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2x1 Changeover Switch

VAC6840N is an analog changeover switch. The changeover is performed by the relays on VAC6840N rear panel. Selected signal at the output is maintained when power failure. The input can be selected automatically or manually. Automatic signal selection is based on video signal presence and video level detection. An optional remote control panel can be chosen for manual control.

Features
Support NTSC/PAL inputs
Relay switching can maintain selected input on power loss
Automatic mode based on video signal presence and video level detection

Specifications
Analog video input
Input number: 2
Standard: NTSC, PAL-B
Connector: BNC (IEC 169-8)
Signal coupling: DC
Impedance: 75 ohm
Analog video output
Output number: 1
Connector: BNC (IEC 169-8)
Impedance: 75 ohm
Analog audio input
Input number: 4
Signal: Balanced analog audio
Connector: 3-pin connector
Analog audio output
Signal: Balanced analog audio
Connector: 3-pin connector
Power consumption
Power: 2.4W
Positive rail: 350 mA
Negative rail: 20 mA

Ordering Information
VAC6840N     Analog Video and Audio Changeover Switch

The SAC6840N is a 2X1 SD-SDI/ASI auto changeover switch. The changeovers are performed by SAC6840N internal electronic switch with clean switch supporting. The signal is protected by the relays on SAC6840N rear panel when power failure, and the selected signal is maintained at the output.
The input can be selected automatically or manually. Automatic signal selection is based on internal signal alarm status monitoring. An optional remote control panel can be chosen for manual control.

Features
Supporting two 525/625 SD-SDI and ASI inputs
Electronic switch with relay backup maintains selected input on power loss
Automatic mode based on video presence, EDH, freeze frame, black field and audio group presence and status
Supporting clean switching

Specifications
SDI Video Inputs
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 Beldon-8281
SDI Video Outputs
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 & Fall Time: 400-700 pS (20 to 80% amplitude)
Overshoot: <10% of amplitude (all outputs terminated)
Analog Composite Video Output
Standards: NTSC, PAL or PAL-M
Level: 1Vp-p +/-3dB
Impedance: 75 ohm
Return Loss: >40 dB to 5 MHz
DC Offset: 0V +/- 0.05 V
Frequency Response: +/-0.2 dB to 5 MHz
Differential Gain: <1%
Differential Phase: <1.5%
Group Delay: +/-10ns to 5 MHz
Analog Reference
Signal Type: Composite Sync or Composite Video
Impedance: 75 ohm
Input Level: 0.5 to 2 V
Power Consumption
Power: 5.0W
Positive Rail: 750 mA
Negative Rail: 15 mA

Ordering Information
SAC6840N     SD-SDI changeover switch with clean switching

Related Names
Automatic Switch Supplier | Auto Signal Choice | Electrical Device

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