4 - 32
PERFORMANCE TEST
Test set-up:
Settings/procedure:
1
-
Apply a 0.5 ms time marker signal to input CH1.
2
-
Press the AUTOSET key.
3
-
Use a 50
Ω
termination. For instruments with switchable 50
Ω
input
impedance it is recommended to make use of this feature (via
VERT MENU key).
4
-
Press the TRIGGER menu key.
5
-
Select level-pp ’off’ and ’dc’ trigger coupling from the TRIGGER MAIN TB
menu.
6
-
Press the TB MODE menu key and select ’trig’ from the related menu.
7
-
Adjust TRIGGER LEVEL for a correctly triggered display.
8
-
Set the trace height to about 4 divisions.
9
-
Press the DTB menu key and select DEL’D TB ’on’ and MAIN TB ’on’ from
the related menu .
10 -
Set MAIN TB to 1.00 ms and DELAYED TIME BASE to 5.00
µ
s.
11 -
Use the DELAY control (in the DELAYED TIMEBASE SECTION to set the
time delay to about 0 seconds.
12 -
Adjust the vertical position of the MAIN TB display with the CH1 POS
control in the top half of the viewing area.
13 -
Adjust the vertical position of the DELAYED TIMEBASE display with the
TRACK control.
14 -
Verify the DELAYED TIMEBASE deflection coefficients with MAGNIFY off
(
*
1) and MAGNIFY on (
*
10) according to the requirements in the tables.
Use the deflection error facility of the time marker generator.
Note:
-
Error limits must be measured between the 2nd and the 10th graticule line
(there are 11 graticule lines). These are the central 8 divisions.
-
With MAGNIFY on (
*
10), the central 10 divisions of the expanded 100
divisions of DEL’D TB are measured.