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GPS Port Pinout
GPS Port Pinout
The platform is capable of receiving or sourcing GPS signals of 1 PPS & 10 MHz. These interfaces are
provided by two mini-coax 50-Ohm, 1.0/2.3 DIN series connector on the front panel. Similarly there are two
mini-coax 50-Ohm connectors provided in the front panel to output this 1PPS and 10MHz.
The table below summarizes the GPS port pinouts.
Table 16: GPS Port Pinout
Waveform
Amplitude
Impedance
Pulse
Width
Rise Time
Time of Day Pinout
Table 17: ToD pinouts
Pin
1
2
3
4
5
6
7
8
Cisco NCS 560-4 Router Hardware Installation Guide
108
10 Mhz (input and output)
Input—Sine wave
Output—Square wave
Input— > 1.7 volt p-p(+8 to +10 dBm)
Output— > 2.4 volts TTL compatible
50 ohms
50% duty cycle
Input—AC coupled
Output—5 nanoseconds
Signal
Direction
Name
RESERVED
Output or
Inputs
RESERVED
Output or
Inputs
1PPS_N
Output
GND
—
—
1PPS_P
Input
TOD_N
Output or input
TOD_P
Output or input
1PPS (input and output)
Input—Pulse shape
Output—Pulse shape
Input— > 2.4 volts TTL compatible
Output— > 2.4 volts TTL compatible
50 ohms
26 microseconds
40 nanoseconds
Description
Do Not Connect
1PPS RS422 signal
—
—
1PPS RS422 signal
Time of Day R422 output or input signal
Time of Day R422 output or input signal
Pinout and LED Details
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