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HOW TO USE THE INSTRUMENT 4 - 23
TIMEBASE AUTO RANGE
The AUTO RANGE function continuously adjusts the timebase to a
display of 2 to 6 waveform periods.
- Press the AUTO RANGE key.
Observe that the timebase of the signal display changes to display 2 to 6 signal
periods. AUTO TB in the upper right corner of the display indicates that the AUTO
RANGE timebase function is active.
- Press one of the TIME/DIV keys.
The AUTO RANGE function is switched off and the AUTO TB indication
disappears.
TIMEBASE MAIN TB VAR
Fine adjustment of timebase speeds between the 1-2-5 steps
can be made by simultaneously pressing the MainTB TIME/DIV
keys.
- Activate the VAR function by simultaneously pressing the TIME/DIV keys.
- Press one key of the MainTB VAR keys.
Observe that the timebase indication is now changing continuously instead of
following the 1-2-5 step sequence.
The VAR timebase readout values are calibrated values. This enables accurate
timing measurements using VAR timebase settings.
-
Adjust MainTB VAR to 850
µ
s/div.
- Turn off the VAR function by pressing the MainTB TIME/DIV key pair
simultaneously.
Observe that the timebase is set to the nearest step value (1 ms/div).
In the Digital mode, the timebase speeds are determined by an XTal oscillator.
AUTO
RANGE
ST6710
TIME/DIV