CAEN
Electronic Instrumentation
UM2679 – A1536 AG536 Family Power Supply Boards
12
connection of the shield, of the return and of AGND (Earth). The best configuration must be determined by the user
upon application, the optimal connection depends on many characteristics of the related experiment.
The following diagrams show four examples of configuration:
HV Generator
Load
PMT
0
HV Channel 0
RETURN
Load
PMT
31
HV Channel 31
EARTH of
DETECTOR
Cable SHIELD
Circuit Protected
SHIELD
Circuit Protected
RETURN
HV CABLE
AGND
2
1
4
3
6
5
FRONT PANEL
JUMPERS
CLOSED LOOP EARTH CONFIGURATION
HV Generator
Load
PMT
0
HV Channel 0
RETURN
Load
PMT
31
HV Channel 31
EARTH of
DETECTOR
Cable SHIELD
Circuit Protected
SHIELD
Circuit Protected
RETURN
HV CABLE
AGND
2
1
4
3
6
5
FRONT PANEL
JUMPERS
CLOSED LOOP EARTH CONFIGURATION WITH
PROTECTION STAGE ON LOAD GND
HV Generator
Load
PMT
0
HV Channel 0
RETURN
Load
PMT
31
HV Channel 31
EARTH of
DETECTOR
Cable SHIELD
Circuit Protected
SHIELD
Circuit Protected
RETURN
HV CABLE
AGND
2
1
4
3
6
5
FRONT PANEL
JUMPERS
SEMI OPEN LOOP EARTH CONFIGURATION
HV Generator
Load
PMT
0
HV Channel 0
RETURN
Load
PMT
31
HV Channel 31
EARTH of
DETECTOR
Cable SHIELD
Circuit Protected
SHIELD
Circuit Protected
RETURN
HV CABLE
AGND
2
1
4
3
6
5
FRONT PANEL
JUMPERS
OPEN LOOP EARTH CONFIGURATION
Fig. 3 – Earth configuration connection examples