Quantcast
Channel: Instrument Control (GPIB, Serial, VISA, IVI) topics
Viewing all articles
Browse latest Browse all 5566

Controlling Gpib-usb-HS-+ handshake manually

$
0
0

Hello, 

I am working on an old device that communicates in GPIB but with only one PC. 

my project is to replace this PC with a new equipment.

 

Right to the problem: 

I need a dll / library in C# to create a manual handshake where there is no need in a response when I am a CIC listener. 

 

The story:

So far we had not much success using GPIB-USB-HS+, until recently.

 

I have found that the Device communicates with special commands (nothing like "*IDN?", all in special Hex Bytes).

 if you send the correct sequence it will not answer you UNLESS!! you start a handshake first(even though you are the controller and  the device now a talker), like manually doing handshake.

I achieved a result by using NI Analyzer Handshake Switches(*attached picture*) to create this first HS when I am as a listener and CIC. 

 

I tried using TMS9914 and NAT7210 in TMS9914 mode but it can't find the device on the bus even though the NRFD is Low when it's connected to 9914.(*attached picture*) 

Would be very happy for your help, 

 


Viewing all articles
Browse latest Browse all 5566

Trending Articles



<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>