Section 150-431-114
Release 01
Page 11
7. INSTALLATION
7.01
Upon receipt of the equipment, visually inspect it
for signs of damage. If the equipment has been
damaged in transit, immediately report the extent of
damage to the transportation company and to PairGain
Technologies.
7.02
The HLU-431 mounts in any standard 400
mechanic mounting. The HLU-431 slot pins are
shown in Figure 4.
8. SPECIFICATIONS
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
Pre-equalized for 0 to 655 feet of ABAM-specification cable
DSX-1 Input Level
+1.5 to -7.5 dBDSX
DSX-1 Line Rate
1.544 Mbps
±
200 bps
DSX-1 Line Format
AMI, B8ZS or ZBTSI
DSX-1 Frame Format
ESF, SF or UNFR
Maximum Power Consumption
14 Watts (without doubler); 25 Watts (with doubler)
Maximum Heat Dissipation
6 Watts (without doubler); 9 Watts (with doubler)
Fusing
Internal; connected to Fuse Alarm output on pin 25
HDSL Span Voltage (Differential)
130 or 200 Vdc
Margin Indicator
Displays HDSL loop SNR margin for each HDSL loop
relative to 10
-7
BER operation
Electrical Protection
Secondary surge protection on DS1 and HDSL ports;
Power cross protection on HDSL ports
Operating Temperature and Humidity
-40
°
to +65
°
Celsius, 5 to 95% (non-condensing)
Mounting
STS, high-density slot
Dimensions
Height:
5.6 in. (14 cm)
Width:
1.4 in. (3.5 cm)
Depth:
5.6 in. (14 cm)
Weight:
1 lb., 2 oz.
9. CERTIFICATION
9.01
FCC compliance: The HLU-431, List 1D was
tested and found to comply with the limits for
Class A digital devices, pursuant to Part 15 of the FCC
rules. These limits are designed to provide reasonable
protection against harmful interference when the
equipment is operated upon in a commercial environment.
This equipment generates, uses and can radiate radio
frequency energy. If it is not installed and used in
accordance with the instruction manual, harmful
interference to radio communications may result.
Operation of this equipment in a residential area is likely
to cause harmful interference, in which case, the user will
be required to correct the interference at his own expense.