Radio Shack RS-4000 Determining Your VEHICLE’S Door Switch Power Type, Type B Switch Test

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49-840in.fm Page 8 Thursday, August 19, 1999 10:47 AM

Type B Switch Test

Use the meter or test light to find a point on the fuse block that pro- vides a constant source of +12 volts. Touch one lead to that point on the fuse block, and the other lead to one of the control wires. Operate your power door locks.

If the light turns on or the volt meter indicates 12 volts when you move the door lock switch to the LOCK position, you have located a Type B Lock control wire. Test the other wire.

If the light turns on or the volt meter indicates 12 volts when you move the door lock switch to the UNLOCK position, you have located a Type B Unlock control wire. Test the other wire (if you have not already done so).

If both wires are Type B control wires, go to Step 3.

Failed All Tests

If you could not determine the power door lock type, call 1-800- 598-2527 for assistance.

3.Use masking tape to mark each control wire with its function (LOCK or UNLOCK) and type (A, B, or C).

DETERMINING YOUR VEHICLE’S DOOR SWITCH POWER TYPE

For your alarm system’s passive arm- ing and anti-carjacking features to work, you must connect the alarm to the door switch power lead. Follow these steps to determine the door switch power type.

1.Use your vehicle’s service man- ual, contact your vehicle manu- facturer, or contact the Auto Alarm Helpline at 1-800-598- 2527 to determine where to access the control wire(s) for your vehicle’s door switch. This wire might also be called a door trigger and is usually behind a panel near or on the door.

Notes:

•Some vehicles have logic- controlled dome and courtesy lights that turn on differently depending on which vehicle door is opened. Be sure to locate a wire that is triggered from all your vehicle’s doors.

•If your dome light dims slowly when you close the door, your alarm might have problems determining when the door is opened or closed. Contact 1- 800-598-2527 if this is the case with your vehicle.

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Need Help? Call 1-800-598-2527

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Contents RS-4000 Auto Security Alarm System Installation ManualIntroduction Time ChecklistAfter you complete this section Estimated Contents Before YOU Begin the Installation Status Indicator with Bracket and GrommetUsing Wire Piercing Probe Adapters Installation Determining Your VEHICLE’S Power Door Lock TypeType C Switch Test Type a Switch TestFailed All Tests Determining Your VEHICLE’S Door Switch Power TypeType B Switch Test Finding the Starter Wire Finding Your VEHICLE’S Parking Lights Wire Finding Constant and Ignition Power Using Wire TAP-INSInstalling the Status Indicator Mounting the Main ModuleMounting and Connecting the Siren Mounting and Connecting the ANTI- Carjacking Switch Connecting to PowerConnecting the Starter Disable Module Connecting to Power Door Locks Connecting to the Door SwitchConnecting Additional Sensors Connecting to the Parking LightsCompleting Installation Connecting Accessory DevicesSpecifications Volts Max Volts Min Source mA Load mA, MaxMaster Wiring Diagram 49-840in.fm Page 19 Thursday, August 19, 1999 1047 AM RadioShack Division of Tandy Corporation Fort Worth, Texas

RS-4000 specifications

The Radio Shack RS-4000 is an iconic piece of technology that embodies the spirit of innovation in the consumer electronics industry during the late 20th century. Launched in the 1980s, this personal computer made a significant impact on the home computing landscape, appealing to hobbyists, educators, and early computer enthusiasts alike.

One of the standout features of the RS-4000 was its affordability, which made technology accessible to a broader audience. The computer was powered by a Zilog Z80 microprocessor, a popular choice at the time due to its reliable performance and efficiency. With a clock speed of 4 MHz, the RS-4000 provided basic computing capabilities that were sufficient for word processing, simple programming, and educational software.

The RS-4000 came with 64 KB of RAM, expandable up to 256 KB, allowing users to enhance the system’s performance as their needs grew. For data storage, the computer utilized an external cassette tape interface, which was a common method for saving and loading programs during that period. This tape system was ultimately replaced as technology progressed, but it represented a significant step forward in personal computing.

Another notable aspect of the Radio Shack RS-4000 was its comprehensive range of input and output options. The machine featured basic keyboard input, a built-in speaker for sound output, and compatibility with various peripherals, including printers and modems. Additionally, it provided both video output to standard television sets and the option for users to connect external monitors, bringing versatility to the display options.

The RS-4000 supported a variety of programming languages, including BASIC, which allowed users to delve into programming and develop their software applications. This capability contributed to the rise of a generation of computer coders and technology enthusiasts who would go on to shape the digital future.

In summary, the Radio Shack RS-4000 was more than just a computer; it was a catalyst for creativity and innovation during the formative years of personal computing. With its user-friendly design, expandability, and a growing library of software, the RS-4000 played a crucial role in helping individuals understand and embrace the digital age. Although technology has advanced significantly since its release, the legacy of the RS-4000 remains in the hearts of those who experienced it, marking a pivotal moment in the evolution of personal computers.
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