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4 Channel AEC Input Card
- Wideband dedicated processing.
- Zero-latency direct outputs and discrete reference inputs per AEC channel.
- AEC processing available to the card’s direct inputs or internally routed sources.
- 11 mS AEC latency, up to 300 mS tail length, and greater than 100 dB/S convergence time.
- Field swappable by certified technicians.
General Specifications
|
Number of Inputs |
Four (4) acoustic echo cancellation. |
|
Connectors |
3.81 mm terminal blocks. |
|
Nominal Input Level |
+4 dBu with 20 dB of headroom. |
|
Maximum Input Level |
+23 dBu. |
|
Mic Pre-amp Gain |
0, 11.8, 24, 44 or 54 dB switchable with ± 24 dB trim. |
|
Mic Pre-amp EIN |
<-127 dB with 150 Ohm source impedance. |
|
CMRR |
> 76 dB @ 1 kHz, unity gain. |
|
Input Impedance |
8k Ohms balanced, 4k Ohms unbalanced. |
|
Phantom Power |
+20 VDC @ 10 mA maximum. |
|
A/D Dynamic Range |
< 115 dB, A-weighted. |
|
A/D Latency |
0.28 mS (direct), 11 mS (AEC enabled). |
|
A/D THD + Noise |
<-94 dB, unweighted. |
|
Tail Length |
> 250 mS. |
|
Convergence Time |
> 100 dB/S. |
Mechanical Data
|
Shipping Weight |
1 lbs. (0.45 kg). |
|
Certifications or Compliance |
EN 55103-1, EN 55103-2, FCC Part 15, RoHS. |
Architect and Engineer Specifications: SymNet 4 Channel AEC Input Card.
The device shall provide four acoustic echo cancellation inputs to an EDGE or RADIUS AEC frame with coarse gain, fine trim and phantom power. Up to four of these devices may be installed in a single EDGE frame for up to sixteen channels of local input and up to one of these devices may be installed in a single RADIUS AEC for up to four channels of local input. Levels, phantom powers, signal inversions and mutes shall be controllable via software. Audio inputs shall be accessed via rear panel 3.81 mm terminal block connectors.
Audio conversion shall be 24-bit, 48 kHz. The dynamic range shall not be lower than 115 dB, A-weighted with a maximum input level of +23 dBu.
The device shall comply with CE and FCC Part 15 emissions limits. The device shall be RoHS compliant. The mounting plate shall be constructed of cold rolled steel, and mount into a SymNet Radius AEC or EDGE frame I/O card slot. The device shall be a Symetrix SymNet 4 Channel AEC Input Card.
