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National Instruments PCIe-7846 Manual

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Содержание PCIe-7846

Страница 1: ...nal Instruments PCIe 7846 Manual Get Pricing Availability at ApexWaves com Call Today 1 800 915 6216 Email sales apexwaves com https www apexwaves com modular systems national instruments r series PCIe 7846 ...

Страница 2: ...rdware Overview The following high level block diagram represents the PCIe 7846 Figure 1 PCIe 7846 Block Diagram NI ASIC FPGA NI PCIe 7846 DIO Data Address Control AO AO x8 ADC AI AI x8 INA DIO x16 DIO x32 DDR3 RAM Kintex 7 DAC 5 V Reference CONNECTOR 1 DIO CONNECTOR 0 MIO Device Temperature Flash Memory 100 MHz OSC PCIe Connector Overvoltage Protection Overvoltage Protection Overvoltage Protectio...

Страница 3: ...AI1 AIGND0 AI0 5V DGND DGND DGND DGND DGND DGND DGND DGND DIO8 DIO10 DIO12 DIO14 AOGND7 AOGND6 AOGND5 AOGND4 AOGND3 AOGND2 AOGND1 AOGND0 NC AI7 AIGND7 AI6 AI5 AIGND5 AI4 AI3 AIGND3 AI2 AI1 AIGND1 AI0 68 34 67 33 66 32 65 31 64 30 63 29 62 28 61 27 60 26 59 25 58 24 57 23 56 22 55 21 54 20 53 19 52 18 51 17 50 16 49 15 48 14 47 13 46 12 45 11 44 10 43 9 42 8 41 7 40 6 39 5 38 4 37 3 36 2 35 1 CONNE...

Страница 4: ...re information Analog Input The PCIe 7846 provides connections for eight AI channels Each channel has an AI pin AI pin and AIGND pin to which you can connect both single ended or differential voltage signals Use the AISENSE pin to connect non referenced single ended signals Connecting Single Ended Voltage Signals To connect referenced single ended voltage signals to the PCIe 7846 you must connect ...

Страница 5: ... the positive voltage signal to the AI and the negative voltage signal to AI To connect grounded differential signals to the PCIe 7846 you must also connect the signal reference to AI GND Figure 4 Connecting Grounded Differential Signals to the PCIe 7846 PGIA ADC AI NI PCIe 7846 Connection Accessory AISENSE AIGND Vcm V1 Overvoltage Protection AI Overvoltage Protection Overvoltage Protection To con...

Страница 6: ...connect a load Figure 6 Connecting a Load NI PCIe 7846 Connection Accessory AOGND LOAD AO DAC Digital I O The NI PCIe 7846 provides connections for 48 digital input output DIO channels Connector 0 contains 16 low speed channels that can run up to 10 MHz signal frequencies Connector 1 contains 32 high speed DIO channels that can run up to 80 MHz signal frequencies and support external clock source ...

Страница 7: ...ut low with pull down resistors To set another power on state you can configure the NI PCIe 7846 to load a VI when the system powers on The VI can then set the DIO lines to any power on state All the high speed DIO channels on Connector 1 are routed with a 50 Ω characteristic trace impedance Route all external circuitry with a similar impedance to ensure best signal quality NI recommends performin...

Страница 8: ...s through conduits that also contain power lines Protect signal lines from magnetic fields caused by electric motors welding equipment breakers or transformers by running them through special metal conduits To minimize signal to signal skew within each digital channel maintain signal lines length within 1 inch of difference 5 V Power Source Use the 5 V terminals on the I O connector supply 5 V ref...

Страница 9: ...hich provide up to date contact information Information is subject to change without notice Refer to the NI Trademarks and Logo Guidelines at ni com trademarks for information on NI trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering NI products technology refer to the appropriate location Help Patents in your...

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