CAEN
Electronic Instrumentation
A1539, AG539, A154X, AG54X Power Supply Boards
8
Displays
HV ON LED:
Function:
lights up as at least one channel is on
Type:
red LEDs for positive polarity
;
yellow green LEDs for negative polarity.
INTERLOCK LED:
Function:
lights up as the board is in INTERLOCK (channel are disabled).
Type:
red LED
Other components
VMAX trimmer:
Function:
it allows to adjust the hardware maximum voltage
VMAX common to all the channels. Its value can be read out
via software.
Shield CFG jumpers (24, 32 ch floating):
Function:
see table below
Table 2 – Configuration jumpers
1-2
Agnd -shield
Connects Agnd (Earth) to HV cable shield
3-4
Agnd - Return
Connects Agnd (Earth) to HV channels return
5-6
Shield - Return
Connects Shield to HV channels return
JA (A15xxD)
:
Jumper connector; short circuit: connect FAGND (Earth) and AGND (CH rtn). See below for
JA location.
Fig. 3 – JA jumper location
