YOKOGAWA DL7440, Руководство пользователя

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43
IM 701450-61E
:MATH<x>:OPERation
Function Sets the power analysis operator or queries the
current setting.
Syntax :MATH<x>:OPERation {PPS|POWer|Z|
I2T|HARMonics|TRENd},{<NRf>|MATH<1>},
<NRf>
:MATH<x>:OPERation?
<x> of MATH<x> = 1 or 2
<NRf> = 1 to 6 (1 to 4 on the
DL7440)
Example :MATH1:OPERATION HARMONICS,2
:MATH1:OPERATION? ->
:MATH1:OPERATION HARMONICS,2
Description • For unary operators
(I2T|PPS|HARMonics|TRENd)
, select the
target waveform using the first
<NRf>
.
• For binary operators
(POWer|Z)
, select the
target waveform of the first term using the first
<NRf>
and the target waveform of the second
term using the second
<NRf>
.
:MATH<x>:PFFT?
Function Queries all settings related to the power
spectrum computation (FFT) of the voltage/
current waveform on which to perform power
analysis.
Syntax :MATH<x>:PFFT?
<x> = 1 to 2
Example :PANALYZE:PWR1:I:PROBE? ->
:PANALYZE:PWR1:I:PROBE C10
:MATH<x>:PFFT:POINts
Function Sets the number of points to be computed in the
FFT computation or queries the current setting.
Syntax :MATH<x>:PFFT:POINts {<NRf>}
:MATH<x>:PFFT:POINts?
<x> = 1 to 2
<NRf> = 1000,10000
Example :MATH1:HARMONICS:VOLTAGE 220
:MATH1:HARMONICS:VOLTAGE? ->
:MATH1:HARMONICS:
VOLTAGE 220.00
:MATH<x>:PFFT:SPOint
Function Sets the computation start point used in the FFT
computation or queries the current setting.
Syntax :MATH<x>:PFFT:SPOint {<NRf>}
:MATH<x>:PFFT:SPOint?
<x> = 1 to 2
<NRf> = -5 to 5 (The resolution is
10 div/display record length.)
Example :MATH1:HARMONICS:VOLTAGE 220
:MATH1:HARMONICS:VOLTAGE? ->
:MATH1:HARMONICS:
VOLTAGE 220.00
:MATH<x>:PFFT:WINDow
Function Sets the time window used in the FFT
computation or queries the current setting.
Syntax :MATH<x>:PFFT:WINDow {RECTangle|
HANNing|FLATtop}
:MATH<x>:PFFT:WINDow?
<x> = 1 to 2
Example :MATH1:HARMONICS:VOLTAGE 220
:MATH1:HARMONICS:VOLTAGE? ->
:MATH1:HARMONICS:
VOLTAGE 220.00
:MATH<x>:TRENd?
Function Queries all settings related to the trend display.
Syntax :MATH<x>:HARMonics?
<x> = 1 to 2
Example :MATH1:TREND? ->
:MATH1:TREND:MEASURE UPTOPEAK
:MATH<x>:TRENd:EXECute
Function Executes trend display.
Syntax :MATH<x>:TRENd:EXECute
<x> = 1 to 2
Example :MATH1:TREND:EXECUTE
:MATH<x>:TRENd:MEASure
Function Sets the waveform parameter to be displayed in
the trend or queries the current setting.
Syntax :MATH<x>:TRENd:MEASure {<Power
analysis parameter>|
<Standard waveform parameter>}
:MATH<x>:TRENd:MEASure?
<x> of MATH<x> = 1 or 2
<Power analysis parameter> =
{AH|AHN|AHP|I2T|IAC|IDC|IMN|INPeak|IPPeak|
IPTopeak|IRMN|IRMS|LAMBda|P|Q|S|UAC|
UDC|UMN|UNPeak|UPPeak|UPTopeak|URMN|
URMS|WH|WHN|WHP|Z}
<Standard waveform parameter> =
{AVERage|AVGFreq|AVGPeriod|BWIDth1|
BWIDth2|DUTYcycle|FALL|FREQuency|
HIGH|LOW|MAXimum|MINimum|NOVershoot|
NWIDth|PERiod|PNUMber|POVershoot|
PTOPeak|PWIDth|RISE|RMS|SDEViation|
TY1Integ|TY2Integ}
Example :MATH1:TREND:MEASURE LAMBDA
:MATH1:TREND:MEASURE? ->
:MATH1:TREND:MEASURE LAMBDA
12 Communication Commands