Specifications
Modular I/O Configuration Guide46
Technical Specification
Internal and External Synchronization
Internal Audio Sync 44.1, 48, 96 kHz
External Sync Input  BNC, 75 
External Sync Types Video (BB, CS, TLS), Wordclock, AES/EBU sync
Video Synchronization
Types Blackburst, Composite, Tri-level
Level 
Blackburst/composite: 0.5–1 Vpp 
Tri-level: +/- 0.3 V
Formats PAL/NTSC/HDTV
Rates
525, 625
1080i/50/59.94/60
720p/50/59.94/60
1080p/23.98/24/25/29.97/30/50/59.94/60
Wordclock Level TTL-level @ 75 
AES/EBU types AES professional, AES consumer
AES/EBU level 0.5–5 Vpp @ 75 
General Specifications
Backplane Connector  DIN41612, 64-pin, a+b, male
Power Supply  +5 VDC
Consumption ~300 mA
Dimensions  3 RU, 4 HP (1 slot)
In typical applications, the SY983 sync module is the central clock source for a Modular I/O frame, providing all clocks for 
proper system operation (internal or external sync). Since audio signal distribution and processing within a Modular I/O frame 
is strictly synchronous, a reliable clock source is as important for system performance as a reliable power supply.










