Applications - ADC HiGain HRU-402 User Manual

150-402-100-03
•
Improved DS-1 auto mode
•
Bipolar Violation Transparency (BPVT) and Bit Error Rate (BER)
options
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Remote DS-1 Alarm (RDA) option
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Alarm Pattern (ALMP) option
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DS-1 Line Code auto options
A
PPLICATIONS
HRU-402 List 1 and List 3 provide a cost-effective and easy-to-deploy
method for delivering T1 service over a single metallic pair. Conventional,
in-line T1 repeaters, cable pair conditioning, pair separation, and bridged tap
removal are not required. The HRU-402 List 3 is powered locally by an
expanded voltage range from -20V to -70V. This allows operation in sites
where the traditional -48V is not available.
Each cable pair loop has less than 35 dB of loss at 196 kHz with 135 Ω driving
and terminating impedances.
cable gauges at 196 kHz and 135 Ω .
between the HLU, HRU, and HDU modules. Without specific insertion loss
measurement data, add 3 dB for each bridged tap and 1 dB for each cable
gauge change.
Cable Gauge
26 AWG (0.4 mm)
24 AWG (0.51 mm)
22 AWG (0.61 mm)
19 AWG (0.91 mm)
HRU-402 List 1 and List 3
Table 1
Table 1. HDSL Loss Over Cables
Loss at 196 kHz (dB/kft)
3.88
2.84
2.18
1.54
November 5, 1998
provides a guide for the loss of various
Table 1 applies to the HDSL cable pairs
Ω
83
52
32
16
Product Overview
per kft
3