Product ManualManual

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

Download Datasheet


StandardDS3 (44.7346MB/s)
Number of Inputs1
ConnectorIsolated BNC per IEC 61169-8 Annex A
EqualizationAutomatic to 300m with Belden 8281 or equivalent cable
Return Loss> 20dB up to 44MB/s
Number of Outputs4 per card reclocked
ConnectorBNC per IEC 61169-8 Annex A
WaveformConforms to G.703 compliant masks
Return Loss> 18dB up to 44MB/s
Voltage+12V DC
Power6 watts
EMI/RFIComplies with FCC Part 15, Class A
Complies with EU EMC Directive
Number of Slots1

Ordering Information

7700DA-DS3DS3 Distribution Amplifier
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