Troubleshooting and Error Codes
For example, af
ter you press the PROBE DEGAUSS AUTOBALANCE button, if
the AC and DC Coupling LEDs are flashing, then an error code is being displayed:
1. In this exampl
e, the NOT TERMINATED INTO 50 Ω LED is illuminated.
2. This four-bit binary code (0010) indicates an Error Code 2: a null error in the
DC offset ci
rcuit occurred. (See Figure 27.)
Figure 27: Interpreting the error code display
A complete list of error codes for the amplifier is listed in the table. (See Table 7.)
Table 7: Amplifier error codes
Code Descrip
tion of error
Action t
o take
1
The am p
lifier detected
a probe, but a valid Hall
device was not detected.
Discon
nect and reattach the probe to the amplifier.
Power cycle the ampli fier. Check probe transformer
(defective Hall device). If these steps do not resolve the
error,
the amplifier needs service. May also be caused
by a shorted or open wire in the probe cable assembly.
2
3
An err
or occurred while
nulling out the internal DC
offset of the amplifi er.
Power cycle the amplifier and run the
Degauss/Autobalance adjustment routine again. If the
erro
r reoccurs, then the amplifier needs service.
4
5
TCPA
300 ONLY - An
error occurred while the
amplifier was adjusting
the
power supply levels
for the different Range
settings.
Powe
rcycletheamplifi er and run the
Degauss/Autobalance adjustment routine again. If the
error reoccurs, then perform the following steps:
1) R
emove the probe from the circuit.
2) Check probe - The signal path through the probe
transformer may be open or shorted, which can
be c
aused by defective probe transformer or cable
assembly. If the above steps do not resolve the error,
the amplifier needs service.
6
7
An error occurred
while the amplifier was
ad
justing the Overload
trip points.
Power cycle the amplifier and run the
De
gauss/Autobalance adjustment routine again. If the
error reoccurs, then remove the probe from the circuit.
If this does not resolve the error, the amplifier needs
s
ervice.
8
9
Unused
46 TCPA300/400 Amplifiers and TCP300A/400 Series Current Probes User Manual
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