Keithley DMM7510

Model DMM7510
7½ Digit Graphical Sampling Multimeter Calibration Manual Section 2:
Performance verification
DMM7510-905-01 Rev. A / April 2015 2-21
-- *********************************************
-- **** Falling Edge slope ****
-- *********************************************
dmm.measure.analogtrigger.edge.slope = dmm.SLOPE_FALLING
dmm.measure.analogtrigger.edge.level = -50e-3
-- *********************************************
-- **** For Measure Functions ****
-- **** Trigger Model setup and ****
-- **** start of triggering ****
-- *********************************************
samp_count=10
buf=buffer.make(samp_count)
trigger.model.setblock(1,trigger.BLOCK_BUFFER_CLEAR, buf)
trigger.model.setblock(2,trigger.BLOCK_WAIT, trigger.EVENT_ANALOGTRIGGER)
trigger.model.setblock(3,trigger.BLOCK_MEASURE, buf, samp_count)
trigger.model.initiate()
-- *********************************************
-- **** Display 1st Reading from Buffer ****
-- *********************************************
display.clear()
display.changescreen(display.SCREEN_USER_SWIPE)
display.settext(display.TEXT1, "Analogtrigger")
num7 = buf.readings[1]
str7 = string.format('%3.4e', num7)
display.settext(display.TEXT2, str7) print(num7)
Set up to verify the analog trigger digitize DC voltage, DC coupling
Use the connections described in the previous topic (Set up to verify the analog trigger measure DC
voltage (on page 2-19)).
To verify analog trigger digitize voltage with DC coupling accuracy:
1. Enable the calibrator output to 100 Hz sine wave with a peak level of 100 % of the Model
DMM7510 measure range. For example, if the Model DMM7510 is set to the 10 V range, set
calibrator amplitude to 7.07 V
rms
.
2. Verify DC-coupled 1 % accuracy for each range, 100 mV to 1000 V, rising and falling analog
edge triggering, as listed in the "Verify the analog trigger voltage" tables. Verify accuracies on the
User screen on the Model DMM7510 front-panel. Use the remote commands in the following for
verification.