Section 4: Debugging And Calibration; Brief Introduction; Tools And Devices; The Interval Time To Calibration - Owon SDS Series Service Manual

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 and
Re sistance Calibration
The steps are as follows:
1.
Calibrate the probe in the CH1:
(1) Press the CH1 MENU button on the front panel of the oscilloscope, in the function
menu, set "Coupling" to DC, set "Probe" attenuation coefficient to X1.
(2) Set the attenuation switch of the probe as X1 (see Figure 10). If a probe hook tip is used,
ensure that it keeps in close touch with the probe.
(3) Connect the probe with the CH1, connect the probe tip with the 5V/1KHz signal
connector of the probe compensator and connect the reference wire clamp with the
ground wire connector of the probe connector (see Figure 11).
(4) Press the button "Autoset" of the oscilloscope. Check the displayed waveforms; if the
waveform does not appear like the Correctly Compensated waveform shown in Figure
12, adjust the probe (see Figure 13) for the flattest square wave possible.
Section 4: Debugging and Calibration
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