L-3 / Vigra MMI-4311 VME Digital Audio Processor
L-3/Vigra VME Modules. Channels: ** Four stereo channels, Sample Rate: ** Programmable 1500 Hz to 50, Dynamic Range: ** Up to 80 dB (Sigma-Delta A/D conversion).
- Model
- L-3/Vigra MMI-4311
- Calibration
- Available on request
- Price
- $1,250
- RFQ ref
- MMI-4311
This unit
The L-3 / Vigra MMI-4311 is a VMEbus-resident digital audio processor delivering four-channel stereo signal acquisition and playback with full programmable matrix mixing and onboard DSP capability. The board combines an MMI-430 mainboard with a DB-311 daughterboard to provide four independent Motorola DSPs, four stereo microphone inputs with software-selectable preamplifier gain (0 dB, 20 dB, or 40 dB), four stereo line inputs with fixed -6 dB attenuation buffers accepting up to 2 Vrms, and four stereo line outputs. All analog I/O connects via 3.5 mm stereo phone jacks.
Technical Specifications
Audio Channels: Four stereo channels
Digital Signal Processors: Four Motorola DSPs
Onboard Memory: 4 MB dual-port RAM
Sample Rate: Programmable 1500 Hz to 50,000 Hz continuously
Frequency Response: 20 Hz to 45.5% of selected sample rate
Dynamic Range: Up to 80 dB (Sigma-Delta A/D conversion)
Line Input Attenuation: Fixed -6 dB gain buffers; maximum input 2 Vrms
Microphone Preamplifier Gain: Software-controlled 0 dB, 20 dB, or 40 dB
Host Interface: VMEbus with DIP switch configuration (base address and interrupt level)
Key Features
Fully programmable 4-channel matrix mixer routing any input to any output or combination
Sigma-Delta conversion technology for accurate sound reproduction across dynamic range
Software-controlled input sensitivity and output level adjustment
DiSPATCH software development package includes C library (K&R/ANSI standard), device driver, DSP firmware, tone generator, and sample applications
Typical Applications Simulators, multimedia workstations, trainers, sonar systems, industrial control, voice synthesis and recognition, sound analysis, and communications systems.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 20 Hz to 45.5% of sample rate | Voltage / Current Range: 2 Vrms maximum input |
L-3/Vigra MMI-4311 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the L-3/Vigra MMI-4311. All calibrations are performed to NIST-traceable standards and ship with a certificate. Turnaround is typically 1–3 business days after receipt.
L-3/Vigra MMI-4311 price
This L-3/Vigra MMI-4311 is listed at $1,250. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
L-3/Vigra MMI-4311 calibration cost
NIST-traceable calibration for the L-3/Vigra MMI-4311 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Turnaround is 1 to 3 business days after receipt. See full calibration details →
