E.F. Johnson Company VR-CM50 Manuel de service télécharger pdf (Page 5)

INTRODUCTION

The E.F. Johnson VRCM-50 Distributed Microprocessor Console System represents the state of the art in

modern control center technology. True digital audio, full on-line programming, advanced diagnostics and the

widest range of features available today make the E.F. Johnson VRCM-50 the system of choice for the most

advanced applications. Our completely modular approach to both hardware and software makes the system

affordable for even the most modest systems.

This System Planner describes the VRCM-50 and its features to help you design a console system. It

assumes that you are familiar with the technology and conventions used in industry-standard land mobile radio

systems and that you have defined the basic system requirements such as the number of radio channels and con-

sole positions needed.

HOW THIS PLANNER IS ORGANIZED

The Planner is organized into four sections.

Section 1 includes an overview of the VRCM-50 and outlines a procedure to determine your console equi-

page requirements. A series of detailed questionnaires and data sheets is provided to help you take an inventory of

your system requirements.

Section 2 lists the common Central Processor Package equipment and options. Central Processors are offered

in a number of sizes to meet varying requirements. Most VRCM-50 Central Processors can be field upgraded to

accommodate system expansion.

Section

3 covers CRT consoles using Mouse/Trackball and Touchscreen control. CRT consoles are more cost

effective for larger systems and are preferred where workstation space is at a premium. Most CRT systems use

multiple pages or windows to access various control functions such as paging or auxiliary switch controls. The

VRCM-50 allows screens to be easily customized to meet individual operator preferences and can be changed on-

line with the console in full operation. Samples of CRT modules and screens have been captured for illustration.

Section

4 lists installation and maintenance options such as cables, accessories and spares. The options in this

section apply to both Module and CRT-based console systems.

HOW TO USE THIS PLANNER

In planning a system, it is generally advisable to first size the Central Processor Package and choose the

appropriate system-wide options. Then determine the options needed for each radio channel in the system. Once

the Central Processor is defined, choose the type of consoles desired and pick the options for each console. It

should be noted that Module and CRT based consoles can be intermixed in systems. Lastly, select the installation

and maintenance options needed for your operation.

WHERE TO FIND HELP

E.F. Johnson’s Application Engineers will gladly assist you in planning your console system. Once you have

formulated your requirements, we suggest that you allow us to review your design with you to be sure there are no

accidental oversights and to suggest alternate solutions that may optimize the system and reduce costs.

If your system has special requirements that are not addressed in this Planner, please contact the E. F. Johnson

Marketing Department.

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E.F. Johnson Company VR-CM50 Manuel de service Page 5