Dmm Calibration Web Page - VTI Instruments Metek EX1202 User Manual


Get button: When clicked, data is immediately pulled from FIFO memory.

Get All checkbox: When enabled, clicking the Get button will retrieve all of the current data.
Once the FIFO is empty, it will stop acquiring retrieving data.

Get Count field: Indicates the number of data points that will be returned when the Get
button is clicked. Should be less than or equal to the FIFO Count.

FIFO Count field: Indicates the number of data points available in the FIFO memory.

Clear Table button: When clicked, all of the data currently in the table is erased.

Clear FIFO button: When clicked, any data points currently stored in the FIFO memory will
be erased.

Save Data button: When clicked, the data in the table can be saved. A .csv file is generated by
default.
DMM C W
ALIBRATION
When the Calibration tab is clicked on the DMM SFP, a screen appears that allows the user to
access the calibration and verification routines used during production test.
Calibration Functions Field
The Calibration Functions field defines the type of calibration which will be performed as well
as they functions which will be calibrated. When Calibration is selected, new calibration
constants (adjustments) are generated and saved. Verification uses the current calibration
constants and verifies that the DMM meets its published 6½ digit specifications. Simple
Verification is similar to Verification, but uses looser specifications. It is useful as a quick
"sanity test" to ensure the hardware is working properly.

Calibration/Verification/Simple Verification drop menu: Select between the Calibration,
Verification, and Simple Verification from menu.

Function sliders: The sliders provided in the Calibration Functions field allow to user to
perform a full calibration/verification or to perform calibration/verification on a subset of the
DMM's functions.
All: Calibration/verification of all functions will be performed when selected. Also causes all
Low Frequency AC: Calculates the adjustment factors that are used in low frequency ac
DC Voltage: Calculates gains and offsets for dc voltage measurements.
DC Current: Calculates gains and offsets for dc current measurements.
AC Voltage DAC: Calculates an adjustment factor for the DAC used in the ac voltage
EX1200 Series Maintenance
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sliders to move to the ON position.
measurements. Note, there is no verification component for this function.
measurement circuit. Note, there is no verification component for this function.
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