Measure frequency of values in statplus
Measure frequency of values in statplus manual#
Measure frequency of values in statplus free#
You can format Measure Values-the formatting is then inherited as the default formatting for all measures. You can display a filter for Measure Names. Measure Values and Measure Names are in most respects like other fields in Tableau: Tableau automatically creates these fields so that you can build certain types of views that involve multiple measures. How you can use Measure Names and Measure Values Use your (Link opens in a new window) account to sign in.
Measure frequency of values in statplus free#
Watch a video: To see related concepts demonstrated in Tableau, watch Measure Names and Measure Values (Link opens in a new window), a 5-minute free training video. The Measure Names field contains the names of all measures in your data, collected into a single field with discrete values. Drag individual measure fields out of the Measure Values card to remove them from the view. The Measure Values field contains all the measures in your data, collected into a single field with continuous values. Mazur, American Technical Publishers.The Data pane always contains a number of fields that do not come from your original data, two of which are Measure Values and Measure Names. Reference: Digital Multimeter Principles by Glen A. If the meter allows for a decoupled frequency measurement, you might also try changing the voltage range to compensate for the noise. For meters without the ac Voltage indicator setting, turn the dial to dc voltage, then press the Hz button again to measure the frequency on the dc voltage setting. When testing VFDs, use the low-pass filter ac V setting for accurate readings. Example: ac variable frequency drives (VFDs) can produce frequency distortions. In some circuits, there may be enough distortion on the line to prevent an accurate frequency measurement.
The Hz symbol should appear in the display to the right of the measurement.
Read the frequency measurement in the display.
With the multimeter still connected to the circuit, press the Hz button.
Read the voltage measurement in the display.
The position of the test leads is arbitrary.
Most digital multimeters power up in Autorange mode, automatically selecting the measurement range based on the voltage present.
If voltage in the circuit is unknown, set the range to highest voltage setting.
Turn the dial to ac voltage (AC Voltage indicator).
The abbreviation Hz should appear to the right of the reading.ĭigital multimeters with a frequency button.
Connect the black test lead first, the red test lead second.
When finished, remove the leads in reverse order: red first, then black.
Then insert the red lead into the V Ω jack.
First insert the black test lead into the COM jack.
Some meters enter the frequency through a secondary function accessed by pushing a button and setting the rotary switch to ac or dc.
It usually shares a spot on the dial with at least one other function.
Measure frequency of values in statplus manual#
Refer to the user’s manual for specific frequency measurement rangesĭigital multimeters with a frequency symbol on the dial If the frequency of the measured voltage is outside of the frequency measurement range, a digital multimeter cannot display an accurate measurement.
Autorange mode: Automatically selects the frequency measurement range.
It provides the same function with voltage, current and resistance.
MIN MAX Recording mode: Permits frequency measurements to be recorded over a specific period.
It can be used to measure frequency when troubleshooting electrical and electronic equipment.
Frequency Counter mode: It measures the frequency of ac signals.
Some digital multimeters include optional modes related to frequency measurement: A five percent reduction in frequency yields a five percent reduction in motor speed. For ac motors, any change in frequency causes a proportional change in motor speed. They may perform abnormally if operated at a different frequency than specified.įor example, an ac motor designed to operate at 60 Hz operates slower if the frequency is less than 60 Hz, or faster if frequency exceeds 60 Hz. Circuits and equipment may be designed to operate at a fixed or variable frequency.