Pelco Kbd300 User Manual download pdf (Page 7)

Pelco Manual C527M (11/97) 5

3.1 WALL JACK WIRING

1. Determine the location of all keyboards.

2. Run wall jack interconnect cable (user supplied) from the SCU to the closest

keyboard location. Then to the next nearest location, and the next, etc.

Wall jacks must be within 6 feet (1.8 m) of the nearest suitable electrical outlet.

Do not mount the wall jack at this time.

3. Make cable connections between wall jacks according to Figure 2. All connec-

tions between keyboard wall jacks are one-to-one. Notice that Pin 5 is con-

nected to Pin 4 between SCU wall jack and the first keyboard wall jack.

4. At each keyboard wall jack, wire a transformer to pins 5 and 6. Polarity is

unimportant.

5. Secure the wall jack to a suitable surface.

6. Plug keyboard transformers into a suitable 115 VAC outlet.

7. Plug in all Data Cables according to Figure 3.

IMPORTANT:

Wall jacks must be

wired in a daisy-chain configura-

tion.

Figure 2. Wall Jack Wiring Schematic

SCU WALL

JACK

FIRST KBD

WALL JACK

SECOND KBD

WALL JACK*

THIRD KBD

WALL JACK*

12 VAC

WALL

TRANSFORMER

12 VAC

WALL

TRANSFORMER

12 VAC

WALL

TRANSFORMER

WALL JACK

PIN ASSIGNMENTS

* AS NEEDED

USER

SUPPLIED

CABLE

1 2 3 4 5 6 7 8 9 10 11 12

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Pelco Kbd300 User Manual Page 7