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Analog Input Channels:

Differential Channels?

Digital I/O Channels:

Sampling Frequency:

Resolution:

bits

Accuracy:

% FS

Isolation:

Interface:

Transmission Rate:

Web Enabled?

Form Factor:

DC Voltage Input?

DC Current Input?

AC Voltage Input?

AC Current Input?

Frequency Input?

Charge Input?

Accelerometer Input?

Thermocouple Input?

Thermistor Input?

RTD Input?

Strain Gauge / Bridge Input?

LVDT / RVDT Input?

Encoder Input?

Counter / Tachometer Input?

Timer / Clock Input?

Relay / Switch Input?

Other Input?

Voltage Excitation Supply?

Current Excitation Supply?

Application:

Application Software Included?

RAM / On-board Memory:

Data Storage:

Networkable System?

Network Options:

Integral Filter?

Filter Architecture:

Number of Poles:

Filter Function:

Filter Type:

Low Pass Cutoff Frequency:

High Pass Cutoff Frequency:

Anti-aliasing Filter?

Programmable Filter?

Integral Amplifier?

Programmable Gain?

Bandwidth:

Input Impedance:

Common Mode Rejection Ratio:

dB

Operating Temperature:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Vibration Rating:

Shock Rating:

Help with Data Input Modules specifications:

Device Specifications
   Analog Input Channels:       This is the maximum number of analog channel inputs. The single-ended number is specified when single-ended inputs are available as twice the number of differential inputs. Differential channels use the difference between two signals as an input; common mode is filtered out. In some systems, differential inputs are combinations of two single-ended inputs. When this is the case, twice the number of differential channels are available as single-ended inputs. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Differential Channels       Differential channels have two inputs. The signal to process is the voltage (V) difference between the two inputs. For example, if one reading is 4.93 V and the other reading is 5.16 V, the meaningful value is the 0.23 V difference between the two. Often, this applies to precision measurements where the difference between two low-voltage inputs is small but critical. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Digital I/O Channels       Digital or discrete channels are used for low-level on-off signals used in applications such as communication, user interface, or control. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Sampling Frequency       Sampling frequency is the frequency of analog signal sampling and conversion to a digital value. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Resolution       Resolution refers to the degree of fineness of the digital word representing the analog value. A ten-bit number contains 210, or 1024, increments. A 0-10V signal could therefore be resolved into approximately 0.01V increments. A 12-bit representation would be in 212 (4096) increments, or divisions of 0.0024V for the same signal. Each additional bit doubles the resolution, and one bit is required for the polarity (sign) of a number. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Accuracy       Accuracy depends on the signal conditioning linearity, hysteresis, temperature considerations, etc. It is represented here as percent full scale of measurement range. 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Isolation       
   Your choices are...         
   Isolated Digital Input       The digital input voltage terminals are isolated. 
   Isolated Analog Voltage Input       The input voltage terminals are isolated. 
   Other       Other unlisted types of isolation. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Memory and Storage
   RAM / On-board Memory:       Products use random access memory (RAM) or provide memory for control software or function/program loading.  
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Data Storage       Products have data storage capacity, typically with a hard drive. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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Network Specifications
   Networkable System?       Devices are designed to communicate with or be a node of a digital network. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Network Options:       
   Your choices are...         
   Beckhoff I/O       Beckhoff I/O is a communications system that couples open fieldbus protocols to Beckhoff's bus terminal I/O. This allows connectivity to a large variety of devices on the bus terminal (K-bus). 
   IEEE 1394 (FireWire®)       IEEE 1394 or FireWire® is an interface standard adopted by the Institute of Electrical and Electronics Engineers (IEEE) for very fast digital data transfers such as streaming video. IEEE 1394 connectors are used to transmit and receive data among FireWire devices, and are designed to replace external high-speed peripheral connections to personal computers, including hard disks, CD-ROMs, DVDs, graphics cards, high-speed scanners, direct video, monitors, etc. Tiny, robust FireWire connectors will also become important parts of home entertainment, communication, and appliance networks. FireWire is a registered trademark of Apple Computer, Inc.  
   Other       Other unlisted or proprietary networks. 
   Ethernet       Ethernet is a local area network (LAN) protocol that uses a bus or star topology, and supports data transfer rates of 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. Ethernet uses the CSMA/CD access method to handle simultaneous demands. It is one of the most widely implemented LAN standards. 
   CANbus       CANbus is a high-speed serial data network engineered to exist in harsh electrical environments. 
   DeviceNet       DeviceNet is a network designed to connect industrial devices such as limit switches, photoelectric cells, valve manifolds, motor starters, drives, and operator displays to PLCs and PCs. The network eliminates hard wiring while providing device-level diagnostics. 
   SDS       Smart distributed system (SDS) is an advanced bus system for intelligent sensors and actuators using CAN-based technology. 
   Foundation Fieldbus       Foundation Fieldbus is a bi-directional communications protocol used for communications among field instrumentation and control systems. 
   PROFIBUS       PROFIBUS is a vendor-independent, open-field bus standard used in a wide variety of manufacturing and process automation applications. 
   SERCOS       SERCOS (serial real-time communications system) is an open controller-to-intelligent digital drive interface specification. It is designed for high-speed serial communication of standardized, closed-loop data in real time, over a noise-immune fiber optic cable. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Filter Specifications
   Integral Filter?       Integral filters allow certain signal frequencies to pass while attenuating others. These filters can also operate on signal phase. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Filter Architecture:       
   Your choices are...         
   Analog (RC)       Analog filters are designed with resistors and capacitors. They are used for analog signals only, and are often used in low-noise requirement applications. 
   Digital (FIR, IIR)       Digital filters are designed with solid-state components, and used for digital signals and quantized signals from a sample-and-hold amplifier. This category includes finite impulse response (FIR) and infinite impulse response (IIR) filters. Digital filtering can approach ideal bandpass characteristics. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Number of Poles:      Poles are a measure of complexity of the filter circuitry. In general, more poles will provide a steeper roll-off for a given filter type.
   Your choices are...         
   2         
   4         
   6         
   8         
   Other         
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Filter Function:       
   Your choices are...         
   Low Pass       Low pass filters block or attenuate signals at frequencies above the specified cutoff frequency. 
   High Pass       High pass filters block or attenuate signals at frequencies below the specified cutoff frequency. 
   Band Pass       Band pass filters block or attenuate signals at frequencies outside of the specified low pass and high pass cutoff frequencies. This is frequently done by combining or "cascading" low-pass and high-pass filters. 
   Band Stop       Band stop filters block a portion of the frequency spectrum, allowing lower and higher frequencies to pass. 
   All Pass       All-pass filters allow all frequencies to pass; they can be used to introduce desired phase shifts in signals. 
   Other       Other unlisted or specialized filter forms. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Filter Type:       
   Your choices are...         
   Bessel       Bessel filters have a relatively flat bandpass and slow roll-off. The stopband is fairly monotonic (ripple-free). Their circuitry is complex compared to other filters. 
   Butterworth       Butterworth filters provide a very flat response. There is almost no attenuation in the bandpass. The roll-off rate is somewhat slower than other filters. 
   Cauer (Elliptic)       Cauer or elliptic filters provide the fastest roll-off for a given order (number of poles). The pass band and stop band will typically have ripples. 
   Chebyshev       Chebyshev filters provide a very fast roll-off, but at the expense of a rippled pass band. 
   Linear Phase       Linear phase response filters preserve the phase characteristics of a signal by time-delaying the signal components equally. 
   Other       Other filter types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Low Pass Cutoff Frequency       The low pass cutoff frequency is the nominal frequency below which the input signal is passed and above which the signal is blocked. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   High Pass Cutoff Frequency       The high pass cutoff frequency is the nominal frequency above which the input signal is passed and below which the signal is blocked. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Anti-aliasing Filter?       Aliasing is the misrepresentation of a signal that comes from an improperly slow sampling of a signal. An anti-aliasing filter generally has a sharper cutoff than a normal low-pass filter to reduce this misrepresentation due to the influence of frequencies higher than desired. It is specified according to the sampling rate of the system and there should be one filter per input signal. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Programmable Filter?       Filter parameters such as cutoff frequencies may be interactively programmed by the user. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Amplifier Specifications
   Integral Amplifier?       Amplifiers multiply a signal to the matching scale of the input device. Amplifier gains, or multiplication factors, may be greater than one or fractional for signal reduction. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Programmable Gain?       Amplifier gain may be adjusted according to the application needs. Adjustment may be from a local interface (such as a front panel) or from a computer interface. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Bandwidth       Bandwidth is the difference between the high and low limits of the frequency response, typically defined by a variation from a nominal value by a stated value such as 3 dB. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Input Impedance       Impedance (Z) is the resistance to alternating signal flow and is a result of the resistance, capacitance, and the inductance of the circuitry of a device. Input impedance of an amplifier is the equivalent impedance that the signal input sees. Input impedance is typically specified to be much greater than the impedance of a sensor whose signal it is amplifying. Some applications, such as in the power and acoustic fields, require impedance matching of devices. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Common Mode Rejection Ratio:       The ability of an amplifier to obtain the difference between two inputs while rejecting the signal common to both is defined by the common mode rejection ratio (CMRR) and the common mode range. The simplest mathematical definition of CMRR is: CMRR = 20 log (differential gain / common mode gain) 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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Environment
   Operating Temperature       Full required range of ambient operating temperature. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Vibration Rating       Maximum vibration that the device can withstand and still meet performance specifications. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Shock Rating       Maximum shock that the device can withstand and still meet performance specifications. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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Interface
   Interface       
   Your choices are...         
   Direct Backplane Interface       The circuit board installs directly into a computer motherboard or backplane. 
   RS232/422/485       RS232/422/485 is an interface between data terminal equipment (DTE) and data communications equipment (DCE) employing serial binary data interchange. 
   USB       Universal serial bus (USB) is a 4-wire, 12-Mbps serial bus for low-to-medium speed peripheral device connections to personal computers (PC), including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc. The USB design is standardized by the USB Implementers Forum (USBIF), an organization that includes leading companies from the computer and electronics industries. The current USB specification is USB 2.0, which supports data transfer rates of up to 480 Mbps. 
   IEEE 1394 (FireWire®)       IEEE 1394 or FireWire® is an interface standard adopted by the Institute of Electrical and Electronics Engineers (IEEE) for very fast digital data transfers such as streaming video. IEEE 1394 connectors are used to transmit and receive data among FireWire devices, and are designed to replace external high-speed peripheral connections to personal computers, including hard disks, CD-ROMs, DVDs, graphics cards, high-speed scanners, direct video, monitors, etc. Tiny, robust FireWire connectors will also become important parts of home entertainment, communication, and appliance networks. FireWire is a registered trademark of Apple Computer, Inc.  
   GPIB       The general-purpose interface bus (GPIB) is designed to connect computers, peripherals, and laboratory instruments so that data and control information can pass between them. It was originally developed by Hewlett Packard (HP) and called the HPIB bus. GPIB is also known as the IEEE 488 bus, and is electrically equivalent to the IEC 625 bus.   
   SCSI       Small computer systems interface (SCSI) is an intelligent I/O parallel peripheral bus with a standard, device-independent protocol that allows many peripheral devices to be connected to the SCSI port. A single SCSI bus can drive up to eight devices or units: the host adapter or controller, and seven other devices. Each device is assigned a different SCSI ID, ranging from 0 to 7.  SCSI formats include SCSI-1, SCSI-2, SCSI-3, Wide SCSI, Fast SCSI, Wide Fast SCSI, Ultra SCSI, Ultra2 SCSI, Ultra3 SCI (Ultra160), Ultra 320 SCSI, and Ultra640 SCSI. 
   TTL       Transistor-transistor logic (TTL) is a common type of digital circuit in which the output is derived from two transistors. More commonly, however, TTL is used to designate any type of digital input or device. 
   Parallel Interface       Parallel interface channels are capable of transferring more than one bit simultaneously. Parallel communications protocols include GPIB (IEEE-488, HPIB). 
   Ethernet       Ethernet is a local area network (LAN) protocol that uses a bus or star typology and supports data transfer rates of 10 Mbps. The Ethernet specification is the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. To handle simultaneous demands, Ethernet uses carrier sense multiple access/collision detection (CSMA/CD) to monitor network traffic. 
   Modem       Modems (modulator-demodulators) are devices or programs that enable a computer to transmit data over telephone lines. Computer information is stored digitally, whereas information transmitted over telephone lines is sent in the form of analog waves. A modem converts between these two forms. 
   Radio / Telemetry       Communication from the data acquisition device to a host or storage unit is achieved via radio transmission. 
   Other       Other unlisted, specialized, or proprietary communication configurations. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Transmission Rate       Transmission speed in bits per second. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Web Enabled?       The device contains hardware and software protocols such as hypertext transfer protocol (http) or Web access protocol (WAP) for being addressable to, or a node of, the World Wide Web for remote monitoring or communication. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Form Factor
   Form Factor       
   Your choices are...         
   Printed Circuit Board (PCB)       Devices are printed circuit boards (PCBs) that attach to enclosures or plug directly into computer backplanes. 
   Panel / Chassis Mount       Devices attach to a panel or bolt onto a chassis. 
   Modular Bay / Slot System       Devices stack in modular bays or slots, and can be interfaced to other units. 
   Rack Mount       Devices are rack-mounted and fit inside enclosures such as a standard 19” telecommunications rack. 
   DIN Rail       Devices mount on a standard DIN rail. DIN is an acronym for Deutsches Institut für Normung (DIN), a German national organization for standardization. 
   Stand Alone       Devices are benchtop or floor-standing units with a full casing or cabinet, and an integral interface. 
   Other       Other unlisted form factors. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Signal Inputs
   DC Voltage Input         
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   DC Current Input?         
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   AC Voltage Input?         
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   AC Current Input?         
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Frequency Input?       Input for varying frequency, pulse, or other specialized waveform. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Charge Input?       Charge is the output of a piezoelectric device. A charge signal typically requires filtering and amplification. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Sensor Inputs
   Accelerometer Input       The inputs are specifically for an accelerometer, such as a piezoelectric or current-fed sensor. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Thermocouple Input       The inputs are for a thermocouple or thermocouple series. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Thermistor Input       Inputs for thermistors and potentiometers handle variable resistance as a function of the process being measured. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   RTD Input       The inputs are designed for a resistance temperature detector (RTD). 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Strain Gauge / Bridge Input       The inputs are designed for a Wheatstone bridge, in full, half, or quarter bridge configurations. Strain gauges are sensors which commonly use Wheatstone bridges. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   LVDT / RVDT Input       The inputs are for a linear (LVDT) or rotary (RVDT) variable differential transformer. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Specialized & Other Inputs
   Encoder Input?       Inputs for an encoder signal such as binary, gray, or binary-coded decimal (BCD). 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Counter / Tachometer Input?       Typically, the inputs from counters or tachometers are one signal per cycle counts. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Timer / Clock Input?       Inputs for any type of time signal. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Relay / Switch Input?       Inputs for a discrete, on/off signal from an exterior device. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Other Input?       Other unlisted or specialized inputs. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Excitation
   Voltage Excitation Supply?       Devices have a voltage output that is meant to power or activate the sensor whose signal the device is receiving. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Current Excitation Supply?       Devices have a current output that is meant to power or activate the sensor whose signal the device is receiving. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Application
   Application       
   Your choices are...         
   General Lab and Industrial       Products are designed for general laboratory and industrial data acquisition systems. Hardening against weather, shock, extreme heat, and other unusual conditions are not necessary. 
   Environmental       Products are designed for use in environmental applications such as groundwater monitoring or pollution measurement. 
   Vehicular       Products are designed for applications involving vehicular motion, and include provisions for factors such as high speed, shock, etc. 
   Marine       Products are designed for use in water or salt water applications. 
   Aerospace / Military       Products are designed for use in aviation, aerospace, or other military or defense applications, including associated technical or military standards. 
   Seismic / Geotechnical       Products are designed for use in seismic applications such as earthquake or volcano research, or in industries such as mining. 
   Weather / Meteorology       Products are designed to handle weather or atmospheric data, and may include weatherproofing. 
   Medical / Biomedical       Products are designed for use in medical, biomedical, pharmaceutical, or surgical applications. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Software
   Application Software Included?       Products include compatible software for control, or for monitoring data acquisition and signal conditioning from a supervisory or host computer. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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