{"id":28467,"date":"2025-08-26T14:44:15","date_gmt":"2025-08-26T06:44:15","guid":{"rendered":"https:\/\/pxisource.com\/?post_type=product&#038;p=28467"},"modified":"2026-08-27T14:09:38","modified_gmt":"2026-08-27T06:09:38","slug":"pci-6281","status":"publish","type":"product","link":"https:\/\/pxisource.com\/ru\/product\/pci-6281\/","title":{"rendered":"PCI-6281"},"content":{"rendered":"<h3>Product Introduction<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>NI PCI-6281<\/strong> is a high-accuracy <strong>M Series multifunction data acquisition (DAQ) device<\/strong> designed for PCI-based measurement and automated test systems. It combines high-resolution analog input, analog output, digital I\/O, counters\/timers, and hardware triggering on a single multifunction DAQ board.\n<\/p>\n<p>\nThe PCI-6281 provides up to <strong>16 single-ended or 8 differential analog input channels<\/strong> \u0441 <strong>18-bit resolution<\/strong>, making it particularly suitable for applications where measurement accuracy and resolution are more important than extremely high acquisition speed.\n<\/p>\n<p>\nIn addition to analog input, the PCI-6281 provides <strong>2 analog output channels, 24 digital I\/O lines, and two 32-bit counters\/timers<\/strong>. This multifunction architecture allows engineers to perform measurement, generation, digital control, event counting, and timing functions with a single PCI DAQ device.\n<\/p>\n<p>\nTypical applications include laboratory automation, research, design validation, electronic testing, manufacturing test, sensor measurement, data logging, process monitoring, and automated test equipment.\n<\/p>\n<h3>Product Overview<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>National Instruments PCI-6281<\/strong> belongs to the high-accuracy NI M Series multifunction DAQ family.\n<\/p>\n<p>\nA typical measurement architecture is:\n<\/p>\n<p>\n<strong>Sensors \/ Voltage Signals \u2192 Signal Conditioning \u2192 PCI-6281 \u2192 PCI Bus \u2192 Host Computer \u2192 NI-DAQmx \/ LabVIEW<\/strong>\n<\/p>\n<p>\nThe PCI-6281 integrates multiple measurement and control functions into a single device, reducing the number of separate interface cards required in a PC-based test system.\n<\/p>\n<h3>Key Features<\/h3>\n<h4>18-Bit Analog Input Resolution<\/h4>\n<p>\nOne of the most important characteristics of the PCI-6281 is its <strong>18-bit analog input resolution<\/strong>.\n<\/p>\n<p>\nThe higher ADC resolution provides finer measurement granularity than conventional 16-bit multifunction DAQ devices, making the PCI-6281 suitable for precision voltage measurements and sensor acquisition applications.\n<\/p>\n<h4>Up to 625 kS\/s Analog Input<\/h4>\n<p>\nThe PCI-6281 provides high-resolution analog acquisition with sampling performance up to <strong>625 kS\/s<\/strong>.\n<\/p>\n<p>\nThis combination of resolution and acquisition speed makes the device suitable for precision measurement applications that require significantly more performance than low-speed monitoring hardware.\n<\/p>\n<h4>16 Single-Ended Analog Inputs<\/h4>\n<p>\nThe PCI-6281 provides up to <strong>16 single-ended analog input channels<\/strong>.\n<\/p>\n<p>\nThis configuration is useful when a test system must acquire multiple voltage or conditioned sensor signals using a common measurement architecture.\n<\/p>\n<h4>8 Differential Analog Inputs<\/h4>\n<p>\nThe analog input channels can also be configured for up to <strong>8 differential measurements<\/strong>.\n<\/p>\n<p>\nDifferential measurement can provide improved rejection of common-mode noise and is often preferred for precision measurements, remote sensors, and electrically noisy environments.\n<\/p>\n<h4>2 Analog Output Channels<\/h4>\n<p>\nThe PCI-6281 provides <strong>two analog output channels<\/strong> for generating programmable voltage signals.\n<\/p>\n<p>\nAnalog outputs can be used for:\n<\/p>\n<ul>\n<li>Device excitation<\/li>\n<li>Control signals<\/li>\n<li>Test stimulus generation<\/li>\n<li>Setpoint generation<\/li>\n<li>Closed-loop test applications<\/li>\n<li>Automated device validation<\/li>\n<\/ul>\n<h4>24 Digital I\/O Lines<\/h4>\n<p>\nThe PCI-6281 includes <strong>24 digital I\/O lines<\/strong> for interfacing with digital devices and control signals.\n<\/p>\n<p>\nDigital I\/O can be used for:\n<\/p>\n<ul>\n<li>Device control<\/li>\n<li>Status monitoring<\/li>\n<li>Relay control<\/li>\n<li>Digital triggering<\/li>\n<li>Logic-state monitoring<\/li>\n<li>Automated test sequencing<\/li>\n<\/ul>\n<h4>Two 32-Bit Counters\/Timers<\/h4>\n<p>\nThe PCI-6281 provides <strong>two 32-bit counters\/timers<\/strong> for timing and event-based measurement applications.\n<\/p>\n<p>\nCounter\/timer applications can include:\n<\/p>\n<ul>\n<li>\u041f\u043e\u0434\u0441\u0447\u0435\u0442 \u0441\u043e\u0431\u044b\u0442\u0438\u0439<\/li>\n<li>Frequency measurement<\/li>\n<li>Period measurement<\/li>\n<li>Pulse-width measurement<\/li>\n<li>Encoder measurement<\/li>\n<li>\u0413\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u044f \u0438\u043c\u043f\u0443\u043b\u044c\u0441\u043e\u0432<\/li>\n<li>Digital timing<\/li>\n<\/ul>\n<h4>Analog and Digital Triggering<\/h4>\n<p>\nThe PCI-6281 supports hardware triggering capabilities for synchronized and event-driven acquisition.\n<\/p>\n<p>\nTriggering allows measurements to begin or respond according to defined analog or digital events rather than relying exclusively on software timing.\n<\/p>\n<h4>PCI Interface<\/h4>\n<p>\nThe PCI-6281 installs directly into a compatible <strong>PCI slot<\/strong> in a desktop, industrial, or rackmount computer.\n<\/p>\n<p>\nIt is particularly useful for maintaining and expanding existing PCI-based automated test and measurement systems.\n<\/p>\n<h4>NI-DAQmx Support<\/h4>\n<p>\nThe PCI-6281 is supported through the NI-DAQmx measurement architecture, providing configuration, acquisition, generation, timing, triggering, and programming functionality.\n<\/p>\n<p>\nThe device can be integrated into applications developed with LabVIEW and other compatible programming environments.\n<\/p>\n<h3>Technical Specifications<\/h3>\n<table>\n<tr>\n<th>\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\n<th>\u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f<\/th>\n<\/tr>\n<tr>\n<td width=\"280\">Product Type<\/td>\n<td>M Series Multifunction DAQ Device<\/td>\n<\/tr>\n<tr>\n<td>\u041c\u043e\u0434\u0435\u043b\u044c<\/td>\n<td>PCI-6281<\/td>\n<\/tr>\n<tr>\n<td>Manufacturer<\/td>\n<td>\u041d\u0430\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b<\/td>\n<\/tr>\n<tr>\n<td>\u0428\u0438\u043d\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441<\/td>\n<td>PCI<\/td>\n<\/tr>\n<tr>\n<td>Analog Input Resolution<\/td>\n<td>18-Bit<\/td>\n<\/tr>\n<tr>\n<td>Maximum Analog Input Sample Rate<\/td>\n<td>Up to 625 kS\/s<\/td>\n<\/tr>\n<tr>\n<td>Maximum Single-Ended Analog Inputs<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>Maximum Differential Analog Inputs<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>Analog Output Channels<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u0432\u0432\u043e\u0434-\u0432\u044b\u0432\u043e\u0434<\/td>\n<td>24 Lines<\/td>\n<\/tr>\n<tr>\n<td>Counters\/Timers<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>Counter Resolution<\/td>\n<td>32-Bit<\/td>\n<\/tr>\n<tr>\n<td>\u0417\u0430\u043f\u0443\u0441\u043a<\/td>\n<td>Analog and Digital<\/td>\n<\/tr>\n<tr>\n<td>I\/O Connector<\/td>\n<td>68-Pin VHDCI<\/td>\n<\/tr>\n<tr>\n<td>Driver<\/td>\n<td>\u041d\u0418-DAQmx<\/td>\n<\/tr>\n<tr>\n<td>Product Family<\/td>\n<td>NI M Series DAQ<\/td>\n<\/tr>\n<tr>\n<td>Primary Function<\/td>\n<td>Precision Multifunction Data Acquisition<\/td>\n<\/tr>\n<\/table>\n<h3>How Does the PCI-6281 Work?<\/h3>\n<p>\nThe PCI-6281 acquires analog signals from sensors, transducers, test points, and other voltage sources and converts them into digital measurement data using its high-resolution analog-to-digital converter.\n<\/p>\n<p>\nA simplified acquisition path is:\n<\/p>\n<p>\n<strong>Analog Signal \u2192 Input Circuitry \u2192 Multiplexer \u2192 18-Bit ADC \u2192 PCI-6281 \u2192 PCI Bus \u2192 Host Application<\/strong>\n<\/p>\n<p>\nThe same device also provides analog output, digital I\/O, counters\/timers, and triggering resources, allowing measurement and control operations to be coordinated within one DAQ system.\n<\/p>\n<h3>High-Accuracy Data Acquisition<\/h3>\n<p>\nThe PCI-6281 is particularly useful when measurement accuracy and resolution are major system requirements.\n<\/p>\n<p>\nIts 18-bit analog input architecture provides finer voltage measurement resolution than lower-resolution multifunction DAQ hardware.\n<\/p>\n<p>\n\u0422\u0438\u043f\u0438\u0447\u043d\u044b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442:\n<\/p>\n<ul>\n<li>Precision voltage measurement<\/li>\n<li>Sensor characterization<\/li>\n<li>Electronic device validation<\/li>\n<li>Laboratory measurement<\/li>\n<li>Research experiments<\/li>\n<li>Automated data logging<\/li>\n<\/ul>\n<h3>Sensor Measurement<\/h3>\n<p>\nThe PCI-6281 can acquire signals from sensors that provide compatible voltage outputs or from sensors connected through appropriate signal-conditioning hardware.\n<\/p>\n<p>\nApplications can include:\n<\/p>\n<ul>\n<li>Pressure measurement<\/li>\n<li>Force measurement<\/li>\n<li>Position measurement<\/li>\n<li>Temperature measurement with appropriate conditioning<\/li>\n<li>Voltage monitoring<\/li>\n<li>Process sensor acquisition<\/li>\n<\/ul>\n<p>\nAlways verify sensor output range, grounding, signal conditioning, excitation, and input protection requirements before connecting a sensor directly to the DAQ device.\n<\/p>\n<h3>Laboratory Automation<\/h3>\n<p>\nThe PCI-6281 combines analog measurement, waveform generation, digital control, and timing functions in one PCI device.\n<\/p>\n<p>\nThis makes it suitable for automated laboratory systems where a computer must simultaneously acquire sensor data and control external equipment.\n<\/p>\n<h3>Design Verification and Electronic Test<\/h3>\n<p>\nThe PCI-6281 can be used for electronic design verification and functional testing where multiple voltages, control signals, and timing events must be measured or generated.\n<\/p>\n<p>\n\u0422\u0438\u043f\u0438\u0447\u043d\u044b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442:\n<\/p>\n<ul>\n<li>Voltage monitoring<\/li>\n<li>Device characterization<\/li>\n<li>Functional validation<\/li>\n<li>Power-supply monitoring<\/li>\n<li>Control-signal generation<\/li>\n<li>Automated pass\/fail testing<\/li>\n<\/ul>\n<h3>Manufacturing Test<\/h3>\n<p>\nManufacturing test systems can use the PCI-6281 for automated acquisition and control operations.\n<\/p>\n<p>\nA typical production test sequence can:\n<\/p>\n<ol>\n<li>Configure analog and digital channels.<\/li>\n<li>Generate the required test stimulus.<\/li>\n<li>Control the device under test.<\/li>\n<li>Acquire voltage measurements.<\/li>\n<li>Measure timing or frequency signals.<\/li>\n<li>Evaluate pass\/fail limits.<\/li>\n<li>Store the test results.<\/li>\n<\/ol>\n<h3>Analog Input Configuration<\/h3>\n<p>\nThe PCI-6281 supports multiple analog input connection configurations according to the measurement architecture.\n<\/p>\n<p>\nThe appropriate configuration depends on:\n<\/p>\n<ul>\n<li>Signal source type<\/li>\n<li>Grounding<\/li>\n<li>Noise environment<\/li>\n<li>Required channel count<\/li>\n<li>Common-mode voltage<\/li>\n<li>Measurement accuracy requirements<\/li>\n<\/ul>\n<h4>Single-Ended Measurements<\/h4>\n<p>\nSingle-ended configuration provides the maximum analog input channel count and can be appropriate for short connections and properly grounded signal sources.\n<\/p>\n<h4>Differential Measurements<\/h4>\n<p>\nDifferential configuration measures the voltage difference between two input terminals and can provide better common-mode noise rejection.\n<\/p>\n<p>\nFor precision or electrically noisy applications, differential measurement is often preferred when the reduced channel count is acceptable.\n<\/p>\n<h3>Analog Output Applications<\/h3>\n<p>\nThe two analog outputs allow the PCI-6281 to generate programmable voltage signals while simultaneously performing other measurement and control operations.\n<\/p>\n<p>\nTypical analog output applications include:\n<\/p>\n<ul>\n<li>Device stimulus<\/li>\n<li>Voltage setpoints<\/li>\n<li>Control-system references<\/li>\n<li>Automated test excitation<\/li>\n<li>Waveform generation<\/li>\n<\/ul>\n<h3>Digital I\/O Applications<\/h3>\n<p>\nThe 24 digital I\/O lines can be incorporated into test and automation systems for controlling or monitoring digital signals.\n<\/p>\n<p>\n\u0422\u0438\u043f\u0438\u0447\u043d\u044b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442:\n<\/p>\n<ul>\n<li>Relay control<\/li>\n<li>Switch control<\/li>\n<li>Device status monitoring<\/li>\n<li>Digital handshaking<\/li>\n<li>Trigger generation<\/li>\n<li>Pass\/fail indicators<\/li>\n<\/ul>\n<h3>Counter and Timer Applications<\/h3>\n<p>\nThe PCI-6281 provides two 32-bit counters\/timers for hardware-timed digital measurements and generation.\n<\/p>\n<p>\nCounter functions can support applications involving:\n<\/p>\n<ul>\n<li>Frequency<\/li>\n<li>Period<\/li>\n<li>Pulse width<\/li>\n<li>\u041f\u043e\u0434\u0441\u0447\u0435\u0442 \u0441\u043e\u0431\u044b\u0442\u0438\u0439<\/li>\n<li>Encoder signals<\/li>\n<li>Pulse trains<\/li>\n<li>Digital timing<\/li>\n<\/ul>\n<h3>Hardware Triggering<\/h3>\n<p>\nHardware triggering is important when acquisition must begin in response to a specific electrical event.\n<\/p>\n<p>\nThe PCI-6281 can participate in triggered measurement architectures for applications such as:\n<\/p>\n<ul>\n<li>Transient capture<\/li>\n<li>Automated device testing<\/li>\n<li>Event-based data acquisition<\/li>\n<li>Synchronized measurements<\/li>\n<li>Repeatable laboratory experiments<\/li>\n<\/ul>\n<h3>PCI-6281 vs PXI-6281<\/h3>\n<p>\nThe PCI-6281 and PXI-6281 provide closely related M Series multifunction DAQ capabilities but use different system platforms.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PCI-6281<\/th>\n<th>PXI-6281<\/th>\n<\/tr>\n<tr>\n<td>Platform<\/td>\n<td><strong>PCI<\/strong><\/td>\n<td>PXI<\/td>\n<\/tr>\n<tr>\n<td>Analog Input Resolution<\/td>\n<td>18-Bit<\/td>\n<td>18-Bit<\/td>\n<\/tr>\n<tr>\n<td>Analog Input Channels<\/td>\n<td>16 SE \/ 8 Differential<\/td>\n<td>16 SE \/ 8 Differential<\/td>\n<\/tr>\n<tr>\n<td>Analog Output Channels<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u0432\u0432\u043e\u0434-\u0432\u044b\u0432\u043e\u0434<\/td>\n<td>24<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>Counters\/Timers<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>Installation<\/td>\n<td>Desktop \/ Industrial PC<\/td>\n<td>PXI \u0428\u0430\u0441\u0441\u0438<\/td>\n<\/tr>\n<tr>\n<td>Best Application<\/td>\n<td>PC-Based DAQ<\/td>\n<td>Modular PXI Test Systems<\/td>\n<\/tr>\n<\/table>\n<h3>PCI-6281 vs USB-6281<\/h3>\n<p>\nThe PCI-6281 and USB-6281 belong to the same high-accuracy M Series DAQ family but use different host interfaces.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PCI-6281<\/th>\n<th>USB-6281<\/th>\n<\/tr>\n<tr>\n<td>Host Interface<\/td>\n<td><strong>PCI<\/strong><\/td>\n<td>USB 2.0<\/td>\n<\/tr>\n<tr>\n<td>Analog Input Resolution<\/td>\n<td>18-Bit<\/td>\n<td>18-Bit<\/td>\n<\/tr>\n<tr>\n<td>Maximum Single-Ended AI<\/td>\n<td>16<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>Maximum Differential AI<\/td>\n<td>8<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u0432\u0432\u043e\u0434-\u0432\u044b\u0432\u043e\u0434<\/td>\n<td>24<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>Counters\/Timers<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>Installation<\/td>\n<td>Internal PC Card<\/td>\n<td>External USB Device<\/td>\n<\/tr>\n<tr>\n<td>Best Application<\/td>\n<td>Permanent PC-Based Systems<\/td>\n<td>Portable \/ External DAQ Systems<\/td>\n<\/tr>\n<\/table>\n<h3>PCI-6281 vs PCI-6280<\/h3>\n<p>\nThe PCI-6281 and PCI-6280 are both high-accuracy M Series DAQ devices. The PCI-6281 adds analog output capability, making it better suited to applications requiring both acquisition and analog signal generation.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PCI-6281<\/th>\n<th>PCI-6280<\/th>\n<\/tr>\n<tr>\n<td>Analog Input Resolution<\/td>\n<td>18-Bit<\/td>\n<td>18-Bit<\/td>\n<\/tr>\n<tr>\n<td>Analog Input<\/td>\n<td>\u0414\u0430<\/td>\n<td>\u0414\u0430<\/td>\n<\/tr>\n<tr>\n<td>Analog Output<\/td>\n<td><strong>2 Channels<\/strong><\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u0432\u0432\u043e\u0434-\u0432\u044b\u0432\u043e\u0434<\/td>\n<td>24<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>Counters\/Timers<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>Primary Advantage<\/td>\n<td><strong>Multifunction AI + AO<\/strong><\/td>\n<td>Acquisition-Focused Applications<\/td>\n<\/tr>\n<\/table>\n<h3>PCI-6281 vs PCI-6284<\/h3>\n<p>\nBoth the PCI-6281 and PCI-6284 belong to the high-accuracy M Series family. The PCI-6284 provides a larger analog input channel count, while the PCI-6281 is designed for applications requiring fewer analog inputs together with analog output capability.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PCI-6281<\/th>\n<th>PCI-6284<\/th>\n<\/tr>\n<tr>\n<td>Analog Input Resolution<\/td>\n<td>18-Bit<\/td>\n<td>18-Bit<\/td>\n<\/tr>\n<tr>\n<td>Single-Ended Analog Inputs<\/td>\n<td><strong>16<\/strong><\/td>\n<td>32<\/td>\n<\/tr>\n<tr>\n<td>Differential Analog Inputs<\/td>\n<td><strong>8<\/strong><\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>I\/O Connector Architecture<\/td>\n<td>Single VHDCI<\/td>\n<td>Dual VHDCI<\/td>\n<\/tr>\n<tr>\n<td>Primary Advantage<\/td>\n<td>Compact Multifunction Measurement<\/td>\n<td><strong>Higher Analog Input Channel Count<\/strong><\/td>\n<\/tr>\n<\/table>\n<h3>68-Pin VHDCI Connectivity<\/h3>\n<p>\nThe PCI-6281 uses a <strong>68-pin VHDCI<\/strong> I\/O connection.\n<\/p>\n<p>\nThe appropriate NI cable and terminal block should be selected according to the required signal connections, shielding, mounting method, and application environment.\n<\/p>\n<p>\nBefore purchasing accessories, verify compatibility with the PCI-6281 rather than selecting accessories only by connector appearance.\n<\/p>\n<h3>Signal Conditioning<\/h3>\n<p>\nSome sensors cannot be connected directly to a multifunction DAQ device and require signal conditioning.\n<\/p>\n<p>\nDepending on the sensor and application, signal conditioning may provide:\n<\/p>\n<ul>\n<li>Amplification<\/li>\n<li>Filtering<\/li>\n<li>\u0418\u0437\u043e\u043b\u044f\u0446\u0438\u044f<\/li>\n<li>Sensor excitation<\/li>\n<li>Voltage attenuation<\/li>\n<li>Current-to-voltage conversion<\/li>\n<li>Sensor-specific linearization<\/li>\n<\/ul>\n<p>\nThe signal-conditioning architecture should be selected according to the sensor output and measurement requirements.\n<\/p>\n<h3>NI-DAQmx Software<\/h3>\n<p>\nThe PCI-6281 uses <strong>\u041d\u0418-DAQmx<\/strong> for hardware configuration and application development.\n<\/p>\n<p>\nNI-DAQmx provides functionality for:\n<\/p>\n<ul>\n<li>Device configuration<\/li>\n<li>Analog input acquisition<\/li>\n<li>Analog output generation<\/li>\n<li>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u0432\u0432\u043e\u0434-\u0432\u044b\u0432\u043e\u0434<\/li>\n<li>Counter\/timer operations<\/li>\n<li>Timing configuration<\/li>\n<li>Hardware triggering<\/li>\n<li>Calibration information<\/li>\n<li>Device diagnostics<\/li>\n<\/ul>\n<h3>LabVIEW Integration<\/h3>\n<p>\nThe PCI-6281 can be integrated into LabVIEW-based measurement and automated test applications using compatible NI-DAQmx software.\n<\/p>\n<p>\nA typical application workflow is:\n<\/p>\n<p>\n<strong>Configure Channels \u2192 Configure Timing \u2192 Configure Trigger \u2192 Start Acquisition \u2192 Read Data \u2192 Analyze \u2192 Log Results<\/strong>\n<\/p>\n<h3>Legacy System Replacement<\/h3>\n<p>\nThe PCI-6281 is particularly relevant for maintaining existing test systems built around conventional PCI computers.\n<\/p>\n<p>\nWhen replacing a failed PCI-6281 or migrating an older system, verify:\n<\/p>\n<ul>\n<li>PCI slot availability<\/li>\n<li>Operating system compatibility<\/li>\n<li>NI-DAQmx version<\/li>\n<li>LabVIEW version<\/li>\n<li>Existing cable compatibility<\/li>\n<li>Terminal block compatibility<\/li>\n<li>Application source code<\/li>\n<li>Timing and triggering requirements<\/li>\n<li>Analog input configuration<\/li>\n<li>Analog output requirements<\/li>\n<\/ul>\n<h3>How to Choose a Multifunction DAQ Device<\/h3>\n<p>\nBefore selecting the PCI-6281, evaluate:\n<\/p>\n<ul>\n<li>Required analog input resolution<\/li>\n<li>Required sample rate<\/li>\n<li>Number of analog input channels<\/li>\n<li>Single-ended or differential measurements<\/li>\n<li>Required input voltage ranges<\/li>\n<li>Analog output requirements<\/li>\n<li>Digital I\/O requirements<\/li>\n<li>Counter\/timer requirements<\/li>\n<li>Triggering requirements<\/li>\n<li>PCI slot availability<\/li>\n<li>Cable and terminal block requirements<\/li>\n<li>Sensor signal-conditioning requirements<\/li>\n<li>NI-DAQmx compatibility<\/li>\n<li>Operating system compatibility<\/li>\n<\/ul>\n<h3>Industries<\/h3>\n<ul>\n<li>Automated Test<\/li>\n<li>Electronic Validation<\/li>\n<li>Industrial Measurement<\/li>\n<li>Laboratory Automation<\/li>\n<li>Research and Development<\/li>\n<li>Manufacturing Test<\/li>\n<li>Scientific Research<\/li>\n<li>\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432<\/li>\n<li>Education and Research<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<h4>Precision Voltage Measurement<\/h4>\n<p>\nThe 18-bit analog input architecture makes the PCI-6281 suitable for applications requiring precise voltage measurements and high measurement resolution.\n<\/p>\n<h4>Sensor Data Acquisition<\/h4>\n<p>\nCompatible sensors and conditioned sensor signals can be acquired through the PCI-6281 for monitoring, research, and automated testing.\n<\/p>\n<h4>Automated Test<\/h4>\n<p>\nAnalog input, analog output, digital I\/O, counters, and triggering can be combined to build multifunction automated test systems.\n<\/p>\n<h4>Laboratory Automation<\/h4>\n<p>\nThe PCI-6281 can acquire experimental data while controlling external equipment through analog and digital signals.\n<\/p>\n<h4>Electronic Validation<\/h4>\n<p>\nEngineers can use the PCI-6281 for voltage monitoring, stimulus generation, digital control, and timing measurements during electronic device validation.\n<\/p>\n<h4>Manufacturing Test<\/h4>\n<p>\nThe multifunction architecture supports automated production test applications requiring measurement, control, timing, and pass\/fail evaluation.\n<\/p>\n<h3>Recommended Related Products<\/h3>\n<table>\n<tr>\n<td width=\"220\"><strong>PCI-6281<\/strong><\/td>\n<td>18-bit multifunction PCI DAQ device with analog input, analog output, digital I\/O, and counters.<\/td>\n<\/tr>\n<tr>\n<td><strong>PXI-6281<\/strong><\/td>\n<td>PXI version for modular test and measurement systems requiring similar high-accuracy M Series DAQ functionality.<\/td>\n<\/tr>\n<tr>\n<td><strong>USB-6281<\/strong><\/td>\n<td>USB-based high-accuracy M Series DAQ option for external and portable measurement systems.<\/td>\n<\/tr>\n<tr>\n<td><strong>PCI-6280<\/strong><\/td>\n<td>High-accuracy PCI M Series DAQ device for applications focused primarily on analog input acquisition.<\/td>\n<\/tr>\n<tr>\n<td><strong>PCI-6284<\/strong><\/td>\n<td>Higher-channel-count 18-bit M Series PCI DAQ device for applications requiring additional analog inputs.<\/td>\n<\/tr>\n<tr>\n<td><strong>PCI-6289<\/strong><\/td>\n<td>High-channel-count M Series multifunction DAQ device for more extensive measurement and control systems.<\/td>\n<\/tr>\n<\/table>\n<h3>Why Choose PCI-6281?<\/h3>\n<ul>\n<li>18-bit analog input resolution<\/li>\n<li>Up to 625 kS\/s analog acquisition<\/li>\n<li>16 single-ended analog inputs<\/li>\n<li>8 differential analog inputs<\/li>\n<li>2 analog output channels<\/li>\n<li>24 digital I\/O lines<\/li>\n<li>Two 32-bit counters\/timers<\/li>\n<li>Analog and digital triggering<\/li>\n<li>PCI host interface<\/li>\n<li>68-pin VHDCI connectivity<\/li>\n<li>NI-DAQmx support<\/li>\n<li>\u0418\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u044f LabVIEW<\/li>\n<li>Suitable for precision measurement<\/li>\n<li>Suitable for automated testing<\/li>\n<li>Suitable for laboratory automation<\/li>\n<\/ul>\n<h3>Frequently Asked Questions<\/h3>\n<h4>What is the NI PCI-6281?<\/h4>\n<p>\nThe NI PCI-6281 is an 18-bit M Series multifunction data acquisition device for PCI-based computers. It combines analog input, analog output, digital I\/O, counters\/timers, and hardware triggering.\n<\/p>\n<h4>What is the analog input resolution of PCI-6281?<\/h4>\n<p>\nThe PCI-6281 provides <strong>18-bit analog input resolution<\/strong>, making it suitable for high-accuracy measurement applications.\n<\/p>\n<h4>What is the maximum sample rate of PCI-6281?<\/h4>\n<p>\nThe PCI-6281 supports analog input sampling rates up to <strong>625 kS\/s<\/strong>.\n<\/p>\n<h4>How many analog input channels does PCI-6281 have?<\/h4>\n<p>\nThe PCI-6281 supports up to <strong>16 single-ended analog inputs or 8 differential analog inputs<\/strong>.\n<\/p>\n<h4>Does PCI-6281 have analog outputs?<\/h4>\n<p>\nYes. The PCI-6281 provides <strong>two analog output channels<\/strong> for programmable signal generation and control applications.\n<\/p>\n<h4>How many digital I\/O lines does PCI-6281 have?<\/h4>\n<p>\nThe PCI-6281 provides <strong>24 digital I\/O lines<\/strong>.\n<\/p>\n<h4>Does PCI-6281 have counters?<\/h4>\n<p>\nYes. The PCI-6281 provides <strong>two 32-bit counters\/timers<\/strong> for frequency, period, event-counting, encoder, pulse-generation, and timing applications.\n<\/p>\n<h4>What connector does PCI-6281 use?<\/h4>\n<p>\nThe PCI-6281 uses a <strong>68-pin VHDCI I\/O connector<\/strong>. Compatible NI cables and terminal blocks should be selected according to the required wiring architecture.\n<\/p>\n<h4>What is the difference between PCI-6281 and PXI-6281?<\/h4>\n<p>\nThe primary difference is the system interface. PCI-6281 installs in a conventional PCI computer, while PXI-6281 installs in a PXI chassis. They provide closely related M Series DAQ functionality.\n<\/p>\n<h4>What is the difference between PCI-6281 and USB-6281?<\/h4>\n<p>\nPCI-6281 is an internal PCI DAQ board, while USB-6281 is an external USB-based DAQ device. The appropriate model depends primarily on the required host interface and system architecture.\n<\/p>\n<h4>What is the difference between PCI-6281 and PCI-6280?<\/h4>\n<p>\nBoth are high-accuracy M Series DAQ devices, but the PCI-6281 includes two analog output channels, making it more suitable for multifunction applications requiring both measurement and analog signal generation.\n<\/p>\n<h4>Can PCI-6281 be used with LabVIEW?<\/h4>\n<p>\nYes. PCI-6281 can be used in LabVIEW data acquisition and automated test applications through compatible NI-DAQmx software.\n<\/p>\n<h4>What driver does PCI-6281 use?<\/h4>\n<p>\nThe PCI-6281 uses the <strong>\u041d\u0418-DAQmx<\/strong> driver architecture.\n<\/p>\n<h4>Can PCI-6281 measure sensors directly?<\/h4>\n<p>\nIt can directly acquire compatible voltage signals. Sensors requiring excitation, amplification, isolation, filtering, or other signal conditioning require appropriate external signal-conditioning hardware.\n<\/p>\n<h4>Can PCI-6281 be used for differential measurements?<\/h4>\n<p>\nYes. The PCI-6281 supports up to eight differential analog input channels. Differential measurement can be useful when improved common-mode noise rejection is required.\n<\/p>\n<h4>Can PCI-6281 generate analog signals?<\/h4>\n<p>\nYes. Its two analog output channels can generate programmable voltage signals for device excitation, control, stimulus generation, and automated testing.\n<\/p>\n<h4>What should I check before purchasing a PCI-6281?<\/h4>\n<p>\nBefore purchasing, verify the required 18-bit measurement resolution, analog input channel count, sample rate, analog output requirements, digital I\/O, counters, PCI slot availability, 68-pin cable and terminal block compatibility, signal-conditioning requirements, operating system, NI-DAQmx version, and application software compatibility.\n<\/p>\n<h3>\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>NI PCI-6281 M Series Multifunction DAQ<\/strong> combines high-resolution 18-bit analog acquisition with up to 16 single-ended or 8 differential analog inputs, two analog outputs, 24 digital I\/O lines, two 32-bit counters\/timers, and hardware triggering. Its combination of precision measurement and multifunction I\/O makes it well suited for laboratory automation, sensor acquisition, electronic validation, research, manufacturing test, process monitoring, and legacy PCI-based automated test systems.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u041a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0434\u0432\u0443\u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u043a\u0430\u043d\u0430\u043b\u043e\u0432: 24<br \/>\n\u041f\u0438\u0442\u0430\u043d\u0438\u0435 \u043e\u0442 \u0448\u0438\u043d\u044b<br \/>\n\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043e\u0434\u043d\u043e\u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u0445 \u0430\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u044b\u0445 \u0432\u0445\u043e\u0434\u043e\u0432: 16<br \/>\nNumber of Counters\/Timers: 2<br \/>\n\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0434\u0438\u0444\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0430\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u044b\u0445 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u043a\u0430\u043d\u0430\u043b\u043e\u0432: 8<br \/>\nAnalog Input Absolute Accuracy: 980 \u03bcV<br \/>\n\u0420\u0430\u0437\u043c\u0435\u0440 FIFO \u0431\u0443\u0444\u0435\u0440\u0430 \u0430\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u043e\u0433\u043e \u0432\u0432\u043e\u0434\u0430: 2047 \u0432\u044b\u0431\u043e\u0440\u043e\u043a<br \/>\nMaximum Sample Rate: 625 kS\/s<br \/>\n\u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0432\u044b\u0431\u043e\u0440\u043a\u0430: \u041d\u0435\u0442<br \/>\n\u0412 \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0442 \u0432\u0445\u043e\u0434\u0438\u0442: \u0414\u0430<br \/>\nAnalog Input Resolution: 18 bits<br \/>\nBus Connector: PCI<br \/>\nFront Connection Type: VHDCI(1)<br \/>\n\u0427\u0438\u0441\u043b\u043e \u0430\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u044b\u0445 \u0432\u044b\u0445\u043e\u0434\u043d\u044b\u0445 \u043a\u0430\u043d\u0430\u043b\u043e\u0432: 2<br \/>\nMaximum Analog Update Rate: 2.86 MS\/s<br \/>\nBus Connection: PCI<\/p>","protected":false},"featured_media":31113,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[752],"product_tag":[],"class_list":["post-28467","product","type-product","status-publish","has-post-thumbnail","product_cat-data-acquisition-devices","first","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NI PCI-6281 PCI Multifunction I\/O Device , In Stock | Project Pricing<\/title>\n<meta name=\"description\" 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