2- Wire Audio Connections; Rts Tw Audio Connections; Audiocom Audio Connection - RTS SSA-424 User Instructions

2.4 2- A
WIRE UDIO
2.4.1 RTS TW A
UDIO
1 Use standard TW intercom cables. Note, stan-
dard TW system cables can carry either one or
two channels, while each hybrid in the SSA-424
can only interface one TW channel to one 4-wire
channel (which channel is determined by the
front panel 2W CHAN SEL switch). If your TW
system cable is only carrying one channel, or if
you only need to connect one of two channels,
connect directly to J1A (System A) or J1B
(System B). If you TW system cable is carrying
two channels, and you want to connect both, use
a TW-5W or similar device as shown in Fig. 3.
The SSA-424 features internal DC isolation.
You can therefore connect the SSA-424 to
powered TW cables, and it will not draw any
power from the TW system.
2 On the SSA-424 front panel: For each hybrid
(System A or System B) set the 2W CHAN SEL
switch to the appropriate position. To interface to
TW channel 1, select position 1; for TW channel
2, select position 2.
If the System A or System B hybrid will not
be used, set its 2W CHAN SEL switch to
either OFF position.
TW CABLE PIN-OUT
PIN 1 COMMON
PIN 2 CH 1
PIN 3 CH 2
TW-5W
Telex Communications, Inc., Made in U.S.A.
AUX
SSA-424
J4B
J3B
J2B
4 WIRE SYSTEM
Figure 3. Using a TW-5W to connect two TW channels to the
SSA-424.
C
ONNECTIONS
C
ONNECTIONS
FROM RTS TW
INTERCOM SYSTEM
PUSH
AUX
J5 POWER
+5V 3A
+15V 1.6A
-15V 0.3A
J4A
+5V RTN
+15V -15V
J1B J1A
J3A RTN
J2A
2 WIRE SYSTEM
4 WIRE SYSTEM
2.4.2 A A
UDIOCOM UDIO
1 You can directly connect standard Audiocom 1-
channel cables. Connect one Audiocom channel
to the J1A connector on the back of the SSA-424
(System A). Connect a second Audiocom
channelto the J1B connector (System B). If your
Audiocom system uses 2-channel cables, use a
JB-2 Junction Box to split the channels (Figure
4).
The SSA-424 features internal DC isolation.
You cn therefore connect the SSA-424 to
powered Audiocom cables, and it will not
draw any power from the Audiocom system.
2 On the SSA-424 front panel, set the 2W CHAN
SEL switches for System A and System B to the
BAL position.
If the System A or System B hybrid will not
be used, set its 2W CHAN SEL switch to
either OFF position.
CH 1 AND 2
FROM AUDIOCOM
INTERCOM SYSTEM
1&2 LINES
CH 2
AUX
J4B
J3B J2B
4 WIRE SYSTEM
Figure 4. Using a JB-2 Junction Box to split a 2-channel
Audiocom cable into two 1-channel cables.
C
ONNECTION
JB-2
2 LINE 1 LINE
CH 1
SSA-424
Telex Communications, Inc., Made in U.S.A.
AUX
J5 POWER
+5V 3A
+15V 1.6A
-15V 0.3A
J4A
+5V RTN
+15V -15V
J1B J1A
J2A J3A RTN
2 WIRE SYSTEM
4 WIRE SYSTEM
SSA-424 U M
SER
9
ANUAL