Hi,
I just happen to have a 3478A on my desk. I also have AR488 using the PCB designed by forum member artag.
First a few pictures of the assembled interface:
I have s/w version
AR488 GPIB controller, ver. 0.48.28, 01/07/2020
If I use Tera Term to communicate with the 3478A. My 3478A is set to HPIB address 24.
I send
++auto
++addr 24
if I send
++readThe
RMT indication comes on and stays on.
The
TLK flash briefly when the 3478A is transmitting data.
RMT can be turned off by pressing the LOCAL button on the DMM.
if I set it to local and I enter
++readThe
TLK flashes when transmitting, but the
RMT stays off.
If I send
H1(H1 configures the meter for DCV)
The
RMT comes on and stays on.
Does this help?
Jay_Diddy_B