4 one contr ol keyboard per line, 5 more than two devices on the same line – EverFocus EKR-KB1 Benutzerhandbuch

Seite 15

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Page 13

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3.4 One contr ol keyboard per line

Connection is performed by means of one standard connection cable, which is described in the previous
paragraph.

3.5 More than two devices on the same line

The presence of more than one keyboard on the same communication line requires the use of Rjjack boxes, to
be connected in the correct way. As specified in § 3.2 RS485 and system types, page 11, identify the two
devices which represent the line ends and correctly terminate them (to terminate the EKR-KB1 keyboard, see §
2.5 - Dip switch, page 10
).
Particular attention must be paid for the length of the stubs.

Transmitters (keyboards)

Receivers

(video matrixes, telemetry)

White

RS485A

Blue

Yellow

RS485B

Black

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