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Subject: GPIB: To FLNK or Not to FLNK
From: Mathew Rippa <m.rippa@jach.hawaii.edu>
To: tech-talk@aps.anl.gov
Date: Mon, 12 Feb 2001 17:02:50 -1000
Hello.
I seem to have a two-fold problem:

Fold 1:
I'm using a sequence record to process 10 (sequential) calls to GPIB hardware.
Just 10 Analog Input records. 
Because the call to hardware LNK1 takes time (t >0) to complete, LNK2 will
start *before* LNK1 is complete. Since this is unacceptable in my design,
I have to induce a delay between LNK's in the sequence record. For example, I
have a 3 second delay between each call to an analog Input. The sequence record
will finish all 10 LNK's in 30 seconds.

You might ask, "Why is he using a sequence record when he could just FLNK the
harware calls in a serial fashion and do away with the sequence record, and
ultimately the need for a delay?".

Fold 2:
I want the functionality to turn on or off LNK's. I believe this could
be implemented with the SELM = MASK field in the sequence record.


Any hints on how to implement this?
Much obliged.

-Mathew Rippa
	~Joint Astronomy Centre


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