MCA166-USB
MCA Measurement Setup Commands:
Command name
CMD_SET_ADC_RES_DISCR
Description The command set the ADC resolution(res: 128, 256 … 4096), the LLD(Low level discriminator) and
the ULD(Upper level discriminator) to the values of its three parameter.
The command will be ignored and responded with a error messages, if one ore more parameter are
invalid or a measurement is still running.
Command syntax
Format integer integer integer long integer
Parameter preamble command res LLD, ULD end flag
Byte String (HEX) A5 5A 46 00 res
l
res
h
LLD
l
LLD
h
ULD
l
ULD
h
B9 9B
Used setup value None
Affected setup value channels, lld, uld, stab_state
MCA state STATE_READY
Command name
CMD_SET_PRESETS
Description The command sets the choice(pre)
PRESET_NONE = 0
PRESET_REAL = 1
PRESET_LIVE = 2
PRESET_INT = 3
PRESET_AREA = 4
and value(val) of the preset. The parameter val must be lower then 65536 for PRESET_REAL and
PRESET_LIVE! If a measurement is running, only val can be changed.
Command syntax
Format integer integer integer long integer
Parameter preamble command pre val end flag
Byte String (HEX) A5 5A 48 00 pre
l
pre
h
val
l
... ... val
h
B9 9B
Used setup value None
Affected setup value presets, preset_value
MCA state STATE_READY
Command name
CMD_SET_ROI
Description The command sets the begin and end of the ROI for the preset integral and area.(LLD <= begin <
end and LLD < end <= ULD)
Command syntax
Format integer integer integer long integer
Parameter preamble command beg end end flag
Byte String (HEX) A5 5A 49 00 beg
l
beg
h
end
l
end
h
00 00 B9 9B
Used setup value LLD, ULD
Affected setup value roi_begin, roi_end
MCA state STATE_READY
60
