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I cannot remotely control my 1856D or 1823A frequency counter in hyperterminal

Last Updated: Aug 21, 2014 08:28AM PDT

Applicable Models:  1856D, 1823A
Operating System:  Windows XP

Question:  
How do I communicate with a 1856D/1823A frequency counter with hyperterminal?  I cannot get the instrument to respond.


Answer:  In order to communicate with the frequency counter, the DTR line must be enabled/asserted and RTS line must be disabled/not asserted.  Hyperterminal does not have configurable options to control the state of these lines, thus it cannot be used to communicate with the counter.  There are other alternative programs such as RealTerm, which gives you the necessary configurable options to communicate remotely.

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