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Extracting recorded data for fringe test
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on pv-mark5c-1
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- make sure that drs is running
- run: drs_client
> scan_check?
	
	will output something like:
	!scan_check ? 0 : 1 : scan1 : mark5b : 0 : 2013078101247 : 3.78890625(s) : 2048 : 0 ;

	select the scan that you are interested and select it by issuing:

> scan_set=1

	then

> scan_set?
	will output something like:
	!scan_set? 0 : EXP_ST_scan1 : 0 : 971511936 ;

	last two numbers are the start and stop bytes of the scan

calculate desired start and stop bytes:

	!scan_set? 0 : EXP_ST_scan1 : 1971511936 : 9971511936 ;

	say you want to extract +10sec of data starting at +5s from the scan start:

	10s * 2x10⁹ bit/s / 8bit = 2500000000 bytes
	5s * 2x10⁹ bit/s / 8bit = 1250000000 bytes

	=>  start byte  = startbyte_of_scan + start_offset
			= 1971511936 + 2500000000
			= 4471511936
	
	    stop byte	= start byte + duration
			= 4471511936 + 1250000000
			= 5721511936

> disk2file=filename:4471511936:5721511936

	will write filename in /home/oper/

when copying has finished end drs_client (^C)
			  
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on pv-mark5b-1
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- make sure dimino is running
- run tstdimino

> scan_check?

	!scan_check? 0 : 1 : test_pl_no0001 : - : 366 : 2013y074d10h00m01.0000s : 419.0s : 2048.000 : 0 ; 

> scan_set=test_pl_no0001:+10s:+5s

	will select +5s of data from scan test_pl_no0001 starting +10s from scan start
	
> scan_check?

	!scan_check? 0 : 1 : test_pl_no0001 : - : 366 : 2013y074d10h00m06.0000s : 10.0s ? : 2048.000 : 0 : E ;

	check that start and duration are what you wanted to set

> disk2file=

	will write file in /home/oper/

when copying has finished end tstdimino (^C)