Teledyne LeCroy HDO 4000 Getting Started Guide - Manual (Page 18)

923010-00 Rev A
SET UP 14
To connect the leadset to the oscilloscope, push the connector into the
mixed signal interface below the front panel until you hear a click.
To remove the leadset, press in and hold the buttons on each side of the
connector, then pull out to release it.
Digital Leadset
Standard with all HDO4000-MS model oscilloscopes, the digital leadset
enables input of up-to-16 lines of digital data. Lines can be organized into
four logical groups and can be named appropriately.
The digital leadset features two digital banks with separate threshold and
hysteresis controls, making it possible to simultaneously view data from
different logic families.
Each flying lead has a signal and a ground connection. A variety of
ground extenders and flying ground leads are available for different
probing needs. In order to achieve optimal signal integrity, you should
connect the ground at the tip of the flying lead for each channel used in
your measurements. Use either the provided ground extenders or ground
flying leads to make the ground connection.