DVX 25XX Series
Multichannel Data Acquisition/
Digitizer Systems
The DVX 25XX Series of high resolution, multichannel Data
Acquisition/ Digitizer Systems combines the superior precision of 14-, or
16-bit measurements with the high throughput of 200 kHz, 400 kHz, and
1 MHz, and the compactness of a dual eurocard (6U) VME format (VXI
size B). Fully compatible with the VME specification Rev. C1, and VXI
specification Rev. 1.3, the DVX 25XX Series occupies a single slot in a
VME chassis and provides unparalleled price/performance ratio when
used either alone or in combination with other VXI/VME based boards
(multiplexers, digital-to-analog converters) of the Analogic DVX 2xxx
family of cards. Reflecting Analogic’s experience in precision instru-
mentation, the DVX 25XX Series has been designed to meet the strin-
gent demands of fast and accurate measurements associated with multi-
channel data acquisition applications.
F E A T U R E S
❑14-, 16-Bit Resolution
❑ 200, 400 kHz; or 1 MHz Throughput
❑ Dual Channel DMA Controller
❑ 8 Differential Inputs
❑ Expandability up to 256 Channels
❑ Voltage & Current Input Protection
❑ Excellent CMRR
❑ Dynamically Set Gain per Channel on
DVX 2502 & 2503
Eight shielded, differential inputs are provided with both voltage and
current protection. Each unit is directly expandable to 256 channels with
the Analogic family of DVX multiplexer boards. The eight input signals
are multiplexed via an instrumentation amplifier and a programmable
gain amplifier, with four software selectable gains, into an ultrafast,
high resolution, sampling analog-to-digital converter. The front-end
switching and settling time of the DVX 25XX Series have been opti-
mized to support the high performance of the A/D converter.
Every Cycle on DVX 2504
❑ Variable Sampling Rate
❑ Multiple Sample Clock Sources
❑ Precision Internal Clock
❑ Versatile Trigger Unit
❑ Seven Level Interrupt
❑ VXI Support
❑ DC to DC Converter, Powered by
+5V Only
❑ Self-Test Capability
❑ Software Drivers Available
The DVX 25XX Series provides a powerful 2-channel on-board DMA
controller as a standard feature. The DMA controller executes fast trans-
fers over the VMEbus sending data directly to system memory, signifi-
cantly enhancing total system performance by dramatically reducing the
I/O overhead of the bus. Once initialized by the host computer, the
DMA controller operates in transparent mode.
A P P L I C A T I O N S
❑ Real Time Data Acquisition
❑ Precision Instrumentation
❑ Automatic Test Equipment
❑ Monitoring and Control
❑ Audio
Three flexible trigger sources are available: a user supplied external trig-
ger, an internal trigger, and a data-dependent trigger produced by the
occurrence of a prespecified event on a selected channel. Before begin-
ning the data acquisition, trigger information, as well as channel selec-
tion inside a scan, and gain setting are downloaded into the timing and
control unit resident on the DVX 25XX Series of cards. For ease of inte-
gration, fully compatible software drivers are available. No coding is
required; all necessary commands are included in the drivers.
❑ Sonar