Triggering & Delay Toolbar; Internal Auto Level Trigger - Ladybug PowerSensor+ LB480A Product Manual

Models LB480A/LB680A USB PowerSensor+™
Product Manual PPA (Pulse Profiling Application)
Triggering & Delay Toolbar

Internal Auto Level Trigger

Various triggering methods are provided from this toolbar. The Internal Auto Level trigger is determined by sampling
the incoming signal. The general algorithm is as follows:
 Sample the incoming signal
 Examine the data for maximums and minimums
 Set the trigger level between the maximum and minimum (favoring the maximum)
 Take a trace using the standard process (same as manual trigger)
The Internal Auto Level is set for each trace so as the input varies the auto trigger level will be adjusted accordingly.
Therefore, while the Internal Auto Level is more convenient (and quite reliable) it also can be somewhat less
responsive. The Internal Auto Level trigger source is not recommended when peak input levels fall below
approximately -50dBm (See Internal Manual Level trigger for inputs below -50 dBm).
All trigger modes can use positive or negative Edge triggering as well as Cont (continuous) or Sngl (single) sweep.
The trigger Delay function (up to 10 msec) must be enabled/disabled from the delay window as shown below. The
standard LB480A power sensor has External TTL input/output connectors labeled TI/TO (SMB-male). See the trigger
limits in the specifications section of this document (or the LB480A data sheet) to employ the External TTL trigger
capability utilizing the trigger connectors on the sensor body.
Revision: 08/02/11
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