3-1
IM DL850E-01EN
3 Horizontal Axis
Time Axis Setting (TIME/DIV)
When the internal clock is being used, the time axis scale is set as a length of time per grid division (1 div).
The time axis scale can be set within the following ranges: 100 ns/div
*
to 30 s/div, 1 min/div to 30 min/div, 1
hour/div to 12 hour/div, and 1 day/div to 20 day/div. The transition from seconds to minutes to hours to days
occurs automatically. Because the horizontal display range is 10 div, the amount of time on the waveform that is
displayed is equal to the time axis setting × 10.
* When the 720210 (HS100M12) module is installed, the scale range starts at 100 ns/div; when it is not
installed, the scale range starts at 1 μs/div.
1 div = 500 µs
10 div = 5 ms
1 div = 1 ms
10 div = 10 ms
Internal and External Clocks (Time base selection)
Under the initial settings, the DL850E/DL850EV samples the waveform data using the clock signal produced by
its internal time-base circuit (internal clock).
You can also use an external clock signal to control sampling. Apply the external clock signal to the external-
clock input terminal on the left panel of the DL850E/DL850EV. This external clock input is useful for
synchronizing to the clock signal of the waveform that is being measured.
When you control sampling using an external clock, you cannot change the time axis setting. To change the
time-axis display range, change the record length or zoom in on the time axis.
