PERFORMANCE TEST
4 - 45
Test set-up:
Settings/procedure and requirements:
1
-
Apply a 50 MHz (30 MHz) sine-wave signal of 1 V(pp into 50
Ω
) from the
SG 503 to input CH1.
2
-
Press the AUTOSET key and set CH1 to 0.5V/div.
3
-
Use a 50
Ω
termination.
4
-
Set the input coupling of CH1 to DC and POSition the signal in the vertical
center of screen.
5
-
Select ’trig’ from the menu under the TB MODE menu key.
6
-
Press the TRIGGER menu key and select level-pp ’off’ and ’dc’ trigger
coupling from the TRIGGER MAIN TB menu
7
-
Adjust TRIGGER LEVEL for a correctly triggered display.
8
-
Press the DTB menu key and select DEL’D TB ’on’ and MAIN TB ’on’ from
the related menu.
9
-
Set the MAIN TB to 200 ns/division and DELAYED TIMEBASE to
50.0 ns/division.
10 -
Adjust the DELAY control in the DELAYED TIMEBASE section to a delay
time of 1.000
µ
s.
11 -
Select ’trig’d’ and ’dc’ coupling from the DELAYED TIMEBASE menu and
press the front panel key TRIG1. Or TRIG2 (if CH2 on), TRIG3 (if CH3 on),
TRIG4 (if CH4 on).
12 -
Adjust the DEL’D TB trigger level via the
∆
control for a well- triggered
signal (intensified part must be visible).
13 -
Operate the TRACK control to separate the MAIN TB and DEL’D TB for
clearly visible displays.
14 -
Decrease the amplitude of the input signal.
15 -
Verify that the DEL’D TB is well triggered at signal amplitudes of
0.6 divisions and more.
16 -
Decrease the input frequency to 50 kHz. Set the MAIN TB to
50.0
µ
s/division and DEL’D TB to 20.0
µ
s/division.