Adc and 3 Doubler Manual do Utilizador descarregar pdf (Página 33)

LTPH-UM-1234-01 Appendix B - Specifications

HDU-409 Lists 1, 2, and 3 April 30, 2003 27

APPENDIX B - SPECIFICATIONS

Appendix A lists the specifications for the HDU-409.

HDSL

Line Code 784 kbps, 2B1Q full duplex

Output +13 dBm

Line Impedance 135Ω

Resistive Signature

Input/Output

5Ω (typical)

Start-up Time

(per span)

15 seconds (typical), 30 seconds (maximum)

Line Clock Rate

Internal Stratum 4 clock

Power Dissipation

3.0W (nominal)

Maximum

Provisioning Loss

35 dB @ 196 kHz, 135Ω

Wander and Jitter

Nominal - The absence of an HDSL framer from the

HDU-409 reduces the Doubler Unit effect on a

circuit’s overall wander and jitter to second order

insignificance when compared to the wander and jitter

of other circuit modules.

Latency

80 µs (maximum either direction)

Mounting

Single 239 T1 Mechanics slot

Electrical Protection

Secondary surge and power cross protection on all

HDSL ports

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 43 44

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Adc and 3 Doubler Manual do Utilizador Página 33