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ManualsBrandsPICO ManualsLaboratory Test EquipmentPC scope module Scope 3205 MSO 100 MHz 18-channel 250 null 32 null 8 Bit Digital storage (DSO), Function gener

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7.9.2

Advanced trigger types

The advanced trigger types can be switched on in the Advanced Triggering

dialog.

For all trigger types except Digital, the first step is to select which signal the scope

should use as the trigger; so set Source to either A, B, Ext or AuxIO. These names

correspond to the BNC input connectors on the scope device. Then choose one of the

trigger types below.

Simple Edge. This type provides the same Rising and Falling edge triggers

that are available from the Triggering toolbar . It is included in this dialog as

an alternative method of setting up the Simple Edge trigger.

You can set the trigger Threshold while in the advanced triggering dialog,

or alternatively you can drag the Trigger marker on the scope view.

This is the only trigger type that is compatible with ETS mode.

Advanced Edge. This trigger type adds an extra Rising or Falling edge

trigger, and Hysteresis, to the Simple Edge trigger. The Rising or Falling

option triggers on both edges of a waveform, and is useful for monitoring

pulses of both polarities at once. Hysteresis is described in a separate

topic.

Window. This trigger type detects when the signal enters or leaves a specified

voltage window. The Direction control specifies whether the trigger should

detect the signal entering the window, leaving it, or both. Threshold 1 and

Threshold 2 are the upper and lower voltage limits of the window. The order in

which you specify the two voltages does not matter. Hysteresis can be set

to reduce the number of false triggers on a noisy signal, and is described in a

separate topic.

Pulse Width. This trigger type detects pulses of a specified width.

First set the Pulse Direction to either Positive or Negative according to the

polarity of the pulse you are interested in.

Next, set one of the four Condition options:

Greater than triggers on pulses wider than the specified time.

Less than triggers on pulses that are narrower (useful for finding

glitches).

Inside time range triggers on pulses that are wider than Time 1 but

no wider than Time 2 (useful for finding pulses that meet a

specification).

Outside time range does the opposite: it triggers on pulses that are

either narrower than Time 1 or wider than Time 2 (useful for finding

pulses that violate a specification).

Next, set the trigger Threshold in volts or other units, or drag the Trigger

marker on the scope view.

Finally, set up Time 1 (and Time 2 if present) to define the pulse width.

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