MDA-8 Modular Audio and Video Distribution Amplifiers


The MDA-8 ia a 2 RU modular audio and/or video distribution amplifier system. The electronic and rear connector modules are both removeable, and may be placed in any frame position, to accomodate a variety of system sizes and needs.

Each video or audio module provides a complete 1 input, 8 output distribution system. The chassis holds 10 modules, in any combination. Modules may be added at any time, providing flexibility and simple system expansion.

Audio module signal connections are via 3-pin locking headers. Video module signal connections are BNC type.

Separate audio and video power supplies provide noise isolation to both systems. In audio only or video only frames, an optional redundant second supply can be installed.


MDA-8 Module Specifications

Power Requirements115 VAC, 60 Hz or 230 VAC, 50 Hz; 10 W

Standard Analog Video DA Module

VDA-8 Module Picture Not Available

Analog Video Inputs

Input Impedance 75 ohms bridging
Input Signal Level1 V p-p nominal, 2 V p-p maximum
Input Return Loss > 42 dB to 5 MHz
Input Connectors BNC
DC Offset +/-5 V maximum

Video Outputs

Number of Outputs 8 per module
Load Impedance 75 ohms
Output Level 1 V p-p nominal, 2 V p-p maximum
Gain Control Range +0.1/-0.3 dB
Output Return Loss> 40 dB to 5 MHz
Isolation > 40 dB to 5 MHz
DC Offset< 60 mV
Frequency Response +0/-0.05 dB to 5 MHz, +0/-0.3 dB to 10 MHz
Hum on Outputs < 4 mV p-p
Noise (RMS) > 70 dB below 1 V p-p, 10 MHz bandwidth
Differential Gain< 0.2%, 10-90% APL, 10 loads
Differential Phase < 0.2 deg., 10-90% APL, 10 loads
Output ConnectorsBNC
Horizontal Tilt < 0.1%
Vertical Tilt < 0.3%, composite field square wave

Standard Analog Audio DA Module 1X8

Audio Inputs

Input Impedance40 kohms balanced, 20 kohms unbalanced
Input Signal Level+4 dBm nominal, +26 dBm maximum
Input Connectors3-Pin Header
Common Mode Rejection > -80 dB @ 60 Hz

Audio Outputs

Output Impedance50 Ohms
Output Signal Level +4 dBm nominal, +26 dBm maximum
Gain Control Range+8/-5 dB @ +8 dBm input
Output Connectors3-Pin Header x 8
Frequency Response20 Hz to 30 kHz +/-0.1 dB
Total Harmonic Distortion.015%, 20 Hz to 30 kHz
Hum and Noise>-88 dBm, 20 Hz to 30 kHz

Standard Analog Audio DA Module Dual 1X4

ADA-8 Module Picture Not Available

Audio Inputs

Input Impedance40 kohms balanced, 20 kohms unbalanced
Input Signal Level+4 dBm nominal, +26 dBm maximum
Input Connectors3-Pin Header x 2
Common Mode Rejection > -80 dB @ 60 Hz

Audio Outputs

Output Impedance50 Ohms
Output Signal Level +4 dBm nominal, +26 dBm maximum
Gain Control Range+8/-5 dB @ +8 dBm input
Output Connectors3-Pin Header x 8
Frequency Response20 Hz to 30 kHz +/-0.1 dB
Total Harmonic Distortion.015%, 20 Hz to 30 kHz
Hum and Noise>-88 dBm, 20 Hz to 30 kHz

SDI Digital Video DA Module

VDA-8SDI Module

AES/EBU Digital Audio DA Module

ADA-8AES Module

AES3-ID 75 Ohms Digital Audio DA Module

AES3-ID DA Module

Physical Dimensions (Inches)

MDA-819 W x 3.5 H x 14 D (inches)

MDA-8 Rear View

Back Panel with 2 Power Supplies, 3 VDA, 4 ADA and 3 VDA

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