Fluke Biomedical 37-705 User Manual
Page 26
Nuclear Associates 37-705
Operators Manual
2-16
Calibrate Screen # 11
group
name
1
YES
2
YES
3
YES
4
NO
5
N/A
GROUP CHANNEL EXPOSE
Prior to initiating a calibration sequence, the operator may select the diodes within a group that will be
calibrated. The expose column shows the diode(s) that are to be calibrated by YES and the diode(s) that
are not to be calibrated by NO. Any channel(s) that have not been activated by the operator in either the
CALIBRATE - ADD or the CALIBRATE - EDIT options are indicated by N/A (not available). After the
appropriate selections have been made press the ENTER key.
The message "PLEASE WAIT' will be displayed while the unit zeroes the channel signals. After the chan-
nels are zeroed, the VeriDose V beeps and Calibrate Screen #12 will be displayed. If a channel is not
zeroed correctly, "ZERO ERR" will be displayed to the right of the appropriate channel. The cumulative
dose for each channel is displayed as the exposure is occurring.
Calibrate Screen # 12
Ch 1
0.0
Ch 4
OFF
104.3
cGy
cGy
Ch 2
0.0
Ch 5
OFF
99.8
cGy
cGy
Ch 3
55.1
ABORT
DONE
Several successive exposures may be averaged (up to 1000 cGy) by simply exposing the detectors to
repetitive exposures while the VeriDose V remains in the measurement mode. Upon completion of the
exposure(s) the operator may press the DONE soft-key to proceed to the next calibration screen or press
the ABORT soft-key to terminate the calibration process. Calibration factors are calculated based on a
normalized sensitivity of 1.000 nC/cGy. If the calibration process is interrupted by a machine malfunction
it is necessary to re-start the calibration process from the beginning.
Calibrate Screen
# 14
1 102.0
100.3 cGy
2
102.1
3
102.3
4
5
GROUP CHANNEL
CGY
ACTUAL
EXPOSURE
The result of each channel is displayed in cGy. Press the ACTUAL EXPOSURE soft-key to select the first
digit of the exposure. Repressing the ACTUAL EXPOSURE soft-key will move the cursor to the next digit