098-00720-000 Revision D1 – February, 2018 SyncServer 600 Series User’s Guide 277
Appendix B Specifications and Factory Defaults
Specifications
IRIG Output
IRIG outputs are available with the Timing Input/Output Module.
TOD Output
Table B-15. SyncServer S6x0 IRIG Output Signal Specifications
Parameter Specification
Signal Type IRIG B
Connector Type BNC
Connector Label J3, J4, J5, J6, J7, J8
Impedance 50
Signal Level AM: Ratio 10:3 ± 10%
Amp: 3.5 ± 0.5 Vpp,
DCLS: <0.8 V for logic 0, >2.4 V for logic 1
Table B-16. SyncServer S6x0 1PPS+TOD Output Signal Specifications
Parameter Specification
Connector Type 9-pin, female D connector
Connector Label DATA/TIMING
Signal Level RS-232
Timing Relationship between 1PPS
and TOD
Transmission of a TOD message starts 10 ms
(default) after the rising edge of 1PPS signal,
and the transmission is completed within 500
ms, as shown in
Figure B-1. This TOD
message indicates the time of the current 1
PPS rising edge, and is sent at a rate of once
per second.
TOD Frame TOD messages use whole 8-bit bytes for
transmission, with check sum protection.
Message type and message ID are used to
clarify messages. Follows Big Endian
convention when a field is longer than one byte,
where bit 0 represents the least significant bit
(LSB), and bit 0 of each byte is transmitted first.
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