J3 input - auxiliary reference, 1 pps - pulse per second output, Code - time code output – Symmetricom XLi IEEE 1588 User Manual
Page 21: J3 input – auxiliary reference, 1 pps – pulse per second output, Code – time code output
XLi IEEE 1588 Clock
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997-01510-03, Rev. C, 12/12/2006
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J3 Input – Auxiliary Reference
Auxiliary Reference (Aux Ref):
See “F113 – J3 Input Configuration (Aux Ref)” on page 104.
1 PPS – Pulse Per Second Output
If a time reference is unavailable, 1 PPS is as stable as the frequency reference (e.g., OCXO, Aux Ref).
CODE – Time Code Output
Many IRIG devices only look at the BCD portion of the IRIG frame. Devices that use IRIG A002, B002
and B122 should be able to synchronize with the XLi’s time code outputs.
Frequency:
1, 5, 10 MHz
Amplitude:
1 Vp-p to 10 Vp-p at 1 k
Ω to ground
Amplitude:
1 Vp-p to 3 Vp-p at 50
Ω to ground
Impedance:
Configurable 1 k
Ω or 50 Ω to ground
SNR:
>20db
Quantity:
1
Connector:
Female BNC
Factory Configuration:
Disabled
Pulse width:
20
μS ±1 μS
On time edge:
Rising
Amplitude:
TTL Levels into 50
Ω
Quantity:
1
Connector:
Female BNC
Format:
IRIG-B 000, IRIG-B 120, IRIG-A 003, IRIG-A 133, and NASA 36
Amplitude (AM):
3 Vp-p, into 50
Ω ±10%
Ratio (AM):
3:1
±10%
Amplitude (DC):
TTL into 50
Ω
Quantity:
1
Connector:
Female BNC
Phasing:
In phase with carrier
± 10 μS
Factory setting:
IRIG-B 120