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Chapter 8---Software and Protocol

Model 250 Service Manual 8-1

8.0 Software and Protocol

Contents

8.1 Software Updating........................................................................................ 8-1

8.2 Importing/Exporting.....................................................................................8-5

Configuration ............................................................................................. 8-5

Exporting.................................................................................................... 8-6

Importing.................................................................................................... 8-7

Null Modem Adapter ................................................................................. 8-9

8.3 Terminals and Communication Protocol...................................................... 8-10

Terminals.................................................................................................... 8-10

Terminal Preferences.................................................................................. 8-10

Communications Protocol..........................................................................8-11

8.1 Software Updating

The Model 250 software resides in Flash Memory and is updated via the

projector's serial Port A. To perform an update, a disk containing the updated

Boot Software (boot.hex) and/or System Software (zsys.hex) and a PC with

Windows 3.1 (Windows 95/98 with Procomm Plus fax/modem software) is

required to perform update.

Boot Manager Software and System Software are separate products. Each may be

updated independently. The System Software will depend on a specific version of

the Boot Manager. Refer to the System Software release bulletin for Boot

Manager version dependencies.

To perform software upgrade:

1. Verify that the projector circuit breaker is off. Use a Null Modem cable to

connect a PC to the projector’s Serial Port A (Terminal-In).

2. Start Windows 3.1.

3. Click on the terminal icon from the Accessories Directory.

4. From the Terminal menu, select Settings-Terminal Emulation and click on

DEC-VT-100 (ANSI).

Select OK.

5. Under Settings, choose Terminal Preferences.

Under Terminal Preferences the following selections are appropriate;

Terminal Modes=Sound

CR->CR/LF=Both off

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JVC 250 User Manual

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