Справочник Пользователя для Symmetricom XLi IEEE 1588

1

The Time Interval - Event Time (TIET) option measures a 1 PPS or Event input signal on J1 against the 
XLi derived time. The rising edge of the pulse is measured against XLi time with 5 ns resolution.

Any stray input capacitance loading will impact TIET measurements

Configuring J1 as the input for a time code reference source is not supported.

Configuring J2 as a Programmable Pulse Output (PPO) is not supported.

Pulse Width

100 ns, min.

Active Edge:

Rising

Amplitude (DC):

Logic Low:

< 1.25V and Min. 300mV

Logic Hi:

>1.25V and Max 10V

Impedance:

100 k

Ω, 50 Ω

Resolution:

5 ns, Single Shot

Accuracy

Refer to 

Rate:

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

Duty cycle:

40-60% 

± 10%

Amplitude (TTL):

TTL Levels into 50 

Ω

Quantity:

1

Connector:

Female BNC

Factory setting:

10 MPPS