Pyramid D100 User Manual page 22

PSI System Controls and Diagnostics
Figure 7. D100 window setup tab showing FPGA algorithm parameters GUI display options
The Bias Scale parameter should be set so that the high voltage supply output scales correctly for
the 0 to 2.048 output from the D100. The value is the output voltage per volt of demand. Check
that the program voltage to the HV supply appears at the appropriate pins (see section 12.1)
when the bias voltage is set.
CAUTION. Take care when connecting and using high voltage supplies. Do not attempt a
direct measurement of the high voltage unless you have the appropriate test equipment and
have received the appropriate training
If you have a suitable high voltage probe, you can check that your high voltage PSU output
responds correctly to the demand from the D100, before connecting up to the photomultiplier.
Clicking on the Device tab shows details of the communication channel, installed software and
serial number. On the right it exposes the application code upload utility. A new firmware code
file can be uploaded from the host PC at any time.
D100 User Manual D100_UM_081027 Page 22 of 46