RFL Communications 21 Sub-MUX Manual de usuario descargar pdf (Pagina 35)

Solutions for an evolving world.

Protective Relay

Many forms

RS449 (37pin)

v.35

MUX or

Channel

Bank

Protective Relay

MUX or

Channel

Bank

Synchronous Electrical Interface’s/MUX

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

(D/Shell) installed.

• Requires a single clock to operate, much like the SHFI.

• The channels will operate at 64Kbps, this is many times

referred to as C37.94, which a standard defining the parameter

of the channel.

• 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 . Many times these types of connections will not

have an available clock and must use the clock of the

MUX/CHBNK to operate.

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

will need to be disabled during loop testing.

Electrical,

µwave Radio

or Fiber

Many forms

RS449 (37pin)

v.35

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RFL Communications 21 Sub-MUX Manual de usuario Pagina 35