Owon SDS series, Руководство по обслуживанию

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Section 4: Debugging and Calibration
Section 4: Debugging and Calibration
4.1 Brief Introduction
In this part will provide some methods for debugging and calibration.
4.2 Tools and Devices
The instruments for debugging and calibration are in accordance with provided in section three.
4.3 The Interval Time to Calibration.
The recommended time for calibration is one year.
4.4 Auto-calibration
The auto-calibration application can make the oscilloscope reach the optimum
condition rapidly to obtain the most accurate measurement value. You can carry
out this application program at any time, but when the range of variation of the
ambient temperature is up to or over 5
, this program must be executed.
"
For the performing of the self-calibration, all probes or wires should be
disconnected with the input connector first. Press the
“Utility” button, then, press
H1 button to call out the Function menu; turn the M knob to choose Adjust .
Press H2 button to choose the option “ Self Cal ”; run the program after everything
is ready.
4.5 Attenuation Compensation Capacitance Calibration
The steps are as follows:
1. Connect the calibrator with BNC of CH1 by Q9
2. Make the calibrator to output sine wave with peak-peak value of 30V and 1KHZ
3. Set the coupling of CH1 as DC, voltage division as 5V, time base division as 1ms, zero position
as -15v and observe the waveforms on the screen also adjust the attenuation compensation
capacitance until the normal waveform display.
4. Repeat step 1 and 3 to turn the attenuation compensation capacitance of CH2 to correct value.
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