Remote-processing RPC-330 Manual de usuario descargar pdf (Pagina 18)

RAM MEMORY SECTION 5

Page 5-1 RPC-330

Figure 5-1 RAM and W1 jumper location

J2 from card

3 Tx Out

4 RTS In

5 RXD In

6 CTS Out

9 Ground

10 +5

INTRODUCTION

32K, 128K, or 512K of RAM may be battery backed on

the RPC-330. RAM size may be changed at any time.

RAM is in socket U5.

RAM is backed up when a DS1216DM is installed.

Battery life depends upon RAM size, its power

consumption, ambient temperature, and amount of time

the board is operating. Generally, a battery life of about

3 to 5 years can be expected. Operating the board at

50°C reduces battery life by 1/2.

The DS1216DM is also a real time clock. Thus, DATE

and TIM E function s and com mands a re available when it

is installed. See SECTION 7 for related information.

This section discusses changing RAM, saving and

retrieving variables, running assembly language

programs, and battery condition. Figure 5-1 shows the

location of U3 and jumper W1.

Increasing RAM size does not necessarily increase the

program size RPBASIC-52 can handle. Maximum

program and variable size is 60K. Additional RAM does

increase the amount of space available for PEEK and

POKE storage.

CHANGING MEMORY

Different types of memory can be installed at any time.

RPC-330 models come with either 32K or 128K of RAM

installed. Up to 512K can be installed.

To change a memory chip, you need to rem ove the

original chip, install the new one, and set jumper W1.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 47 48

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Jvc AV-14JT5EU User Manual (29 pages)

Brand: Jvc | Category: LCD TVs | Size: 0.43 MB |

AV-14JT5EU

AV-21JT5EU

CONTENTS

IMPORTANT SAFEGUARDS

BEFORE LAUNCHING

VIDEO AUDIO

LOCAL CONTROL

REMOTE CONTROL

Auto setup

INSTALLATION

Manual tuneu

Fine tune

Manual tune

C50 Pr01

DAILY USE

VCR DVD VCR DVD

MENU MENU

TELETEXT

TROUBLESHOOTING

Item AV-14JT5EU AV-21JT5EU

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