Encoder and Resolver Signal Conditioners Specifications

Help with Encoder and Resolver Signal Conditioners specifications:

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.
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	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):		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.
	Excitation
	Your choices are...
	Voltage Excitation		Devices have a voltage output that is meant to power or activate the sensor whose signal the device is receiving.
	Current Excitation		Devices have a current output that is meant to power or activate the sensor whose signal the device is receiving.
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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 in. 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		There is no user input or programmability. Instead, there is "black box" style of storage for download or processing elsewhere.
	Front Panel and Display		There are integral controls, a keypad, and/or a 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		The interface unit is designed specifically to be held in the hand while the user enters program parameters, and may include remote programming.
	Computer Programmable		The device is interfaced to a separate supervisory or host computer.
	Other		Other unlisted user interface methods.
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Connection to Host

	Connection to Host
	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.
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Features

	Your choices are...
	Integral Filter		Integral filters allow certain signal frequencies to pass while attenuating others. These filters can also operate on signal phase.
	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 the 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		Devices are designed to communicate with or be a node of a digital network.
	Application Software		Products include compatible software for control, or for monitoring data acquisition and signal conditioning from a supervisory or host computer.
	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:		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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