Pub. 42004-561A
400-005 and 400-006 RigCom Stations
Page 11 of 16
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-561A.docx
04/22
Common Line System
All stations are on a common
audio path and are normally in
listen mode in the common line
configuration. Activation of a
station’s push-to-talk toggle switch
supplies its audio signal to the
common audio path. All other
units receive the audio signal and
broadcast the announcement over
their speakers. Hold the
push-to-
talk
switch down while talking.
Release the switch to deactivate
the microphone and return the unit
to listen mode.
Master/Slave System
A master station controls the talk-
listen function of the slave units
through external control wiring in
the master/slave configuration.
Slave stations are in talk mode
allowing the master station to
monitor the slave’s audio when the
master station is in listen mode
(
push-to-talk not active
). Activate
the master’s push-to-talk toggle
switch to place the slaves in listen
mode, allowing the master to
transmit audio to the slave stations.
The push-to-talk switch is not
functional on slave stations,
making operation hands-free.
Figure 8. Common Talk Wiring Detail
Figure 9. Master/Slave Wiring Detail
