©
National Instruments Corporation
15
NI 5922 Calibration Procedure
Input Bias Current
Complete the following steps to verify input bias current of the NI 5922.
You must verify both channels.
1.
Disconnect all cabling from the BNC inputs of the NI 5922.
2.
Call
niScope_ConfigureChanCharacteristics
(niScope Configure Chan Characteristics VI) with the following
parameters:
•
channelList
:
"0"
•
inputImpedance
:
NISCOPE_VAL_50_OHM
•
maxInputFrequency
:
0
3.
Call
niScope_ConfigureVertical
(niScope Configure
Vertical VI) with the following parameters:
•
channelList
:
"0"
•
range
:
2
•
offset
:
0.0
•
coupling
:
NISCOPE_VAL_DC
•
probeAttenuation
:
1.0
•
enabled
:
NISCOPE_VAL_TRUE
4.
Call
niScope_ConfigureHorizontalTiming
(niScope Configure
Horizontal Timing VI) with the following parameters:
•
minSampleRate
:
1,000,000
•
minNumPts
:
100,000
4
2
5 M
2
8.5
µ
V
8.7
µ
V
5
2
10 M
1
19.1
µ
V
20
µ
V
6
2
15 M
1
77
µ
V
80
µ
V
7
10
50 k
132
3.23
µ
V
3.4
µ
V
8
10
100 k
66
4.11
µ
V
4.3
µ
V
9
10
1 M
7
12.7
µ
V
13
µ
V
10
10
5 M
2
29.5
µ
V
31
µ
V
11
10
10 M
1
88
µ
V
92
µ
V
12
10
15 M
1
384
µ
V
401
µ
V
Table 4.
NI 5922 Noise Performance (Continued)
Iteration
Range (V)
Sample Rate
(S/s)
i
Calibration
Test Limits
Published
Specifications
