Dear All
i use Agilent VEE 6.2, VNA 8510C and the Agilent 82357A USB/GPIB inteface for windows.
My problem is the time acquisition of the data.
I make a program where i acquire the S21 parameter with the VNA set in Continuos Wave and i put it in an array (1 Dimension).
In particular i acquire the S21 parameter in a cycle (Until Break) and to take it very fast i acquire the marker displaying only the S21 parameter on VNA 8510C.
The time acquisition of the single marker is very slow for my application.
Using a timer in the cycle the time to read the data is about 1,5 sec and it is not regular (it changes from 1,4 to 1,8 sec).
So what can i do to acquire the data in a faster way?
Why the time is not regular?
Thank you in advance for your helpfulness
i use Agilent VEE 6.2, VNA 8510C and the Agilent 82357A USB/GPIB inteface for windows.
My problem is the time acquisition of the data.
I make a program where i acquire the S21 parameter with the VNA set in Continuos Wave and i put it in an array (1 Dimension).
In particular i acquire the S21 parameter in a cycle (Until Break) and to take it very fast i acquire the marker displaying only the S21 parameter on VNA 8510C.
The time acquisition of the single marker is very slow for my application.
Using a timer in the cycle the time to read the data is about 1,5 sec and it is not regular (it changes from 1,4 to 1,8 sec).
So what can i do to acquire the data in a faster way?
Why the time is not regular?
Thank you in advance for your helpfulness
Somewhere in that documentation should be some tips to speed up communications. One example would be "format:trace:data integer,32" and then read your 1-D array as int32's. This will help that 82357A (which is obsolete and replaced by the 82357B twice as fast). Also, play with "display:enable off" and "display:enable on". Turning the 8510C display off will put less pressure on the device.
I would predict that your speed bottleneck is in the 8510C, so you'll want to reduce the processing that it has to do. The S21 of the wave is probably the simplest calculation, but if you can do anything less taxing to acquire what you want (i don't know what you want), that would be good.
Long story short: you're using an obsolete network analyzer with a gpib developed in the 60's. I'm not sure what speeds you want, but you may consider upgrading.