J1 Input - Time Code Or Time Interval - Event Time - Symmetricom XLi User Manual

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J1 Input – Time Code or Time Interval - Event Time
Time Code Input Specifications - Modulated (AM) and Demodulated (DC):
Format:
Amplitude (AM):
Ratio (AM):
Amplitude (DC):
Logic Low:
Logic Hi:
Impedance:
Polarity:
Direction:
Quantity:
Connector:
Related Features
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.
Pulse Width
Active Edge:
Amplitude (DC):
Logic Low:
Logic Hi:
Impedance:
Polarity:
Resolution:
Accuracy
See "F110 – J1 Input (Time Code, TIET)" on page 137.
Note:
Any stray input capacitance loading will impact TIET measurements
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
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IRIG-B120, B000, B120 1344, B000 1344
IRIG-A130, A000
NASA 36
0.5 Vp-p to 10 Vp-p, 100 kΩ to ground
3:1 ±10%
< 1.25V and Min. 300mV
> 1.25V and Max 10V
100 kΩ, 50 Ω
Positive or negative
Forward
1
Female BNC
Propagation delay 0-99999 μS. Error bypass. (See F110 on
100 nS, min.
Rising
< 1.25V and Min. 300mV
> 1.25V and Max 10V
100 kΩ, 50 Ω
Positive
5 nS, Single Shot
"System Time & Frequency Accuracy" on page 6
Refer to
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2
1
page 137
)
5
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