SAC6840N

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SD-SDI Changeover Switcher with Clean Switching

The SAC6840N is a 2X1 SD-SDI/ASI auto changeover. The Changeovers are performed by a SAC6840N internal electronic switch with clean switch supporting. The signal is protected by the relays on a SAC6840N rear panel when there is power failure, and maintaining the selected signal at the output.
The input can be selected automatically or manually. Automatic signal selection is based on the monitoring of video signal, EDH, freeze frame, black field and audio group.

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Features  >>> 

• Two 525/625 SD-SDI and ASI inputs
  
• Electronic switcher with relay backup maintains selected input when power down
  
• Automatic mode based on video presence, EDH, freeze frame, black field and audio group presence and status
  
• Clean switching

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Specifications  >>> 

SDI Video Input​
Number: 2 program inputs
Standard: SMPTE 259M-C; 270 Mb/s, 525/625 component
Connector: BNC(IEC 169-8)
Impedance: 75 ohm
Return Loss: >18 dB to clock frequency
Signal Level: 800 mV +/-10%
Equalization: Automatic up to 350m Belden-8281​
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SDI Video Output 
Number: 1 output (Relay protected)
Standards: 259 M-C; 270 Mb/s, 525/625 component
Connector: BNC(IEC 169-8)
Impedance: 75 ohm
Return Loss: >18 dB to clock frequency
Signal Level: 800 mV+/- 10%
DC Offset: 0 V +/- 0.5 V
Rise and Fall Time: 400-700 pS (20 to 80% famplitude)
Overshoot: <10% of amplitude (all outputs terminated)
Jitter: <0.2 UI pk-pk

Video Output 
Standards:
SMPTE259m-C(270Mb/s,525/625 Component) SD-SDI
SMPTE292m(1.485,1.485/1.001Gb/s) HD-SDI
SMPTE424m(2.970,2.970/1.001Gb/s) 3G-SDI
Connector: BNC(IEC169-8)
Impedance: 75Ω
Return Loss: >15dB,5MHz to 270MHz SD-SDI
                     >15dB,5MHz to 1485Hz HD-SDI
                     >15dB up to 3GHz 3G-SDI
Signal Level: 800Mv±10%
DC Offset: 0±0.5V
Rise and Fall Time: 400-1500 ps SD-SDI
                               <270 ps HD-SDI
                               <135 ps 3G-SDI
Overshoot: <10% of amplitude
Jitter: <0.2 UI pk-pk SD-SDI
          <0.2 UI pk-pk HD-SDI
          <0.3 UI pk-pk 3G-SDI
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HDMI Input/Output
Standards: HDMI 1.3（CEA-861-B）2.25Gbps
Signal Format: 480i, 576i, 720p50, 720p59.94, 1080i50,
1080i59.94, 1080p50, 1080p59.94
Connector: HDMI
Equalization: 0-15m

*Specifications are subject to change without notice

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SAC6840N      
SD-SDI changeover switcher with clean switching