150-231-165-01, Revision 01
Appendix A - Technical Specifications
HLU-231 List 6E
September 22, 1998
45
A
PPENDIX
A - T
ECHNICAL
S
PECIFICATIONS
HDSL Line Code
784 kbps 2B1Q
HDSL Output
+13.5 dBm ±0.5 dB at 135
Ω
HDSL Line Impedance
135
Ω
Maximum Provisioning Loss
35 dB at 196 kHz, 135
Ω
Line Clock rate
Internal “Stratum 4” clock
HDSL Start-up Time
30 sec. (typical), 60 sec. (maximum) per span
One-way DS1 Delay
<200 µs per span without doublers. Doubler delay <80 µs
DSX-1 Line Impedance
100
Ω
DSX-1 Pulse Output
6 V
pk-pk
, pre-equalized for 0-655 feet of ABAM cable
DSX-1 Input Level
+1.5 to -7.5 dBDSX
DS1 Line Rate
1.544 Mbps ±200 bps
DS1 Line Format
AMI, B8ZS or ZBTSI
DS1 Frame Format
ESF, SF or UNFR
Maximum Heat Dissipation
8W (without doubler), 12.5W (with doubler) typical
Fusing
Internal; connected to “FUSE ALARM” output on pin H
HDSL Span Voltage
-140 V to ±100 VDC
Margin Indicator
Displays HDSL span SNR margin for both HDSL spans relative to 10
-7
BER operation
Electrical Protection
Secondary surge and power cross protection on HDSL ports. Requires
external primary protection
Operating Temperature
-40° to +149°F (-40° to +65°C)
Operating Humidity
5% to 95% (non-condensing)
Mounting
AT&T 22- configuration or equivalent
Dimensions
Height:
5.9 in. (15 cm)
Width:
1.4 in. (3.5 cm)
Depth:
10 in. (25.4 cm)
Weight:
0.5 lb. (.23 kg)