Fluke Biomedical 07-451 - Manual (Page 6)

Nuclear Associates 07-451
Operators Manual
1-2
Figure 1-1
1.3 Operation
1. Using a suitable oscilloscope (memory or standard type, 10 mV/div vertical deflection, and with a
sufficient sweep generator and camera adaptor), connect the detector to the input of the scope with
a BNC-BNC cable.
2. Place the 07-451 Detector as close as possible to the x-ray tube target or teletherapy head, with the
middle of the “product name” label toward the source of radiation.
3. Set the scope controls so that an incoming signal will trigger the sweep (vertical deflection typically
25 mV/div, sweep optional).
4. Expose the detector (for example, 80 kVp, 100 mA, 0.1 sec) and record the displayed waveform
with the Polaroid camera system. If a memory scope is used, record the waveform in the storage
mode.
5. The film or stored record indicates the time the source of radiation was “on” and the radiation output
vs. time (single phase, 3 phase, continuous potential, etc). This allows the user to check the
machine’s timer and the output quality of the radiation source by interpreting the information
rendered.
Make sure that the oscilloscope time base is
calibrated. An uncalibrated time base will cause
inaccurate timer measurements.
NOTE