Owon SDS series Service Manual

Section 3: Test and Calibration
Figure 1: Connection of sweep rate and error inspection
B. Make the time scale of the oscilloscope calibrating in line with sweep rate (time division) and
adjust the trigger level to display stable waveforms. And press “T ERROR”, turn fine-tuning knob
to make the time scale superpose with the level of calibration line( as figure 2),the error is the
error value of sweep rate.( S03A calibration is pointer header that the indicated value is the
correction to the error of sweep rate and the error should be anti-symbol.)
Figure 2: Waveform of sweep rate and error inspection
C. Repeat step B and test sweep rate for other channels.
3.3.3 Time measurement and error inspection
A. As shown by Figure 1 connected
B. Set the output time period of the calibration as A, press “Autoset” to display the stable
waveform. Then, also set the measured window 1 as the period of CH 1; get the period value B to
gain the time error C as follows:
C=(B+A)%A$100%
3.3.4 Voltage division and error inspection
A. As shown by Figure 3 connected, CH 1 set as follows:
Coupling: DC Channel: On Probe: 1X Invert: Off
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Owon SDS series Specifications

General

Brand	Owon
Model	SDS series
Category	Test Equipment
Language	English