Philips CARDIOMD Service Manual page 66

Detector Calibration
Procedure Details
The High Voltage Calibration page appears.
5. Ensure that all radioactive sources are re-
moved.
6. Click Start to begin the calibration.
The display shows the PMT working values
that are being read at the EDC board.
The HV continues to step upwards until all
PMT's have their autotune control loop in their
dynamic range, which is reflected by the work
point value. Once this has taken place, the HV
is increased by another 50 V to ensure that all
PMT's have sufficient gain range. The HV
value is stored on the acquisition PC.
When the High Voltage calibration is com-
plete, a message appears indicating that the
high voltage calibration is done.
7. Select OK to close the message.
8. Click Exit to close the High Voltage page.
4-10 CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1