Duplication Distribution Amplifier

DA-24 Front View

The DA-24 is a 1 input, 24 output video and stereo audio distribution amplifier, intended for use in duplication facilities. The unit occupies 2 rack units (2RU) of space.

Video and audio gains are adjustable, and the controls are accessible from the front of the unit. The video input is looping. Video connectors are available as either RCA or BNC.

Audio inputs are the balanced XLR type, and audio outputs are the unbalanced RCA type, in order to interconnect easily with most types of duplication equipment.

The DA-24 is designed to deliver broadcast quality audio and video reproduction in a compact enclosure.

DA-24 Specifications

Power Requirements115 VAC, 60 Hz or 230 VAC, 50 Hz; 20 W

Video Inputs

Input Impedance 75 ohms bridging
Input Signal Level1 V p-p nominal, 2 V p-p maximum
Input Return Loss Greater than 42 dB to 5 MHz
Input Connectors RCA x 2 (looping), optional BNC
DC Offset +/-5 V maximum

Video Outputs

Number of Outputs 24 total
Load Impedance 75 ohms
Output Level 1 V p-p nominal, 2 V p-p maximum
Gain Control Range +1/-2 dB
Output Return LossGreater than 40 dB to 5 MHz
Isolation Greater than 40 dB to 5 MHz
DC OffsetLess than 60 mV
Frequency Response +0/-0.05 dB to 5 MHz, +0/-0.3 dB to 10 MHz
Hum on Outputs Less than 4 mV p-p
Noise (RMS) Greater than 70 dB below 1 V p-p, 10 MHz bandwidth
Differential GainLess than 0.2%, 10-90% APL, 10 loads
Differential Phase Less than 0.2 deg., 10-90% APL, 10 loads
Output ConnectorsRCA x 24, optional BNC
Horizontal Tilt Less than 0.1%
Vertical Tilt Less than 0.3%, composite field square wave

Audio Inputs

Input Impedance40 kohms balanced, 20 kohms unbalanced
Input Signal Level+4 dBm nominal, +26 dBm maximum
Input ConnectorsXLR female, x2
Common Mode Rejection -75 dB @ 60 Hz

Audio Outputs

Output Impedance68 ohms unbalanced
Output Signal Level -10 dBV nominal, +18 dBV maximum
Gain Control Range-22 to +3 dBV @ +4 dBm input
Output ConnectorsRCA x 24 (each channel, 2 channels total)
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

Physical Dimensions (Inches)

DA-2419 W x 3.50 H x 5.0 D

DA-24 Rear View

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