GBS Elektronik MCA166-USB - Manual (Page 67)

MCA Detector Power Commands:
Command name CMD_SET_PREAMPLIFIER_POWER
Description
The command sets the preamplifier power(pp).
0X80
-24V on
0X40 +24V on
0X20 -12V on
0X10 +12V on
0XF0 all on
0X00 all off
Command syntax
Format integer integer integer long integer
Parameter preamble command pp 0 end flag
Byte String (HEX) A5 5A 4E 00 pp 00 00 00 00 00 B9 9B
Used setup value None
Affected setup value preamplifier_power
MCA state STATE_READY
Command name CMD_SET_BIAS
Description
The command sets the detector high voltage 42 and controls the HV-inhibit-input.
hv: 0 ... 3000
i = 0 Inhibit off
i = 1 ”Canberra- or DFG-mode”, HV shut down if inhibit input < 0.5V
i =-1 ”Ortec-mode”, HV shut down if inhibit input = +5V
Command syntax
Format integer integer integer long integer
Parameter preamble command hv I end flag
Byte String (HEX) A5 5A 4F 00 hv
l
hv
h
i
l
i
h
00 00 B9 9B
Used setup value None
Affected setup value detector_bias, stab_state
MCA state STATE_READY
42 The high voltages will ramp up or down by the MCA166-USB.
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