Intercom Line-Channel Configurations (Ds1-Ds3, J6, J7, J19 & J20) - RTS MCE325 User Instructions

Figure 2.1
Intercom Line-Channel Configurations (DS1-DS3, J6, J7, J19 & J20)
The four channels of the MCE325 may be assigned to intercom lines in a variety of ways.
Channel assignment is determined by the settings of DIP switches DS1 through DS3 and jumpers
J6, J7, J19, and J20. There are six possible intercom line configurations. These are listed in Table
2.3 together with the proper DIP switch and jumper settings for each.
Table 2.1
Switch Number Switch Function
DS1
DS2
DS3
DS4
DS5
DS6
DS7
DS8
The terms "two-channel mode" and "four-channel mode" apply only to two-wire lines. In two-
NOTE
channel mode, each two-wire line uses two channel selector buttons: one for talk and one for
listen. In four-channel mode, each two-wire line uses one channel selector button for both talk and
listen.
The two-channel mode should be selected under only two circumstances:
When only one or two two-wire lines are connected to channels one and two only.
1
2-2
C S I - 2 0 0 U s e r I n s t r u c t i o n s
Top cover removal.
DIP switch functions and default settings.
four-wire CH A output not installed (off), four-wire CH A output installed
(on)
four-wire CH B output not installed (off), four-wire CH B output installed
(on)
two-channel mode (off)*, four-channel mode (on)
Front panel setup lock-out disabled (off), Front panel setup lock-out
enabled (on)
Listen and talk muted during ISO (off), Talk only muted during ISO (on) Off
Not used
Talk-off transmit disabled (off), Talk-off transmit enabled (on)
VOX disabled (off), VOX enabled (on)
Default Setting
Off
Off
Off
Off
Off
On
Off