Agilent Technologies 37907A Manual do Utilizador descarregar pdf (Página 36)

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E7574A V.35 Link Interface Module

Features:

• Monitor four bidirectional links per LIM (eight receivers)

• Support V.35, RS-449 (V.11), RS-232 (V.28) interfaces

• Support data rates of 64 kb/s for V.35 and R-S449, and up to 64 kb/s for RS-232.

Connectors: 2 × CHAMP 50-pin connectors.

Framing: None

Timestamp accuracy : +/- 350 msec at 64 kb/s.

Level 1 receive alarm indications:

• Loss of signal

• Loss of clock

Receiver levels

Terminated

V.35

Mark voltage: ---0.2 V to ---1.0 V

Space voltage: 0.2 V to 1.0 V

Common mode

voltage: ± 2 V

RS-449

Mark voltage: ---0.2 V to ---6.0 V

Space voltage: 0.2 V to 6.0 V

Common mode

voltage: ± 7 V

RS-232

Mark voltage: ---3 V to ---15 V

Space voltage: 3 V to 15 V

Receiver impedances

V.35 (bridged): > 20 kohm.

RS-449 (bridged): > 20 kohm.

RS-232 (bridged): 3 kohm to 7 kohm.

Receive clock tolerance: ± 4% at up to 56 kb/s, ± 1% at 64 kb/s.

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Agilent Technologies 37907A Manual do Utilizador Página 36