GW Instek GDS-800 Series User Manual - Manual (Page 71)

GDS-800 Series Digital Storage Oscilloscope Operation Manual
71
The RS232 connection testing
If you want to test whether the RS232 connection is working or not, you can send a
command from computer. For instance, using a terminal program send the query
command
*idn?
should return the Manufacturer, model number, serial number and firmware version
in the following format:
GW,GDS-820S,D130309,V.2.03
If you do not receive a proper response from the oscilloscope, please check if the
power is on, the RS232 configurations are the same on both sides, and all cable
connections are active.