Applications Using Higain Doublers; General; Power Parameters - ADC HiGain HLU-200 User Manual

Table 8. HLU-200 List 1D Power Parameters for Non-Doubler Applications
Power Bus
+5v
-5V
-48V SW Batt.
-48V Talk Batt.
Power Consumption
Power Dissipation
*CPE-I = Customer Premise Equipment (Current option in HRU)

Applications Using HiGain Doublers

General

One or two doublers may be used in the HDSL loops between the HLU and the HRU-412. When using two
doublers in an HDSL loop, the HRU-412 must be locally powered. This section addresses HLU operation with
the HDU-451, List 3 and 4 or the HDU-439 and 437, List 1 mini doublers. The HLU-200 List 1D must not be
used with the older, higher power HDU-451 List 1 or 2 doublers. The HDU 451 List 3, 4 and both mini
doublers are low power doublers which consume 40% less power than either List 1 or 2.

Power Parameters

Table 9 lists the doubler HLU-200 List 1D's current drain on the 4 CBA's power supplies, the unit's power
consumption, and dissipation. The same parameters are shown for two other common CBA plugs, the AT1U
and REBS, for comparison. As can be seen, the power consumption and dissipation (per slot) of the HLU-200
List 1D are comparable to those of the two common CBA plugs.
The maximum power dissipation measures the power that is converted into heat build up within the unit. It
contributes to the total heat generated in the space around the unit.
The maximum power consumption is the total power that the HLU-200 consumes or draws from the CBA's
power buses. This parameter is needed when the Litespan-2000 is battery powered. It determines the battery
capacity required to maintain an 8-hour stand-by battery reserve for emergency situations.
1. The HLU-200 List 1D does not support single doubler applications that
require the line powered HRU remote unit to provide 60 mA of CPE current to
power an external NID. Such applications exceed the maximum allowed 48V
slot current of 360 mA.
2. All single doubler applications with line powered HRU remote units and all 2
doubler applications with locally powered HRU remote units require 2 CBA
slots to be reserved (one empty slot per circuit) to keep the CBA's per slot
power dissipation and consumption within limits.
26
HLU-200 HLU-200
CPE-I* Off CPE I On
590 mA 590 mA
66 mA 66 mA
133 mA 200 mA
0 mA 0 mA
9.33W 12.6W
4.23W 4.88W
November 22, 1996
HLU-200 HRU AT1U
Local Power
590 mA 147 mA
66 mA 0 mA
0 mA 60 mA
0 mA 0 mA
2.9W 3.6W
2.9W 3.6W
150-200-114-03, Issue 03
REBS
155 mA
191 mA
0 mA
109 mA
7W
6.3W
HLU-200 List 1D