National Instruments NI 5922, Процедура калибровки

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© National Instruments Corporation 17 NI 5922 Calibration Procedure
11. Repeat steps 1 through 10 for channel 1, changing the value of the
channelList parameter from
"0"
to
"1"
.
Vertical Gain Accuracy
Complete the following steps to verify vertical gain accuracy of the
NI 5922. You must verify both channels and each iteration listed in
Table 6.
1. Call
niScope_ConfigureChanCharacteristics
(niScope
Configure Chan Characteristics VI) with the following parameters:
• channelList :
"0"
• inputImpedance :
NISCOPE_VAL_1_MEG_OHM
• maxInputFrequency :
0
2. Call
niScope_ConfigureVertical
(niScope Configure
Vertical VI) with the following parameters:
• channelList :
"0"
• range : The Range value for the current iteration from Table 6
• offset :
0.0
• coupling :
NISCOPE_VAL_DC
• probeAttenuation :
1.0
• enabled :
NISCOPE_VAL_TRUE
3. Call
niScope_ConfigureHorizontalTiming
(niScope Configure
Horizontal Timing VI) with the following parameters:
• minSampleRate :
10,000,000
• minNumPts :
100,000
• refPosition :
50.0
• numRecords :
1
• enforceRealtime :
NISCOPE_VAL_TRUE
4. Call
niScope_Commit
(niScope Commit VI) with the following
parameter:
• vi : The instrument handle you obtained from
niScope_init
5. Connect the DC voltage calibrator source to the channel 0 input of the
digitizer and output the positive voltage from Table 6 that corresponds
to the vertical range used.
Table 5. NI 5922 Input Bias Current
Calibration Test Limit Published Specification
±350 nA ±500 nA