Accuracy: ±50ns (1σ)
Maximum Number of Cards: 6
Ordering Information: 1204-11 (for non-isolated board); 1204-25 (for isolated
board)
Figure 5-38: Model 1204-11 option card rear plate
Figure 5-39: Model 1204-25 option card rear plate
Pin Assignments
Pin No. Signal Function Pin No. Signal Function
1 GND Ground 14 TOD1- TOD1 RS-485- Out
2 TOD1+ TOD1 RS-485+ Out 15 NC -
3 NC - 16 NC -
4 TOD2+ TOD2 RS-485+ Out 17 TOD2- TOD2 RS-485- Out
5 NC - 18 NC -
6 GND Ground 19 NC 5MHz Out (1204-11 Only)
7 GND Ground 20 NC -
8 NC - 21 1PPS- 1PPS RS-485- Out
9 1PPS+ 1PPS RS-485+ Out 22 NC -
SecureSync 2400 User Manual 419
APPENDIX