Philips PM32671 Service Manual page 66

INPUT VOLTAGE
0 B J ECTl V E
Sine-wave signal 1 kHz,
Sine-wave signal 25kHz,
Trigger bandwith
ampl. 300mV to input A
Sine-wave signal, 25kHz to
input A
i
SETTINGS
-
Depress EXT of S23
-
LEVEL R6
- Depress DC of S20
- Depress TRIG of S3
- AMPLIDIV to 50mV
-
Depress TRIG VIEW
-
Set trace in the centre by means
of R 6 n
- Decrease freq. of input signal t o
1 Hz (trace height 6 div.)
-
Increase freq. of input signal to
- Depress DC of S20
- Adjust ampl. of input signal so
that trace height is 6 div.
-
Depress LF of S20
-
Decrease freq. of input signal to
Depress HF of S20
- Freq. of input signal 25kHz
-
Increase freq. of input signal to
R EQU I R EM ENTS
Trigger point adjustable over the
complete amplitude (k 1.6V)
Trace must be triggered
Trace must be triggered
Trace must be triggered
Trace height 6 div.
Trace height 4.2 div.
Trace height increases and signal must
be triggered
Trace height 4.2 div.
Trace height increases and signal must be
triggered
I I
MEASURING RESULTS
I