Description
The Soundweb London Telephone Hybrid Cards are designed to populate any of the four card slots on Soundweb London BLU-800, BLU-805, BLU-806, BLU-320, BLU-325, BLU-326, BLU-160 and BLU-120 devices. These cards enable Soundweb London devices to interface with a standard POTS (aka PSTN or Analog PBX) telephone network.
The Soundweb London Telephone Hybrid Cards also have two analog inputs which allow each Telephone Hybrid Card to receive two microphone or line level signals. These analog inputs offer Phantom Power, configurable per channel and software controlled analog gain in 6dB steps from 0dB to 48dB.
Specifications
- Analog Inputs: 2 electronically balanced on Phoenix/Combicon removable screw connectors
- Mic/Line Inputs: Nominal gain 0dB, electronically switchable up to +48dB,in +6dB steps
- Input Impedance: 3.5kΩ
- Maximum Input Level: +20dBu with 0dB input gain,+8dBu with 12dB gain, balanced, 150Ω
- CMRR: >75dB at 100Hz, >66db at 1kHz
- Input Noise (E.I.N.): <-128dBu typical with 150Ω source, 20kHz, +48dB gain
- Phantom Power: 48V nominal, selectable per input
- A/D Latency: 12/Fs [0.25ms@48k]
- THD+N: <0.005% typical (20Hz to 20kHz @ +10dBu), balanced, 150Ω
- Frequency Response: 20Hz to 20kHz +/-0.2dB, balanced, 150Ω
- Dynamic Range: 117dB, 20Hz to 20kHz, A-weighted: 114dB unweighted
Telephone Interface
- AC-REN: 0.0B
- Dynamic Range: 67dB
- Frequency Response: 300 to 3.3kHz
- THD: <0.3%
- Transhybrid Loss: >48dB with LEC enabled
- LEC Tail Time: 64ms
- TX Level: -10dBm RMS average
- RX Level: +3.2dBm RMS
