7 Main Menu Device Setup LB 470 Level
56925BA2 Rev. 03, 11/2017
Default HV is preset by BERTHOLD. A subsequent change is not usually neces-
sary. The default value HV = 0 may only be set for testing purposes. An incorrect
setting may cause malfunction.
It is not recommended to use the "Manual" mode as a normal operating mode
for high-voltage control. "Manual" should only be used for service purposes.
Make HV settings
1. Click on the selection arrow (Fig. 72, item 1) in order to set the desired HV
mode (auto or manual).
AUTO: The optimum high-voltage supply of the photomultiplier is automati-
cally determined and set by the device.
MANUAL: The high voltage is maintained at a fixed, user-entered value (Fig.
72, item 2).
2. Click in the input field "HV Default" (Fig. 72, item 3) to open the input field.
3. Enter the desired starting value for the high-voltage regulation.
4. Confirm with the Enter key.
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