VXI model vx2805B0 pages

Highlights
o 8 Channels Per Module
o Each Channel Includes Signal
Conditioning, Filter, ADC and Memory
o 16-Bit Resolution
o High Dynamic Range
o Up to 2.5M Samples/s/ch
o Simultaneous Sampling
o Dual Ported Memory Access
o 1k Snapshot Data FIFO for Each Channel
o 1MHz Bandwidth
o Buffered Analog Output for Each Channel
o Overload Detection for Each Channel
o Excellent Ch-to-Ch Phase Match
o Computer Controlled Calibration
o 16M Samples Storage per Channel
o Multi-Event Recording
o Digital Signal Processors
o Digital Filters, Flat Passband, Sharp Cutoff
o Internal and External Triggering
o Pre- and Post-Trigger Recording
o Gated Mode
o Dual Clock Rate Data Recording
o Constant Voltage Excitation
o SIPSTM Communication Port
o Fully Programmable
o Memory Battery Backup Capability
o Single Width, C-size, VXI Module
o Simple Multi-Chassis Phase Clk & Triggering
o Permits Multiple Chassis Expansion/Operation
o ECL Clock & Trigger Capabilities
Description
The VX2824B is a fourth
generation COTS product. The
predecessors to this module,
interfaced with IMPAX software
(also COTS), have been used to
accurately characterize initial
dynamics for launch vehicles
such as Titan, as the "turn-key"
Lift Off Instrumentation System
(LISA). The VX2824B is being
used in a prestigious shock
laboratory for research and
validation of state of the art
accelerometers, and at the
world's largest automotive
airbag manufacturer, for the
development and testing of
air bags.
The Model VX2824B is a
completely integrated 8
channel data recording VXI
module. Each channel includes a
bridge signal conditioner, a low
pass filter, a 16-bit 2.5M
Samples/sec/ch ADC, and
16M Samples of DRAM
storage per channel. DRAM
may be divided into 2, 4 or 8
segments for multiple event
recording.
Built-in channel conditioning is
suitable for strain gauge bridgetype
transducers and for voltage
signals. Constant voltage
excitation is independently
programmable for each channel.
Special function signal
conditioning requirements may
be accommodated with SIPSTM
(Smart Interface Panel System)
product families and controlled
by the VX2824B onboard
processor.
Input full-scale sensitivity is programmable from ±10mV to ±5V in 3dB steps. A 16-bit ADC
provides high accuracy, a high dynamic range and resolutions from 340nV to 170ìV per
count. Offset correction range is ±2.5V with 16-bit resolution. A dedicated signal
processor provides superb digital filtering. Filter Fco auto-tracks the sample rate, plus
custom filter download capabilities. Dedicated hardware may generate a trigger from the
analog signal being digitized on Channel #1 using either level and slope, or window criteria.
Trigger Holdoff may be invoked to reject threshold crossings of short duration. Holdoff
may improve triggering reliability under noisy signal conditions.
The VX2824B auto bridge balance function may be initiated by computer command. A complete end-to-end calibration of each channel,
including the transducer, may be performed by a computer calibration routine. You may use either switched or external calibration resistors (with
SIPSTM ) or the unique internal shunt emulation circuit. The shunt emulation technique provides a fast, multi-point calibration check without operator
intervention.t t
Heritage
PG Advanced Research
Products Group