Huahuan Electronics HX.PTP-GM02, Руководство пользователя

Страница: 23 / 45

Beijing Huahuan Electronics Co., Ltd
3.1.4. 1PPS+TOD Port
The 6-pin RJ12 socket marked 1PPS+TOD on the bottom panel of the
HX.PTP-GM02 is used for 1 pulse-per-second and time-of-day signal output. The
pin numbering of the RJ12 connector is shown in Figure 3-4. Please note that
ordinary RJ12 connectors widely used for telephones only have 4 pins, and
therefore is not suitable for the 1PPS+ToD port. The signal definition for the port
is given in Table 3-4. This table should be referenced when making the
1PPS+ToD cable. Both 1PPS and ToD are differential signals that should be
carried by twisted pair cables with 0.4mm~0.5mm diameter conductors such as in
a CAT5 cable. Pairing relationships given in the table must be honored.
Note that the link partner of the 1PPS+ToD may have its own connector type
definitions, and the other end of the cable should be prepared accordingly.
1
6
Figure 3-4 RJ-11 Pin numbering order
Table 3-4 1PPS+ToD port pin definition
Pin Signal Description
1 RS-422_1_N
1PPS, paired
2 RS-422_1_P
3 - -
4 GND GND
5 RS-422_2_N
ToD, paired
6 RS-422_2_P
HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0 13