PairGain ETU-772, Quick Installation Manual, Page: 8 / 32

Overview 700-722-900-02, Revision 02
2 June 21, 1999 UTU-722 and ETU-772 List 1
ETU-772 D
ESKTOP
U
NIT
The ETU-772 is housed in a plastic enclosure with interface and power
connectors for use as an integrated desktop unit. All functions of the
ETU-772, with exception of power requirements, are identical to the
UTU-722. The ETU-772 requires a source of 100 to 240 volt, 50 or 60 Hz,
AC power.
T
RANSMISSION
R
ANGES
Transmission ranges assume the presence of noise according to the ETSI
model described in TS 101 135. The expected Bit Error Rate (BER) under this
model is 10
-7
. The transmission ranges in such a noise environment at the
various HDSL line rates over one twisted-pair of 0.4 mm and 0.51 mm copper
wire are listed below.
‘
Transmission Ranges with ETSI Noise
Wire Size and Transmission Range (with ETSI Noise)
HDSL Line
Rate (kbps)
(a)
0.4 mm (26 AWG)
Single Twisted-Pair
Copper Wire
0.51 mm (24 AWG)
Single Twisted-Pair
Copper Wire
128 5.0 km (16,404 ft.)
6.3 km (20,669 ft.)
(b)
256 4.1 km (13,451 ft.) 5.1 km (16,732 ft.)
(a) A selected HDSL line rate of 64 kbps is transmitted at 128 kbps.
(b) The maximum no-noise transmission range is approximately 8.5 km.