USER MANUAL
Models:
CDA-V31,
CDA-V50,
1:3 Audio-Stereo / Video DA
1:5 High Resolution Video DA
For maximum results, use Comprehensive
Brand Premium High Resolution cables
and connectors.
Contents
1
Introduction 1
2
Getting Started 1
3
Overview 1
4
Your CDA-V31 and CDA-V50 2
4.1 Your CDA-V31 1:3 Audio-Stereo / Video DA 2
4.2 Your CDA-V50 1:5 High Resolution Video DA 3
5
Connecting the CDA-V31 and CDA-V50 4
5.1 Connecting the CDA-V31 1:3 Audio-Stereo / Video DA 5
5.2 Connecting the CDA-V50 1:5 High Resolution Video DA 6
6
Technical Specifications 7
Figures
Figure 1: CDA-V31 Audio-Stereo / Video DA 2
Figure 2: CDA-V50 1:5 High Resolution Video DA 3
Figure 3: CDA-V50 1:5 High Resolution Video DA Underside Panel 4
Figure 4: Connecting the CDA-V31 1:3 Audio-Stereo / Video DA 5
Figure 5: Connecting the CDA-V50 1:5 High Resolution Video DA 6
Tables
Table 1: Features and Functions of the CDA-V31 Audio-Stereo / Video DA 3
Table 2: Features and Functions of the CDA-V50 1:5 High Resolution Video DA 4
Table 3: Features and Functions of the CDA-V50 Underside Panel 4
Table 4: Technical Specifications of the CDA-V31 1:3 Audio-Stereo / Video DA 7
Table 5: Technical Specifications of the CDA-V50 1:5 High Resolution Video DA 7
i
1 Introduction
Congratulations on purchasing your CDA-V31 1:3 Audio-Stereo / Video DA
and/or CDA-V50 1:5 High Resolution Video DA, which are ideal for
duplication and other studio applications, as well as professional presentation
and display systems. The package includes the following items:
CDA-V31 or CDA-V50
Power adapter (12V DC input) and this user manual
2 Getting Started
We recommend that you:
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
Review the contents of this user manual
3 Overview
The following sections describe the:
CDA-V31 1:3 Audio-Stereo / Video DA, which accepts one audio input and
one video input, provides correct buffering and isolation and distributes
these signals to three identical audio and video outputs (see section 4.1)
CDA-V50 1:5 High Resolution Video DA, which accepts one video input
and distributes it to five identical outputs (see section 4.2)
To achieve the best performance:
Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noiselevels (often associated with low quality cables)
Avoid interference from neighboring electrical appliances and position your
machines away from moisture, excessive sunlight and dust
Caution – No operator-serviceable parts inside unit.
Warning – Use only the input power wall adapter that is
provided with this unit.
Warning – Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.
1
4 Your CDA-V31 and CDA-V50
This section describes the:
CDA-V31 1:3 Audio-Stereo / Video DA, see section 4.1
CDA-V50 1:5 High Resolution Video DA, see section 4.2
4.1 Your CDA-V31 1:3 Audio-Stereo / Video DA
The CDA-V31 is a compact distribution amplifier for composite video and
unbalanced stereo audio signals. It will take one input, provide correct
buffering and isolation, and distribute the signal to three identical outputs.
The CDA-V31:
Has a high video bandwidth of 415MHz to ensure transparent operation
even in the most critical applications
Uses RCA connectors for composite video, and 3.5mm mini jack
connectors for the unbalanced stereo audio
Includes audio and video level (gain) controls
Figure 1 and Table 1 define the CDA-V31 1:3 Audio-Stereo / Video DA:
Figure 1: CDA-V31 Audio-Stereo / Video DA
2
Table 1: Features and Functions of the CDA-V31 Audio-Stereo / Video DA
# Feature Function
1 OUT 1 RCA Connector Connects to the video acceptor 1
VIDEO
2 OUT 2 RCA Connector Connects to the video acceptor 2
3
4 OUT 1 Mini Phone Connector Connects to the unbalanced stereo audio acceptor 1
AUDIO
5 OUT 2 Mini Phone Connector Connects to the unbalanced stereo audio acceptor 2
6
7 12V DC +12V DC connector for powering the unit
8 LEFT Trimmer1 Adjusts the left channel audio gain
AUDIO
LEVEL
9
10 AUDIO IN Mini Phone Connector Connects to the unbalanced stereo audio source
11 VIDEO LEVEL Trimmer Adjusts the gain of the video outputs
12 VIDEO IN RCA Connector Connects to the video source
13 ON LED Illuminates when the machine is powered
OUT 3 RCA Connector Connects to the video acceptor 3
OUT 3 Mini Phone Connector Connects to the unbalanced stereo audio acceptor 3
RIGHT Trimmer1 Adjusts the right channel audio gain
4.2 Your CDA-V50 1:5 High Resolution Video DA
The CDA-V50 is a high performance distribution amplifier for composite
video signals on BNC connectors. It accepts one input, provides correct
buffering and isolation and distributes the signal to five identical outputs.
The CDA-V50:
Has a bandwidth of 400MHz to ensure transparent operation even in the
most critical applications
Includes video level (Gain) control
Figure 2 and Table 2 define the CDA-V50 1:5 High Resolution Video DA:
Figure 2: CDA-V50 1:5 High Resolution Video DA
1 Insert a screwdriver into the small hole and carefully rotate it to adjust the audio level
3
Table 2: Features and Functions of the CDA-V50 1:5 High Resolution Video DA
# Feature Function
1 INPUT BNC Connector Connects to the composite video source
2 OUT BNC Connectors Connect to the composite video acceptor (from 1 to 5)
3 ON LED Illuminates when the machine is powered
4 12V DC +12V DC connector for powering the unit
Figure 3 and Table 3 define the CDA-V50 underside panel:
Figure 3: CDA-V50 1:5 High Resolution Video DA Underside Panel
Table 3: Features and Functions of the CDA-V50 Underside Panel
Feature Function
VIDEO LEVEL Trimmer1 Controls the gain of the video outputs
5 Connecting the CDA-V31 and CDA-V50
This section describes how to connect the:
CDA-V31 1:3 Audio-Stereo / Video DA, see section 5.1
CDA-V50 1:5 High Resolution Video DA, see section 5.2
1 Insert a screwdriver into the small hole and carefully rotate it to adjust the audio level
4
5.1 Connecting the CDA-V31 1:3 Audio-Stereo / Video DA
To connect the CDA-V31 1:3 Audio-Stereo / Video DA, as the example in
Figure 4 illustrates, connect the following1:
1. Connect a composite video source (for example, a video player) to the
video and audio input connectors.
2. Connect the video and audio output connectors to up to 3 composite video
acceptors (for example, video recorders).
3. Connect the 12V DC power adapter to the power socket and connect the
adapter to the mains electricity (not illustrated in Figure 4).
4. If required, adjust the audio level and video level.
Figure 4: Connecting the CDA-V31 1:3 Audio-Stereo / Video DA
1 Switch OFF the power on each device before connecting it to your CDA-V31. After connecting your CDA-V31, switch on
its power and then switch on the power on each device
5
5.2 Connecting the CDA-V50 1:5 High Resolution Video DA
To connect the CDA-V50 1:5 High Resolution Video DA, as the example in
Figure 5 illustrates, connect the following1:
1. Connect a composite video source (for example, a composite video
player) to the INPUT BNC connector.
2. Connect the video output connectors to up to 5 composite video acceptors
(for example, composite video recorders).
3. Connect the 12V DC power adapter to the power socket and connect the
adapter to the mains electricity (not illustrated Figure 5).
4. If required, adjust the video level.
Figure 5: Connecting the CDA-V50 1:5 High Resolution Video DA
1 Switch OFF the power on each device before connecting it to your CDA-SV50. After conn ecting your CD A-SV50, switch
on its power and then switch on the power on each device
6
6 Technical Specifications
This section defines the technical specifications1 for the:
CDA-V31 1:3 Audio-Stereo / Video DA (see Table 4)
CDA-V50 1:5 High Resolution Video DA (see Table 5)
Table 4: Technical Specifications of the CDA-V31 1:3 Audio-Stereo / Video DA
INPUT: 1 composite video, 1Vpp/75 on an RCA connector
OUTPUTS: 3 composite video, 1Vpp/75 on RCA connectors
MAX. OUTPUT LEVEL: VIDEO: 2Vpp AUDIO: 5Vpp
VIDEO BANDWIDTH (-3dB): 415MHz
AUDIO BANDWIDTH (-3dB): >100kHz
DIFF. GAIN: 0.05%
DIFF. PHASE: 0.03 Deg
K-FACTOR: <0.05%
VIDEO S/N RATIO: 73dB
AUDIO S/N RATIO: 84dB Unweighted
CROSSTALK: -70dB @20kHz
CONTROLS: Video level: -2.6dB to 5.9dB; audio level: 0dB to 5.9dB
COUPLING: VIDEO: AC AUDIO: AC
AUDIO THD+NOISE: 0.01%
AUDIO 2nd HARMONIC: 0.003%
POWER SOURCE: 12 VDC, 50mA
DIMENSIONS: 12.1cm x 7.18cm x 2.42cm (4.76” x 2.83” x 0.95”, W, D, H.)
WEIGHT: 0.28kg. (0.62 lbs.) approx.
ACCESSORIES: Power supply, mounting bracket
1 audio stereo, 1Vpp/33 k on 3.5-mm mini phone connector
3 audio stereo, 1Vpp/50 on 3.5mm mini phone connectors
Table 5: Technical Specifications of the CDA-V50 1:5 High Resolution Video DA
INPUT: 1 video, 1Vpp/75 on a BNC connector
OUTPUTS: 5 video, 1Vpp/75 on BNC connectors
MAX. VIDEO OUTPUT: 1.5Vpp
VIDEO BANDWIDTH (-3dB): 400MHz
DIFF. GAIN: 0.05%
DIFF. PHASE: 0.09 Deg
K-FACTOR: <0.05%
S/N RATIO: 72dB
CONTROL: Level: -2dB to +5.6dB
COUPLING: AC
POWER SOURCE: 12 VDC, 35mA
DIMENSIONS: 12.1cm x 7.18cm x 2.42cm (4.76” x 2.83” x 0.95”, W, D, H.)
WEIGHT: 0.3kg. (0.6 lbs.) approx.
ACCESSORIES: Power supply, mounting bracket
1 Specifications are subject to change without notice
7
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