Use the vertical adjustment control on the oscilloscope to
adjust the signal until it is centered on the base line as shown in
the picture.
Without changing the vertical adjustment control
, probe pin
2. You should see a small amplitude square wave as shown in
blue in the picture. Adjust the vertical position of this signal
using trim pot P2 so that the signal is also centered on the base
line as shown. This completes the adjustment.
Procedure with a multimeter
The input of Channel A must be shorted (a 50Ω BNC
terminator is also suitable). With the multimeter set to measure
DC volts, measure the voltage between pin 2 and 3 of IC6
(
plus
on pin 2,
minus
on pin 3). Adjust trim pot P2 until a
value of about 10mV is shown.
This completes the adjustment.
19
ideal adjustment
Summary of Contents for AE20401
Page 23: ...Finished Component Side Finished Solder Side without the LCD LCD Mounting 17 ...
Page 31: ...Operation Functions Menu Structure 25 ...
Page 37: ...31 Example 1 noise Example 2 one signal superimposed on another ...
Page 50: ...Circuit Diagram Part 1 2 44 ...
Page 51: ...Part 2 2 45 ...
Page 63: ... Nr of valid counts depends on range 57 ...
Page 64: ...ASCEL ELECTRONIC www ascel electronic de 2015 ...