Black Box AC043A Bedienungsanleitung

CUSTOMER

SUPPORT

INFORMATION

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FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

JULY 1993

AC043A

AC044A

S-Video Splitter-8

Composite Splitter-8

OUTPUT

COMPOSITE Splitter-8

AGC

OFF

GAIN

CAL

GREEN=

UNITYGAIN

OUTPUT

S-Video

Splitter-8

AGC

OFF

GAIN

CAL

GREEN=

UNITYGAIN

FCC AND IC STATEMENTS, TRADEMARKS

FEDERAL COMMUNICATIONS COMMISSION

AND

INDUSTRY CANADA

RADIO FREQUENCY INTERFERENCE STATEMENT

This equipment generates, uses, and can radiate radio frequency energy

and if not installed and used properly, that is, in strict accordance with the

manufacturer’s instructions, may cause interference to radio communication.

It has been tested and found to comply with the limits for a Class A

computing device in accordance with the specifications in Subpart J of Part 15

of FCC Rules, which are designed to provide reasonable protection against

such interference when the equipment is operated in a commercial

environment. Operation of this equipment in a residential area is likely to

cause interference, in which case the user at his own expense will be required

to take whatever measures may be required to correct the interference.

Changes or modifications not expressly approved by the party responsible

for compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for Radio noise emission from

digital apparatus set out in the Radio Interference Regulation of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par Industrie Canada.

TRADEMARKS

All applied-for and registered trademarks are the property of their respective owners.

VIDEO SPLITTERS

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes

de que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para

referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones

de operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo,

cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca,

etc..

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales

que sean recomendados por el fabricante.

7. El aparato eléctrico debe ser montado a la pared o al techo sólo como

sea recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más

allá a lo descrito en las instrucciones de operación. Todo otro servicio

deberá ser referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama,

sofá, alfombra o superficie similar puede bloquea la ventilación, no se

debe colocar en libreros o gabinetes que impidan el flujo de aire por los

orificios de ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de

calor como radiadores, registros de calor, estufas u otros aparatos

(incluyendo amplificadores) que producen calor.

NOM STATEMENT

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo

del tipo descrito en el instructivo de operación, o como se indique en

el aparato.

12. Precaución debe ser tomada de tal manera que la tierra fisica y la

polarización del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que

no sean pisados ni pellizcados por objetos colocados sobre o contra ellos,

poniendo particular atención a los contactos y receptáculos donde salen

del aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos

de las lineas de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo

no sea usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del

aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio

en su desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

VIDEO SPLITTERS

Bandwidth — >30 MHz

Rise/Fall times — <10 ns

Connectors — AC043A: 4-Pin Mini-DIN (Female)

AC044A: BNC (Female)

Inputs (1) — Impedance: 75 ohms Y, C

Level: 0 to 1.5 V PP (0 to 210 IRE)

Gain: -6 to +6 db or unity or automatic unity

ref. from pedestal to 100 IRE white.

AGC requires >10 µs IRE white per

field (VIR/VIT signal). Manual gain

has "CAL" detect. LED is green

when Gain = Unity.

Diff. Gain: <0.50%

Diff. Phase: <0.6

Outputs (8) — Impedance:

AC043A: 75 ohms Y, C

AC044A: 75 ohms

Level Max.: >1.8 V PP into 75 ohms

Adjust w/

Gain Control: (Y) 0.714 V PP (100 IRE) Video Out

for <0.5 V (70 IRE) to >1.4 V PP

(196 IRE) Input

DC Restoration: Switchable: Pedestal or Sync

TIP = 0 VDC with ± 1 V offset

on input

Propagation Delay — <10 ns

Size — Width: 7.0" (17.8 cm)

Height: 1.7" (4.2 cm)

Depth: AC043A: 5.5" (14.0 cm)

AC044A: 6.5" (16.5 cm)

Weight — 1 lb. (0.5 kg); Shipping weight: 3 lb. (1.4 kg)

Power — 9 VDC, 1 A, 105- to 130-VAC or 220-VAC plug-

mounted transformer

1. Specifications

Specifications are the same for the S-Video Splitter-8 (AC043A)

and Composite Splitter-8 (AC044A) unless specifically noted.

CHAPTER 2: Introduction

The S-Video Splitter-8 (AC043A)

and Composite Splitter-8 (AC044A)

distribute a video signal from one

source to many video displays. Each

unit features DC Restoration and

Fixed, Manual and Automatic

Gain Controls.

The SVHS Splitter-8 is a 30-MHz

S-Video (Y/C) Distribution

Amplifier for S-VHS, Hi-8,

ED-BETA, and other video

applications that use 4-pin

mini-DIN connectors.

The Composite Splitter-8 is a

30-MHz Composite Video

Distribution Amplifier with

BNC connectors.

Features include:

• 30-MHz bandwidth

• 8 outputs from a single input

• Automatic gain

• Manual gain control

• Unity gain

• Table-top or rack mounting

Your complete package will have

the following:

• The Video Splitter unit.

• 9 VDC, 1 A plug-mounted

transformer

• User Manual

2. Introduction

AGC

S-VIDEO

DISTRIBUTION

AMPLIFIER

OUTPUT

OFF

GAIN

CAL

GREEN =

UNITY GAIN

Figure 1. Front panel of the Video Splitter

(AC044 shown here).

VIDEO SPLITTERSVIDEO SPLITTERS

The procedure to install either the

S-Video Splitter-8 (AC043A) or the

Composite Splitter-8 (AC044A) is

the same unless specifically noted.

3.1 Preparation

Place your Video Splitter on a flat

surface. For a permanent instal-

lation, you may want to use a

rackmount tray (RM001 or RM002).

You can place up to two (2) units

side by side on the tray.

In a table top installation, a mini-

mum of 3 inches is required behind

the unit in order to connect the

input signal and the output signals

to your monitor.

With multiple video outputs, you

may want to consider placing the

your Video Splitter as close as

possible to the video monitors

in order to conserve wire. It is

important that the video cables

meet your local safety and

community building codes.

3.2 Input Signal Connection

Using the appropriate cable,

connect your video source to

the back-panel connector labeled

“INPUT.”

• AC043 uses the S-Video cable with

4 pin mini-DIN connectors. When

installing the cables, be sure that

the small pins in the mini-DIN

connector are not bent or

damaged prior to inserting

them into the jack on your Video

Splitter. Align the cable connector

with the plastic key down.

• AC044 uses standard video cable

(ETN59) with BNC connectors.

When installing the cables, be

sure that the BNC cable connector

has been turned clockwise to its

locking position.

3. Installation

Figure 2. 4-pin mini-DIN

connector (female)

Plastic Key

will fit into

this hole only

CHAPTER 3: Installation

3.3 Monitor(s) Connection

Make sure your video monitor(s)

or recording device(s) meets your

local safety and community building

codes. Using the appropriate cable,

connect your monitor(s) to the rear-

or front-panel connectors on your

Video Splitter that are marked

“OUTPUT.” Connect the other end

of the cable(s) to your monitor(s).

Some monitors are only equipped

with RCA inputs. In these cases

you will need a BNC to male RCA

adapter.

NOTE: Outputs 1 through 6 are located on

the rear of the unit, while outputs

7 and 8 are located on the front. The

front output connections are ideal

for temporary hookup of additional

video displays or recorders.

3.4 Power Connection

To connect your Video Splitter to

an AC power source, first uncoil

the wire attached to the power cube.

Connect the single plug into the

power input jack located on the back

of your Video Splitter. Next, plug

the power cube into a standard AC

power receptacle (105 to 130 VAC).

Check to see if the power indicator

on the front of your Video Splitter

is illuminated.

Figure 3. Back panel of the Video Splitter

(AC043 shown here).

123456 INPUT

SYNC TP

DC RESTORE/

CLAMP POWER

9VDC

BLACK

OUTPUT

VIDEO SPLITTERSVIDEO SPLITTERS

4.1 Operation

The operation of the Video Splitter

unit is relatively simple. All connected

output devices (Monitors, Recorders,

etc.) will see the same signal as the

input source. No selection of outputs

is possible.

UTOMATIC AND

DJUSTABLE

AIN

When the front-panel Automatic

Gain Control (AGC) switch is set

to ON, turn the adjustable gain

counterclockwise to the left until

it clicks into place by the CAL

indicator. The Video splitter will

provide unity gain to each output.

This will be confirmed by the front-

panel LED being green.

When the AGC switch is set to the

OFF position, gain is manually

controlled by the adjustable front-

panel knob. The front-panel LED

will turn red. The output gain can

be adjusted from -6dB to +6dB. The

front-panel LED changes from red

to green to indicate unity gain.

DC R

ESTORE

LAMP

The DC restore/clamp switch is

located on the back-panel of your

Video Splitter. Set this switch in

the position which yields the

best picture.

For most applications, the switch will

be set in the “BLACK” position (up).

In this position, the output video is

clamped at 0 VDC (see Figure 4).

With the switch in the “SYNC TIP”

position (down), the sync signal

is raised above ground (0 VDC)

(see Figure 5). On some monitors

this will result in a brighter picture.

4. Operation, Troubleshooting

and Maintenance

0 VDC

SYNC

VIDEO

Figure 4. Video output clamped at 0 VDC.

CHAPTER 4: Operation, Troubleshooting, and Maintenance

OWER

NDICATOR

The front-panel LED will be lit

whenever the Video Splitter is

being supplied with AC power.

4.2 Troubleshooting

If no power is indicated: Check

the AC source and the power cord

connection on the back panel of

the unit.

If the monitor(s) will not display the

video source image: Check to make

sure that the video source is on and

that it is properly connected to the

Video Splitter. Also make sure

that the monitor(s) are properly

connected to the Video Splitter.

4.3 Maintenance

The AC043 and AC044 Video

Splitters are designed and manu-

factured to the highest degree of

quality. There are no user-service-

able components inside of the

Video Splitter. We recommend

that the unit be returned for repairs.

0 VDC SYNC

VIDEO

Figure 5. Sync raised above ground.

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