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 ERAD system can be
expanded with modular A/D modules for up to 512 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.
This new Ethernet remote A/D system is a turnkey pressure
measurement system that combines the field proven RAD with Ethernet
TCP/IP. The state-of-the-art DSP technology is at the heart of our
new ERAD4000 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. The ERAD 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 scanner. The RADBASE is small enough to fit inside many
wind tunnel models.
The RADBASE DSP processor utilizes a pressure temperature look-up
table to compensate the pressure sensors for temperature changes,
thus reducing thermal errors. Long term accuracy is achieved for up
to 6 months before recalibration is required. ERAD4000 system is
capable of maintaining its performance even as computer technology
and operating systems upgrade. ERAD will work on any hardware
platform that has an Ethernet port, minimizing the user's future
interface risks.
