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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!munnari.oz.au!newsroom.utas.edu.au!tasman.cc.utas.edu.au!sellings
- From: sellings@tasman.cc.utas.edu.au (Simon Peter Ellingsen)
- Subject: Controlling R&S freq Synth from GP-IB board
- Message-ID: <sellings.715522512@tasman>
- Summary: Problems controlling a Rohde & Schwarz SMX from GP-IB board on 386
- Keywords: GP-IB board, IEC-488
- Sender: news@newsroom.utas.edu.au
- Organization: University of Tasmania, Australia.
- Date: Thu, 3 Sep 1992 12:15:12 GMT
- Lines: 36
-
-
- I have a Rohde and Schwarz SMX frequency synthesiser which I am trying to
- control via a GP-IB board connected to an Olivetti 380c, 386 clone.
-
- I have had some success, in that I can switch the frequency synthesiser
- to remote via the GP-IB board. This happens when ever I try and send
- any command, even the switch into local command. I cannot switch the
- synthesiser into local when it is in remote mode. I have also found that
- when I send a command string to the synthesiser, (using outputa), it has
- the effect of resetting the synthesiser. The synthesiser also displays a
- syntax error.
-
- I am aiming to control the device from some real mode assembly code.
- I have tried writing test programs in both real mode assembly code and
- basic (the GP-IB manual gives all its examples in basic). The test
- programs in both cases have similar effects, showing that something
- is working, but not completely. The assembly code in the GP-IB rom
- require the addresses of the arguments passed on the stack, I have
- stepped through several of the GP-IB routines and I appear to be getting the
- required information to the GP-IB routines.
-
- I have looked closely at the Rohde and Schwarz manual, which is supposed to
- connect directly into the IEC-488 standard bus provided by the GP-IB board.
- In this manual it also mentions that Rohde and Schwarz have there own
- IEC-488 standard controllers and gives more example code (in bloody basic
- again!), which looks nothing like the code in the GP-IB manual.
-
- If anyone has had experience connectting a GP-IB board to a Rohde and
- Schwarz frequency synthesiser, I would appreciate any advice. Thanks in
- advance.
-
- Simon Ellingsen
- Physics Department
- University of Tasmania
-
- ellingsen@physvax.phys.utas.edu.au
-