Troubleshooting and Error Codes
Troubleshoot
ing and Error Codes
Possible pro
blems that you may encounter when measuring current with the
TCPA300 and TCPA400 are available. (See Table 6.) Use this as a quick
troubleshooting reference.
Table 6 : Troubleshooting
Problem Remedy
Amplifier will not power on Check that the amplifier is plugged into a working AC outlet.
Defective amplifier. R efer the instrument to qualified service personnel for repair. To
help determine which module is defective, a troubleshooting section is available in the
service manual.
Front panel displays an error status.
Error Status LEDs are on the lower-left
section of the amplifier front panel
Note the error status and correct the condition. The error status is labeled on the front
panel. For example, if the PROBE OPEN LED is lit, close and lock the probe jaws.
The AC and DC COUPLING LEDs are
flashing alternately
The Error Status LEDs are displaying an error code. Error codes descriptions are
available. (See Table 7 on page 46.) Note the error code and turn the instrument off, then
on. If the error condition persists, refer the instrument to qualified service personnel
for repair.
If the RANGE and DEGAUSS LED are both off, and one of the COUPLING LEDs is lit,
this indicates the amplifier is not detecting a probe. Reconnect the probe.
All LEDs flashing indicate a thermal shutdown. Power-cycle the system and let it cool for
15 minutes before taking measurements. In most cases, 15 m inutes is sufficient.
All LEDs are flashing All LEDs flashing indicates a thermal shutdown. Power-cycle the system and let i t cool
before taking m easurements. In most cases, 15 minutes is sufficient.
OVERLOAD LED remains lit red after
removing probe from circuit
Probe transformer or amplifier main board is defective.
OVERLOAD LED remains lit orange Degauss the probe. If the OVERLOAD LED remains lit orange, disconnect the probe
from the circuit and let it cool for 15 minutes before degaussing again. If this does not
clear the LED, the probe transformer or probe Hall device may be defective. Connect
another probe to the amplifier, or c onnect the probe in question to another amplifier.
Probe does not degauss successfully
and LEDs are lighted in an unfamiliar
pattern
Amplifier is displaying an error code or is out of calibration or defective. (See Table 7 on
page 46.) If another amplifier is available, try to degauss the probe on the other amplifier,
to help isolate the cause.
Component failure on probe circuit board: broken adjustment/wire/etc. Disassemble
probe, repair/replace component or refer the instrument to qualified service personnel
for repair.
Cannot degauss the probe Current Probe is not locked. Lock the current probe.
Current Probe is improperly connected to the amplifier input connector.
Amplifier output is not terminated into 50 Ω load. Set input impedance of oscilloscope
to 50 Ω or connect a 50 Ω feed-through termination at the oscilloscope input, not at
the amplifier output.
Current Probe is defective or not compatible with the amplifier type.
42 TCPA300/400 Amplifiers and TCP300A/400 Series Current Probes User Manual
To Next Page
Loading...
Need help?
General
