Specifications, Pecifications – ADC ETU-751C User Manual
Page 19
700-701-100-02
Specifications
UTU-701 and ETU-751 List 1
August 9, 2002
9
S
PECIFICATIONS
HDSL Interface
Line Code
2B1Q
Line Rate (selectable in increments of 64 kbps)
Up to 2048 kbps
Protection
K.20, K.21
Compliance
TS 101 135
Transmission Ranges (± 200 m):
Transmission Ranges with 0 dB ETSI Noise
Transmission Ranges with No Noise
HDSL Line
Rate (kbps)
0.4 mm (26 AWG)
Single Twisted-Pair
Copper Wire
0.51 mm (24 AWG)
Single Twisted-Pair
Copper Wire
0.4 mm (26 AWG)
Single Twisted-Pair
Copper Wire
0.51 mm (24 AWG)
Single Twisted-Pair
Copper Wire
256
4.1 km (13,451 ft.)
5.1 km (16,730 ft.)
5.3 km (17,388 ft.)
7.1 km (23,294 ft.)
384
3.6 km (11,811 ft.)
4.7 km (15,420 ft.)
4.7 km (15,420 ft.)
6.7 km (21,982 ft.)
512
3.4 km (11,155 ft.)
4.5 km (14,760 ft.)
4.6 km (15,092 ft.)
6.3 km (20,669 ft.)
768
3.0 km (9,842 ft.)
4.2 km (13,779 ft.)
4.3 km (14,108 ft.)
5.9 km (19,357 ft.)
1152
2.6 km (8,530 ft.)
3.4 km (11,155 ft.)
3.7 km (12,139 ft.)
5.3 km (17,388 ft.)
1536
2.2 km (7,218 ft.)
2.9 km (9,515 ft.)
3.3 km (10,827 ft.)
4.7 km (15,420 ft.)
2048
2.0 km (6,562 ft.)
2.4 km (7,874 ft.)
3.0 km (9,842 ft.)
3.2 km (10,499 ft.)
G.703 Interface
Unstructured Leased Line
2.048 Mbps per ETS 300 247 (D2048U)
Structured Leased Line
2.048 Mbps per ETS 300 419 (D2048S)
Fractional E1
User-selectable DS0 blocking, with user-programmable idle code
Line Code
HDB3
Line Rate
2.048 Mbps
Impedance (jumper selectable)
120
Ω
balanced (twisted-pair)
75
Ω
unbalanced (coax)
CRC-4 mode
User-selectable CRC-4 detection and generation
Compliance
ITU-T G.703, G.704, G.706, G.821, G.823, CTR 12
Timing
Clock Source
G.703 input
External 2.048 MHz clock (per G.703 par. 10)
Internal Oscillator
2.048 MHz ± 50 ppm
Performance Monitoring and Diagnostics
HDSL
Noise margin, pulse attenuation, ES, UAS
G.703 Interface
ES, SES, UAS per G.821. CRC-4 errored seconds, BPV seconds
Major Alarm Relay
Form-C relay contacts (NO, NC, C). Fail-safe operation
Loopbacks
Local interface loopback, local HDSL loopback (V.54 loop 3),
remote loopback (V.54 loop 2)