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updating user documentation. another update required

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<LI><A NAME="tex2html116"
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<LI><A NAME="tex2html117"
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<H1><A NAME="SECTION00050000000000000000">
Usage</A>
</H1>
<P>
<H2><A NAME="SECTION00051000000000000000">
Mandatory setup</A>
</H2>
First, your detector should always be configured for each PC that you might want to use for controlling the detector.
To do that:
<PRE>
sls_detector_put config mydetector.config
</PRE>
Refer to sample configuration files to produce the appropriate one for your detector.
<P>
One can configure all the detector settings in a parameter file <TT>setup.det</TT>, which is loaded by doing:
<PRE>
sls_detector_put parameters setup.det
</PRE>
<P>
In the case of EIGER, the parameter file (<TT>setup.det</TT> needs to setup the proper bias voltage of the sensor, i.e. needs to contain the line <TT>vhighvoltage 150</TT>.
<P>
<H2><A NAME="SECTION00052000000000000000">
Standard acquisition</A>
</H2>
<P>
You will then need to setup the detector threshold and settings, the exposure time, the number of real time frames and eventually how many real time frames should be acquired:
<PRE>
sls_detector_put settings standard
sls_detector_put threshold 6000
sls_detector_put exptime 1.
sls_detector_put frames 10
</PRE>
In this case 10 consecutive 1s frames will be acquired.
<P>
You need to setup where the files will be written to
<PRE>
sls_detector_put outdir /scratch
sls_detector_put fname run
sls_detector_put index 0
</PRE>
this way your files will all be named /scratch/run_fj_i.dat where j goes between 0 and 9 and is relative to the frame number, i starts from 0 and is automatically incremented. The next acquisition it will be 1.
<P>
To acquire simply type
<PRE>
sls_detector_acquire
</PRE>
<P>
You can poll the detector status using
<PRE>
sls_detector_get status
</PRE>
<P>
<H2><A NAME="SECTION00053000000000000000">
Data processing</A>
</H2>
Flat field and rate corrections can be applied directly by simply selecting:
<PRE>
sls_detector_put flatield myflatfield.raw
sls_detector_put ratecorr -1
</PRE>
<P>
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<ADDRESS>
Thattil Dhanya
2017-08-22
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