PERFORMANCE TEST
4 - 25
5
-
Press the MAGNIFY keys and set the MAIN TB TIME/DIV to 2.00 ns/div
(PM3390B/94B) or to 5.00 ns/div (PM3370B/80B/84B).
6
-
Press the TRIGGER menu key.
7
-
Select level-pp ’off’ and ’dc’ trigger coupling from the related menu.
8
-
Press the TB MODE menu key.
9
-
Select ’trig’ from the related menu.
10 -
Adjust TRIGGER LEVEL for a triggered display of the leading edge.
11 -
Using the X POS control, position the leading edges of the signals in the
horizontal center of the screen.
12 -
Using both CH1 and CH2 POS controls, adjust the vertical position of each
trace between the dotted 0% and 100% lines. The signals appear to be
superimposed.
Requirements
-
Verify that the delay difference between the two displayed signals is less than
0.25 ns. This equals 0.13 divisions in PM3390B/94B or 0.05 divisions in
PM3370B/80B/84B.
Repeat the above settings and procedure for CH3 and CH4 (not necessary for
PM3370B/80B/90B).
Press the ANALOG key (’DIGITAL MODE’ is displayed briefly) and repeat the
tests in this chapter for the digital mode. In digital mode, it is not necessary to
activate the MAGNIFY function since the timebase ranges up to 2.00 ns/
division (PM3390B/94B) or 5.00 ns/division (PM3370B/80B/84B).
Press the ANALOG key (’ANALOG MODE’ is displayed briefly) to return to
analog mode.
Figure 4.3
Delay difference
≤
0.13 div in PM3390B/94B or
≤
0.05 div in
PM3370B/80B/84B.
DELAY BETWEEN
CHANNELS
MAT4168