Fluke Biomedical TNT 12000 - Manual (Page 131)

Troubleshooting
Introduction
G
G-3
Table G-2. Troubleshooting the DoseMate (Cont.)
Problem Cause Corrections
The “Bias Voltage Error” message
is displayed The Ion Chamber bias voltage is
above 340 volts or below 260
volts. When this error occurs,
disconnect the Ion Chamber from
the DoseMate input connector
and turn the DoseMate off then on
again. If the Bias Voltage Error
does not occur, there may be a
short in the Ion Chamber or cable.
If the Bias Voltage Error remains,
the DoseMate bias voltage supply
may be faulty and should be
returned to Fluke Biomedical for
service.
“Resetting…Please Wait…”
message is displayed This message displays when you
select Reset in the Measurement
Screen or when the DoseMate
dosimeter automatically resets.
NOTE: Do not make an exposure
when the “Resetting…Please
Wait…” message is displayed. If
an exposure is initiated while this
message is displayed, the
message will remain until the
exposure is ended.
Reduce the x-ray intensity by
reducing mA or increasing source
to detector distance. Measured quantities showing
HIGH This message indicates an over
range. The current or charge from
the Ion Chamber is above the
maximum.
Use a smaller, less sensitive Ion
Chamber.
High leakage A faulty ion chamber of cable. Disconnect the ion chamber
and/or cable and see if the high
leakage message goes away. If
the high leakage message goes
away, the ion chamber or cable
may be faulty and should be
returned to Fluke Biomedical for
service. If the high leakage
message persists after the ion
chamber and cable have been
disconnected, the DoseMate may
be faulty and should be returned
to Fluke Biomedical for service.