M320 Rj-48 Connector Pinouts For The Control Board External Clock Inputs; Table 59: Rj-48 Connector Pinouts - Juniper M320 Hardware Manual

M320 Multiservice Edge Router Hardware Guide

M320 RJ-48 Connector Pinouts for the Control Board External Clock Inputs

Related
Documentation
98
M320 AC Power Supplies Description on page 73
M320 DC Power Supplies Description on page 74
M320 AC Power Electrical Specifications on page 101
M320 DC Power Electrical Specifications on page 105
The two inputs on the CB labeled
accept RJ-48 cables for connecting the CB to 19.44-MHz Stratum 3 reference clocks. .
Table 59 on page 98 describes the RJ-48 connector pinouts.

Table 59: RJ-48 Connector Pinouts

Pin Signal
1 EXT_RRING (negative input clock)
2 EXT_RTIP (positive input clock)
3 Shield ground
4 EXT_TRING (negative output signal—not a clock)
5 EXT_TTIP (positive output signal—not a clock)
6 Shield ground
7 Not used
8 Not used
Connecting an External Clock Device to the M320 Control Board
1.
M320 Control Board (CB) Description on page 45
M320 Chassis Description on page 7
M320 Craft Interface Description on page 15
are RJ-48 receptacles that
EXTERNAL CLOCK INPUT
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