Symmetricom XLi IEEE 1588 User Manual

1

The tables below describe system clock accuracy while locked to the reference source indicated. 
Currently, GPS is the only supported reference source.

.

If an Aux Ref input is available and enabled, the XLi assumes that Aux Ref is a better frequency source 
than its own oscillator. If a timing reference is not available (or becomes unavailable) and Aux Ref is 
enabled, the XLi locks to the Aux Ref input. Under those conditions, frequency output accuracy is equal 
to the reference < 1 x 10

-12

.

To set the time and date manually, see 

1 PPS Output:

±30 ns RMS, 100 ns peak without SA (99%)

Frequency Output Accuracy:

< 2x 10

-12

Frequency/Timing, Allan 
Deviation, Stability:

1 x 10

-9

 @ 1 sec

2 x 10

-10

 @ 1000 sec

1x 10

-12

 @ 1 day

AM Code Output Accuracy:

10 

μS to the 1 PPS

DC Level Shift Code Output 
Accuracy:

200 ns to the 1 PPS

Time to System Lock

<20 min. typical

1U Chassis:

Standard 19" EIA Rack System, hardware included

Receiver Size:

1.75 in. x 17.1 in. x 15.35 in.

Weight:

Standard configuration, without options ~9.25 lb. Fully loaded ~ 10.95 lb