Symmetricom XL-GPS, User Manual

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Standard Features
Quality control bits are 0000 through 0101 (ETE < 10uSec). The XL-GPS shall utilize the
IRIG-B-120 BCDTOY ,IEEE1344 year, leap second, and leap second pending bit as the
UTC epoch. The XL-GPS time format selection shall remain including the Daylight saving
time offset.
Input:
Amplitude (AM): 0.5 Vp-p to 10 Vp-p, 100 kΩ to ground
Ratio (AM): 3:1 ± 10%
Qty 1
Connector: BNC female
Time Code Input IRIG-B000 200-04 W/ IEEE1344
The selectable Code input will have an additional selection for IRIG-B-000 w/ IEEE1344,
configuration is via the Keypad / Display, RS232/422 and the Network port via telnet.
IRIG-B-007 as defined in IRIG STANDARD 200-04 as:
Format B 100 pps
0 = Pulse width code
0 = No carrier/index count interval
0 = BCDTOY,CF,SBS
IEEE1344 as defined in IEEE1344-1995(R2001) ANNEX F, see section 3.3 definitions
XL-GPS SYNC:
The XL-GPS shall first synchronize to IRIG-B-000 w/ IEEE1344 when the Time Quality
control bits are = 0000. The XL-GPS shall remain synchronized (Locked) while the Time
Quality control bits are 0000 through 0101 (ETE < 1uSec). The XL-GPS shall utilize the
IRIG-B-000 BCDTOY , IEEE1344 year, leap second, and leap second pending bit as the
UTC epoch. The XL-GPS time format selections shall remain including the Daylight sav-
ing time offset.
Input:
Amplitude (DC):
l
Logic Low < 1.25V > 0V
l
Logic Hi > 2.5V < 10V
Impedance: 100 kΩ, or 50 Ω.
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