RFL Communications 21 Sub-MUX Bedienungsanleitung PDF herunterladen (Seite 36)

Solutions for an evolving world.

Asynchronous Electrical

Interface’s/MUX

RS232

Protective Relay

MUX or

Channel

Bank

Protective Relay

Many forms

RS449 (37pin)

RS232 (9 Pin)

v.35

MUX or

Channel

Bank

• The MUX/CHBNK will have a Asynchronous module w/Elect

(9-PinD/Shell) installed.

• No clocking is required at the equipment level.

• Word Length/Baud rate/Start and Stop pits must be

defined.

• The MUX channels is still operating at 64Kbps, although the

RS232 channel using only a portion of the 64K channel.

Many times multiple channel can run over a single time slot.

(sub rate)

• This form can be determined by the type of connections.

• If the cable terminates into a channel bank or MUX it will be

a ELECT/MUX connection.

• Testing of the relay can be done via looping at any of the

TX/RX connections .

• In most cases Addressing is required for security, but if used

it will need to be disabled during loop testing.

• RS232 Loopback plug, which connects the TX pin with the RX

pin is a helpful tool.

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RFL Communications 21 Sub-MUX Bedienungsanleitung Seite 36