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Analog Input Channels:

Differential Channels?

Digital I/O Channels:

Sampling Frequency:

RAM / On-board Memory:

Resolution:

bits

Accuracy:

% FS

Computer Bus:

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?

Voltage Output?

Current Output?

Frequency Output?

Timer / Counter Output?

Relay Output?

Other Output?

Application:

Application Software Included?

Networkable System?

Network Options:

Analog-to-Digital Conversion Type:

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:

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 Acquisition Computer Boards specifications:

Board 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 numbers 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.
   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.
   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.
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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. 
   Gigabit Ethernet       Gigabit Ethernet is a high-speed Ethernet standard from the IEEE 802.3z Gigabit Task Force. 
   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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Analog-to-Digital Conversion Type
   Analog-to-Digital Conversion Type       
   Your choices are...         
   Flash       Flash ADCs apply the input in parallel to many fast comparators whose thresholds are equally spaced throughout the desired input voltage range, typically 1V. At any moment, all the comparators that have thresholds below the input voltage are on, and the rest are off. A series of latching AND gates connect between adjacent comparators so that only the gate at the boundary between the on and off comparators is active. The input clock latches the AND gate outputs, and a pipelined circuit converts this one-out-of-N input to a binary output. Flash ADCs need 2N comparators to generate an N-bit output, and thus they tend to have no more than 6 to 10 output bits. Because the input has to drive all the comparators in parallel, the input capacitance is a major limitation to the bandwidth. The sampling bit synchronizer can often use this input capacitance as one element of the noise filter. 
   Half-flash       Half-flash ADCs determine their output code by digitally combining the results of two sequentially-performed, lower-resolution flash conversions. 
   Integrator       Integrators are ADCs whose output code represents the average value of the input voltage over a given time interval. 
   Delta Sigma (Modulator)       Delta sigma (modulator) is a high-accuracy circuit that samples at a higher rate and lower resolution than is needed and (by means of feedback loops) pushes the quantization noise above the frequency range of interest. This out-of-band noise is typically removed by digital filters. 
   Successive Approximation       Successive approximation ADCs sequentially compare a series of binary-weighted values with an analog input to produce an output digital word in n steps, where n is the bit resolution of the ADC. 
   Voltage-to-Frequency       Voltage-to-frequency ADCs convert an input voltage to an output pulse train with a frequency proportional to the input voltage. Output frequency is determined by counting pulses over a fixed time interval and the voltage is inferred from the known relationship. Voltage-to-frequency conversion has a high degree of noise rejection, because the input signal is effectively integrated over the counting interval. Voltage-to-frequency conversion is commonly used to convert slow and often noisy signals. It is also useful for remote sensing applications in noisy environments. The input voltage is converted to a frequency at the remote location and the digital pulse train is transmitted over a pair of wires to the counter. This eliminates the noise that can be introduced in the transmission of an analog signal over a long distance. 
   Other       Other specialized or unlisted methods of analog-to-digital conversion. 
   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). Among the filters with the most complex circuitry. 
   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 cut-off 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 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.
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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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Computer Bus
   Computer Bus       
   Your choices are...         
   CompactPCI       Compact PCI (cPCI) is a high-performance industrial bus that uses the electrical standards of the PCI bus and is packaged in a Eurocard. Specifications for the CompactPCI bus are developed and maintained by the PCI Industrial Computers Manufacturers Group (PICMG). cPCI buses are used extensively in systems that require high speed data transfers. Examples include data communication routers and switches, real-time machine control, real-time data acquisition, military systems, etc. 
   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.  
   Industry Pack® Bus (IP)       IndustryPack® (IP) is a mezzanine bus that provides input / output (I/O) capabilities in general-purpose computer systems. IndustryPack is both a registered trademark of GreenSpring computers and a specification maintained by the VITA standards organization (VSO) of the American National Standards Institute (ANSI). IP modules are available in two sizes. Single-size modules are 1.8” x 3.9” (45.3 cm2). Double-size modules are 3.6” x 3.9” (90.6 cm2). 
   ISA / EISA       Industry standard architecture (ISA) buses can handle 16-bit data transfers at a clock speed of 8 MHz. They are also capable of handling memory under 16 MB. Extended ISA (EISA) is an enhanced version of the ISA bus. EISA buses run at 8 MHz, are capable of 32-bit data transfers, and can access all memory in the system. 
   MIX Bus       Modular interface extension (MIX) is a high-performance stacking and communications interface for connecting expansion modules to a VMEbus baseboard. The MIX bus supports 32-bit data transfers and DMA transfers. It also provides 4 GB of memory addressing capability. 
   Multibus (I & II)       Multibus is a modular computer-systems architecture used in embedded applications in telecommunications, medical-devices, manufacturing automation, networking, and other market areas. 
   PC/104 (PC/104-Plus, EBX)       PC/104 gets its name from the desktop personal computers designed by IBM (PCs), and from the number of pins used to connect the cards together (104). PC/104 cards are much smaller than ISA-bus cards and stack together eliminating the need for a motherboard, back plane, and/or card cage. PC/104-Plus incorporates the PCI bus into the PC/104 form-factor for faster data transfer. EBX (Embedded Board eXpandable) defines a 5.75" x 8" form factor large enough to implement a powerful single-board computer. It supports PC/104 expansion. 
   PCI       Peripheral component interconnect (PCI) is a local bus system designed for high-end computer systems. PCI buses transfer 32 or 64 bits of data at a clock speed of 33 MHz. They also support 3 to 5 critical peripherals, which are either integrated directly onto the motherboard or added via expansion cards. PCI buses fully support cards that were developed for standard I/O buses. 
   PCMCIA (PC Card)       PCMCIA devices (PC Cards) are credit-card-sized peripherals predominantly used in laptop computers. The PCMCIA adapter takes the place of a COM port on a standard bus. The card is plugged into a 68-pin host socket that is connected either to the motherboard or an expansion bus. An adapter then translates the PCMCIA signals into signals usable by the computer's bus. 
   PXI Bus       PCI extensions for instrumentation (PXI) is a superset of CompactPCI that adds timing and triggering functions, imposes requirements for documenting environmental tests, and establishes a standard Windows®-based software framework. Windows is a registered trademark of the Microsoft Corporation. 
   PMC Bus       PMC is a form factor, not a bus. It is electrically equivalent to the PCI bus, but has a different shape and bus connectors. PMC is designed for rugged applications and provides a secure mounting platform for VME mezzanine boards. 
   STD Bus       STD is often called the "blue collar bus" because of its rugged design and use in industrial and process control applications. There are three STD bus types: STD Z80, STD80, and STD 32. The STD Z80 bus and the STD 80 bus use a 56-pin backplane with 0.125" contact spacing for card interconnection. The STD 32 Bus provides a 32-bit wide data bus to support 8, 16, and 32-bit data transfers. Dynamic bus sizing, which varies the data path size depending on the requirements of the peripheral card being addressed, gives the STD 32 bus added flexibility. 
   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. 
   VMEbus       VMEbus is based on the VME standard, which defines mechanical specifications such as board dimensions, connector specifications and enclosure characteristics, as well as the electronic specifications for sub-bus structures, signal functions, timing, signal voltage levels, and master/slave configurations.  The VMEbus uses 3U and 6U Eurocards, rugged circuit boards that provide a 96-pin plug instead of an edge connector for durability. Several VMEbus varieties are available.  
   VXI / MXI Bus       VME extensions for instrumentation (VXI) are electrical and mechanical standards used mainly with automatic test equipment (ATE). VXI allows equipment from different vendors to work together in a common control and packaging environment. Multisystem extension interface (MXI) is an 8MB/s bus for connection of up to 8 digital devices and expansion boards. 
   Other       Other unlisted, specialized, or proprietary 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.
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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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Outputs
   Voltage Output?       Variable voltage outputs such as 0-10V, ±5V, etc. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Current Output?       Variable current level outputs such as 0-20mA, 4-20 mA current loop, etc. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Frequency Output?       The output is a frequency or pulse signal such as amplitude modulation (AM), frequency modulation (FM), or pulse width modulation (PWM) or control. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Timer / Counter Output?       The output is a counting or timing of measured events. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Relay Output?       With switch-type outputs, the contacts are open or closed depending on the state of one or more of the inputs. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Other Output?       Other unlisted or specialized outputs. 
   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 or 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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