleveled Indicates a failure of the Down Converter leveling circuitry. The 681XXC operates
normally but will have unleveled RF output in the 0.01 - 2 GHz frequency range.
Error 129
Switched Filter or Level
Detector Failed Indicates a failure of either the switched filter or level detector circuitry. The 681XXC
may or may not produce an RF output. Use caution and always determine the out-
put power level when operating the 681XXC in this condition.
Error 130
2 – 3.3 GH Switched Filter Indicates a failure in the 2 - 3.3 GHz switched filter path within the switched filter
assembly. The 681XXC may or may not produce an RF output in this frequency
range. Use caution and always determine the output power level when operating
the 681XXC in this condition.
Error 131
3.3 – 5.5 GH Switched Filter Indicates a failure in the 3.3 - 5.5 GHz switched filter path within the switched filter
assembly. The 681XXC may or may not produce an RF output in this frequency
range. Use caution and always determine the output power level when operating
the 681XXC in this condition.
Error 132
5.5 – 8.4 GH Switched Filter Indicates a failure in the 5.5 - 8.4 GHz switched filter path within the switched filter
assembly. The 681XXC may or may not produce an RF output in this frequency
range. Use caution and always determine the output power level when operating
the 681XXC in this condition.
Error 133
8.4 – 13.25 GH Switched Filter Indicates a failure in the 8.4 - 13.25 GHz switched filter path within the switched
filter assembly. The 681XXC may or may not produce an RF output in this fre-
quency range. Use caution and always determine the output power level when
operating the 681XXC in this condition.
Error 134
13.25 – 20 GH Switched Filter Indicates a failure in the 13.25 - 20 GHz switched filter path within the switched filter
assembly. The 681XXC may or may not produce an RF output in this frequency
range. Use caution and always determine the output power level when operating
the 681XXC in this condition.
Error 135
Modulator or Driver Failed Indicates a failure of the modulator in the switched filter assembly or the modulator
driver circuitry on the A9 PCB. The 681XXC may or may not produce an RF output.
Use caution and always determine the output power level when operating the
681XXC in this condition.
Table 6-1. Self-Test Error Messages (3 of 4)
OPERATOR ERROR AND WARNING/
MAINTENANCE STATUS MESSAGES