4.4.2.2 RSD-20/X.21
CONTROL/INDICATION
If the “C/I to Sub-channel” jumper is in the “MAIN CHANNEL” state, the C/I to sub-channel
follows the main C/I (unless the sub-channel is disabled, then the C/I is OFF). If the “C/I to
sub-channel is in the ”ON" state, all of the sub-channels’ C/O are “ON” irrespective of the main
channel C/I.
RSD-20 OPERATOR'S MANUAL THEORY OF OPERATION AND APPLICATIONS
4.2