03-01-2021 04:24 PM
Hi everyone,
I am having difficulty communicating with a Yokogawa AQ6370C optical spectrum analyzer. I want to do this via a NI GPIB-USB-HS from the instrument to my laptop. I am able to find it on NI MAX, but I am unable to control my instrument. I have done a million things to try to troubleshoot this problem, with no luck.
This list includes:
1. Reinstalling NI-VISA and 488.2
2. Yes, all of my software drivers, etc are compatible (using the charts on the NI site)
3. Changing "timeout" in I/O settings to 30 seconds (pic 3) as instructed by the OSA's manual (pic of these instructions included just for fun- pic 6)
4. Checking if the instrument needs termination characters. The remote control manual does not even mention the phrase "termination characters," so I am assuming this is a no. Also, I tried them anyways just in case - no luck.
5. I set the I/O protocol to high speed since I have a new HP Precision laptop, and one NI FAQ said this could be an issue some how ??
6. When I first click on my instrument from the NI MAX list of connected devices, it states "The instrument did not respond to the *IDN? command. Refer to the instrument's programming manual to determine if this command is supported." (see pic 2), but the manual says this is a compatible command.
7. The device status says the device is working properly (pic 7).
8. The NI GPIB-USB-HS is connected to port 1, like it instructs in the manual for PC remote control.
No matter what I try, I keep getting this error (pic 1).
Any help is greatly appreciated as I've been working through this for 2 days now.
Thanks so much!!
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Solved! Go to Solution.
03-02-2021 03:46 AM
Hi
My first step would be to set gpib speed to 1 microsecond instead of high speed.
Not all instruments are high speed. And depending on distance and total number of instruments with several gpib cables I also would bring the speed down.
If things are working in low speed I would try higher speds only if needed.
03-02-2021 07:40 AM
Hi, thanks for the reply. Where would I set it to 1 microsecond?
I tried putting it in both "normal speed" and "high speed" under the I/O protocol in the I/O settings tab. I got the same error in both instances. Thanks!
03-02-2021 08:35 AM
This unit has two GPIB connectors on the back. Depending on how this is being used will determine which port is to be connected. According to the manual, GP-IP2 will NOT respond to SCPI commands/queries. See section 1.1 in the manual. Additionally, you will need to ensure that the 'LF' character is appended to each command/query.
03-02-2021 11:41 AM
03-02-2021 01:12 PM
Thank you so much!!! Setting it to 1 microsecond worked. Here is my new settings for those who have the same issue. I appreciate everyone's help!