Table 5-19:
Pin-out, OUTPUT connector "J1"
Pin Num-
ber
Signal Function Notes
Top row of 5 pins
1 PPS_OUT 1PPS output TTL level on 50Ω
2 SERIAL_
OUT_TX
RS-232 Trans-
mit data
Data output (ToD messages)
3 SERIAL_IN_
RX
RS-232 Receive
data
Data input into unit; use this to transmit com-
mands to the unit)
4 NC No connection
5 GND Ground
Bottom row of 4 pins
6 NC No connection
7 NC No connection
8 NC No connection
9 NC No connection
Pin Assignments: INPUT connector J2
Figure 5-47: INPUT connector J2
Table 5-20:
Pin-out, INPUT connector "J2"
Pin Number Signal Function Notes
Top row of 5 pins
1 PPS_IN 1PPS input
448 SecureSync 2400 User Manual
APPENDIX