Troubleshooting and Error Codes
Table 7: Amplifier error codes (cont.)
Code Description of error Action to take
10
11
An error occurred while
nulling out the internal DC
offset of the amplifier.
Power cycle the ampli fier and run the
Degauss/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
service.
12
13
14
The a mplifier cannot null
out the probe DC offset
voltage.
Remove the probe from the circuit. Error 12 will
most likely occur when the probe is connected to an
energized circuit when a Degauss/Autobalance routine
is initiated. Check probe transformer (defective Hall
device).
This error may also be caused by a H all device with
excessive noise or drift in the probe transformer,
or a shorted or open wire in the probe cable
assembly. Power cycle the amplifier and run the
Degauss/Autobalance adjustment routine again. If
these steps do not resolve the error, the amplifier needs
service.
15
Unspecified error (internal
software error)
Power cycle the ampli fier and run the
Degauss/Autobalance adjustment routine again. If the
error reoccurs, then the amplifier needs service.
Correcting the Cause of an Error Code
After interpreting the error code, disconnect the probe from the circuit and
dega
uss the probe again. Take the measurement again. If the error code persists,
contact your Tektronix Service Center.
Shutdown Error
If all LEDs flash at the same time, a shutdown condition exists. If this occurs, turn
off the amplifier and d isconnect the probe from the circuit under test. Turning off
the amplifier clears the error register.
A shutdown condition can be caused by exceeding the frequency/current
specifications. Verify that you are not exceeding the spec ifications and let the
probe and amplifier cool before using them again. In most cases, 15 minutes is
sufficient. If the measurement you were taking was within the probe and amplifier
specifications, d egauss the probe and take the measurement again. If the shutdown
error persists, contact your Tektronix Service Center.
TCPA300/400 Amplifiers and TCP300A/400 Series Current Probes User Manual 47