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

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StandardsAny analog waveform up to ±3.5V and 30MHz bandwidth
Connector1 BNC per IEC 61169-8 Annex A
Common Mode Range> 6V p-p
CMRR> 60dB to 1kHz
Signal AmplitudeUp to ±3.5V
Cable Equalizer0 to 300m of Belden 8281 or 1694A cable
CouplingAC or DC (jumper selectable)
Return Loss> 40dB to 10MHz, > 25dB to 30MHz
Number of Outputs4 Per Card
ConnectorBNC per IEC 61169-8 Annex A
Output Impedance75Ω
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
Power2.5 watts
Number of Slots1

Ordering Information

7700ADA-ETSIHigh Amplitude Analog Distribution Amplifier (1x4)
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR 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
7801FR1RU Multiframe which holds 4 single slot modules
S7701FR7700 Series Standalone Enclosure