Agilent Technologies 37907A Manual do Utilizador descarregar pdf (Página 33)

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E7571A 2.048 Mb/s (E1) balanced LIM

Features:

• Monitor four bi-directional links per LIM (eight receivers)

• GSM sub-rate 32/16/8 kb/s and TRAU support

• Fractional E1 support

Connectors: 8 × Bantam connectors

Line codes: HDB3 or AMI.

Framing: To ITU-T G.732, (CRC4) as specified in ITU-T G.704.

Timestamp accuracy : +/- 12 msec.

Level 1 receive alarm indications:

• Loss of signal

• Alarm indication signal

• Line code violation

• Out of frame (loss of frame)

• Remote alarm indication.

• Out of multiframe (CRC4)

Receiver levels:

Terminated: Tx level less 30 dB flat loss, less dB cable loss at 1.024 MHz Bridged: Tx level

less 6 dB cable loss at 1.024 MHz

Receiver impedances

Terminated: 120 ohm

Bridged: 3.7 kohm

Receive clock

tolerance: 2.048 MHz ± 50 ppm

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Agilent Technologies 37907A Manual do Utilizador Página 33