Symmetricom XL-GPS User Manual

2

5

1

The Ethernet port interface is:

The TI/ET configuration is via the Keypad, Serial I/O, and Network port. J1 accepts an external 1 PPS or 
Event input signal and measures it against the system-derived time. The a minimum pulse width of the 
input signal is 100 nS. The input impedance is selectable at 100 k

Ω or 50 Ω. The rising edge of the pulse 

is measured with 5 nS resolution relative to the system clock time.

The Rate output is default 10 MPPS and configuration is via the Keypad, Serial I/O, and Network port.

Type:

Standard RJ-45 8 pin connector, 10 Base-T and 100 Base-T standards.

Frame format:

IEEE 802.3

Pulse width:

100 nS, min.

Active Edge:

Rising

High Level:

Logic Hi >1.25 V < 10V

Low Level:

Logic Low < 1.25 V >0V 

Impedance:

100 k

Ω or 50 Ω 

Resolution:

5 nS, single shot

Accuracy:

 

Qty:

1

Connector:

BNC female

Rate:

1 PPS, 10 PPS, 100 PPS, 1 kPPS, 10 kPPS, 100 kPPS, 1 MPPS, 
5 MPPS, 10 MPPS 

Accuracy:

Duty cycle:

60/40%+/-10%

Amplitude (TTL):

TTL Levels into 50

Ω

Qty:

1

Connector:

BNC female