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DS3 Distribution Amplifier

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The 7700DA-DS3 Distribution Amplifier provides automatic coaxial cable equalization, reclocking and signal distribution of DS3 (44.736MB/s), signals. The 7700DA-DS3 accepts a B3ZS-encoded Alternate Mark Inversion (AMI) input signal and provides four reclocked outputs.

The 7700DA-DS3 occupy 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.


  • Supports DS3 (44.736MB/s)
  • Accepts B3ZS-encoded AMI input signals
  • Automatic cable equalization for up to 1000ft of high quality 75Ω cable
  • Signal reclocking and optional jitter attenuator
  • Output wave shaping for DS3 standards compliance
  • High/Low output amplitude setting for long/short cable lengths
  • Loss of signal (LOS) detection/indication
  • Outputs 1's pattern generation upon loss of input signal
  • Electrical output drive level control for enhanced distance
  • Transformer coupled inputs/outputs
  • Input/output transient protection



Standard DS3 (44.7346MB/s)
Number of Inputs 1
Connector Isolated BNC per IEC 61169-8 Annex A
Equalization Automatic to 300m with Belden 8281 or equivalent cable
Return Loss > 20dB up to 44MB/s


Number of Outputs 4 per card reclocked
Connector BNC per IEC 61169-8 Annex A
Waveform Conforms to G.703 compliant masks
Return Loss > 18dB up to 44MB/s


Voltage +12V DC
Power 6 watts
EMI/RFI Complies with FCC Part 15, Class A
Complies with EU EMC Directive


Number of Slots 1

Ordering Information

7700DA-DS3 DS3 Distribution Amplifier

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