Tektronix TCP300A, User Manual

Page: 65 / 82

Troubleshooting and Error Codes
Table 7: Ampli fi er error codes (cont.)
Code Description of error Action to take
10
11 An error occurred while
nulling out the internal DC
offset of the ampli
fi er.
Power cycle the ampli fi er 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 ampli
fi er needs
service.
12
13
14 The ampli fi er 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 Hall device with
excessive noise or drift in the probe transformer,
or a shorted or open wire in the probe cable
assembly. Power cycle the ampli
fi er and run the
Degauss/Autobalance adjustment routine again. If
these steps do not resolve the error, the ampli
fi er needs
service.
15
Unspeci fi ed error (internal
software error)
Power cycle the ampli fi er and run the
Degauss/Autobalance adjustment routine again. If the
error reoccurs, then the ampli
fi er needs service.
Correcting the Cause of an Error Code
After interpreting the error code, disconnect the probe from the circuit and
degauss the probe again. Take the measurement again. If the error code persists,
contact your Tektronix Service Center.
Shutdown Error
If all LEDs fl ash at the same time, a shutdown condition exists. If this occurs, turn
off the ampli fi er and disconnect the probe from the circuit under test. Turning off
the ampli fi er clears the error register.
A shutdown condition can be caused by exceeding the frequency/current
speci
fi cations. Verify that you are not exceeding the speci fi cations and let the
probe and ampli fi er cool before using them again. In most cases, 15 minutes is
suf fi cient. If the measurement you were taking was within the probe and ampli fi er
speci fi cations, degauss the probe and take the measurement again. If the shutdown
error persists, contact your Tektronix Service Center.
TCPA300/400 Ampli fi ers and TCP300A/400 Series Current Probes User Manual 47