Frequency Verification - Keithley DMM7510 Calibration Manual

Section 2: Performance verification
-- *********************************************
-- **** Display first reading from buffer
-- *********************************************
display.clear()
display.changescreen(display.SCREEN_USER_SWIPE)
display.settext(display.TEXT1, "Analog trigger")
num7 = buf.readings[1]
str7 = string.format('%3.4e', num7)
display.settext(display.TEXT2, str7) print(num7)

Frequency verification

To verify the Model DMM7510 frequency function:
1. Connect the Keysight Technologies 33250A function generator to the Model DMM7510 INPUT HI
and LO terminals, as shown in the following figure.
2. Set the function generator output impedance to High, amplitude of 5 V
square wave.
3. Enable the output.
4. On the Model DMM7510, press the FUNCTION key, select the Measure Functions tab, and
select Frequency.
5. Select the MENU key.
6. Select Measure Settings.
7. Set the Aperture to 250 ms.
8. Set the Threshold Range to 10 V.
9. Set the Threshold Level to 0 V.
10. Press the HOME key.
11. Source the voltage and frequency values as listed in
each setting, be sure that the reading is within low and high limits.
2-32
Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
****
, waveform to
RMS
Verify the frequency (on page 2-33). For
DMM7510-905-01 Rev. A / April 2015