Skip to Main Content


Dual HD/SD-SDI Smart Automatic Changeover

Interact with this product in a Layout Tool:

The 7700ACO2-HD is the industry's leading smart automatic changeover (ACO) for high definition 1.5Gb/s or standard definition 270Mb/s serial digital video signals.

This device provides:

  • Dual processing paths on a single module
  • Smart HD/SD-SDI automatic protection switching of both paths
  • Video and Audio Proc Amp Control
  • Built in Trouble Slide per ACO
  • Optional IntelliGain® Audio Loudness Processing with Dynamic Audio Range Control

These modules have dual independent processing paths providing both high density and availability of any HD-SDI or SD-SDI video inputs signals (program and back-up). These modules provides a passive loop-thru of both primary and backup input video sources and provides dual safe program outputs.

The 7700ACO2-HD incorporates Evertz essential audio and video monitoring which is used to drive the real time automatic switch logic processor. Common parameters include user configurable loss of signal, freeze, and black detect.

The 7700ACO2-HD can optionally be ordered with Evertz's patented IntelliGain® Audio and Loudness Processor. The IntelliGain® processor is designed to normalize perceived differences in audio loudness in real time for any HD/SD-SDI signal with embedded audio. This module will internally de-embed the audio signals, regulate the signal level based on a used defined target loudness level, then re-embed the corrected audio signals back into the video output.

VistaLINK® enables control and configuration capabilities via Simple Network Management Protocol (SNMP). This offers the flexibility to manage the module status monitoring and configuration from SNMP - enabled control systems such as Evertz VistaLINK® PRO locally or remotely.

The 7700ACO2-HD occupies two card slots and can be housed in the 3RU 7800FR frame which has a 15 slot capacity, or the portable 3RU 350FR frame which has a 7 slot capacity. The 7800FC frame controller is required for configuration.


  • Video Inputs and Outputs

  • Auto sensing of HD and SD input formats
  • Smart Automatic changeover based on user programmable switch logic
  • Card edge menu control for configuration of operating modes and LEDs for reporting signal presence, router state, module status
  • VistaLINK® capable for remote monitoring, control and configuration capabilities via SNMP; using VistaLINK® PRO, CP-2116E or CP-2232E Control Panels. VistaLINK® is available when modules are used with the 3RU 7800FR frame and a 7800FC VistaLINK® Frame Controller module in slot 1 of the frame
  • Bypass relay protection on main program output
  • Integrated SoftSwitch™ technology for clean video and "popless" embedded audio switching
  • IntelliGain® Audio and Loudness Processor

  • Consistent audio loudness levels within a channel and/or program
  • Gain control within a program interval to preserve audio dynamic range
  • Artifact-free transitions between program and commercials
  • Elimination of drastic volume changes during commercials and interstitials
  • Ideal for aggregator applications and multi-channel playout facilities (DTH, Cable, IPTV...)


Serial Video Input

Standard Auto-detects standard 1.485Gb/s SMPTE ST 292-1 (1080i/59.94, 1080i/50, 720p/59.94, 720p/50) SMPTE ST 260, SMPTE ST 274, SMPTE ST 296, SMPTE ST 349 (HD or SD carrier) 270Mb/s SMPTE ST 259-C (525i/59.94 or 625i/50)
Number of Inputs 2
Connector BNC per IEC 61169-8 Annex A
Input Equalization Automatic 100m @ 1.5Gb/s with Belden 1694 or Equivalent cable
Return Loss > 20dB up to 270MHz
> 12dB up to 1.5GHz

Reclocked Serial Video Output

Standard Same as input
Number of Outputs 2 Smart switched program outputs (Input 1 is bypass relay protected)
Loop thru on Input A and Input B
Connector BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ±0.5V
Rise and Fall Time 200ps nominal
Overshoot < 10% of amplitude
Return Loss > 20dB up to 270MHz
> 15dB at 1.5Gb/s
Jitter < 0.16 UI (HD)


Voltage +12V DC
Power 20 Watts
EMI/RFI Complies with FCC regulations for class A devices
Complies with EU EMC directive


Number of slots 2

Ordering Information

Notes Requires 7800FC for full module control
7700ACO2-HD Dual HD/SD-SDI Smart Automatic Changeover

Ordering Options

Notes Rear plate must be specified at time of order - eg: [model]+3RU
+IG Integrated IntelliGain® Audio and Loudness Processor
+TL Thumbnailing option with monitoring (Only available when used with a 7700FC/7800FC frame controller)
Rear Plate Suffix
+3RU 3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes


350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7801FR 1RU Multiframe which holds up to 4 single slot or 2 dual slot modules


7800FC VistaLINK® Frame Controller
CP-2116E-H Remote Control Panel
CP-2232E Remote Control Panel