ORTEC Easy-MCS, Hardware User Manual

Page: 84 / 132

Easy-MCS
™
Multichannel Scaler and MCS-32 (A73-B32) Software 931054C / 1213
74
SET_PRESET_PASS 1000
CLEAR
Note that only the Dwell Time, Pass Length, and Pass Preset were set. We will assume that the
other parameters (Disc Voltage, Acq Mode, etc.) were set before the JOB was started. Now start
the acquisition and wait for completion of the pass preset.
START
WAIT
During this time, the display-manipulation keys and mouse are active so the spectrum can be
studied while data collection takes place.
Now move the spectrum from the MCS to the buffer, and select the buffer for the computational
step.
FILL_BUFFER
SET_MCS 0
In the next step, the peak of interest is being marked by reading in an .ROI file. This .ROI file
has been previously defined by looking at the spectrum and marking the peak (or the region
around the peak). These ROI data are saved on the disk under the name
PEAK.ROI
. This
.JOB
file will work on different peaks just by changing the ROI file.
RECALL_ROI “PEAK.ROI”
The peak areas of the marked peak or peaks is printed on the printer by this command.
REPORT “PRN”
This gives a list of the peak areas for the marked peak. If the library ( LIB.MCS ) has a peak near
this peak, the peak identity will also be printed.
The set of instructions, as written so far, will only collect data and report once. There are two
ways to make the process repeat itself for a series of samples. The first and hardest is to write
one set of the above instructions for every sample in the series. A much more efficient way is to
use the LOOP command. To use this, put LOOP before CLEAR and END_LOOP after
REPORT. The whole
.JOB file now looks like this:
SET_MCS 1
SET_DWELL_TIME 1e-6
SET_PASS_LENGTH 7500