Measurement-computing PCI-DAS08 User Manual Page 15
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Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input
Table 1. Analog input specifications
Parameter Specification
A/D converter type AD1674J
Resolution 12 bits
Ranges ±5 V
A/D pacing Software polled
A/D triggering modes Digital: Software polling of digital input (DIN1) followed by pacer
loading and configuration.
Data transfer Software polled
Polarity Bipolar
Number of channels 8 single-ended
A/D conversion time 10 µs
Throughput 40 kHz typical, PC dependent
Relative accuracy ±1 LSB
Differential linearity error No missing codes guaranteed
Integral linearity error ±1 LSB
Gain drift (A/D specs) ±180 ppm/°C
Zero drift (A/D specs) ±60 ppm/°C
Input leakage current ±60 nA max over temperature
Input impedance 10 MegOhm min
Absolute maximum input voltage ±35 V
Noise distribution (Rate = 1-50 kHz, Average % ± 2 bins, Average % ± 1 bin, Average # bins)
Bipolar (5 V): 100% / 100% / 3 bins
Digital input / output
Table 2. Digital I/O specifications
Parameter Specification
Output: 74ACT273 Digital type (main connector):
Input: 74LS244
Configuration 3 fixed input, 4 fixed output
Number of channels 7
Output high 3.94 volts min @ -24 mA (Vcc = 4.5 V)
Output low 0.36 volts max @ 24 mA (Vcc = 4.5 V)
Input high 2.0 volts min, 7 volts absolute max
Input low 0.8 volts max, -0.5 volts absolute min
Interrupts INTA# - mapped to IRQn via PCI BIOS at boot-time
Interrupt enable Programmable through PCI controller:
0 = disabled
1 = enabled (default)
4-1
- PCI-DAS08 2
- HM PCI-DAS08.doc 3
- Table of Contents 5
- About this User's Guide 6
- Introducing the PCI-DAS08 7
- PCI-DAS08 block diagram 8
- Unpacking the PCI-DAS08 10
- Installing the software 10
- Installing the PCI-DAS08 10
- Configuring the PCI-DAS08 11
- The red stripe 12
- Programming languages 14
- Register-level programming 14
- Specifications 15
- Power consumption 16
- Environmental 16
- Counter section 16
- Main connector and pin out 17
- Declaration of Conformity 18
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