Command name
CMD_SET_MCS_INPUT
Description
The command sets the input for the Multi-Channel Scaler.
ip = 0
external TTL signals
ip = 1
internal count rate signal
ip = 2
counts only pulses with amplitude between LLD and ULD threshold
Command syntax
Format
integer
integer
integer
long
integer
Parameter
preamble
command
ip
0
end flag
Byte String (HEX)
A5
5A
55
00
ip
00
00
00
00
00
B9
9B
Used setup value
None
Affected setup value
mca_input_mcs
MCA state
STATE_READY
Command name
CMD_SET_THRESHOLD
Description
This command set the analogue threshold value (thr: 2 …60).
Command syntax
Format
integer
integer
integer
long
integer
Parameter
preamble
command
thr
0
end flag
Byte String (HEX)
A5
5A
47
00
thr
00
00
00
00
00
B9
9B
Used setup value
None
Affected setup value
Threshold
MCA state
STATE_READY
Command name
CMD_SET_SHAPING_TIME
Description
The command sets the amplifier shaping time(dtc).
dtc = 1 shaping time low (1 µsec)
dtc = 3 shaping time high (2 or 3 µsec)
41
Command syntax
Format
integer
integer
integer
long
integer
Parameter
preamble
command
dtc
0
end flag
Byte String (HEX)
A5
5A
52
00
dtc
00
00
00
00
00
B9
9B
Used setup value
None
Affected setup value
Dtc
MCA state
STATE_READY
41 The values may be different for some MCA166-USB configurations.
63
