Extron electronic VSC 150 user manual Genlock setup, Cable connections for genlock setup

Page 13

Installation and Operation, cont’d

If the genlock connectors are used only for vertical interval switching, no horizontal or subcarrier phase adjustments are required, and the Burst Lock LED does not light.

Genlock setup

Genlock differs from simple vertical interval switching in that an external device (a black burst generator) generates a reference sync signal for the system, and every device that uses that signal has its output signal’s horizontal and subcarrier phases adjusted to exactly match that of the generator to allow precise timing and full synchronization. Genlocked systems produce cleaner switches between inputs than do those without this type of synchronization.

An oscilloscope is required for genlock setup, and a vector- scope is recommended. Waveform monitors of types other than a vectorscope may give the appearance that timing is adjusted correctly when it is 180 degrees out of phase, which will result in incorrect colors or picture artifacts.

All equipment in the system must be powered up and turned on for at least 15 to 20 minutes before genlock setup adjustments can be made and before the equipment is used in a genlocked application.

To synchronize the VSC 150’s video output with a genlock signal, follow these steps:

1. Power up and turn on all the devices that will use the genlock signal. The devices must be on for at least 15 to 20 minutes before proceeding with any adjustments.

 

termination adapter to the other “input” connector, or

 

by setting the 75 Ohm DIP switch to On (75 ohms).

 

The Burst Lock LED lights green to indicate that the

 

VSC 150 is receiving an acceptable genlock (black

 

burst) sync signal via the Genlock In connector.

4.

Connect oscilloscope (“scope”) probe A to the Genlock

 

Out connector. This will provide the scope’s reference

 

signal. In order to avoid altering the genlock signal,

 

use the cabling configuration that will be used in the

 

installation. Either connect the genlock signal cable

 

from the scope to the next device in the system to be

 

timed, or provide 75 ohm termination at the scope’s

 

genlock output.

5.

Connect scope probe B to the VSC 150’s composite video

 

output connector. Ensure that the rear panel PAL Out

 

DIP switch is set for the desired standard (NTSC/PAL).

6.

Using the instructions for the scope you are using, set

 

the scope to view the signals’ horizontal phases.

 

Adjust the VSC 150’s Horz Phase control until there is

 

no (0º) difference between the composite video

 

output’s horizontal sync phase and the genlock signal’s

 

horizontal phase. See “Oscillocope displays”.

7.

Set the scope to view the subcarrier signals. Adjust

 

the VSC 150’s Sub Phase control until there is a zero

 

phase difference between the genlock signal and the

 

NTSC/PAL output. The Burst Lock LED should light.

 

 

If the Burst Lock LED does not light at this point,

 

 

 

 

either adjust the horizontal or subcarrier phases

Computer Video

Signal In

100-240 V 0.3A

 

 

I

 

 

 

N

PAL OUT 75 OHM

 

MAC

P

 

 

U

 

 

T

 

 

 

S

 

50/60 Hz

VGA

 

 

 

VIDEO

 

O

 

 

U

 

 

T

 

 

P

S-VIDEO

S-VIDEO

U

 

 

T

 

RGB

S

 

 

 

 

R-Y/B-Y/Y

R/R-Y G/Y

HV

 

OUT

 

Timing Source

 

GENLOCK

B/B-Y

IN

S

OUT RS-232

 

 

 

further, or use a different genlock source.

 

 

The color subcarrier adjustment range is ±90° from

 

 

 

 

0° for a total adjustment range of 180°.

8.

View the horizontal phases again. If the phase

 

difference is not zero, repeat steps 6 and 7 until the

 

settings do not change.

 

To Scope Probe B

To Scope Probe A

 

 

and Termination

Cable connections for genlock setup

2.

Connect the active timing source signal to the

 

Genlock In connector on the rear panel.

3.

Connect the active computer video input signal to the

 

appropriate input as explained in step 2 of the Cabling

 

section on page 2-9. Ensure that the input is properly

 

terminated either by connecting a local monitor or a

 

 

If the Burst Lock LED does not light at all when

 

 

genlock is active and the horizontal and subcarrier

 

 

phases have been adjusted to match the genlock

 

 

signal, do not continue with this procedure. A

 

 

different, more stable or time-base-corrected sync

 

 

signal must be used for the genlock timing source.

9.

Once the settings are stable and the Burst Lock LED

 

lights, disconnect the oscilloscope, and reconnect the

 

genlock cables and terminator to the proper devices in

 

the system.

2-14 VSC 150 • Installation and Operation

VSC 150 • Installation and Operation 2-15

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Page 12 Page 14
Contents Scan Converter User’s ManualExtron’s Warranty PrecautionsFCC Class a Notice Table of Contents One Table of Contents, cont’dIntroduction VSCIntroduction FeaturesAbout this Manual About the VSCTwo Installation and OperationIntroduction, cont’d Installation Overview Installation and OperationTabletop/desktop placement Mounting the VSCInstallation and Operation, cont’d Front Panel Features Rear Panel Features Installation and Operation, cont’dMac-VGA cable local monitor connections CablingVideo output BNC cable connections Connecting genlock cables in a daisy chainTypical VSC 150 system application Mac-HV/VGA cable connector pin assignments Setting Up Genlock Vertical Interval SwitchingVertical interval switching setup VGA 15-pin HD and Mac 15-pin D connector pin locationsCable connections for genlock setup Genlock setupVectorscope screen during horizontal phase adjustment TroubleshootingVectorscope screen during Color subcarrier phase adjustment Oscilloscope displaysIf the image does not display correctly Symptoms Solutions Three Remote ControlRS-232 Remote Control Remote ControlCommand/response table Remote Control, cont’dControl software for Windows IR Remote ControlVSC and DDS Control Program window IR 601 remoteUsing the memory feature Specifications Accessories and Part NumbersAAppendix Specifications Accessories Accessories and Part NumbersIncluded Parts Accessories and Part Numbers, cont’d

VSC 150 specifications

The Extron VSC 150 is a versatile video scaling and conversion device designed for professional audio-visual applications. It is particularly well-suited for environments requiring high-quality image processing and flexible video interfacing. With its array of features and advanced technologies, the VSC 150 stands out as a reliable solution for various AV setups, including classrooms, conference rooms, and large venues.

One of the key features of the VSC 150 is its high-performance video scaling technology. It offers up to 16 different output resolutions, allowing users to adapt video signals to meet the specific needs of different display devices. This flexibility ensures that content is delivered in the optimal resolution for every environment, enhancing the overall viewing experience. The device supports a wide variety of input formats, including composite video, S-video, and component video, ensuring compatibility with legacy equipment as well as contemporary digital sources.

The VSC 150 also incorporates advanced signal processing capabilities. It includes features such as video noise reduction, dynamic range control, and edge enhancement. These technologies work in unison to improve image quality, providing sharp, clear visuals that are critical in professional settings. The built-in image freeze and zoom functions further enhance the user experience, allowing for focused presentations without losing attention.

Another notable characteristic of the VSC 150 is its user-friendly interface. The device features an easy-to-navigate front panel, complete with LED indicators for quick status monitoring. Additionally, it can be controlled remotely via Ethernet or RS-232, providing flexibility in larger setups where direct access may be limited. The integration into control systems is seamless, making it a popular choice for custom AV installations.

In terms of audio capabilities, the VSC 150 can handle both analog and digital audio signals, ensuring that users can maintain high-quality audio alongside video content. It also features audio embedding and de-embedding options, which facilitate integration with various audio systems.

Overall, the Extron VSC 150 is a powerful and sophisticated video scaler that combines excellent performance, robust features, and ease of use. It is an ideal choice for professionals seeking a reliable solution for managing video content in diverse AV environments, effectively meeting the demands of modern presentations and displays. With the VSC 150, users can achieve impressive results, ensuring that their visual communications stand out.
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