Black Box AC320A User Manual

CUSTOMER

SUPPORT

INFORMATION

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OCTOBER 1993

AC320A

VGA to Video—Portable Plus

VGA TO VIDEO-

PORTABLE PLUS

VIDEO

VGA OUT

VGA IN

POWER

DC 9V IN

_

+

S-VHS

1

VGA TO VIDEO—PORTABLE PLUS

FEDERAL COMMUNICATIONS COMMISSION

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 B
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 necessary 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 B 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 édicté par Industrie Canada.

TRADEMARKS

MS-DOS®is a registered trademark of Microsoft Corporation.

RCA®is a registered trademark of General Electric Co.

Windows™is a trademark of Microsoft Corporation.

IBM®is a registered trademark of IBM Corporation.

SideKick

®

is a registered trademark of Inprise Corporation.

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

2

VGA TO VIDEO—PORTABLE PLUS

Contents

Chapter Page

1. Specifications ....................................................................................... 3

2. Introduction ........................................................................................ 4

2.1 Introduction to Video Standards .............................................. 4

2.2 Hotkeys and TSR Programs....................................................... 5

2.3 VGA to Video—Portable Plus ................................................... 5

2.4 The Complete Package.............................................................. 6

3. Installation ........................................................................................... 8

3.1 Hardware Installation ................................................................ 8

3.2 Software Installation .................................................................. 9

3.3 Hotkey Control ..........................................................................11

3.4 Screen Movement ......................................................................11

3.5 Command Functions .................................................................12

3.6 Installation Tips .........................................................................13

4. Troubleshooting..................................................................................14

Appendix: Enhancing Your Presentation with VGA to Video ..............15

3

CHAPTER 1: Specifications

1. Specifications

Outputs —

• Output 1: Pass-through for local
monitor, HD15S

• Output 2: Composite, NTSC,
color; RCA®phone jack, cable
supplied; 1 V P-to-P; Horz
Freq—15.7 KHz;
Vert Freq—60.0 Hz

Display Speed — Real time

Drivers — Windows™3.1

Compatibility — Compatible with

windowing boards (IBM

®

M-Motion, etc.)

Connectors — (2) DB15

Power — 9 VDC, 500 mA

Size — 5.5"H x 4"W x 1"D

(14 x 10.2 x 2.5 cm)

Weight — 1.5 lb. (0.7 kg)

System Requirements — PC or

compatible with VGA card,
MS-DOS®3.0 or higher, 640K
memory or larger

Input Frequency — 0.7 V peak to

peak

Resolution — all standard VGA

modes up to 640x480

Inputs —

• Analog RGB signal from
notebook PC

• HD15 pin connector, cable
supplied

• 0.7 V P-to-P

• Horizontal frequency: 31.5 KHz

• Vertical frequency: 70.0 Hz

• Resolution up to 640 x 480,
32,768 colors

4

VGA TO VIDEO—PORTABLE PLUS

2. Introduction

2.1 Introduction to Video Standards

The VGA to Video—Portable Plus
takes your computer’s VGA video
signals and turns them into standard
television signals.

2.1.1 T

ELEVISION

Most video systems use AV
composite signal or S-Video signal to
carry image data. The standard in
the U.S. is NTSC, named for the
National Television Standard
Committee, the organization that
specified the television standard
used in North America and several
other countries. The NTSC
standard uses 525 lines, 60 frames
per second, and 2 frames per field.

The VGA to Video—Portable Plus
gives you the capability to display
computer-generated text and images
on large television displays without
the hassle and expense of extra
monitors. Even the novice can
record computer generated
presentations or animations to video
tape.

You can use the unit in the home
or office for business or pleasure. At
the office, the VGA to Video—
Portable Plus is great for presenting
graphs, spreadsheets, training
sessions, and business presentations.
At home, the VGA to Video—
Portable Plus is perfect for
displaying computer games on a
large TV screen. The VGA to
Video—Portable Plus is the ultimate
link to video for the DOS or
Windows user.

5

CHAPTER 2: Introduction

2.1.2 VGA

VGA, the primary display device
supported by PCs is by far the best
display media on the low-end PC
graphics market. It possesses gray­level capabilities and circuits for
displaying real-world images instead
of artificial computer graphics. The
standard VGA can be operated in
320 x 200 resolution, 256 colors/64
gray scale and 640 x 480 resolution,
256 colors.

VGA Compared to TV:

• Horizontal frequency

- VGA: 31.5 KHz

- TV: 15.7 KHz

• Vertical frequency

- VGA: 70.0 KHz

- TV: 60.0 KHz

• Interlace vs. Non-Interlace

- VGA: Non-Interlace

- TV: Interlace

You can see from the information
above that the image quality of VGA
is superior to TV quality.

2.2 Hotkeys and TSR Programs

Programs such as SideKick®or DOS
graphic execution files are executed
and kept in a PC’s RAM or Random
Access Memory. This means once
they are activated, they are stored in
memory for instant use when
needed. This type of program is
called a TSR (Terminate and Stay
Resident) Program. A TSR allows
you to activate the program with a
hotkey. A hotkey is a sequence of
keystrokes or combination of
keystrokes that when touched
activate the program.

The VGA to TV—Portable Plus
provides a TSR program. Once the
program is installed, you can bring
up the display switch functions by
pressing the predefined hotkey.

2.3 VGA to Video—Portable Plus

The VGA to Video—Portable Plus
works as an interface between the
VGA signals of your PC and the
video signal that your TV accepts.
The VGA to Video—Portable Plus
converts the VGA signal to standard
TV (NTSC) signal. The VGA to
Video—Portable Plus consists of two
parts:

• VGA to Video—Portable Plus
Encoder Box

• VGA to Video—Portable Plus
“flicfree” software