Keithley DMM7510

Model DMM7510
7½ Digit Graphical Sampling Multimeter Calibration Manual Section 2:
Performance verification
DMM7510-905-01 Rev. A / April 2015 2-23
localnode.prompts = 1
localnode.showerrors = 1
-- *********************************************
-- **** Digitize DCV AC Coupling ****
-- **** Slow AC Filter ****
-- *********************************************
dmm.digitize.func = dmm.FUNC_DIGITIZE_VOLTAGE
dmm.digitize.coupling.type = dmm.COUPLING_AC -- dmm.COUPLING_DC
dmm.digitize.coupling.acfilter = dmm.AC_FILTER_SLOW --- dmm.AC_FILTER_FAST
-- Set input freq AC coupling amplitude compensation.
dmm.digitize.coupling.acfrequency = 1e2
dmm.digitize.aperture = 1e-6
dmm.digitize.samplerate = 1e6
dmm.digitize.range = 100e-3
dmm.digitize.analogtrigger.mode = dmm.MODE_EDGE
dmm.digitize.analogtrigger.edge.slope = dmm.SLOPE_FALLING
dmm.digitize.analogtrigger.highfreqreject = dmm.OFF
display.clear()
display.changescreen(display.SCREEN_USER_SWIPE)
dmm.digitize.analogtrigger.edge.level = -50e-3
digio.line[1].mode = digio.MODE_TRIGGER_OUT
trigger.digout[1].pulsewidth = 30E-6
trigger.digout[1].stimulus = trigger.EVENT_ANALOGTRIGGER
-- *********************************************
-- **** Fast AC Filter ****
-- *********************************************
dmm.digitize.coupling.acfilter = dmm.AC_FILTER_FAST --- dmm.AC_FILTER_SLOW
-- *********************************************
-- **** For Digitize Functions ****
-- **** Trigger Model setup and ****
-- **** start of Triggering ****
-- *********************************************
samp_count = 1e3
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_DIGITIZE, 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)