User manual

PicoScope 6 User's Guide 143

First, set the Starting edge to either Rising or Falling according to the

polarity of the edges you are interested in.

Next, select one of the four Condition options:

Greater than triggers when the second edge occurs later than Time1

after the first edge (useful for detecting missing events).

Less than triggers when the second edge occurs earlier than Time1

after the first edge (useful for detecting timing violations and spurious

edges).

Inside time range triggers when the second edge is later than Time1

after the first edge and earlier than Time2 (useful for finding valid

edges).

Outside time range triggers when the second edge is earlier than

Time1 after the first edge or later than Time2 (useful for finding

spurious edges).

Finally, set up Time1 (and Time2 if present) to define the time interval.

Window pulse width. This is a combination of the window trigger and the

pulse width trigger. It detects when the signal enters or leaves a voltage range

for a specified period of time.

Level dropout. This detects an edge followed by a specified time with no

edges. It is useful for triggering on the end of a pulse train.

Window dropout. This is a combination of the window trigger and the dropout

trigger. It detects when the signal enters a specified voltage range and stays

there for a specified time. This is useful for detecting when a signal gets stuck

at a particular voltage.

Runt. Detects a pulse that crosses one threshold and then falls below the same

threshold, without crossing the second threshold. This is typically used for

finding pulses that fail to reach a valid logic level.

Digital. (MSO devices only) Triggers on a combination of the state of the

digital inputs and a transition (edge) on one digital input. See Digital trigger.

Logic. This detects a logical combination of the scope's inputs. The conditions

that can be applied to each input vary: analog inputs can be edge-, level- or

window-qualified; EXT and D15...D0 (if present) are level-qualified with a

variable threshold; and AUXIO is level-qualified with a fixed TTL threshold. See

Logic trigger.