PERFORMANCE TEST
4 - 21
Test set up:
Settings/procedure
1
-
Apply a 50 kHz square-wave signal of 200 mV(pp into 50
Ω
)to input CH1.
2
-
Press the AUTOSET key and set CH1 to 0.1V/div.
3
-
Move the square-wave signal to the vertical center of the screen.
4
-
Adjust the generator output so that the displayed amplitude is exactly 2
divisions.
5
-
Use the CH1 POS control to shift the signal upwards and downwards
within the central 6 divisions of the screen.
Requirements
-
Verify that the amplitude of the sq. wave in the central 6 div. screen area is
between 1.96 ...2.04 divisions (+ or - 2%).
Repeat the above settings and procedure for CH2, CH3 and CH4.
PM3370B/80B/90B: repeat this for CH2.
Press the ANALOG key (’DIGITAL MODE’ is displayed briefly) and repeat the
check in this chapter for the digital mode. The requirement for the digital mode
is that the sq. wave amplitude in the central 6 div. screen area is between 1.94
... 2.06 divisions (+ or 3%).
Press the ANALOG key (’ANALOG MODE’ is displayed briefly) to return to
analog mode.