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High Amplitude Distribution Amplifier (1x4)

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The 7700ADA-ETSI High Amplitude Distribution Amplifier is a general purpose amplifier with an equalizing function for distributing a wide range of digital and analog signals. It has been designed to distribute pulses and signals up to ±3.5V ITU-T G.703 E12 (Physical/electrical characteristics of hierarchical digital interface at 2048kb/s) signals. The 7700ADA-ETSI features one balanced equalized input with four outputs.


  • 75Ω input impedance
  • Distribute signals up to ±3.5V to 30MHz
  • High common mode range and common mode rejection ratio (CMRR)
  • ±5.5dB Gain control range
  • Jumper selectable AC or DC coupling
  • Cable equalizer adjustment range: 0 to 300m of Belden 8281 or 1694A
  • Consistent input impedance if card power is lost



Standards Any analog waveform up to ±3.5V and 30MHz bandwidth
Connector 1 BNC per IEC 61169-8 Annex A
Common Mode Range > 6V p-p
CMRR > 60dB to 1kHz
Signal Amplitude Up to ±3.5V
Cable Equalizer 0 to 300m of Belden 8281 or 1694A cable
Impedance 75Ω
Coupling AC or DC (jumper selectable)
Return Loss > 40dB to 10MHz, > 25dB to 30MHz


Number of Outputs 4 Per Card
Connector BNC per IEC 61169-8 Annex A
Output Impedance 75Ω
Gain Control Range ±6dB
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 < 0.25% 0 to 300m (for single load)
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 < -68dB RMS NTC7 weighting, < -60dB RMS 15kHz to 5.5MHz


Voltage +12V DC
Power 2.5 watts


Number of Slots 1

Ordering Information

7700ADA‑ETSI High Amplitude Analog Distribution Amplifier (1x4)

Ordering Options

Notes Rear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SA Standalone Enclosure Rear Plate
+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
S7701FR 7700 Series Standalone Enclosure