Table 4. DC Accuracy Verification (Continued)
Config
Input
Impedance
(
Ω
)
Vertical
Range
(V
pk-pk
)
Vertical
Offset
(V)
Sample
Rate
(GS/s)
Test
Points
(V)
As-
Found
Limits
(mV)
As-Left
Limits (mV)
122
1 M
40 V
0
3.0
19
±780.2
±467
123
1 M
40 V
0
1.5
-19
±780.2
±467
124
1 M
40 V
0
3.0
-19
±780.2
±467
125
1 M
40 V
100
1.5
119
±1880.2
±917
126
1 M
40 V
100
3.0
119
±1880.2
±917
127
1 M
40 V
-100
1.5
-119
±1880.2
±917
128
1 M
40 V
-100
3.0
-119
±1880.2
±917
1.
Connect the calibrator test head to channel 0 of the PXIe-5113.
2.
Configure the PXIe-5113 with the following settings:
•
Input impedance: the Input Impedance value from the
table.
•
Maximum input frequency: 500 MHz
•
Vertical coupling: DC coupling
•
Vertical offset: the Vertical Offset value from the
•
Vertical range: the Vertical Range value from the
table.
•
Sample rate: the Sample Rate value from the
•
Minimum number of points: 8,500,000 samples
•
NI-SCOPE scalar measurement:
Voltage Average
3.
Configure the calibrator output impedance to match the impedance of the PXIe-5113.
4.
Configure the calibrator to output the Test Point value from the
table.
5.
Enable the calibrator output.
6.
Wait the required amount of time for settling and then record the measured voltage.
•
For the first configuration from step 2 with 1 MΩ input impedance, wait two
seconds for settling.
•
For all other configurations, wait one second for settling.
7.
Use the following formula to calculate the voltage error:
DC Voltage Error
=
V
measured
-
Test Point
8.
Compare the voltage error to the appropriate limit from the
table.
9.
Repeat steps 2 through 8 for each configuration listed in the
table.
PXIe-5113 Calibration Procedure
|
© National Instruments
|
17