Quatech RS-422/485 Network Card User Manual


 
CIRCUIT TM - TEST MODE (TM)
CONNECTOR NOTATION: TEST MODE
DIRECTION: From DCE
This signal indicates to the DTE that the DCE is in a test condition.
The DCE generates this signal when it has received a local
loopback or remote loopback signal from the DTE.
Quatech Inc., MPA-200/300 Manual 36