3 - 10
BRIEF CHECKING PROCEDURE
AUTO RANGE function:
-
The AUTO RANGE function of the main time base (MAIN TB) adjusts the time
base automatically so that 2 to 6 waveform periods are displayed.
-
Press the AUTO RANGE key in the time base section.
-
Check that the time base is readjusted so that 2 to 6 waveform periods are
displayed.
-
Press the left of the MAIN TB TIME/DIV keys until MTB 2.00ms is displayed.
-
Press the AUTO RANGE key in the time base section.
-
Check that the time base is readjusted so that 2 to 6 waveform periods are
displayed.
-
Press the AUTO RANGE key in the time base section.
-
Adjust MAIN TB TIME/DIV to 100
µ
s/div.
MAIN TB and DELAYED TIMEBASE functions:
-
Press the lower CH1 AMPL key so that an input sensitivity of 200 mV/division
is obtained for channel 1.
-
Use the CH1 POS control to position the signal in the upper half of the screen.
-
Press the DTB menu key, the DELAYED TIME-BASE menu appears above
the CRT softkeys.
-
Select DEL’D TB ’on’ and MAIN TB ’on’ front from the DELAYED TIMEBASE
menu.
-
Use the DEL’D TB TIME/DIV to select 20.0
µ
s/division.
-
Adjust the DELAY control in the DELAYED TIME BASE section so that the
display of Fig. 3.9 is obtained. To do this the TRACK control must be adjusted
such that MAIN TB is above the DEL’D TB display.
-
Press the left side of the DELAYED TIME BASE TIME/DIV keys and verify that
the number of displayed signal periods increases. The lowest TIME/DIV range
is 100
µ
s/division.
-
Press the right side of the DELAYED TIME BASE TIME/DIV keys and verify
that the number of displayed periods increases. Proceed until the time scale
of 50.0
µ
s/division is reached.
-
Select ’trig’d’ from the DELAYED TIME BASE menu.
-
Press the front panel key TRIG1 if the DELAYED TIMEBASE is not triggered
on CH1. This is indicated in the lower right corner of the display.
-
Use the
∆
control to adjust the trigger level of DELAYED TIMEBASE for a
triggered display. The signal on the DEL’D TB time scale is visible.
-
Press the ANALOG key to switch the instrument back to analog mode
(’ANALOG MODE’ is displayed briefly.