M320 RJ-48 Connector Pinouts for the Control Board External Clock Inputs
The two inputs on the CB labeled EXTERNAL CLOCK INPUT are RJ-48 receptacles that accept RJ-48 cables for connecting the CB to 19.44-MHz Stratum 3 reference clocks. For more information, see M320 Control Board (CB) Description. Table 1 describes the RJ-48 connector pinouts.
Table 1: 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 |
