A1534

Overview

The CAEN Mod. A1534 is a single width (5 TE wide) board housing 6 HV floating channels equipped with CPE connectors. The channels feature independent returns, insulated up to 100 V between each other. The board is available with positive or negative polarity and is non-reversible. The output voltage range is 0÷8 kV (200 µA maximum output current) with 0.5 V monitor resolution.

CPE 3P HV coaxial connector Double width (5 TE wide), 6 channel for Mod. A1534

Consult our connectors reference page for technical information.

If the output voltage differs from the programmed value by more than 3% of voltage full scale range, the channel is signalled to be either in OVERVOLTAGE or UNDERVOLTAGE condition. Moreover, for each channel, a voltage protection limit SVMAX can be fixed via software with 1 V resolution and the output voltage can not be programmed beyond this value. The HV RAMP-UP and RAMP-DOWN rates may be selected independently for each channel in the range 1÷500 V/s in 1 V/s steps.
The output current is monitored with 20 nA resolution; if a channel tries to draw a current larger than its programmed limit it is signalled to be in OVERCURRENT condition; the SY1527 system detects this state as a fault and reacts according to the setting of the TRIP parameter, namely:

1) TRIP = infinite ( = 1000 s)

When the set output current value is reached the channel behaves like a constant current generator.

2) TRIP = finite (< 1000 s)

The output current keeps the set value only for programmed time interval and then is switched off.

The TRIP time (i.e. the maximum time an OVERCURRENT condition is allowed to last) can be programmed in 0.1 s steps. The maximum output voltage (VMAX Hardware) can be fixed, through a potentiometer located on the front panel, at the same common value for all the board channels and this value can be read out via software. The boards host also a temperature sensor located on the PCB near the LV channels: the temperature values measured by this sensor are used to signal Over Temperature condition on the SY1527. The boards are provided with an “EN” input that disables the channels when it is not terminated.