TIMEBASE AND ACQUISITION SYSTEM
Timebase Setup and Control
Set up the timebase by using the front panel Horizontal controls, just as for analog scopes.
For additional timebase setups
1. Touch Timebase in the menu bar, then Horizontal Setup... in the drop-down menu. The
"Horizontal" dialog appears.
2. Touch inside the Time/Division data entry field and enter a value using the pop-up numeric
keypad, or use the up/down arrows to adjust the value.
3. Touch inside the Delay data entry field and type in a value, using the pop-up keypad. Touch
the Set To Zero button to set the delay to zero.
4. Touch the SMART Memory button or tab and adjust the memory as needed.
Autosetup
When channels are turned on, Autosetup operates only on those turned-on channels. If no
channels are turned on, all channels are affected. When more than one channel is turned on, the
first channel in numerical order with a signal applied to it is automatically set up for edge
triggering.
You can perform an autosetup of all these functions together by simply pressing
on the
front panel, or by touching Autosetup
in the Vertical, Timebase, or Trigger
drop-down menu.
SDA DBI Controls
The SDA 18000/13000/11000/9000 oscilloscopes achieve higher bandwidth and sample rate
using an innovative LeCroy technology called Digital Bandwidth Interleaving (DBI). This
technology allows resources to be borrowed from unused channels to multiply not only sample
rate but also bandwidth.
SDA18000 DBI Controls
When 18 GHz is selected, the active channels are either C1 or C4 or
both, providing 60 GS/s sampling on the 18 GHz channel, and 20 GS/s
sampling on the 6 GHz channel.
When 11 GHz is selected, the active channels are C1, C3 and C4. The
11 GHz channel provides 40 GS/s sampling, while the 6 GHz channels
provide 20 GS/s sampling.
When 6 GHz is selected, all 4 channels are active, each providing 20
GS/s.
72 SDA-OM-E Rev H
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