National Instruments NI 5922, Процедура калибровки

Страница: 26 / 28

NI 5922 Calibration Procedure 26 ni.com
Complete all of the following steps to externally adjust the NI 5922.
1. Connect the scope calibrator to the channel 0 input of the digitizer.
Configure the calibrator to output an exact 1 MHz sine wave with
1 V peak-to-peak amplitude and 1 M
Ω
load impedance.
2. Connect the DC source calibrator to the channel 1 input of the digitizer.
Configure the DC source calibrator to output an exact 4 V DC signal
into a 1 M
Ω
load impedance (channel 1).
3. Wait 3,000 ms for the calibrator to settle.
4. Call
niScope_CalStart
(niScope Cal Start VI) using the user
password. The factory default password for the NI 5922 is
NI
.
5. Call
niScope_CalSelfCalibrate
(niScope Cal Self Calibrate VI)
with the following parameters:
• channelList :
VI_NULL
• option :
VI_NULL
6. Call
niScope_CalAdjustVCXO
(niScope Cal Adjust VCXO VI)
with the following parameter:
• stimulusFreq :
1,000,000
Note The 1 MHz stimulus is automatically taken from channel 0.
7. Call
niScope_CalAdjustRange
(niScope Cal Adjust Range VI)
with the following parameters:
• channelName :
"1"
• range :
0
• stimulus :
4.0
8. Configure the DC source calibrator to output an exact –4 V DC signal
into a 1 M
Ω
load impedance (channel 1).
9. Wait 3,000 ms for the calibrator to settle.
10. Call
niScope_CalAdjustRange
(niScope Cal Adjust Range VI)
with the following parameters:
• channelName :
"1"
• range :
0
• stimulus :
–4.0
11. Disconnect or disable all inputs to the digitizer.
12. Call
niScope_CalSelfCalibrate
(niScope Cal Self Calibrate VI)
with the following parameters:
• channelList :
VI_NULL
• option :
VI_NULL