SPCI communication problem with GSP-700 spectrum analyzer MTTTY terminal

Thread Starter

yef smith

Joined Aug 2, 2020
Hello ,I am try to communicate with INSTEK GSP-730 spectrum analizer which link photo shown bellow.
as you can see in the photo bellow i have sucseeded connecting to the device with all communivation parameters COM3 port ,baude rate 115200 etc..

I am trying to send the idn? command as was specified in the manual page 80.(to get basic responce from the device)
but the only way i see is to send it as a file.
A text file with a single word idn? was created but when i press send the file nothing happens.
Is the some alternative software i could use to communicate with the device?
where did i go wrong?