National Instruments NI 5922, Calibration Procedure

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© National Instruments Corporation 19 NI 5922 Calibration Procedure
Timing Accuracy
Complete the following steps to verify the timing accuracy for the NI 5922.
Note The same time source is used for both channel 0 and channel 1, so you only need to
verify the timing accuracy on one channel.
1. Call
niScope_ConfigureChanCharacteristics
(niScope
Configure Chan Characteristics VI) with the following parameters:
• channelList :
"0"
• inputImpedance :
NISCOPE_VAL_50_OHM
• maxInputFrequency :
0
2. Call
niScope_ConfigureVertical
(niScope Configure
Vertical VI) with the following parameters:
• channelList :
"0"
• range :
10
• 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 :
15,000,000
• minNumPts :
1,000,000
• 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
Table 6. NI 5922 Vertical Gain Stimuli
Iteration
Range
(V)
Positive
Input (V)
Negative
Input (V)
Calibration
Test Limits
Published
Specifications
1 2 0.9 –0.9 ±0.0293% ±0.05%
2 10 4.5 –4.5 ±0.0293% ±0.05%