RTS SSA-424A Audiocom Audio Connection, Clear-Com Audio Connection, Other 2-wire Audio Connection

2-Wire Audio Connections

NOTE: The SSA-424A features internal DC isolation. You can therefore connect to the SSA-424A to powered TW cables, and it will not draw any power from the TW system.

2.On the SSA-424A front panel: For System A and 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.

NOTE: If the System A or System B will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector.

TW CABLE PIN-OUT
PIN 1 COMMON	FROM RTS TW
PIN 2 CH 1
	INTERCOM SYSTEM
PIN 3 CH 2

PUSH

TW-5W

	AUX		Telex Communications, Inc., Made in U.S.A.			AUX	J5 POWER
							+5V 3A
SSA-424A							+15V	1.6A
							-15V 0.3A
	J4B					+5V		RTN
						J4A
			J1B	J1A		+15V		-15V
	J3B	J2B		2 WIRE SYSTEM	J2A	J3A	RTN
	4 WIRE SYSTEM					4 WIRE SYSTEM

FIGURE 3. Using a TW-5W to connect to two TW channels to the SSA-424A

Audiocom Audio Connection

1.You can directly connect standard Audio 1-channel cables. Connect one Audiocom channel to the J1A connector on the back of the SSA-424A (System A). Connect a second Audiocom channel to 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)

NOTE: The SSA-424A features internal DC isolation. You can therefore connect the SSA-424A to powered Audiocom cables, and it will not draw any power from the Audiocom system.

2.On the SSA-424A front panel, set the 2W CHAN SEL switches for System A or System B to the BAL position.

NOTE: If System A or System B hybrid will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector.

CH 1 AND 2

FROM AUDIOCOM

INTERCOM SYSTEM

			JB-2
1&2 LINES	2 LINE	1 LINE

CH 2 CH 1

SSA-424

AUX		Telex Communications, Inc., Made in U.S.A.			AUX	J5 POWER
						+5V 3A
						+15V	1.6A
						-15V 0.3A
J4B					J4A
					+5V		RTN
		J1B	J1A		+15V		-15V
J3B	J2B		2 WIRE SYSTEM	J2A	J3A	RTN
4 WIRE SYSTEM					4 WIRE SYSTEM

FIGURE 4. Using a JB-2 Junction Box to split a 2-channel Audiocom cable into two 1-channel cables.

Clear-Com Audio Connection

1.Use standard Clear-Com 3-pin cables. Connect one Clear-Com party line to the J1A connector on the back of the SSA-424A (System A). Connect a separate Clear- Com party line to the J1B connector (System B).

NOTE: The SSA-424A features internal DC isolation. You can therefore connect the SSA-424A to powered Clear-Com cables, and it will not draw any power from the Clear-Com system.

2.On the SSA-424A front panel, set the System A and System B 2W CHAN SEL switches to position 2.

NOTE: If the System A or System B hybrid will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector.

Other 2-wire Audio Connection

1.Use the J1A connector on the back of the SSA-424A to connect one 2-wire line to the System A hybrid. Use the J1B connector to connect a second 2-wire line to the System B hybrid. The pin configuration for the J1A and J1B connectors depend on whether you are connecting a

balanced or unbalanced 2-wire line, as follows:

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