Extron Electronics VSC 500, VSC 700, VSC 700D User Manual

VSC 500/700/700D

Video Scan Converters

User Guide

Scan Converters

68-633-01 Rev. D

03 11

Safety Instructions • English

This symbol is intended to alert the user of important operating and mainte­nance (servicing) instructions in the literature provided with the equipment.

This symbol is intended to alert the user of the presence of uninsulated
dangerous voltage within the product’s enclosure that may present a risk of
electric shock.

Caution

Read Instructions • Read and understand all safety and operating instructions before using the equipment.
Retain Instructions • The safety instructions should be kept for future reference.
Follow Warnings • Follow all warnings and instructions marked on the equipment or in the user information.
Avoid Attachments • Do not use tools or attachments that are not recommended by the equipment

manufacturer because they may be hazardous.

Warning

Power sources • This equipment should be operated only from the power source indicated on the product. This

equipment is intended to be used with a main power system with a grounded (neutral) conductor. The third
(grounding) pin is a safety feature, do not attempt to bypass or disable it.

Power disconnection • To remove power from the equipment safely, remove all power cords from the rear of

the equipment, or the desktop power module (if detachable), or from the power source receptacle (wall plug).

Power cord protection • Power cords should be routed so that they are not likely to be stepped on or pinched

by items placed upon or against them.

Servicing • Refer all servicing to qualified service personnel. There are no user-serviceable parts inside. To prevent

the risk of shock, do not attempt to service this equipment yourself because opening or removing covers may
expose you to dangerous voltage or other hazards.

Slots and openings • If the equipment has slots or holes in the enclosure, these are provided to prevent

overheating of sensitive components inside. These openings must never be blocked by other objects.

Lithium battery • There is a danger of explosion if battery is incorrectly replaced. Replace it only with the

same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer’s instructions.

Consignes de Sécurité • Français

Ce symbole sert à avertir l’utilisateur que la documentation fournie avec le
matériel contient des instructions importantes concernant l’exploitation et la
maintenance (réparation).

Ce symbole sert à avertir l’utilisateur de la présence dans le boîtier
de l’appareil de tensions dangereuses non isolées posant des risques
d’électrocution.

Attention

Lire les instructions• Prendre connaissance de toutes les consignes de sécurité et d’exploitation avant

d’utiliser le matériel.

Conserver les instructions• Ranger les consignes de sécurité afin de pouvoir les consulter à l’avenir.
Respecter les avertissements • Observer tous les avertissements et consignes marqués sur le matériel ou

présentés dans la documentation utilisateur.

Eviter les pièces de fixation • Ne pas utiliser de pièces de fixation ni d’outils non recommandés par le

fabricant du matériel car cela risquerait de poser certains dangers.

Sicherheitsanleitungen • Deutsch

Dieses Symbol soll dem Benutzer in der im Lieferumfang enthaltenen
Dokumentation besonders wichtige Hinweise zur Bedienung und Wartung
(Instandhaltung) geben.

Dieses Symbol soll den Benutzer darauf aufmerksam machen, daß im Inneren
des Gehäuses dieses Produktes gefährliche Spannungen, die nicht isoliert sind
und die einen elektrischen Schock verursachen können, herrschen.

Achtung

Lesen der Anleitungen • Bevor Sie das Gerät zum ersten Mal verwenden, sollten Sie alle Sicherheits-und

Bedienungsanleitungen genau durchlesen und verstehen.

Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit des Produktes sollten Sie

aufbewahren, damit Sie im Bedarfsfall darauf zurückgreifen können.

Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und Anleitungen auf dem Gerät oder in der

Benutzerdokumentation.

Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte, die nicht ausdrücklich vom

Hersteller empfohlen wurden, da diese eine Gefahrenquelle darstellen können.

Avertissement

Alimentations • Ne faire fonctionner ce matériel qu’avec la source d’alimentation indiquée sur l’appareil. Ce

matériel doit être utilisé avec une alimentation principale comportant un fil de terre (neutre). Le troisième
contact (de mise à la terre) constitue un dispositif de sécurité : n’essayez pas de la contourner ni de la
désactiver.

Déconnexion de l’alimentation• Pour mettre le matériel hors tension sans danger, déconnectez tous les

cordons d’alimentation de l’arrière de l’appareil ou du module d’alimentation de bureau (s’il est amovible) ou
encore de la prise secteur.

Protection du cordon d’alimentation • Acheminer les cordons d’alimentation de manière à ce que personne

ne risque de marcher dessus et à ce qu’ils ne soient pas écrasés ou pincés par des objets.

Réparation-maintenance • Faire exécuter toutes les interventions de réparation-maintenance par un

technicien qualifié. Aucun des éléments internes ne peut être réparé par l’utilisateur. Afin d’éviter tout danger
d’électrocution, l’utilisateur ne doit pas essayer de procéder lui-même à ces opérations car l’ouverture ou le
retrait des couvercles risquent de l’exposer à de hautes tensions et autres dangers.

Fentes et orifices • Si le boîtier de l’appareil comporte des fentes ou des orifices, ceux-ci servent à empêcher les

composants internes sensibles de surchauffer. Ces ouvertures ne doivent jamais être bloquées par des objets.

Lithium Batterie • Il a danger d’explosion s’ll y a remplacment incorrect de la batterie. Remplacer uniquement

avec une batterie du meme type ou d’un ype equivalent recommande par le constructeur. Mettre au reut les
batteries usagees conformement aux instructions du fabricant.

Vorsicht

Stromquellen • Dieses Gerät sollte nur über die auf dem Produkt angegebene Stromquelle betrieben werden.

Dieses Gerät wurde für eine Verwendung mit einer Hauptstromleitung mit einem geerdeten (neutralen) Leiter
konzipiert. Der dritte Kontakt ist für einen Erdanschluß, und stellt eine Sicherheitsfunktion dar. Diese sollte nicht
umgangen oder außer Betrieb gesetzt werden.

Stromunterbrechung • Um das Gerät auf sichere Weise vom Netz zu trennen, sollten Sie alle Netzkabel aus der

Rückseite des Gerätes, aus der externen Stomversorgung (falls dies möglich ist) oder aus der Wandsteckdose

ziehen.

Schutz des Netzkabels • Netzkabel sollten stets so verlegt werden, daß sie nicht im Weg liegen und niemand

darauf treten kann oder Objekte darauf- oder unmittelbar dagegengestellt werden können.

Wartung • Alle Wartungsmaßnahmen sollten nur von qualiziertem Servicepersonal durchgeführt werden.

Die internen Komponenten des Gerätes sind wartungsfrei. Zur Vermeidung eines elektrischen Schocks
versuchen Sie in keinem Fall, dieses Gerät selbst öffnen, da beim Entfernen der Abdeckungen die Gefahr eines
elektrischen Schlags und/oder andere Gefahren bestehen.

Schlitze und Öffnungen • Wenn das Gerät Schlitze oder Löcher im Gehäuse aufweist, dienen diese zur

Vermeidung einer Überhitzung der empndlichen Teile im Inneren. Diese Öffnungen dürfen niemals von

anderen Objekten blockiert werden.

Litium-Batterie • Explosionsgefahr, falls die Batterie nicht richtig ersetzt wird. Ersetzen Sie verbrauchte Batterien

nur durch den gleichen oder einen vergleichbaren Batterietyp, der auch vom Hersteller empfohlen wird.
Entsorgen Sie verbrauchte Batterien bitte gemäß den Herstelleranweisungen.

Instrucciones de seguridad • Español

Este símbolo se utiliza para advertir al usuario sobre instrucciones impor­tantes de operación y mantenimiento (o cambio de partes) que se desean
destacar en el contenido de la documentación suministrada con los equipos.

Este símbolo se utiliza para advertir al usuario sobre la presencia de elemen­tos con voltaje peligroso sin protección aislante, que puedan encontrarse
dentro de la caja o alojamiento del producto, y que puedan representar
riesgo de electrocución.

Precaucion

Leer las instrucciones • Leer y analizar todas las instrucciones de operación y seguridad, antes de usar el

equipo.

Conservar las instrucciones • Conservar las instrucciones de seguridad para futura consulta.
Obedecer las advertencias • Todas las advertencias e instrucciones marcadas en el equipo o en la

documentación del usuario, deben ser obedecidas.

Evitar el uso de accesorios • No usar herramientas o accesorios que no sean especificamente

recomendados por el fabricante, ya que podrian implicar riesgos.

安全须知 • 中文

这个符号提示用户该设备用户手册中有重要的操作和维护说明。

这个符号警告用户该设备机壳内有暴露的危险电压，有触电危险。

注意

阅读说明书 • 用户使 用该设备前必须阅读并理 解所有安全和 使用说明。
保存说明书 • 用 户应保存安全说明书以备将来使用。
遵守警告 • 用户应遵守产品和用户指南上的所有安 全和操作说明。
避免追加 • 不要使 用该产品厂商没有推荐的工具或追加设备，以避免危险。

Advertencia

Alimentación eléctrica • Este equipo debe conectarse únicamente a la fuente/tipo de alimentación eléctrica

indicada en el mismo. La alimentación eléctrica de este equipo debe provenir de un sistema de distribución
general con conductor neutro a tierra. La tercera pata (puesta a tierra) es una medida de seguridad, no
puentearia ni eliminaria.

Desconexión de alimentación eléctrica • Para desconectar con seguridad la acometida de alimentación

eléctrica al equipo, desenchufar todos los cables de alimentación en el panel trasero del equipo, o desenchufar
el módulo de alimentación (si fuera independiente), o desenchufar el cable del receptáculo de la pared.

Protección del cables de alimentación • Los cables de alimentación eléctrica se deben instalar en lugares

donde no sean pisados ni apretados por objetos que se puedan apoyar sobre ellos.

Reparaciones/mantenimiento • Solicitar siempre los servicios técnicos de personal calicado. En el interior no

hay partes a las que el usuario deba acceder. Para evitar riesgo de electrocución, no intentar personalmente la
reparación/mantenimiento de este equipo, ya que al abrir o extraer las tapas puede quedar expuesto a voltajes
peligrosos u otros riesgos.

Ranuras y aberturas • Si el equipo posee ranuras o orificios en su caja/alojamiento, es para evitar el

sobrecalientamiento de componentes internos sensibles. Estas aberturas nunca se deben obstruir con otros

objetos.

Batería de litio • Existe riesgo de explosión si esta batería se coloca en la posición incorrecta. Cambiar esta

batería únicamente con el mismo tipo (o su equivalente) recomendado por el fabricante. Desachar las baterías

usadas siguiendo las instrucciones del fabricante.

警告

电源 • 该设备只能使用产品上标明的电源。 设备必须使用有地线的供电系统供电。 第三条线（

地线）是安全设施，不能不用或跳过 。

拔掉电源 • 为安全 地从设备拔掉电源，请拔掉所有设备后或桌面电源的电源线，或任何接到市电

系统的电源 线。

电源线保护 • 妥善布线， 避免被踩踏，或重物挤压。
维护 • 所有维修必须由认证的维修人员进行。 设备内部没有用户可以更换的零件。为避免出现触

电危险不 要自己试图打开 设备盖子维修 该设备。

通风孔 • 有些设备机壳上有通风槽或孔，它们是用来防止机内敏感元件过 热。 不要用任何 东西

挡住通风孔。

锂电池 • 不正确的更换电池会有爆炸的危险。必须使 用与厂家推荐的相同或相近型号的电池。按

照生产厂的建议处理废弃电 池。

ii

FCC Class A Notice

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received, including interference that may cause undesired operation.

The Class A limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and,
if not installed and used in accordance with the instruction manual, may cause harmful interference to radio commu­nications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the
user will be required to correct the interference at his own expense.

NOTE: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used with

the unit to ensure compliance with FCC emissions limits.

For more information on safety guidelines, regulatory compliances, EMI/EMF compliance, accessibility, and

related topics, click here.

VSC 500/700/700D User Guide • FCC Statement iii

Conventions Used in this Guide

In this user guide, the following are used:

NOTE: A note draws attention to important information.

TIP: A tip provides a suggestion to make working with the application easier.

CAUTION: A caution indicates a potential hazard to equipment or data.

WARNING: A warning warns of things or actions that might cause injury, death, or

other severe consequences.

Commands are written in the fonts shown here:

^AR Merge Scene,,Op1 scene 1,1 ^B 51 ^W^C

[01] R 0004 00300 00400 00800 00600 [02] 35 [17] [03]

E X! *X1&* X2)* X2#* X2!

CE

}

NOTE: For commands and examples of computer or device responses mentioned in

this guide, the character “0” is used for the number zero and “O” repre­sents the capital letter “o.”

Computer responses and directory paths that do not have variables are written in the font
shown here:

Reply from 208.132.180.48: bytes=32 times=2ms TTL=32

C:\Program Files\Extron

Variables are written in slanted form as shown here:

ping xxx.xxx.xxx.xxx —t

SOH R Data STX Command ETB ETX

Selectable items, such as menu names, menu options, buttons, tabs, and field names are
written in the font shown here:

From the File menu, select New.

Click the OK button.

Copyright

© 2011 Extron Electronics. All rights reserved.

Trademarks

All trademarks mentioned in this guide are the properties of their respective owners.

VSC 500/700/700D User Guide • Conventions iv

Contents

Introduction............................................................ 1

About the VSC 500/700/700D ............................ 1

Features .............................................................. 1

Application Example ........................................... 2

Rear Panel Connectors and Cabling .................... 3

Genlock and Vertical Interval Switching

(VSC 700 and 700D only) .................................. 5

Genlock Setup ................................................ 5

Oscilloscope Displays ....................................... 7

Optimizing the System ........................................ 8

Front Panel Features .......................................... 9

Menus, Configuration, and Adjustments ........... 10

Moving Through Menus by Using Front

Panel Controls ............................................. 10

Menu Overview ............................................ 11

Auto-Imaging Menu (Auto Set) ..................... 12

Output Configuration Menu

(Output Config) ........................................... 13

Filters Menu (Filters) ...................................... 14

Zoom Menu (Zoom) ...................................... 15

Genlock Menu (Genlock) .............................. 15

Exit Menu (Exit Menu) ................................... 16

Additional Functions ......................................... 16

Size Function ................................................ 16

Shift Function ............................................... 17

Freeze Mode ................................................. 17

Unit Reset Function ....................................... 18

Front Panel Security Lockout

(Executive Mode) ......................................... 18

Troubleshooting ................................................ 18

VSC Infrared Remote Control ............................ 20

Function SIS Commands: VSC 700/700D Only.. 25

Command and Response Table for Special

Function SIS commands: VSC 500/700/700D ... 26

Control Software for Windows ......................... 26

Installing the Program ................................... 26

Using the Control Program ............................ 27

Firmware Upgrade from the Extron Website ...... 28

Downloading the Latest Firmware to the PC.. 28
Uploading the firmware from the PC to the

VSC ............................................................ 29

Reference Information ...................................... 30

Specifications: VSC 500 .................................... 30

Specifications: VSC 700 and 700D .................... 31

Included Parts ................................................... 34

Accessories ....................................................... 34

Firmware Upgrade Chip Installation .................. 35

Mounting the VSC ........................................... 36

Tabletop or Desktop Placement ..................... 37

Rack Mounting ............................................. 37

Serial Communication ........................................ 21

RS-232 Programming Guide .............................. 22

Host-to-VSC Communications ....................... 22

Video Scan Converter-initiated Messages ...... 22

Error Responses............................................. 23

Using the Command and Response Tables .... 23

Command and Response Table for SIS

Commands: VSC 500/700/700D ...................... 24

Command and Response Table for SIS

Commands: VSC 700/700D Only ..................... 25

Command and Response Table for Special

VSC 500/700/700D User Guide • Contents v

VSC 500/700/700D User Guide • Contents vi

Introduction

About the VSC 500/700/700D

The Extron VSC 500, 700, and 700D are computer-to-video scan converters that can convert
computer images up to 1920 x 1200 for output as composite video, S-video, component
video, SDI (VSC 700D), and/or RGB video. Applications include videoconferencing, video
recording, and viewing of images on an NTSC or PAL monitor or other display device.

Key features include automatic setup of centering and sizing controls, horizontal filtering, an
LCD window for user-friendly menu selections, memory presets (IR remote control feature),
and a buffered loop-through for local monitor output. The VSCs can be controlled via the
front panel, the optional IR remote control, or RS-232 commands.

Features

• Autoscanning — Automatically recognizes and down converts the incoming computer

image, up to 1920 x 1200 resolution and 100 kHz horizontal and 120 Hz vertical scan
rates.

• Input — Via a 15-pin HD female VGA connector (VSC 500) or BNC connectors (VSC

700/700D).

• Outputs — Simultaneously outputs RGB or component video, composite video, S-video,

and SDI (VSC 700D).

• Memory presets — Recall up to eight user presets that can be stored and accessed via

the optional IR remote.

• Auto-Image™ setup — Automatic sizing and centering function to fill the output

display screen.

• Centering and sizing and controls — Allow for user-friendly positioning and sizing of

the image on-screen.

• Freeze/Reset button — The freeze function locks the output display to the current

image.

• Front panel security lockout — Locks out all front panel functions except centering

(shifting) to prevent accidental changes to adjustments.

• RS-232 remote control — An RS-232/RS-422 control port utilizes the Extron Simple

Instruction Set (SIS™) of basic ASCII commands.

• Genlocking (VSC 700 and VSC 700D only) — Allows for the synchronizing of multiple

input devices to a common external timing signal so that the switch between input
devices will be clean.

• Horizontal filtering — Four selectable horizontal filters prevent aliasing or pixel

elimination so that less detail is dropped when the image is scanned from left to right.

• Buffered loop-through — Provides a local monitor output, enabling the computer

input signal to be monitored without the need for a separate distribution amplifier.

VSC 500/700/700D User Guide • Introduction 1

Installation and
Operation

Application Example

The illustration below is one example of using the VSC 500.

Extron
VSC Remote

Handheld IR
Remote Control,
Optional

B/B-YG/YR/R-Y

VID

V

H

OUTPUTS

BUFFERED

LOOP-THROUGH

0.3A

RGB INPUT

INPUTS

100-240V

Extron
VSC 500

Scan Converter

50/60 Hz

TouchLink

Control
System

™

ON

F
F
O

L
DISP
UT
M

SCRE
P
U

SCRE
W
DO

R
C
V

DVD

C
DO
M
A
C

P

O
T
P
A
L

C
P

AY
E

EN

EN
N

TCP/IP

®

100
Y
A

K

L

N

E
R

LI

T

T

AC

PU

3

IN

1

IR

31

4

M

3

O

C

2

X

R

1

4

0

TX

5
2

2

IPL

1

4

2

2

R

RS-232

/422

S-VIDEO

RS-232

3

PC

Figure 1. VSC 500 Application Example

VSC 500/700/700D User Guide • Installation and Operation 2

Videoconferencing
System

VCR/DVD

Rear Panel Connectors and Cabling

100-240V 0.3A

BUFFERED

LOOP-THROUGH

3a

OUTPUTSINPUTS

4

50/60 Hz

RGB INPUT

1

2a

Figure 2. VSC 500 Rear Panel Connectors

2b

H/HVGB

100-240V 0.3A

50/60 Hz

1

R

RGB

3b

V

OUTPUTSINPUTS

4

Figure 3. VSC 700 Rear Panel Connectors

2b

H/HVGB

100-240V 0.3A

R

V

B/B-YG/YR/R-Y

S-VIDEO

VIDH/HV V

5

B/B-YG/YR/R-Y

S-VIDEO

VIDH/HV VH/HV V

5

RS-232

/422

6

7

IN

OUT

GENLOCK

8

6

RS-232

/422

7

9

IN

SDIB/B-YG/YR/R-Y

S-VIDEO

RGB

50/60 Hz

1

Figure 4. VSC 700D Rear Panel Connectors

3b

4

VIDH/HV VH/HV V

OUTPUTSINPUTS

5

OUT

RS-232

GENLOCK

/422

8

6

7

NOTE: RGB, component video, composite video, S-video, and SDI video (VSC 700D

only) are output simultaneously.

a AC power connector — Plug a standard IEC power cord into this connector to

connect the scan converter to a 100 to 240 VAC, 50 Hz or 60 Hz power source.

b

a. RGB (computer) input VGA connector — Connect a computer video source

(RGBHV, RGBS, RGsB) via this female VGA 15-pin connector.

TIP: D connector. Pins 4, 10, and 11 are internally grounded for ID bit termination.

VSC 500/700/700D User Guide • Installation and Operation 3

b. RGB (computer) input BNC connectors — Connect a computer video source

51

(RGBHV, RGBS, RGsB) via these five female BNC connectors. Connect cables for the
appropriate signal type, as shown here.

R

GB

H/HV

V

R

GB

H/HV

V

RGBHV

R

G

RGsB

B

RGBS

H/HV

V

c

a. Buffered loop-through VGA connector — For local monitor output of the input,

connect a monitor to this female VGA 15-pin HD connector.

b. Buffered loop-through BNC connectors — For local monitor output of the

input, connect a monitor to these five female BNC connectors. Connect cables for
the appropriate signal type as shown in É above.

d Output BNC connectors — Connect coaxial cables from a display device to these five

female BNC connectors for RGBHV, RGBS, RGsB, or component video output, as follows:

HV

OUTPUTS

RGBHV

V

H

RGsB

B/B-YG/YR/R-Y

H

RGBS

B/B-YG/YR/R-Y

H

R-Y, Y, B-Y

B/B-YG/YR/R-Y

V

OUTPUTS

B/B-YG/YR/R-Y

V

e Composite video output connector — Using a coaxial cable, connect a composite

video display device to this female BNC connector.

f S-video output connector — Connect an S-video output device to this female 4-pin

mini DIN connector.

g RS-232/RS-422 port — This connector provides for two-way RS-232/RS-422

communication. See “Serial Communication”, for information on how to install and
use the control software and SIS commands.

The default protocol is 9600 baud, 1 stop bit, no parity, and no flow control.

The rear panel RS-232/RS-422, 9-pin connector has the following
pin assignments:

Pin RS-232 function Description

1 No connection

2 Tx Transmit data

3 Rx Receive data

4 Tx 2 Transmit data

5 Gnd Signal ground

6 No connection

7 No connection

8 Rx 2 Receive data

9 No connection

96

DB9 Pin Locations

Female

VSC 500/700/700D User Guide • Installation and Operation 4

Pin RS-422 function Description

1 No connection

2 Tx- Transmit ground

3 Rx- Receive ground

4 No connection

5 Gnd Signal ground

6 No connection

7 Rx+ Receive data

8 Tx + Transmit data

9 No connection

h Genlock input and output connectors — Connect an external blackburst signal to

the input (In) female BNC connector for genlocking the video signal in broadcast or
other sync-critical applications.

Connect any downstream equipment, which requires genlocking, to the output (Out)

female BNC connector to route the blackburst signal throughout the system in broadcast
or other sync-critical applications. See Genlock and Vertical Interval Switching.

i SDI (serial digital interface) connector — Connect an SDI signal to this female BNC

connector.

Genlock and Vertical Interval Switching (VSC 700 and 700D only)

For vertical interval switching (to allow clean switching between signals from several devices
during the vertical blanking period of each signal), a composite sync signal can be applied at
the Genlock In connector, and it can also be passed to another device via the Genlock Out
connector.

If the genlock connectors are used only for vertical interval switching, no horizontal or
subcarrier phase adjustments are required.

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 horizontal signal 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 vectorscope 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 results in incorrect colors or
picture artifacts.

To synchronize the video output of the VSC with a genlock signal, follow these steps:

NOTE: 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.

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.

2. Connect the active timing source signal to the Genlock In connector on the rear panel.

VSC 500/700/700D User Guide • Installation and Operation 5

3. Connect the video input signals to the VSC, as described previously in this section.

4. Connect the oscilloscope (“scope”) probe A to the Genlock Out connector. This will

provide the reference signal of the scope. 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 genlock output of the VSC.

Timing Source

OUT

100-240V 0.3A

50/60 Hz

75 ohm Terminator

R

RGB

To Scope

Probe B

H/HVGB

V

OUTPUTSINPUTS

IN

SDIB/B-YG/YR/R-Y

S-VIDEO

VIDH/HV VH/HV V

OUT

GENLOCK

RS-232

/422

75 ohm Terminator

To Scope

Probe A

5. Connect scope probe B to the composite video output connector (VID) of the VSC.

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 composite output of the VSC as
shown in the previous diagram.

6. Using the instructions for the scope you are using, set the scope to view the horizontal

phases of the signal. Adjust the horizontal phase by rotating the Adjust horizontal
([) knob (see the “Genlock Menu” section in this chapter). Adjust the horizontal
phase until there is no (0°) difference between the composite video output’s horizontal
sync phase and the genlock signal’s horizontal phase. See the “Oscilloscope Displays”
section.

7. Set the scope to view the subcarrier signals. Adjust the sub phase by rotating the Adjust

vertical ({) knob until there is a zero phase difference between the genlock signal and
the NTSC/PAL output (see the “Genlock Menu” section).

8. View the horizontal phases again. If the phase difference is not zero, repeat steps 6 and

7 until the settings do not change.

9. Once the settings are stable, disconnect the oscilloscope, and reconnect the genlock

cables.

10. Check the displays for proper colors and for undesirable artifacts in the images. Make

adjustments as necessary.

11. If other VSCs are part of this genlock daisy chain, connect the oscilloscope to each

device, and repeat this procedure.

VSC 500/700/700D User Guide • Installation and Operation 6

Oscilloscope Displays

What you see on the oscilloscope while adjusting the VSC to match the genlock signal
depends on the type of signal used, the type of oscilloscope, and the procedure the scope
requires. This section shows some examples of oscilloscope displays.

The following diagram shows the genlock input signal (top) and an out-of-alignment NTSC
composite sync output signal (bottom) displayed on a waveform monitor to check for
alignment. When the phases are aligned, the wave peaks on the bottom waveform should
line up with those in the reference signal above it.

Figure 5. Superimposed Waveforms

Genlock Input
Signal

NTSC Composite
Output Signal

With this method there is no way to know if the signals are 180º out of phase. A delayed
sweep on a time-based scope would allow a more accurate display of the input and output
signal phase relationships.

A vectorscope is more accurate than a waveform monitor. The following diagram shows an
example of a vectorscope display when the horizontal phase is adjusted to align it with the
burst (genlock) vector. Adjust the horizontal phase by rotating the Adjust horizontal
([) knob until the difference between the two vectors is 0º. This example shows black burst
only (with no color). The burst vector is pointing to the left from the center.

0

10

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

Figure 6. Vectorscope Screen During Horizontal

Phase Adjustment

VSC 500/700/700D User Guide • Installation and Operation 7

The following diagram shows an example of a view of a vectorscope during adjustment of
the color subcarrier phase (SC/H). The subcarrier phase should be aligned to 0º (indicated in
the figure by the triangle.

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

A1

A2

A3

B1

B2

B3

+40

-40

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

Figure 7. Vectorscope Screen During Color Subcarrier

Phase Adjustment

Optimizing the System

For optimal performance, follow the steps in this section in order when setting up the VSC
and its input and output devices.

Select the output standard

From the Video standard submenu, select the output standard (see the Video standard

submenu section).

Size the image to fill the screen

1. Size and center the displayed image to fill the output screen (see the Auto-Imaging

2. Press the Size button on the front panel (see the Front Panel Features section).

3. Rotate the horizontal and vertical adjustment knobs to resize the displayed image.

4. Press the Size button again to turn the size feature off.

5. Center the picture by rotating the horizontal and vertical adjustment knobs. Observe the

6. Repeat steps 1 through 5 as needed.

• NTSC (default)

• PAL

Menu section).

Observe the picture on screen as you adjust the controls. The Min/Max LED will light red
whenever the minimum or maximum limit of an adjustment knob is reached.

picture on screen as you adjust the controls. The Min/Max LED will light red whenever
the minimum or maximum limit of an adjustment knob is reached.

VSC 500/700/700D User Guide • Installation and Operation 8