Preamplified Digital Microphone

Analog or ARINC-429 Digital Output in the Cockpit

The L3 DM58 is a preamplified digital microphone that provides an ED-112A-compliant integrated Cockpit Area Microphone (CAM) and preamplifier functionality for commercial and military aircraft. The microphone output may be either analog for current generation Cockpit Voice Recorders (CVRs) or digital for next generation recorders. The inclusion of an ED-112A compliant preamplifier benefits customers by reducing system part count, size and weight.

DM58 Key Features:

  • Integrated CAM and preamplifier for CVR
  • ED-112A CAM and ED-112 Preamplifier are compliant with latest ED-112A specifications
  • User-selectable attenuation
  • Compact size, and simplified installation and wiring

Compliant with ED-112A specifications

Both the L3 DM58’s Cockpit Area Microphone (CAM) and preamplifier are ED-112A compliant, providing versatility when used with either current CVRs or digital next-generation voice recorders. The ED-112A CAM includes Micro-Electro-Mechanical Systems (MEMS) technology, improved vibration immunity for helicopter and turboprop installations, and improved cell phone/GSM signal immunity. The ED-112 Preamplifier features both analog and digital output options and features Digital Signal Processing for precise performance.

Versatile mounting options and formats

The DM58’s mounting capability is compatible with legacy CAM models. Additionally, the ED-112 Preamplifier features both analog and digital output options and features Digital Signal Processing for precise performance. The integrated microphone and preamplifier also supports modern glass cockpits where a traditional CVR control unit/preamplifier is not desired.
 TSO approval simplifies certification for aircraft manufacturers, installers and end users.

PRODUCT DETAILS

Height 0.9 in. (2.3 cm)
Width 1.1 in. (2.8 cm)
Depth 3.5 in. (8.9 cm)
Weight < 0.3 lb. (0.14 kg)

POWER

Requirements CVR powered or 28 VDC (option)
Consumption < 1 W

COMPATIBILITY

FA2100, FA2200, FA2300, FA5000, SRVIVR and APR2500

INTERFACE

Aircraft/Recorder Interface Four-wire shielded cable pigtail
Compatibility Compatible with legacy three-wire installations

CONTROLS

Attenuation, 0 and 12 dB (accessible during installation only)

INDICATORS

Microphone Peak / Overload (accessible during installation only, not visible to pilots in installed orientation)

ENVIRONMENTAL

Temperature -15 C to +70 C
Altitude 15,000 ft.
Humidity 95% RH (non-condensing)
Comprehensive DO-160G test categories upon request

PRODUCT CERTIFICATION

FAA TSO-C123c

REGULATORY SPECS

EUROCAE MOPS ED-112A, RTCA DO-160G, RTCA DO-254, RTCA DO-178B Level D

COMPANY CERTIFICATION

L3 Aviation Recorders Quality Management System is ISO 9001:2008 and AS9100:2009 Rev. C Certified

Product Support

Repair and Overhaul Administration:
Email: DLAR-repairstation@L3T.com

Product Support/Customer Service:
Email: DLAR-aviationproducts@L3T.com

AOG Services:
Phone: +1 (941) 371-0811

Sales

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