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DC POWER
DS3/STS-1
L
A
N
DSX-1/E1
(OUT)
NONCRITICAL
A
PWR –
FAIL
M
O
D
E
M
NO COM NC
OUT
IN
-48V
+24V
B
B
+
A
115 AC 50/60Hz
0.8A
0.7A
1.5A
T R S T R S
CLK
CLK
A
B
DSX-1/E1
(IN)
CRITICAL
PWR –
FAIL
+
USE COPPER
CONDUCTORS ONLY!
Chapter 2. Installation and Operation
+
PWR
FAIL
-48V
+24V
0.7A
1.5A
Figure 2-1. DC Power Connector
Table 2-1. DC Connector Symbol Definitions
Symbol
Definition
Battery backup connection. If AC fails, a trap is sent to
PWR FAIL alert user when connected to the 4175043L2 battery
backup system or equivalent
-
Negative side of DC power source (usually -48V)
RET
Positive side of DC power source (usually ground)
Frame Ground
61200290L1-1
MX2800 M13 User Manual
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