Voltage Dividers and Voltage References Specifications

Help with Voltage Dividers and Voltage References specifications:

Form / Technology

	Form / Technology
	Your choices are...
	Standard		Standards provide a highly accurate standard value of resistance, capacitance, inductance, voltage, or other electrical parameter for calibration and testing.  Standards usually consist of a single, fixed-value component or several components not in the same circuit.  Some standards are available that are continuously variable; often, they incorporate a potentiometer.  Standards that have more than one component (e.g., several fixed-value resistors) have multiple posts or a rotary switch to select different resistance values.
	Decade Box / Substituter		Decade boxes, decades or decade substituters provide highly accurate and digitally variable standard values of resistance, capacitance, inductance, or combinations of these electrical parameters for calibration and testing. Decade boxes usually consist of several components (e.g., resistors) within the same circuit. The standard resistance value is selected by varying of the number resistors in the series or parallel circuit.
	Digital Potentiometer / Bridge		The device is a rheostat or potentiometer, or a rheostat or potentiometer is an integral part of the device (or integral option).
	Voltage Divider		Voltage dividers are the equivalent of digital potentiometer with a variable potentiometer (in series) for fine-tuning.  Voltage dividers provide a highly accurate ratio (Vout / Vin) of voltage and current for calibration and testing using a very accurate potentiometer in combination with a series of fixed resistors. Kelvin-Varley voltage dividers use a bridge circuit with two standard value resistors.  The ratio of the resistance value determines the voltage or current ratio that is provided.
	Thermocouple Simulator		Thermocouple simulators output a precise voltage to simulate the millivolt potential of K, J, R, or other thermocouple junctions.
	Other		Other unlisted forms or categories.
	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.

Back to Top

General / Operating Specifications

	Decades		The number of decades available in the decade box.
	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.
	Temperature Coefficient		The temperature coefficient parameter measures the rate at which the nominal resistance value changes as a function of temperature. It is expressed in parts-per million per degree Celsius (ppm/C).
	Search Logic:		All matching products will have a value less than or equal to the specified value.
	Operating Temperature		This is the full-required range of ambient operating temperature.
	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.
	Stability		The stability in terms of accuracy over a period of a year.
	Search Logic:		All matching products will have a value less than or equal to the specified value.

Back to Top

Voltage & Current Specifications

	Input Voltage Range:		The maximum operating or input voltage of the component or instrument.
	Search Logic:		All matching products will have a value greater than or equal to the specified value.
	Output Voltage Range:		The maximum output voltage of the voltage source.
	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.
	Voltage Accuracy		The voltage accuracy or tolerance of the voltage or current source.
	Search Logic:		All matching products will have a value less than or equal to the specified value.
	Voltage Resolution (per Step)		Resolution is the digital value represented by one bit in the display in a digital measure.  For example, a decade box where one bit on the display represents 10 amps has a resolution of 10 amps (also, amps/step or least significant digit <LSD>).
	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.
	Current Range		The output current range of the voltage or current source.
	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.
	Current Accuracy		The current accuracy or tolerance of the voltage or current source.
	Search Logic:		All matching products will have a value less than or equal to the specified value.
	Current Resolution (per Step)		Resolution is the digital value represented by one bit in the display in a digital measure.  For example, a decade box where one bit on the display represents 10 amps has a resolution of 10 amps (also, amps/step or least significant digit <LSD>).
	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.

Back to Top

Features

	Features
	Your choices are...
	NIST / National Lab Traceable		The standard's calibration can be traced to the National Institute of Technology Standards (NIST) or other national laboratory. The standard has been compared to a master standard that was checked against a NIST standard.
	Component / OEM		The standard, source or decade is suitable for use as a precision component in a larger system or product.
	Low Zero / Residual		The standard or decade has low values of zero, offset or residual impedance resistance, inductance or capacitance.
	Measurement / Calibrator		In addition to providing a standard reference value, the instrument can perform precision measurements (measures or reads) for testing or calibration.
	Computer Interface / Programmable		The decade box, voltage divider, or component has a computer interface option for programming, control, or data acquisition.
	Variable (Continuously)		The standard or reference can provide a precise and continuously variable value such as a variable capacitor or potentiometer.
	Stand Alone / Bench		The standard, decade box, or divider is packaged in a case with binding posts.
	Rack Mount		The standard, decade box, or divider is designed or suitable for rack mounting.  Rack-mount units offer options for front and rear outputs.
	Transfer / Laboratory		Transfer, primary, or laboratory-grade standards are used to compare or transfer the accuracies from NIST or national lab certified standards to working standards, sources, simulators and calibrators, or for precision meter calibration.
	Working		Working standards are robust or rugged units for production or in-line testing and calibration. Reference or working standards are compared or verified by the transfer or laboratory standards and are then used for calibration, testing and inspection of other components, meters and instruments.
	Other		Other proprietary, patented or unlisted features.
	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.

Back to Top