CAEN
Electronic Instrumentation
DT55xxE Desktop HV Power Supply
7
Channel control section
Fig. 6: Channel control panel and Kill scheme
NAME:
TYPE:
FUNCTION:
KILL
PUSH BUTTON
Channel KILL; channel is turned off at the fastest available rate
KILL
RED LED
Signals Channel KILL
REMOTE KILL
AMP 280371-2
leave contact open: KILL
voltage level (0÷1V, ~5mA current) between pin 2 and 3: KILL
short circuit pin 1 with pin 2, and pin 3 with pin 4: ENABLED
voltage level (4÷6V, ~5mA current) between pin 2 and pin 3: ENABLED
HV Status control section
ALARM
INTERLOCK
Fig. 7: HV Status control panel
NAME:
TYPE:
SIGNAL:
FUNCTION:
ALARM
RED LED/ AMP 280371-2.
Out
Alarm status signalled (active LOW)
INTERLOCK
RED LED/ AMP 280371-2
In
Interlock signal (channels hardware disabled)
Alarm signal
As an Alarm condition is detected (see p.) pins 2 and 3 (- and +) are closed; the contact can be used to
switch an external device supplied by an external source, otherwise the VB and GND references can be
used to provide a TTL compatible level on pin 2 and 3.
In the first case (externally supplied device) the maximum allowed ratings are:
•
Maximum voltage b and -: 12V
•
Maximum sink current and -: 100mA
In the latter case, to produce a TTL compatible Alarm Out, pin 3 (+) must be connected with pin 4 (VB) and
pin 1 (GND) with pin 2 (-); see the diagram below:
Fig. 8: ALARM TTL configured
