Teledyne LeCroy LabMaster 10Zi Getting Started Manual - Manual (Page 116)

Getting Started Manual
LM10Zi-GSM-E Rev A 109
Edge Trigger with Holdoff by Events (in this example, two events). The bold
edges on the trigger source indicate that a positive slope has been selected. The
broken, upward-pointing arrows indicate potential triggers, while the bold ones
show where triggers actually occur after the holdoff expires.
Auxiliary Input Trigger
Some instrument models provide auxiliary input trigger capability. It's
done as a pattern trigger, on the Ext dialog.
Select X1, or ÷10. You can also select from DC50Ω, Gnd, and DC1MΩ
Impedance values.