Appendix A - Technical Specifications
150-231-175-01, Revision 01
46
September 23, 1998
HLU-231 List 7E
A
PPENDIX
A - T
ECHNICAL
S
PECIFICATIONS
HDSL Line Code
784 kbps 2B1Q.
HDSL Output
+13.5 dBm ±0.5 dB at 135 ohms.
HDSL Line Impedance
135 ohms.
Maximum Provisioning Loss
35 dB at 196 kHz,135 ohms.
Line Clock rate
Internal “Stratum 4” clock.
HDSL Start-up Time
30 seconds (typical), 60 seconds (maximum) per span.
One-way DS1 Delay
<220 microseconds per span.
DSX-1 Line Impedance
100 ohms.
DSX-1 Pulse Output
12 V
pk-pk
for EXTERNAL equalizer or pre-equalized for 0-655 feet of
ABAM-specification 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 Power Consumption
18 Watts (without Doubler); 35 Watts (with Doubler).
Maximum Heat Dissipation
8 Watts (without Doubler); 12.5 Watts (with Doubler).
Fusing
Internal; connected to “FUSE-ALARM” output on pin 32.
HDSL Span Voltage
-130 to -210 VDC.
Margin Indicator
Displays HDSL span SNR margin for both HDSL spans relative to 10
-7
BER
operation.
Electrical Protection
Secondary surge protection on DS1 & HDSL ports. Power cross protection
on HDSL ports.
Operating Temperature
and Humidity
-40
°
to +65
°
Celsius, 5 to 95% (non-condensing)
Mounting
AT&T 220-configuration or equivalent.
Dimensions
Height: 5.9” (15 cm)
Width: 1.4” (3.5 cm)
Depth: 10” (25.4 cm)
Weight 1 lb. 14 oz.
