NI cDAQ -9181

1 SPECIFICATIONSNI cDAQ -91811-Slot, Ethernet CompactDAQ ChassisDefinitionsWarranted specifications describe the performance of a model under stated operatingconditions and are covered by the model describe values that are relevant to the use of the model under stated operatingconditions but are not covered by the model warranty. Typical specifications describe the expected performance met by a majority of themodels. Nominal specifications describe parameters and attributes that may be useful in are Typical unless otherwise are valid at 25 C unless otherwise InputInput FIFO size127 samplesMaximum sample rate1 Determined by the C Series moduleTiming accuracy250 ppm of sample rateTiming nsNumber of channels supportedDetermined by the C Series module1 Performance dependent on type of installed C Series module and number of channels in the not include group delay.

2 For more information, refer to the documentation for each C OutputNumber of channels supportedHardware-timed taskOnboard regeneration16 Non-regenerationDetermined by the C Series moduleNon- hardware -timed taskDetermined by the C Series moduleMaximum update rateOnboard MS/s (multi-channel, aggregate)Non-regenerationDetermined by the C Series moduleTiming accuracy50 ppm of sample rateTiming nsOutput FIFO sizeOnboard regeneration8,191 samples shared among channels usedNon-regeneration127 samplesAO waveform modesNon-periodic waveform,periodic waveform regeneration mode fromonboard memory,periodic waveform regeneration from hostbuffer including dynamic updateDigital Waveform CharacteristicsWaveform acquisition (DI) FIFOP arallel modules511 samplesSerial modules63 samplesWaveform generation (DO)

3 FIFOP arallel modules2,047 samplesSerial modules63 samplesDigital input sample clock frequencyStreaming to application memorySystem-dependentFinite0 MHz to 10 MHz2 | | NI cDAQ -9181 SpecificationsDigital output sample clock frequencyStreaming from application memorySystem-dependentRegeneration from FIFO0 MHz to 10 MHzFinite0 MHz to 10 MHzTiming accuracy50 ppmGeneral-Purpose Counters/TimersNumber of counters/timers4 Resolution32 bitsCounter measurementsEdge counting, pulse, semi-period, period,two-edge separation, pulse widthPosition measurementsX1, X2, X4 quadrature encoding withChannel Z reloading.

4 Two-pulse encodingOutput applicationsPulse, pulse train with dynamic updates,frequency division, equivalent time samplingInternal base clocks80 MHz, 20 MHz, 100 kHzExternal base clock frequency0 MHz to 20 MHzBase clock accuracy50 ppmOutput frequency0 MHz to 20 MHzInputsGate, Source, HW_Arm, Aux, A, B, Z,Up_DownRouting options for inputsAny module PFI, analog trigger, many internalsignalsFIFOD edicated 127-sample FIFOF requency GeneratorNumber of channels1 Base clocks20 MHz, 10 MHz, 100 kHzDivisors1 to 16 (integers)Base clock accuracy50 ppmOutputAny module PFI terminalNI cDAQ -9181 Specifications | National Instruments | 3 Module PFI CharacteristicsFunctionalityStatic digital input, static digital output, timinginput, and timing outputTiming output sources3 Many analog input, analog output, counter,digital input, and digital output timing signalsTiming input frequency0 MHz to 20 MHzTiming output frequency0 MHz to 20 MHzDigital TriggersSourceAny module PFI terminalPolaritySoftware-selectable for most signalsAnalog input functionStart Trigger, Reference Trigger,Pause Trigger.

5 Sample Clock,Sample Clock TimebaseAnalog output functionStart Trigger, Pause Trigger, Sample Clock,Sample Clock TimebaseCounter/timer functionGate, Source, HW_Arm, Aux, A, B, Z,Up_DownModule I/O StatesAt power-onModule-dependent. Refer to the documentationfor each C Series InterfaceNetwork protocolsTCP/IP, UDPN etwork ports usedHTTP:80 (configuration only), TCP:3580;UDP:5353 (configuration only), TCP:5353(configuration only); TCP:31415; UDP:7865(configuration only), UDP:8473 (configurationonly)Network IP configurationDHCP + Link-Local, DHCP, Static,Link-Local3 Actual available signals are dependent on type of installed C Series | | NI cDAQ -9181 SpecificationsHigh-performance data streams6 Data stream types availableAnalog input, analog output, digital input,digital output, counter/timer input,counter/timer output, NI-XNET4 Default MTU size1500 bytesEthernetNetwork interface100 Base-TX, full-duplex; 100 Base-TX,half-duplex; 10 Base-T, full-duplex.

6 10 Base-T,half-duplexCommunication rates10/100 Mbps, auto-negotiatedMaximum cabling distance100 m/segmentPower RequirementsCaution The protection provided by the NI cDAQ -9181 chassis can be impaired ifit is used in a manner not described in the NI cDAQ -9181 /9184/9188/9191 Some C Series modules have additional power requirements. For moreinformation about C Series module power requirements, refer to the documentationfor each C Series Sleep mode for C Series modules is not supported in the NI input range9 V to 30 VMaximum power consumption55 W4 When a session is active, CAN or LIN (NI-XNET)

7 C Series modules use a total of two data streamsregardless of the number of NI-XNET modules in the maximum 1 W module load per slot across rated temperature and product cDAQ -9181 Specifications | National Instruments | 5 Note The maximum power consumption specification is based on a fully populatedsystem running a high-stress application at elevated ambient temperature and withall C Series modules consuming the maximum allowed input connector2 positions mm pitch mini-combicon screwterminal with screw flanges, Phoenix Contact1727566 Power input mating connectorSauro CTF020V8, Phoenix Contact 1714977,or equivalentPhysical CharacteristicsWeight (unloaded)Approx.

8 470 g ( oz)Dimensions (unloaded) mm mm mm( in. in. in.) Refer to thefollowing mm 2 to mm2 (20 AWG to 14 AWG)copper conductor wireWire strip length6 mm ( in.) of insulation stripped from theendTemperature rating85 CTorque for screw N m to N m ( lb in. lb in.)Wires per screw terminalOne wire per screw terminalConnector securementSecurement typeScrew flanges providedTorque for screw N m to N m ( lb in. lb in.)If you need to clean the chassis, wipe it with a dry | | NI cDAQ -9181 SpecificationsFigure 1. NI cDAQ -9181 mm( in.)

9 Mm( in.) mm ( in.) mm ( in.) mm( in.) mm( in.) mm( in.) mm( in.) mm ( in.) mm( in.)Threaded Holes Use #6-32 UNC-2B Machine Screws, Max Engagement Length mm ( in.)Safety VoltagesConnect only voltages that are within these terminal to C terminal30 V maximum, Measurement Category IMeasurement Category I is for measurements performed on circuits not directly connected tothe electrical distribution system referred to as MAINS voltage. MAINS is a hazardous liveelectrical supply system that powers equipment. This category is for measurements of voltagesfrom specially protected secondary circuits.

10 Such voltage measurements include signal levels,special equipment, limited-energy parts of equipment, circuits powered by regulatedlow-voltage sources, and Do not connect the system to signals or use for measurements withinMeasurement Categories II, III, or cDAQ -9181 Specifications | National Instruments | 7 Note Measurement Categories CAT I and CAT O (Other) are equivalent. These testand measurement circuits are not intended for direct connection to the MAIN sbuilding installations of Measurement Categories CAT II, CAT III, or CAT temperature (IEC 60068-2-1and IEC 60068-2-2)0 C to 55 CCaution To maintain product performance and accuracy specifications when theambient temperature is between 45 and 55 C, you must mount the chassishorizontally to a metal panel or surface using the screw holes or the panel mount the ambient temperature at each side of the CompactDAQ system mm( in.)