Output Enable - Caen A1539 Quick Start Manual

If the POWER ON option is enabled, as the module is turned ON, the channel is restored to the same
condition it was before the POWER OFF or RESET; if this option is disabled, at POWER ON or after a
RESET, the channel is kept OFF independently from its previous condition.
The following messages may be returned by the SYSTEM when monitoring the channel status:
OFF
RUP
RDWN
OVC
OVV
UNV
E-TRIPPED (channel OFF due to external TRIP line signal)3
I-TRIPPED (channel OFF due to internal OVERCURRENT condition)
EXT_DIS
Moreover it is possible to monitor board parameters, such as measured Temperature and HVMax, and
to check board status; the following messages may be returned by the POWER SUPPLY SYSTEM when
monitoring the board status:
UNDER_TEMP (board temperature < 5°C )
OVER_TEMP
N.B.: Ax539; Ax541 and Ax542H must be operated with SYx527 ventilation fan speed set to
"High"

Output Enable

In order to enable the HV output channels, on boards with DB25 connectors, it is necessary that pin INT
and /INT are short circuited (see External connections).
Then the enable procedure is completed in one of the following ways:

Boards with LEMO interlock connectors
2
UNV is also reported when Hvmax limit is reached, it is up to the User to verify that VMON value does not exceed HVMAX.
3
EXTTRIP and INTTRIP parameters are expressed in Hexadecimal format
11
(channel turned OFF)
(channel ramping up)
(channel ramping down)
(channel in OVERCURRENT condition)
(channel in OVERVOLTAGE condition)
(channel in UNDERVOLTAGE condition)2
(channel disabled by board INTERLOCK protection)
(board temperature > 65°C)

terminating the PASSIVE INTERLOCK (see External connections) connector on 50 Ohm.

supplying the SIGNAL INTERLOCK (see External connections) connector with a +5 V (3-
4mA) signal.
CAEN
Electronic Instrumentation
A1539, AG539, A154X, AG54X Power Supply Boards