Black Box AC451A User Manual

CUSTOMER

SUPPORT

INFORMATION

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SEPTEMBER 1993

AC451A

Computertop TV-I

Computertop TV-I

2

Computertop TV-I

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 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 édicté par Industrie Canada.

TRADEMARKS

Apple Desktop Bus™is a trademark of Apple Computer, Inc.
AppleScript™is a trademark of Apple Computer, Inc.
Macintosh®is a registered trademark of Apple Computer, Inc.
MPW®is a registered trademark of Apple Computer, Inc.
MultiFinder®is a registered trademark of Apple Computer, Inc.
System 7™is a trademark of Apple Computer, Inc.
CNN is a registered trademark of Cable News Network Inc.
HyperCard®is a registered trademark of Claris Corporation.
RCA®is a registered trademark of General Electric Co.
IBM®is a registered trademark of IBM Corporation.
Excel™is a trademark of Microsoft Corporation.
Windows™is a trademark of Microsoft Corporation.

Any other trademarks mentioned in this manual are acknowledged to be the property
of the trademark owners.

3

Computertop TV-I

1. Specifications.........................................................................................4

2. Introduction ..........................................................................................5

2.1 Overview........................................................................................5

2.2 Requirements ...............................................................................5

2.3 Package Contents .........................................................................5

3. Installation .............................................................................................6

3.1 Attaching the Television Input....................................................6

3.2 Connecting Your Computer to the Computertop TV-I.............6

3.3 Video and Audio Output .............................................................6

3.4 Attaching the AC Power Adapter ................................................7

3.5 Loading Software .........................................................................8

4. Operation.............................................................................................10

4.1 Getting Started ...........................................................................10

4.2 Storing Channel Names.............................................................11

4.3 Channel Selection by Name ......................................................11

4.4 Preferences File ..........................................................................11

4.5 Keyboard Equivalents.................................................................11

4.6 Macintosh Menus .......................................................................12

4.7 AppleEvent Support...................................................................13

4.8 XCMDs........................................................................................17

Table of Contents

4

Computertop TV-I

System Requirements — Any Macintosh with an ADB Port

Any PC-compatible computer with Windows

Input — 75Ω, F-Connector

VHF: Channels 2-13
UHF: Channels 14-69
CATV: Channels A 2-65

Video Output — NTSC Video: SN 2 Vp-p, 47dB

Audio Output — SN 0.5 Vp-p, 40dB

Power Consumption — 1.8 watts

Power Adapter — Input: 120V, 150mA, 60Hz

Output: 15VDC, 300 mA

Storage Temperature — 14 to 122°F (-10 to +50°C)

Humidity — 80% non-condensing

Maximum Altitude — 15,000 feet (4572 m)

Size — 1.8"H x 7.0"W x 4.5"D (4.6 x 17.8 x 11.4 cm)

Shipping Weight — 6 lb. (2.7 kg)

1. Specifications

5

Computertop TV-I

2.1 Overview

Computertop TV-I is a stand-alone
television tuner that can be
controlled by either a Macintosh

®

or an IBM®compatible computer
with Windows™. Computertop TV-I
accepts television broadcast signals
via an external antenna or cable TV.
It generates composite video and
mono audio output. Video and
audio can be routed to any
computer-based video digitizer
or directly to a monitor and
audio amplifier.

Computertop TV-I software provides
a remote-control interface for
selecting and storing channels.
When the software is running
under Macintosh System 7™or
later, AppleEvents are supported.
HyperCard®XCMDs for Macintosh
are also supported.

2.2 Requirements

Macintosh: System 6.x or later;
Macintosh SE or newer.

Windows: Any PC Computer
compatible with Windows 3.x.; Serial
Port (Com1, Com2, Com3, Com4).

Compatibility: Any device that takes
standard NTSC composite input.
Any Audio Digitizer that takes Line
Level Audio Input.

2.3 Package Contents

1. Computertop TV-I unit.

2. Mini-DIN-4-to-mini-DIN-4 ADB
cable (for use with Macintosh).

3. Mini-DIN8-to-DB25 Cable
(for use with PC compatibles).

4. RCA®to RCA video cable.

5. AC power adapter.

6. Diskette with Computertop TV-I
operating software.

7. This manual.

You need to supply:

1. Antenna or cable television.

2. Audio cable (see Section 3.3).

2. Introduction

6

Computertop TV-I

Before installing the Computertop
TV-I, make sure that your computer
is off.

3.1 Attaching the Television Input

The AERIAL IN jack is a standard F­type antenna jack. The Computertop
TV-I accepts either cable or antenna
input.

3.2 Connecting Your Computer
to the Computertop TV-I

M

ACINTOSHUSERONLY

The ADB Input/Output ports are
Apple Desktop Bus™Mini-DIN-4
connectors—the same connectors
on your keyboard and Macintosh.

Warning

Shut down the Macintosh
before connecting or
disconnecting ADB cables.

If you have a free ADB port on the
Macintosh: Connect the supplied
ADB cable to the free ADB port on
your Macintosh and to either ADB
port on the Computertop TV-I.

If you do not have a free ADB port
on the Macintosh: Disconnect your
ADB cable from the Macintosh and
attach it to either ADB port on the
Computertop TV-I. Your keyboard
is now attached to the Computertop

TV-I. Connect the supplied ADB
cable to the other ADB port on the
rear panel of the Computertop TV-I.
Connect the other end to your
Macintosh. Whatever you type on
your keyboard will pass through
the Computertop TV-I to your
Macintosh.

W

INDOWSUSERONLY

The PC COMM PORT connector on
the Computertop TV-I is a Mini-DIN­8 connector. Connect one end of
the supplied Mini-DIN-8-to-DB25
cable to the PC COMM PORT
connector on the Computertop TV-I
and the other to either Com Port 1
or 2 on your PC. If your computer
has DIP switch-selectable ports, use
the computer instruction manual to
set the DIP switch.

NOTE: The serial port of some computers

may require a Null Modem Adapter.

3.3 Video and Audio Output

V

IDEO

The Video Output can be routed to
any device that accepts composite
video. If you are using a video
digitizer, use the supplied composite
video cable to connect the VIDEO
OUT jack on the tuner to the
composite input jack on the
digitizer. If you are using another
device, you will need to supply the
appropriate cable.

3. Installation