363-206-305
Circuit Pack Descriptions
7-60
Issue 3 June 2000
Power Circuitry
7
The 28-type circuit packs supply +5V power to the HDSL circuit packs in the
corresponding DS1PM circuit pack groups. These inputs are diode ORed and the
output is fused and then filtered before it is used to power the rest of the circuit
pack. A failure of the fuse or converter causes the red FAULT LED to light.
!
CAUTION:
For power reliability, when a muldem is equipped with HDSL circuit packs,
the associated function unit must be equipped with two 28-type circuit
packs.
Figure 7-24 and its associated table show HDSL options selectable via S1.
Figure 7-24. HDSL DIP Switch Settings
HDSL DIP Switch Settings
HDSL Options
DIP Switch Settings
HDSL Port #1 HDSL Port #2
S1-1 S1-2 S1-3 S1-4
HDSL Master — OFF — OFF
START-UP Slave — ON — ON
HDSL Local OFF — OFF —
MANAGEMENT Through ON — ON —
1234
ON
OFF
S1
Component Side
Edge
Connector
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