PCM-2 Manual.pdf - Voss Associates

CALIBRAnON
Background Plateau
Background plateaus may now be run for the hand probe board if it is installed and
communicating properly. Pressing F5 in the Select Detectors screen toggles the selection of the
hand probe detector. If the hand probe option is installed but the board is not communicating,
a message will appear in the Select Detectors screen informing the user that the hand probe is
not communicating. Pressing F5 when choosing to view plateau data also selects the hand probe
detector. Plateau data may be viewed even if the hand probe board has a communication failure.
Source Plateau
Source plateaus may now be run for the hand probe board if it is installed and communicating
properly. Pressing F5 in the Select Detectors screen toggles the selection of the hand probe
detector. If the hand probe option is installed but the board is not communicating, a message will
appear in the Select Detectors screen informing the user that the hand probe is not
communicating. Pressing F5 when choosing to view plateau data also selects the hand probe
detector. Plateau data may be viewed even if the hand probe board has a communication failure.
Efficiencies
The hand probe detector may now be selected for an efficiency test if the hand probe is installed
and is communicating properly. As for the plateaus, pressing F5 selects the hand probe detector
and starts the test. If the hand probe option is installed but the board is not communicating, a
message will appear in the Select Detectors screen informing the user that the hand probe is not
communicating. To view the test results, press F5 to select the hand probe detector. Efficiency
data may be viewed even if the hand probe board has a communication failure.
EDIT
Hand Probe Parameters
Six new parameters are available for the hand probe. An alarm setpoint may be entered for both
the alpha and the beta channels. This setpoint is expressed in the count rate units selected for
the PCM-2 (CPS or CPM). In addition, a weighting factor and a background sigma factor may
be entered for both the alpha and beta channels. These parameters are used in a "smoothing"
algorithm which has been incorporated for the hand probe readings to allow the user to control
the response time and the step change for the hand probe readings.
Ref. No. 2183IMI21831N0vember 1994