User Manual

Command Descriptions
Syntax
MEASUrement:M
EAS<x>:UNIts?
Returns
<QString> returns "V" for volts, "s" for seconds, or "Hz" for Hertz, or a null
string if MEASUrement:MEAS<x>:TYPe is set to NONE.
For the TDS1000B, TDS2000B, TDS2000C, and TPS2000 Series, <QString>
canalsoreturnthefollowing:
Aforamps
VA for volt-amperes
AA for amperes*amperes
VV for volts*volts
You can also use this command for undefinedmathwaveforms.
Examples
MEASUREMENT:MEAS3:UNITS might return "V", indicating the units for
measurement 3 are volts.
MEASUrement:MEAS<x>:VALue? (Query Only)
Returns the value that was calculated for the oscilloscope on-screen periodic
measurement specified by <x>. Where <x> identifies the measurement, 1
through 4 for the TDS200 Series, and 1 through 5 for the TDS1000, TDS2000,
TDS1000B, TDS2000B, TDS2000C, and TPS2000 Series.
This value is a display value and will be updated about every 1/2 second if both
the MEASURE menu and the MEAS<x> source channel are displayed. If you are
acquiring at a slow sweep rate, the oscilloscope may take longer than 1/2 second
to update.
NOTE. MEASurement:IMMed is usually more useful than
MEASUrement:MEAS<x> when using the oscilloscope with extern
al
devices.
If MEASUrement:MEAS<x>:TYPe is set to NONE,
MEASUrement:MEAS<x>:VALue generates event message 2231 (Measurement
error, measurement is not activated) and returns 9.9E37.
If the channel specified by MEASUrement:MEAS<x>:SOUrce is not displayed
on the oscilloscope, the oscilloscope generates event message 2225 (Measurement
error, no waveform to measure) and returns 9.9E37.
Use the *ESR? and ALLEv? queries to check for measurement errors. An
example error is "2204, Low signal amplitude".
2-128 TDS200, TDS1000/2000, TDS1000B/2000B, TDS2000C, TPS2000 Programmer