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Equalizing Analog Video Distribution Amplifier

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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


Analog Video Input

Standards Any analog video format, up to 2V p-p and 30MHz bandwidth
Connector BNC input per IEC 61169-8 Annex A
Common Mode Range > 6V p-p
CMRR > 70dB to 1kHz
Signal Amplitude 2.5V p-p max
Cable Equalizer 0 to 300m of Belden 8281 or 1694A cable
Impedance 75Ω terminated, 35kΩ Hi-Z (jumper selectable)
Coupling AC or DC (jumper selectable)
Return Loss > 40dB to 10MHz, > 30dB to 30MHz

Analog Video Outputs

Number of Outputs 7
Connector BNC per IEC 61169-8 Annex A
Output Impedance 75Ω
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
Power 5 watts


Number of Slots 1

Ordering Information

7700ADA7-EQ Analog Video Equalizing Distribution Amplifier

Ordering Options

Notes Rear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+1RU 1RU rear plate for use with 7701FR Multiframe
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C or 7800FR 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
7701FR 1RU Multiframe which holds 3 single slot modules
S7701FR 7700 Series Standalone Enclosure