ORTEC Easy-MCS, Hardware User Manual

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931054C / 1213 APPENDIX D. COMMANDS AND RESPONSES
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SET_LLSCA voltage
Sets lower-level threshold on the SCA to the specified voltage. Voltage has a maximum value
of +10 and a minimum value of 0. Legal values b10 and 0 occur every 0.002442
volts. Use VERIFY_LLSCA to find the closest legal value to the desired voltage and then set
the value with SET_LLSCA. If an invalid value is specified, the value is rounded to the
closest legal value and a warning message is returned. See also SHOW_LLSCA. The LLSCA
voltage should not be set above the ULSCA voltage for proper operation of the SCA.
SET_PASS value
Sets the pass count counter to the specified value. This command is invalid during acquisition.
SET_PASS_LENGTH channels
Sets the pass length to the specified number of channels. The pass length must be >3 and
#
65536. This command is invalid during acquisition.
SET_PASS_PRESET value
Sets the pass count preset to the specified value. This command is invalid during acquisition.
SET_RAMP start,[mid,]end
Programs the shape of the ramp signal that comes from the ramp option. “start”, “mid” and
“end” are in units of volts. Legal values are between 0 and 10 with a step size of 0.6104 mV.
Legal values can be found by using the VERIFY_RAMP command. If an invalid value is
specified, it is rounded off to the closest legal value. “start” specifies the output voltage of the
ramp during the first time bin, “mid” specifies the output voltage at the middle channel of the
ramp, and “end” specifies the ramp voltage during the last channel of the ramp. If the pass
length is even, “mid” specifies the voltage at the lower channel number closest to the middle
of the pass. A straight line is drawn between the specified values to determine the settings
between the start, mid, and end channels. If the pass length is even and the slope of the ramp
changes sign at the middle channel, then the “mid” value occurs at both channels closest to the
middle of the pass. Ramp step size will vary from channel to channel if the difference between
start and mid is not a multiple of the number of channels in a half pass. A similar constraint
holds between mid and end. If the “mid” parameter is omitted, then a single line is drawn from
the first channel to the last channel in the pass. See also SHOW_RAMP and VERIFY_RAMP.
The SET_RAMP command can be successfully executed independent of the pass length.
SET_ULSCA voltage
Sets upper-level threshold on the SCA to the specified voltage. Voltage has a maximum value
of +10 and a minimum value of 0. Legal values b10 and 0 occur every 0.002442 V.
Use VERIFY_ULSCA to find the closest legal value to the desired voltage and then set the
value with SET_ULSCA. If an invalid value is specified, the value is rounded to the closest