4 - 50
PERFORMANCE TEST
7
-
Decrease the input signal to 0.5 Vpp with an offset of 0.25V.
8
-
Set CH1 to 0.5V/division.
9
-
Verify that the top half of the square wave is visible at full intensity.
4.3.42
Probe Adjust signal; frequency and output voltage
The Probe Adjust signal is a calibration signal with fixed frequency and voltage.
In this test, the values of frequency and voltage are checked.
Test equipment:
None
Test set-up:
Settings/procedure:
1
-
Connect the Probe Adjust signal to input CH1 and press the AUTOSET
key.
2
-
Select GND of CH1.
3
-
Set the trace in the center of the screen.
4
-
Select DC input coupling for CH1.
Requirements:
1
-
Verify that a positive going square-wave signal of 0.6 V(pp) is displayed,
i.e. 3 divisions vertical at 0.2V.
2
-
Verify that the frequency of the displayed signal is about 2 kHz, i.e. a
period time between 4.0 … 6.0 divisions horizontal at MTB 100
µ
s/div.
CH1
Probe
Adjust
CH2
CH3
CH4
OSCILLOSCOPE UNDER TEST
PROBE
+
CABLE
MAT4137
9303