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VCM-DAS-1
PC/104 Data Acquisition & Control Module
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PC/104 expansion module: 100 kHz analog input, analog output, and digital I/O |
Highlights
- Analog Input
16 Channels
16-bit input resolution
Single ended, high
impedance inputs
Electronic
digital calibration
Up
to 100K samples/second
±5V
and ±10V input ranges
On
board timer for periodic readings
Auto
retrigger mode
Auto
Channel Increment Mode
DMA
support
Compatible
with industry standard 5B01 series signal conditioners
- Analog Output
2 channels
12-bit
resolution
Electronic
digital calibration
0-5V
and 0-10V output range
40 µS update time
Short
circuit proof, 5 ma output current
- Digital I/O
Two 8-bit ports
±24
ma output drive
Programmable
read-only or read/write
Opto
22 compatible
EEPROM
storage for user data
- Customized
versions available
- Environmental Stress Screening (ESS)
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Description
Overview
The VCM-DAS-1 module provides a combination of analog
I/O, digital I/O, and non-volatile storage, which makes
it ideal for data acquisition and control applications.
All of its functions are provided on a single 3.8 x
3.6" PC/104 module.
The analog input section features 16 single-ended
input channels with 16-bit resolution, fast 10 µS
conversion, and a ±5V or ±10V input range (153µV or
305µV resolution). Throughput of up to 100 kHz may be
realized with conversions on one channel and up to 67 kHz
when scanning between channels. A variety of automatic
channel scanning and triggering modes are available,
including DMA support.
The analog output section includes two 12-bit analog
output channels. Each may be jumpered independently for
0-5V or 0-10V output.
Both sections feature simplified calibration using
programmable digital pots. In addition, the on-board
EEPROM which is used to store the calibration values has
free space available for user data. The digital pots
power up and reset to mid-scale, and can be set to any
calibration value during system initialization.
The digital I/O section provides 16 digital I/O lines
which feature high current TTL drivers. The two 8-bit
ports are byte configurable as inputs only or outputs
with readback. The digital interface is plug compatible
with Opto 22 type modular I/O racks.
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Ordering Information
| Accessories |
| VCM-DAS-1 ... |
100 kHz Analog I/O Module |
| VL-HDW-100 ... |
Standoff Pkg. English Thread |
| VL-HDW-101 ... |
Standoff Pkg. Metric Thread |
| VL-CBL-2602 ... |
1.5' 26-pin/26-pin socket |
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Specifications
| General |
Compatibility
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PC/104: Full compliance, 16-bit data bus |
| Board Size |
3.8" x 3.6" (PC/104 standard)
0.6" component height
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| Mechanical |
Storage Temperature
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–40°C to 85°C |
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Free Air Operating Temperature
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0°C to +60°C |
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Power Requirements
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+5V @ 510 ma typical
±12V @ ±20 ma typical
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| I/O Options |
Analog Input
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Channels: 16 channels
Resolution: 16 bit (65536 counts)
Accuracy: ±0.003% (±3 LSBs), no missing codes
Input Mode: Single ended
Range: ±5V or ±10V (jumper selectable, all channels the same)
Conversion Time: 10 µS
Settling Time: 5 µS (applies only when switching channels)
Protection: ±35V overvoltage protection
Impedance:Ohms, 20pF
Retrigger Timer: Programmable 20 µS, 50 µS, 100 µS, 250 µS, 500 µS, 1 µS
Interrupt Channel: IRQ 10, 11, or 12
DMA Channel: DMA 5, 6, or 7
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Analog Output
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Channels: 2 channels
Range: 0 to 5V or 0 to 10V (jumper selectable, each channel independent)
Resolution: 12 bits
Accuracy: ±1.5 LSB
Update/Settling Time: 40 µS
Output Drive: 5 ma, 200 pF (each channel)
Access: Bitwise serial
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Digital I/O
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Channels: 16 (non-inverting)
Input Threshold: TTL compatible
Output Drive (H): –24 ma @ 2.4V
Output Drive (L): +24 ma @ 0.55V
Signal Direction: Byte programmable as input or output with readback
Short Protection: Short circuit to ground, indefinite duration
I/O Interface: Occupies 16 ports on any 16-bit boundary.
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EEPROM
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Organization: Sixty-four 16-bit words
Allocation: Two words used for digital pots, 62 words available for general purpose storage
Access: Bitwise serial
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External Connectors
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Analog In/Out: 26-pin .1" header
Opto 22: 34-pin .1" header
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| Data represented is subject to change without prior notice. |
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