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Encoder and Resolver Signal Conditioners Specifications

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Input Specifications




   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.
   Input Signals       
   Your choices are...
 
      
 
   DC Voltage
 
      
 
   DC Current
 
      
 
   AC Voltage
 
      
 
   AC Current
 
      
 
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   Sampling Frequency (if applicable):
 
     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.
   Excitation       
   Your choices are...
 
      
 
   Voltage Excitation
 
     Device has a voltage output that is meant to power or activate the sensor whose signal the device is receiving.
 
   Current Excitation
 
     Device has a current output that is meant to power or activate the sensor whose signal the device is receiving.
 
   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.
Device Configuration




           
   Your choices are...
 
      
 
   Data Acquisition Computer Board
 
     Self-contained printed circuit board with full data acquisition functionality; typically plugs into a backplane or motherboard, or otherwise interfaces directly with a computer bus.
 
   Input Module
 
     Device (module or card) configured to accept input of sensors, timers, switches, amplifiers, transistors, etc. for use in the data acquisition system.
 
   Signal Filter
 
     Signal filters block or decrease (attenuate) unwanted frequencies or signal wave characteristics.
 
   Instrumentation Amplifier
 
     An instrumentation amplifier is a differential amplifier that has been optimized for use with DC signals. They are typically characterized by high gain, high CMRR, and high input impedance.
 
   Output Module
 
     Module or card with specific functionality for output of amplified, conditioned, or digitized signal.
 
   I/O Module
 
     Module or card with both input and output functionality. Digital or discrete I/O includes on-off signals used in communication, user interface, or control.
 
   Sample-and-Hold Amplifier
 
     Sample-and-hold conditioners "capture" samples of the signal. The signal is quantized to discrete levels and can be sent to conform to any timing parameters of the system. They can use triggers for initiating a sample.
 
   Isolation Amplifier
 
     Isolation amplifiers are specifically designed to isolate high DC levels from the data acquisition device while passing the relatively small AC or differential signal. The inputs and outputs are electrically isolated.
 
   Signal Isolator
 
     Signal isolation is the separation of any direct electrical contact of a signal. This can be done in various ways including optical isolation, capacitors, and magnetic induction.
 
   Multiplexer
 
     Handles several inputs and serially combines them into one output for transmission. Some multiplexers perform the reverse function.
 
   Bridge Conditioner
 
     Bridge conditioners provide excitation for and support of Wheatstone bridge style sensors such as quarter, half, or full bridge accelerometers.
 
   Analog-to-Digital Converter
 
     A/D Converters (ADC) sample an analog signal and convert it to a series of digital values to represent the signal to a computer processor.
 
   Digital-to-Analog Converter
 
     A DAC is an electronic device, often an integrated circuit, that converts a digital number into a corresponding analog voltage or current.
 
   Frequency Converter / Translator
 
     Converts or scales input frequency to desired output frequency value.
 
   Voltage Converter / Inverter
 
     A voltage converter accepts voltage input and provides a scaled voltage output. Conversion types include scaling up a low-level signal, voltage doubling, and inversion (converting a positive voltage to negative and vice versa).
 
   Frequency-to-Voltage Converter
 
     Analog voltage output is a function of the input signal frequency.
 
   Voltage-to-Frequency Converter
 
     Output signal frequency is a function of the input signal voltage. Output type can include sine wave, pulse train, or pulse width modulation (PWM).
 
   Current-to-Voltage Converter
 
     Output signal voltage is a function of the input current.
 
   Current Loop Converter
 
     Converts an analog or digital signal to a current loop output such as 4-20mA or 0-20mA.
 
   Charge Converter
 
     Converts the charge output from a piezoelectric or other charge-producing sensor to a signal such as analog voltage or current.
 
   Other
 
     Unlisted or specialized signal conversion or conditioning function.
 
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Form Factor




   Form Factor       
   Your choices are...
 
      
 
   Integrated Circuit (IC)
 
     Devices are integrated circuit (IC) chips that mount on printed circuit boards (PCBs).
 
   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.
 
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User Interface




   User Interface       
   Your choices are...
 
      
 
   None
 
     No user input or programmability; "black box" style of storage for download or processing elsewhere.
 
   Front Panel & Display
 
     Integral controls, keypad, and/or display on the panel of the unit.
 
   Touch Screen
 
     The device's visual display screen is contact sensitive to allow direct input.
 
   Hand-held / Remote Programmer
 
     Interface unit specifically meant to hold in hand while entering program parameters; may include remote programming.
 
   Computer Programmable
 
     Device is interfaced to a separate supervisory or host computer.
 
   Other
 
     Any unlisted user interface method.
 
   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.
Connection to Host




   Connection to Host       
   Your choices are...
 
      
 
   Direct Backplane Interface
 
     The circuit board installs directly into a computer motherboard or backplane.
 
   RS232
 
     Interface between data terminal equipment and data communications equipment employing serial binary data interchange.
 
   RS422
 
     RS422 is a balanced serial interface for the transmission of digital data. It was designed for greater distances and higher Baud rates than RS232.
 
   RS485
 
     RS485 is a balanced serial interface for the transmission of digital data. The advantage of a balanced signal is the greater immunity to noise. The difference between RS422 and RS485 is that RS485 can be transformed into a multi-point application.
 
   USB
 
     Universal Serial Bus. The standard serial bus for low-to-medium speed peripheral device connections to Personal Computers, including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc.
 
   IEEE 1394 (Firewire®)
 
     A companion to USB, IEEE 1394 is a very high-speed serial bus (400 Megabit - 1 Gigabit). It was designed to replace all external high-speed peripheral connections to personal computers, including hard disks, CD-ROM's, DVD's, graphics cards, high-speed scanners, direct video, monitors, etc.
 
   GPIB (IEEE 488, HPIB)
 
     GPIB (General Purpose Interface Bus) is designed to connect computers, peripherals and laboratory instruments so that data and control information can pass between them. It is also known as IEEE 488 or HPIB, and is electrically equivalent to IEC 625 bus.
 
   SCSI
 
     SCSI (Small Computer System Interface) is a parallel interface standard used by Apple Macintosh computers, PCs, and many UNIX systems for attaching peripheral devices to computers.
 
   TTL
 
     Transistor-transistor logic, 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
 
     A channel capable of transferring more than one bit simultaneously; parallel communication protocols include GPIB / IEEE-488 / HPIB Protocol.
 
   Ethernet
 
     A local-area network (LAN) protocol developed by Xerox Corporation in cooperation with DEC and Intel in 1976. Ethernet 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.
 
   Modem
 
     Modulator-demodulator. A modem is a device or program that enables a computer to transmit data over telephone lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between these two forms.
 
   Radio / Telemetry
 
     Communication from data acquisition device to host or storage unit via radio transmission.
 
   Other
 
     Unlisted, specialized, or proprietary communication configuration.
 
   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.
Features




           
   Your choices are...
 
      
 
   Integral Filter
 
     A filter will allow certain signal frequencies to pass while attenuating others. Filters can operate on signal phase also.
 
   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.
 
   Programmable Filter
 
     Filter parameters such as cutoff frequencies may be interactively programmed by user.
 
   Programmable Gain Amplifier
 
     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.
 
   Networkable
 
     Device is designed to communicate with or be a node of a digital network.
 
   Application Software
 
     Included compatible software for control or for monitoring data acquisition or signal conditioning from a supervisory or host computer.
 
   Web Enabled
 
     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:      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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