Digital i/o boards with up to 32 isolated digital inputs, up to 32 isolated digital outputs, 16 ttl digital i/os, adq-link, optional 8 change-over relays (36 pages)
Page 2
Manual ADQ-250 series Rev. 0.9 Imprint Manual ADQ-250 series Rev. 0.9 Date: 11/20/2015 Manufacturer and Support ALLNET and ALLDAQ are registered trademarks of the ALLNET GmbH Computersysteme. For questi- ® ® ® ons, problems and product information please contact the manufacturer directly:...
Please read – before installing the device – this manual watchfully! Scope of delivery • ALLDAQ board of ADQ-250 series for CompactPCI (4 HP) or PCI Express • Data medium with driver software and documentation Optional as bundle including: • Special terminal block for ADQ-250 series (ADQ-TB-ADQ-250-HUT)
Introduction Manual ADQ-250 series Rev. 0.9 • Ensure that no static discharge can occur passing the board when handling it. Follow the standard ESD safety precautions (see also chapter 2.1 on page 9). • Never connect devices with voltage-carrying parts, especially not with mains voltage. • The user must take appropriate precautions to avoid unforseeable misuse.
Introduction Short description The measurement boards of the ALLDAQ ADQ-250 series are CompactPCI or PCI-Express boards for high precision voltage measurements in industry and laboratory with a bandwidth of up to 280 kHz. By the potential-free voltage inputs and the full differential sampling parasitic effects like ground loops and common mode errors can be largely rejected.
By the ALLDAQ-Manager you have central access to the software developer kit (SDK), several utility programs and help files. The ALLDAQ-Manager can be found in the info area of the taskbar (usually at the bottom right corner of the desktop) or by the Windows Start menu. See also chapter 2.4 on page 11.
Manual ADQ-250 series Rev. 0.9 Initial operation Initial operation Installing the board Please read the manual of your computer prior installing the board regarding the installation of additional hardware components. Handling the board should be done with care to ensure that the device will not be damaged by electrostatic discharge (ESD), mechanical stress or current surges.
Test programm Simple test programs can be found in the ALLDAQ-SDK. For each programming language a sub- directory „Applications“ can be found with test programs for your ALLDAQ hardware. With the ALLDAQ-Manager you can retrieve several information of the installed ADQ hardware.
The ALLDAQ-Manager under Windows gives you a quick overview of the parameters of the ALLDAQ driver system and offers a central access to software tools and help files. You can find the ALLDAQ-Manager in the info area of the taskbar (as a rule at the bottom right) or via the Windows start menue.
Manual ADQ-250 series Rev. 0.9 Balancing/Calibration By the ALLDAQ-Manager you can select which balancing data record (factory or user balancing) should be activated when booting the computer. You can change the setting via the ALLDAQ- Manager. 2.5.1 Factory balancing The ADQ-250 series will be balanced before delivery. The balancing data will be stored into an EEPROM.
Manual ADQ-250 series Rev. 0.9 Initial operation 2.5.3 DAkkS calibration We collaborate with independent test laboratories accredited by the Deutsche Akkreditierungs- stelle GmbH (DAkkS). On-demand please contact our service department. For contact details see chapter 4.4 on page 33. Initial operation...
Page 14
Functional groups Manual ADQ-250 series Rev. 0.9 Functional groups...
Functional groups Manual ADQ-250 series Rev. 0.9 Analog acquisition Nyquist´s sampling theorem (Oversampling) Nyquist´s sampling theorem tells us, that the sample rate for a periodic signal, whose maximum frequency component should be f , must be at least twice as high, i. e. 2 • f or higher. Pmax Pmax In practice we recommend to choose a sampling rate by the factor 5 or 10 higher than f Pmax replicate the signal form truely.
Functional groups Manual ADQ-250 series Rev. 0.9 3.2.1.1.1 Standard measurement range The standard input voltage range is ±10.24 V. Each channel is decoupled by a high-impedance input stage with a typical R of 240 MΩ and a parallel C = typ. 4 pF. Figure 7: Input stage for ±10.24 V range 3.2.1.1.2 Extended measurement range As an option an extended input voltage range of ±102.4 V is available.
Manual ADQ-250 series Rev. 0.9 Functional groups 3.2.1.1.3 Isolation voltage Note, that the maximum voltage potential U between the negative analog input AI_x- and earth may not exceed the isolation voltage of U = 700 V . Else the board can be be dama- ged irreversible.
Functional groups Manual ADQ-250 series Rev. 0.9 Figure 10: Wiring of the external trigger inputs 3.2.2 Programming For programming the analog acquisition there is a differentiation between the so-called "Single value acquisition" and the "Timer-controlled acquisition". On demand the measurement can be started or stopped by two external TTL trigger inputs.
Manual ADQ-250 series Rev. 0.9 Functional groups Figure 11: Timer-controlled acquisition Please note the order of operation as described in the online help. Bi-directional digital I/Os The ADQ-250 series provides one bi-directional 8 bit wide digital I/O port (DIO_7..0). If the digital port is configured as input the pins can be monitored on bit-change and can generate an interrupt event.
Functional groups Manual ADQ-250 series Rev. 0.9 Figure 12: Wiring of the digital I/Os 3.3.2 Programming The bi-directional 8 bit digital I/O port (DIO_x) can be programmed by port as input or output. After power-up the port is configured as input. 3.3.2.1 Single value input/output In this operation mode one digital value can be read resp.
Page 23
Manual ADQ-250 series Rev. 0.9 Functional groups Digital input port Bit mask Bit mask Figure 13: Bit change Example for bit change: • When passing the value FFHex in parameter uiPortBitChangeRisingEdge of the structure SADQIRQEnable in function adqEnableIRQ() all bits of a port are moni- tored on a rising edge for example.
Page 24
Appendix Manual ADQ-250 series Rev. 0.9 Appendix...
Manual ADQ-250 series Rev. 0.9 Appendix Appendix Specifications Conditions: T = 23°C if not otherwise specified; warm-up time: 30 minutes. In line with continuous tests we monitor the long-term stability of the specifications regularly. Analog inputs Element Condition Specification Channels 8 full differential voltage inputs Sample rate max. ADQ-255 250 kS/s (synchronous) ADQ-256 2 MS/s (synchronous)
Page 26
Appendix Manual ADQ-250 series Rev. 0.9 Element Condition Specification Input impedance Standard > 100 MΩ, typ. 240 MΩ, C = 4 pF Extended tbd. Isolation voltage Channel to PC ground 700 VDC / 700 VAC (60 Hz) Channel to channel 700 VDC / 700 VAC (60 Hz) Accurracy see separate table...
Page 27
Manual ADQ-250 series Rev. 0.9 Appendix Accurracy of the analog inputs ADQ-258 Conditions: 100 values sampled with 100 kHz and subsequent average calculation Measuring range Data point Expanded measurement uncertainty (coverage factor k = 2) ±10.24 V range 10 V ±0.353 mV (0.004%) (1 LSB = 0.0781 mV) ±0.271 mV (0.005%) ±0.184 mV (0.018%) ±102.4 V range...
Page 28
Appendix Manual ADQ-250 series Rev. 0.9 Element Condition Specification Operation modes Single Read/write of single values Streaming max. 1 kHz (via software timer) Interrupt Monitoring the digital port for bit-change Ground reference PC ground (GND_PC) General Element Condition Specification PC interface cPCI models CompactPCI (32 bit, 33 MHz) Rev.
Manual ADQ-250 series Rev. 0.9 Appendix 4.2.3 Auxiliary connector (ST10) IDC connector ST10 provides the digital I/Os DIO_7..0 and the PC power supplies (3.3 V / 5 V / 12 V). Note: The pins DIO_7..0 of ST10 are directly connected to the corresponding pins of ST9. You may not use these signals via ST9 and ST10 at the same time.
Appendix Manual ADQ-250 series Rev. 0.9 4.2.4 Terminal block for ADQ-250 Special terminal block for the ADQ-250 series. The analog inputs can either be connected via the BNC female connectors, the MMCX female connectors or the Phoenix type clamps (ST1_4 and ST5_8), the digital I/Os via the 10-pin Phoenix type clamp ST9B and the trigger inputs as well as +5 V and ground via a 5-pin Phoenix type clamp ST9A.
8 x Coaxial cable from MMCX male connector to BNC male connector (1 m) ADQ-HDMI-MM-1m (Art. No. tbd.) HDMI cable to connect the digital-I/Os and trigger signals with the terminal block (1 m) Manufacturer and support ALLNET and ALLDAQ are registered trademarks of the ALLNET GmbH Computersysteme. ® ®...
The warranty terms valid for your country can be found on the homepage of your distributor. If you have questions or problems applying the warranty you can contact us during our nor- mal opening hours under the following phone number +49 (0)89 894 222 – 74 or by email: support@alldaq.com. Appendix...
Page 35
Important notes ....34 ALLDAQ Manager ....11 Initial operation ....9 Analog acquisition .
Page 36
Appendix Manual ADQ-250 series Rev. 0.9 Safety instructions ....5 Sampling theorem (Nyquist) ..16 Scope of delivery ....5 Single value mode.
Page 37
Manual ADQ-250 series Rev. 0.9 Appendix Appendix...
Need help?
Do you have a question about the ADQ-250 cPCI and is the answer not in the manual?
Questions and answers