Table 6-9. RJ-12 to DB9 Cable Pin Mapping When Plugged Into RS-422 Port
1
2
3
4
6
7
5
8
9
Pin
Description
1
Not Connected
2
Clock Trve
3
0V
4
Not Connected
5
Not Connected
6
Clock Transmit -ve
7
0V
8
Not Connected
9
Not Connected
Connecting a cable into a RJ-12 port:
1.
If not rack mounted, place one hand on the GridTime 3000 to ensure it doesn’t move
2.
Gently slide the cable’s RJ-12 plug into the port. Ensure the orientation of the plug aligns with the orientation of
the port
3.
Plug the other end of the cable into the relevant port in your network, ensure the orientation is correct.
Removing a cable from a RJ-12 port:
1.
If not rack mounted, place one hand on the GridTime 3000 to ensure it doesn’t move
2.
Press down on the flaps on the cable’s RJ-12 plug
3.
Gently slide the cable out of the port
Note:
Serial String Outputs RS232 and RS422 are output only and will not accept a serial string input.
6.6.2.5
TX Fiber Ports
This section describes how to connect to the GridTime 3000's TX Fiber ports.
The GridTime 3000 features two optical fibre transmitters (Port 13 and 14) for the output of IRIG-B, DCF-77, and
custom pulse signals, as shown in .
To connect to the TX Fibre ports, the link must:
• Be optical
• Use a multimode fiber cable with a straight-tip (ST) connector
• Use a cable with one of the following core structures:
– 50/125 µm plastic optical fiber (POF)
– 62.5/125 µm POF
– 100/140 µm POF
– 200 µm hard-clad silica (HCS)
• Use a transmission wavelength of λ=820 nm
• Not force the cable to exceed its bend radius
• Have a length that allows sufficient power to be delivered to the receiver of the end device.
Cable Length
The allowable cable length is dependent on:
• the environmental temperature
• the core structure of the cable
• the termination quality of the cable’s connector
Installation
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2022 Microchip Technology Inc.
and its subsidiaries
Manual
DS00004572A-page 46
