Figure 2-1. Dc Power Connector; Table 2-1. Dc Connector Symbol Definitions - ADTRAN 1200287L1 User Manual

2-3 illustrate the DC power connector and give definitions for the
four connector symbols.
The chassis should be connected to an earth ground using the
ground stud located between the AC and DC power sources on the
rear panel.
PWR FAIL
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N E T

Table 2-1. DC Connector Symbol Definitions

Symbol
Battery backup connection. If AC fails, a trap is sent to
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
MX2800 User Manual
Chapter 2. Installation and Operation
PWR
FAIL

Figure 2-1. DC Power Connector

Definition
PWR
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2-3