Comprehensive Video CVG-606xl, CVG-808xl User Manual

CVG-606xl

6x6 Video/Audio Matrix Switcher

CVG-808xl

8x8 Video/Audio Matrix Switcher

USER MANUAL

CONTENTS

1 INTRODUCTION 3

1.1 A Word on Video/Audio Switchers 3

1.2 Factors Affecting Quality of Results 3

2 SPECIFICATIONS 4

3 HOW DO I GET STARTED? 4

4 UNPACKING AND CONTENTS 5

4.1 Optional Accessories 5

5 GETTING TO KNOW YOUR MATRIX SWITCHER 5

5.1 Your CVG-606xl Matrix Switcher 5

5.2 Features of the CVG-606xl Matrix Switcher 5

6 INSTALLATION 8

6.1 Rack Mounting 8

7 CONNECTING TO VIDEO DEVICES 8

8 CONNECTING TO AUDIO DEVICES 8

9 USING THE MACHINES 8

9.1 Powering on the Machine 8

9.2 Using the Front Panel Controls 8

9.2.1 Selecting an Output 8

9.2.2 Selecting an Input 9

Connecting a Video/Audio Input/Output 9

9.2.3

9.2.4 Disconnecting a Video/Audio Input 9

9.2.5 Connecting a Video/Audio Input to All Outputs 9

9.2.6

9.2.7 Using the Audio Follow Video Mode 9

9.2.8 Storing a Configuration 9

9.2.9

9.2.10 Deleting a Setup 9

9.2.11 Using the Take Function 9

9.2.12 Resetting the Machine 9

9.3 Using the Back Panel Controls 9

9.3.1 Selecting the Sync Source 10

9.3.2 Setting the Configuration Switches 10

9.4 RS-232 and RS-485 Operation 10

Selecting Video/Audio Control (Breakaway) 9

Recalling a Configuration 9

10 TYPICAL APPLICATIONS 12

10.1 Basic Video-Audio Setup 12

10.2 Component Switching using Multiple Matrix Switchers 12

10.2.1 RGB/YUV Switching with RS-232 (e.g. PC Control) 13

RGB/YUV Switching with RS-485 Control (or no External Control) 13

10.2.2

11 TAKING CARE OF YOUR MATRIX SWITCHER 13

1

12 TROUBLESHOOTING 14

12.1 Power and Indicators 14

12.2 Video Signal 14

12.3 Audio Signal 15

12.4 Control 15

12.5 Switching Malfunctions 16

13 COMMUNICATION PROTOCOL 16

FIGURES

FIGURE 1: CVG-606XL FRONT/REAR PANEL FEATURES 6
FIGURE 2: DIP SWITCHES GENERAL VIEW 10
FIGURE 3: RS-232 CONTROL CONNECTOR WIRING 11

FIGURE 4: RS-232 AND RS-485 OPERATION 11
FIGURE 5: TERMINATING THE LINE 11
FIGURE 6: BASIC VIDEO-AUDIO SETUP 12

TABLES

TABLE 1: CVG-606XL FRONT PANEL FEATURES 6
TABLE 2: CVG-606XL REAR PANEL FEATURES 7

2

INTRODUCTION

1

Congratulations on purchasing your Matrix Switcher. This user manual describes the following products:

CVG-606xl

CVG-808xl

1.1 A Word on Video/Audio Switchers

A video/audio switcher usually switches between several sources (inputs) and one or more acceptors (outputs).
A switcher that allows several inputs to be connected to several outputs simultaneously is called a Matrix
Switcher. Switchers may be of the electronic or mechanical type. Most matrices are of the active electronic type,
with many crosspoints. Vertical Interval Switching, frequently used in video, ensures that the transition from
one video source to another (such as switching between two genlocked cameras) is smooth and without
interference. The switching and changeover is done during the blanked vertical interval period, when the
transition is hidden from the eyes. Vertical Interval Switching is needed when recording or transmitting a video
program involving several video sources, as in live broadcast, to ensure clean, undisturbed picture transitions.
The switched sources should be genlocked. Matrices and switchers may sometimes be RS-232 or RS-485/422
controlled. Each of these options is a way of remotely controlling a video/audio device (switcher etc.) using a
PC with a serial port, or another device that uses a similar communication protocol. The simplest connection
between the RS-232 controller and the controlled device uses two wires (TRANSMIT, RECEIVE) and a
common ground wire. Finally, the wide video bandwidth permits the Matrix Switchers to be used in the most
demanding applications.

1.2 Factors Affecting Quality of Results

There are many factors affecting the quality of results when signals are transmitted from a source to an acceptor:

 Connection cables

to poor matching and cause elevated noise levels. They should therefore be of the best quality.



Sockets and connectors of the sources and acceptors

quality, since "Zero Ohm" connection resistance is the target. Sockets and connectors also must match
the required impedance (75ohm in video). Cheap, low quality connectors tend to rust, thus causing
breaks in the signal path.

 Amplifying circuitry

distortion and low noise operation.



Distance between sources and acceptors

(over 15 meters) between sources and acceptors, special measures should be taken in order to avoid cable
losses. These include using higher quality cables or adding line amplifiers.



Interference from neighboring electrical appliances

quality. Balanced audio lines are less prone to interference, but unbalanced audio should be installed far
from any mains power cables, electric motors, transmitters, etc. even when the cables are shielded.

- Low quality cables are susceptible to interference, they degrade signal quality due

- So often ignored, they should be of highest

- Must have quality performance when the desired end result is high linearity, low

- Plays a major role in the final result. For long distances

- These can have an adverse effect on signal

3

SPECIFICATIONS

2

CVG-606XL CVG-808XL

Configuration
Input Type

Input
Connections
Input Level

Output Type

Output
Connector
Output Level

Video S/N
Ratio
Audio S/N
Ratio
Video
Bandwidth
Audio
Bandwidth
Differential
Gain
Differential
Phase
K-Factor
Non Linearity
Video
Crosstalk
THD
2nd Harmonic
Switch System
Control Type

Power
Consumption
Weight
Dimensions
(H x W x D)
Power Source

6x6 8x8
6 composite video,
1 sync/video genlock with
sync select switch,
6 stereo audio
Video: BNC connectors
Audio: RCA connectors
Composite video:
1Vpp/75ohm,
Sync/video genlock:
1Vpp/75ohm
Audio: +4dBm/62kohm
6 composite video
6 audio stereo
Video: BNC connectors,
Audio: RCA connectors
Composite video:
1Vpp/75ohm
Audio: +4dBm/50ohm
(27Vpp max.)
74dB 74dB

88dB unweighted, (1Vpp) 88dB unweighted, (1Vpp)

Exceeding 200MHz Exceeding 200MHz

Exceeding 100kHz Exceeding 100kHz

0.05% 0.05%

0.03Deg. 0.03Deg.

<0.05% <0.05%
<0.1% <0.1%
<-50dB @ 5MHz <-50dB @ 5MHz

0.016% (1V, 1KHz) 0.016% (1V, 1KHz)

0.004% 0.004%
Vertical interval Vertical interval
Manual, RS-232 or

RS-485
11VA 11VA

3.4 kg (7.5lbs.) Approx. 3.5 kg (7.8lbs.) Approx.
19" x 7" x 2U 19" x 7" x 2U

230VAC, 50/60 Hz,
(115VAC, U.S.A.)

8 composite video,
1 sync/video genlock with
sync select switch,
8 stereo audio
Video: BNC connectors
Audio: RCA connectors
Composite video:
1Vpp/75ohm,
Sync/video genlock:
1Vpp/75ohm
Audio: +4dBm/33kohm
8 composite video
8 audio stereo
Video: BNC connectors,
Audio: RCA connectors
Composite video:
1Vpp/75ohm
Audio: +4dBm/50ohm
(24Vpp max.)

Manual, RS-232 or RS-485

230VAC, 50/60 Hz,
(115VAC, U.S.A.)

3 HOW DO I GET STARTED?

The fastest way to get started is to take your time and do everything right the first time. Taking 15 minutes to
read the manual may save you a few hours later. You don’t even have to read the whole manual - if a certain
section doesn’t apply to you, you don’t have to spend your time reading it.

4

UNPACKING AND CONTENTS

4

The items contained in your CVG accessory package are listed below. Please save the original box and
packaging materials for possible future transportation and shipment of the machine.

 Matrix Switcher
 CD with Control software
 AC Power Cable
 User Manual
 Null Modem Adapter Connector
 4 Rubber Feet

4.1 Optional Accessories

The following accessories, which are available from CVG, can enhance implementation of your machine. For
information regarding cables and additional accessories, contact your CVG dealer.

 BNC "Y" Connector - Used for looping purposes and splits the incoming signal to enable connection of

an additional machine.

 CVG-KR10D - (Composite-YC Comb Filter/Transcoder) can be serially connected to a Matrix Switcher

for video format conversion (between two popular video formats - composite video and YC (Super-Video).
The decoding from composite to Y/C is done digitally using an adaptive comb filter and DSP techniques to
minimize dot-crawl and cross-color. A built-in vertical enhancer circuit reduces noise and dot-crawl on the Y
signal. In addition, the

CVG-KR10D

directional operation. The CVG-KR10D is very small in size, and is fed from an external 12VDC supply,
thus ideal for fieldwork.

provides an independent Y/C to Composite route, for simultaneous bi-

5 GETTING TO KNOW YOUR MATRIX SWITCHER

Most front/rear panel features of the Matrix Switchers described in this manual are very similar. Therefore, only
the CVG-606xl is described and it represents the rest of the Matrix Switchers.

5.1 Your CVG-606xl Matrix Switcher

The CVG-606xl is a broadcast quality, 6x6 Vertical Interval - Audio Stereo Matrix Switcher for composite
video and stereo audio signals. They are true matrices, allowing the user to route any input to any or all outputs
simultaneously. Since they switch during the vertical interval, transitions are glitch-free when sources share
common reference sync. They can switch stereo audio signals in "audio-follow-video" mode or separately
(breakaway). Also, the TAKE button allows the user to place multiple switches in a queue, and then activate
them with one touch of this button or a single serial command. They have manual, RS-232 and RS-485
controls. Six preset memory locations are provided for quick access to common configurations, and the non­volatile memory "remembers" the last setting prior to being powered-down. The machines have an external
Sync/Genlock input as well, and may be programmed to switch according to the timing of either this input or of
source number 1. Windows 95/NT (TM) control software is provided free with the machine.

The machines are dependable, rugged, and fit in two vertical spaces of a standard 19” rack. Video bandwidth of
200MHz ensures that the CVG-606xl and CVG-808xl remain transparent even in the most critical applications

5.2 Features of the CVG

Front/Rear panel features of the CVG
Table 2.

-606xl and

For operation instructions refer to section 9.

CVG

606xl are shown in Figure 1. The features are described in Table 1 and

-

Matrix Switchers

-808xl

NOTE

5