VXI Technology, Inc.

FIGURE 1-4:JAVA-BASED GRAPHICAL USER INTERFACE

RELAY DRIVE CONTROL

The EX7000 contains a proprietary circuit board set consisting of a Relay Driver Board (RDB)and LXI LAN Interface Board, which is known as the EX7000-OEM when supplied as a set without an enclosure. They have been designed to provide maximum flexibility for controlling virtually any type of RF/microwave relay or component. Each RDB provides 72 high-current drivers, which are divided into twelve sections of six lines. Each section consists of:

six high-current drive lines

six indicator/status bits

one reset line

four relay ID bits

one relay power input

one 5 V input

one ground

Each driver board is capable of recognizing and controlling either latching or non-latching switch modules. A programmable delay (per driver board) dictates the amount of time allocated to relay settling times and current cutoffs (for latching relays).

Each driver board has a single programmable delay parameter. The programmable delay for any board should be set to the maximum value required by any component connected to that board.

12

EX7000 Series Introduction

Page 12
Image 12
VXI EX7000 user manual Relay Drive Control, 4JAVA-BASED Graphical User Interface