Anritsu 681XXC - Manual (Page 193)

6-4 681XXC OM
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 precision
components, do not remove the equipment covers.
WARNING
Error Message Description/Remarks
Error 100
DVM Ground Offset Failed Indicates a calibration-related problem. Do Not Attempt to Operate! Refer the
instrument to a qualified service technician.
Error 101
DVM Positive 10V Reference Indicates 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 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 105
Power Supply Voltage(s) out
of Regulation Indicates one or more of the voltages from the power supply are out of regulation.
Do Not Attempt to Operate! Refer the instrument to a qualified service technician.
Error 106
Power Supply not Locked Indicates the power supply is not phase-locked to the 400 kHz reference frequency.
The 681XXC is still operable in a degraded mode. The RF output may contain more
spurious signals than normal.
Error 107
Sweep Time Check Failed Indicates the sweep timing is out of tolerance or has failed. If analog sweeps can be
obtained, the 681XXC is still operable in a degraded mode. If analog sweeps can
not be obtained, the 681XXC is operable only in CW or step sweep frequency
modes.
Error 108
Crystal Oven Cold Indicates the 100 MHz crystal oven or the Option 16 high-stability 10 MHz crystal
oscillator has not reached operating temperature. The 681XXC is still operable, but
frequency accuracy and stability may be degraded.
Error 109
The 100MHz Reference is not
Locked to the External
Reference Indicates the reference loop is not phase-locked to the external 10 MHz reference.
The reference loop may phase-lock to the internal 100 MHz time base; conse-
quently, the 681XXC would continue to operate normally.
Error 110
The 100MHz Reference is not
Locked to the High Stability
10MHz Crystal Oscillator Indicates 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 681XXC would continue to operate normally.
Table 6-1. Self-Test Error Messages (1 of 4)
OPERATOR ERROR AND WARNING/
MAINTENANCE STATUS MESSAGES