Cisco 3900 series User Manual

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Cisco 2900 and 3900 Series Hardware Installation
OL-18712-01
Chapter 3 Installing and Connecting the Router
Connecting Power
In Figure 3-29, either the positive source terminal or the negative source terminal is tied to ground.
Figure 3-29 Connecting to One Source Only—Source A or Source B
In Figure 3-30, source A and source B share common negative terminal connections.
Figure 3-30 Connecting Source A and Source B with Common Negative Terminals
A-
361470
A+
B+
B-
+
A-
A+
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B-
+
Battery
Source
Battery
Source
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361471
A+
B+
B-
Va
Vb
+
+
Battery
Source

Cisco 3900 series Specifications

General

Brand	Cisco
Model	3900 series
Category	Network Router
Language	English