Time & Reference - Safran SATCORE Series User Manual

SATCORE SERIES
USER's MANUAL
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2.2.2.2 Time & Reference
The Satcore Direct embeds two separate hardware components to support payload reception and
TT&C modem. This implies that the Satcore Direct has two separate time inputs and two separate
frequency reference inputs. For a complete synchronization of the equipment, all these inputs must
be connected.
2.2.2.2.1 P
AYLOAD RECEIVER TIME
External Reference
 Input port
 Frequency
 Impedance
 Level
Internal Reference
 Frequency
 Frequency stability
Time Code Reference
 Time code
 Amplitude
 Impedance
 Time tagging accuracy
 Flywheel mode
 Leap second & leap year management : Yes
ZODIAC DATA SYSTEMS PROPRIETARY
Reserved
Reserved
Reserved
Table 3: IS00452 I/O Connectors for Satcore Direct
&
REFERENCE CHARACTERISTICS
1 port
10 MHz sine or square
50 
0.5 to 10 Vpp (if DC = 0)
DC max. =  4 V
10 MHz
  5 ppm ageing first year
  2 ppm ageing following years
  15 ppm vs temperature variations (5° to 40°)
IRIG-B or NASA 36
0.8 to 8 Vpp
100 k
 50 s
Yes
D102751
ZDS Ref :
SMA
SMA
SMA
Issue : 1 Rev.: 0
Date : July 11, 2019
Reserved
Reserved
Reserved
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