Section 150-619-100
Revision 01
Page 3
2. APPLICATIONS
2.01 Cost-Effective. HiGain-2 provides easy-to-
deploy method for delivering T1 High Capacity
Digital Service (HCDS) over one metallic pair. The
fiber-like quality service is deployed over one
unconditioned, non-loaded copper pair.
Conventional in-line T1 repeaters are not required.
Cable pair conditioning, pair separation and bridged
tap removal are not required.
2.02 General Guidelines. The range deployment
rules in Table 1 require that the HiGain-2 loop has
less than 35 dB of loss, at the 2B1Q line rate of 392
kHz, with 135 ohm driving and terminating
impedances. Adhering to this rule results in an
operating margin of at least 6 dB. The HiGain-2
system operates with any number of other T1,
POTS, Digital Data Service (DDS) or other HiGain-2
Systems sharing the same cable binder group.
HiGain-2 systems can be used with customers
requiring DS1 service on a temporary or permanent
basis. HiGain-2 also provides a means of quickly
deploying service in advance of fiber-optic
transmission systems. With the HiGain-2 system,
service can be provided within hours. Fiber optic
systems can be installed at a leisurely pace and cut
over from HiGain-2 when it is convenient. The
installed HiGain-2 system can then be easily
removed and utilized elsewhere.
3. SPECIFICATIONS
VHDSL Line Code
1.568 Mbps 2B1Q
VHDSL Output
+13.5 dBm
±
0.5 dB at
135 ohms
VHDSL Line Impedance
135 ohms
Maximum Provisioning
Loss
35 dB at 392 kHz, 135
ohms
Line Clock Rate
Internal Stratum 4
clock
VHDSL Start-up Time
30 seconds (typical),
60 seconds
(maximum)
One-way DS1 Delay
<220 microseconds
DSX-1 Line Impedance
100 ohms
DSX-1 Pulse Output
Pre-equalized for 0 to
655 feet of ABAM
DSX-1 Input Level
+1.5 to -7.5 dB DSX
DS1 Line Rate
1.544 Mbps
±
200 bps
DS1 Line Format
AMI, B8ZS or ZBTSI
DS1 Frame Format
ESF, SF or unframed
Power Consumption
14 Watts (typical), 16
Watts (maximum)
Heat Dissipation
6 Watts (typical), 7
Watts (maximum)
Fusing
Internal; connected to
fuse alarm output on
pin 32
Span Voltage
-170 Vdc maximum
Margin Indicator
Displays span SNR
margin for the span
relative to 10
-7
BER
operation
Electrical Protection
Secondary surge
protection on DS1 and
VHDSL ports Power
cross protection on
VHDSL port
Operating Temperature
and Humidity (non-
condensing)
-40° to 65º Celsius,
5% to 95% humidity
Mounting
STS, 28-slot high-
density shelf or
equivalent
Dimensions
Height:
5.9 in.
Width:
1.4 in.
Depth:
10 in.
Weight
1.26 lbs
