Keithley DMM7510 Reference Manual

Model DMM7510
7½ Digit Graphical Sampling Multimeter Reference Manual Section 8:
TSP command reference
DMM7510-901-01 Rev. B / May 2015 8-167
dmm.measure.math.enable
This attribute enables or disables math operations on measurements for the selected measurement function.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes
Restore configuration
Instrument reset
Power cycle
Measure configuration list
Configuration script
Measure configuration list
dmm.OFF
Usage
value = dmm.measure.math.enable
dmm.measure.math.enable = value
value
The math enable setting:
• Disable: dmm.OFF
• Enable:
dmm.ON
Details
When this command is set to on, the math operation specified by the math format command is
performed before completing a measurement.
Example
dmm.measure.func = dmm.FUNC_DC_VOLTAGE
dmm.measure.math.format = dmm.MATH_PERCENT
dmm.measure.count = 1
dmm.measure.math.percent = dmm.measure.read()
dmm.measure.math.enable = dmm.ON
dmm.measure.count = 5
MathBuffer = buffer.make(100)
dmm.measure.read(MathBuffer)
printbuffer(1, MathBuffer.n, MathBuffer.formattedreadings)
dmm.measure.count = 1
for x = 1, 3 do
print(dmm.measure.read(MathBuffer))
end
Configure the instrument for DC volts and reset the DC volts function to the default settings.
Set math format to percent.
Acquire 1 reading to use as the relative percent value.
Take 5 readings with percent math enabled and store them in a buffer called MathBuffer that can store 100
readings.
Take three additional readings without using the reading buffer.
Sample output assuming no load was connected to the instrument:
-100.00242 %, -100.00228 %, -100.00220 %, -100.00233 %, -100.00216 %
-100.00228175
-100.0022889
-100.00210915
Also see
Calculations that you can apply to measurements (on page 3-7)
dmm.digitize.math.enable (on page 8-102)
dmm.measure.math.format (on page 8-168)

Keithley DMM7510 Specifications

General

Resolution	7.5 digits
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	10 µA to 10 A
Resistance Range	10 Ω to 1 GΩ
Sampling Rate	1 MS/s
Memory	27.5 million readings
Display	5 inch capacitive touchscreen
AC Voltage Accuracy	±0.06% of reading
AC Current Range	10 A
Connectivity	USB, LAN, GPIB