VXI EX7000 user manual Relay Drive Control, 4 JAVA-BASED GRAPHICAL USER INTERFACE

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