Fluke PM-3370B Manuel d'utilisateur Page 149

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Vue de la page 148
COMMAND REFERENCE 4 - 49
The measurement data functions must be enabled first, or the error message -221
"Settings conflict" is generated. If the oscilloscope is in the analog mode, the error
message -221 "Settings conflict;Digital mode required" is generated. The
following measurement data values can be selected by specifying the number
<n> in the query:
MEAS1 and MEAS2 data measurement functions can only be selected and
enabled via the front panel MEASURE key and softkey menu.
CURSORS data measurement functions can only be selected and enabled via
the front panel CURSORS key and softkey menu.
MATH - FFT data measurement functions can be selected and enabled via the
front panel MATH/CURSORS keys and softkey menus, or by programming:
- CALCulate:TRANsform:FREQuency:TYPE ABSolute Selects abs. values.
- CALCulate:TRANsform:FREQuency:TYPE RELative Selects rel. values.
- CALCulate:TRANsform:FREQuency:STATe ON Enables MATH1 - FFT.
Note: The result of an FFT can be expressed as a relative or an absolute
amplitude value. A relative FFT calculation consists of a frequency (Hz)
and an amplitude in (dB). An absolute FFT calculation consists of a
frequency (Hz) and an amplitude in dBm (dB with respect to 1 milliwatt),
dB
µ
V (dB with respect to 1 microvolt), or Vrms (Volt RMS) as selected
via the front panel CURSORS - READOUT softkey menu.
Example:
Send
DISPlay:MENU MEASure Switches MEASURE menu
display on.
'
*****
'Enable and define the MEAS1 function via the front panel
'MEASURE menu.
'
*****
Send
DISPlay:WINDow:TEXT1:DATA? Queries MEAS1 result.
Read
<MEAS1_result>
PRINT <MEAS_result>
Front panel compliance:
The DISPlay:WINDow[1]:TEXT<n>:DATA? query is the remote equivalent of the
front panel CURSORS, MATH, and MEASURE keys and softkey menus.
NUMBER <n>: MEASUREMENT VALUE:
1, 2
10,11,12,13,20,21,30,40,51,52
60, 61
MEAS1, MEAS2 data
CURSORS data
MATH - FFT frequency, amplitude
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