RTS SAP612 Manuel d'utilisateur télécharger pdf (Page 10)

Installation and Operation

System Capacity

To determine power supply loading, add together all of the user stations that will be powered from a particular buss (less

stations which are self-powered).

NOTE: The SAP612 distributes DC power, but uses no power itself. Refer to the power supply manual for power supply

capacity information.

Intercom Channels

Connect intercom channels to the OUTPUTS 1-12 jacks on the rear panel. Each connector accommodates a pair of TW

channels wired in the standard TW 2-wire configuration as follows:

Pin 1 Common (low side of line)

Pin 2 Channel 1

Pin 3 Channel 2

Shielded cable is recommended for user stations interconnections. Connect shields to circuit common, but do not tie shields to

chassis, earth or connector shell ground.

Program Sources

Program Input 1 (PGM1) is assigned to buss 5, program 2 is assigned to buss 6. The program inputs are balanced and isolated.

Connect program sources using 1/4-inch stereo phone plugs wired as follows:

Tip Program High

Ring Program Low

Sleeve Common

FIGURE 3. Connecting a Non-TW Power Source

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17

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RTS SAP612 Manuel d'utilisateur Page 10