Pps - Pulse Per Second Output; Code - Time Code Output - Symmetricom XLi User Manual

S S S S S S S S S
The Frequency Measurement (Freq Meas) option: measures an external frequency applied to the J3
input relative to the XLi's disciplined frequency.
Frequency:
Resolution
Range
Impedance:
Factory Configuration:
Accuracy
See "F113 – J3 Input (Aux Ref, Freq Meas)" on page 146.
1 PPS – Pulse Per Second Output
Pulse width:
On time edge:
Amplitude:
Quantity:
Connector:
If a time reference is unavailable, 1 PPS is as stable as the frequency reference (e.g., the system
oscillator or Aux Ref).
CODE – Time Code Output
Time Code Output Specifications - Modulated (AM) and Demodulated (DC or DCLS)
Format:
Amplitude (AM):
Ratio (AM):
Amplitude (DC):
Quantity:
Connector:
Phasing:
Default Configuration:
Many IRIG reader devices only decode the BCD time-of-year (TOY) portion of the IRIG frame. Reader
devices designed to the IRIG-B122, B002, A132, A002 standard should be compatible with the XLi's
time code outputs.
XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
S S S S S S S S S
1, 5, 10 MHz
120 x 10-12@ 1 Second Interval
12 x 10-12@ 10 Second Interval
1 x 10-12@ 100 Second Interval
1000 x10-6
1 kΩ, 50 Ω
Disabled
"System Time & Frequency Accuracy" on page 6
Refer to
20 μS ±1 μS
Rising
TTL Levels into 50 Ω
1
Female BNC
IRIG-B120, B000, B120 1344, B000 1344
IRIG-A130, A000
NASA 36
3 Vp-p, into 50Ω ±10%
3:1 ±10%
TTL into 50Ω
1
Female BNC
In phase with carrier ± 10 μS
IRIG-B 120
S S S S S S S S S S S S S S S S S S
2
1
5
S S S S
11