Features

• DSP technology
• 625 Hz/channel/sec. throughput
• Modular 1 to 8 A/D sections per RADBASE
• Compact base 1.75 x 1.75 x 2.68 inches (44.45 x 44.45 x 68.07 mm)
• Engineering Unit Output
• Up to 2048 measurement channels
• Ethernet TCP/IP protocol “Network Ready”

General Description
The state-of-the-art DSP technology is at the heart of the new E-RAD4000 pressure measurement system. Located inside the RADBASE is a programmable device (Digital Signal Processor, DSP), capable of extremely fast math functions that operate on the data stream in real time. All measurements are converted into Engineering units.

Advantages of DSP technology:
- Boots up quickly
- Real Time Operating System
- Low Data Latency

The RADBASE DSP processor utilizes a pressure temperature look-up table to compensate the pressure sensors for temperature changes, thus reducing thermal errors. It also can control the actuation of an external calibration valve via the RDS3200 module to perform on-line zero offset corrections. Long term accuracy is achieved for up to 6 months before recalibration is required.

This new Ethernet remote A/D system is a turnkey pressure measurement system that combines the field proven RAD with Ethernet TCP/IP. E-RAD4000 system is capable of maintaining its performance even as computer technology and operating systems upgrade. E-RAD will work on any hardware platform that has an Ethernet port, thus minimizing the user’s future interface risks.

The E-RAD system is modular and allows up to 8 each A/D (16 bit) modules to be plugged into one RADBASE. Each A/D supports one 16, 32, or 64 channel ZOC pressure scanner or one ZOCEIM.

The output of the RADBASE is Engineering units via a small diameter Standard CAT5 Ethernet cable. The RADBASE has the pressure sensor calibration data stored in memory and converts the digital data to temperature compensated Engineering units.

Data are then output Ethernet TCP/IP 100 baseT to a host computer.

Applications
Typically, the RADBASE would be located inside a wind tunnel model or other space limited location in close proximity to the ZOC pressure scanners.

For small models with low number of pressure channel requirements, the RADBASE can be minimal size to fit into the model. For large systems the E-RAD system can be expanded with modular A/D modules or multiple RADBASES for up to 2048 pressure channel system.

A feature of the system is that each A/D and each ZOC pressure scanner has an ID chip installed. During power up or on demand, the RAD can read the ZOC ID chip information - model, pressure range, serial number, number of channels, date of manufacture and calibration date.