The 7700ADA7-EQ Equalizing Analog Distribution Amplifier is a general purpose amplifier for distributing analog video signals. The 7700ADA7-EQ features one balanced equalized input with seven outputs. It has been designed to distribute a wide range of analog video signals. It can also distribute other pulses and signals that are less than 2V p-p.

The 7700ADA7-EQ occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.


  • 75Ω or high impedance input (jumper selectable)
  • High common mode range and common mode rejection ratio (CMRR)
  • Gain control
  • Jumper selectable AC or DC coupling
  • Cable equalizer adjustment range: 0 to 300m of 8281 or 1694A
  • Looping feature with external "T" connector and external
  • Consistent input impedance if card power is lost

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Analog Video Input
StandardsAny analog video format, up to 2V p-p and 30MHz bandwidth
ConnectorBNC input per IEC 61169-8 Annex A
Common Mode Range> 6V p-p
CMRR> 70dB to 1kHz
Signal Amplitude2.5V p-p max
Cable Equalizer0 to 300m of Belden 8281 or 1694A cable
Impedance75Ω terminated, 35kΩ Hi-Z (jumper selectable)
CouplingAC or DC (jumper selectable)
Return Loss> 40dB to 10MHz, > 30dB to 30MHz
Analog Video Outputs
Number of Outputs7
ConnectorBNC per IEC 61169-8 Annex A
Output Impedance75Ω
Gain Control Range±5dB
DC Level< ±100 mV (with DC Coupling active)
Frequency Response< ±0.05dB no equalization (to 5.5MHz)
< ±0.09dB for 5 to 100m Belden 8281 or 1694A (to 5.5MHz)
< ±0.15dB for 100 to 300m Belden 8281 or 1694A (to 5.5MHz)
Differential Gain< 0.17% 0 to 300m
Differential Phase< 0.19°0 to 300m
C/L Gain Inequality< ±0.1% for all cable lengths
C/L Delay< ±2ns
Output Isolation> 42dB to 10MHz, > 32dB to 30MHz
Output Return Loss> 40dB to 30MHz
Noise Performance< -78dB RMS NTC7 weighting
< -70dB RMS 15kHz to 5.5MHz
Voltage+12V DC
Power5 watts
Number of Slots1

Ordering Information

7700ADA7-EQAnalog Video Equalizing Distribution Amplifier
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+1RU1RU rear plate for use with 7701FR Multiframe
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7701FR1RU Multiframe which holds 3 single slot modules
S7701FR7700 Series Standalone Enclosure