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National Instruments Corporation
31
NI 5122/5124 Calibration Procedure
Adjusting the NI 5122/5124
If the NI 5122/5124 successfully passed each of the verification procedures
within the calibration test limits, then an adjustment is recommended but
not required to guarantee its published specifications for the next two years.
If the digitizer was not within the calibration test limits for each of the
verification procedures, you can perform the adjustment procedure to
improve the accuracy of the digitizer. Refer to the
section to determine which procedures to perform.
An adjustment is required only once every two years. Following the
adjustment procedure automatically updates the calibration date and
temperature in the EEPROM of the digitizer.
3
0
1.25 mV
NISCOPE_VAL_
POSITIVE
9.70 mV
pk-pk
100 MHz sine
wave with 50
Ω
load impedance
19.0 mV
pk-pk
150 MHz sine
wave with 50
Ω
load impedance
4
0
–1.25 mV
NISCOPE_VAL_
NEGATIVE
5
1
1.25 mV
NISCOPE_VAL_
POSITIVE
4.84 mV
pk-pk
50 MHz sine
wave with 50
Ω
load impedance
4.84 mV
pk-pk
50 MHz sine wave
with 50
Ω
load
impedance
6
1
–1.25 mV
NISCOPE_VAL_
NEGATIVE
7
1
1.25 mV
NISCOPE_VAL_
POSITIVE
9.7 mV
pk-pk
100 MHz sine
wave with 50
Ω
load impedance
19.0 mV
pk-pk
150 MHz sine
wave with 50
Ω
load impedance
8
1
–1.25 mV
NISCOPE_VAL_
NEGATIVE
9
VAL_
EXTERNAL
62.5 mV
NISCOPE_VAL_
POSITIVE
240 mV
pk-pk
100 MHz sine
wave with 1 M
Ω
load impedance
240 mV
pk-pk
100 MHz sine
wave with 1 M
Ω
load impedance
10
VAL_
EXTERNAL
–62.5 mV
NISCOPE_VAL_
NEGATIVE
11
VAL_
EXTERNAL
62.5 mV
NISCOPE_VAL_
POSITIVE
940 mV
pk-pk
200 MHz sine
wave with 1 M
Ω
load impedance
940 mV
pk-pk
200 MHz sine
wave with 1 M
Ω
load impedance
12
VAL_
EXTERNAL
–62.5 mV
NISCOPE_VAL_
NEGATIVE
Table 12.
NI 5122/5124 Trigger Sensitivity Inputs (Continued)
Iteration
Trigger
Source
Level
Slope
Calibrator
NI 5122
NI 5124