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Symmetricom XL-GPS User Manual

Symmetricom XL-GPS
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Standard Features
l Assuming the input carrier to be 5 x 10
–11
l Accuracy referenced to the carrier: 1 x 10
-10
l Frequency/Timing Allan Deviation assuming the input carrier to be 3 X 10
–11
@ 10
sec
l Stability: 5 x 10
-9
@ 10 sec
International Atomic Time (TAI) is the primary international time standard from which
other time standards, including UTC, are calculated. TAI is kept by the BIPM (Inter-
national Bureau of Weights and Measures), and is based on the combined input of many
atomic clocks around the world, each corrected for environmental and relativistic effects. It
is the primary realisation of Terrestrial Time.
Discrete 1PPS Output
Signal Type: > 2V into 50 Ω with a fixed 12ns ± 8ns delay with respect to the CPU 1PPS
Output.
Time Code Output IRIG-B120 200-04 W/ IEEE1344
The selectable Code output will have an additional selection for IRIG-B-120 w/
IEEE1344, configuration is via the Keypad / Display, RS232/422 and the Network port via
telnet.
IRIG-B-120 IS DEFINED IN IRIG STANDARD 200-04 AS:
Format B 100 pps
1 = Sine wave amplitude modulated
2 = 1kHz carrier/1mSec resolution
0 = BCDTOY,CF,SBS
IEEE1344 as Defined in IEEE Std C37.118
TM
-2005, Annex F:
IRIG-B format, <sync>SS:MM:HH:DDD<control bits> <binary seconds>
Where:
<sync> is the on time marker
098-00116-000 Rev. A............................... Page 11 of 221

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Symmetricom XL-GPS Specifications

General IconGeneral
BrandSymmetricom
ModelXL-GPS
CategoryReceiver
LanguageEnglish

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