Classroom
- Measurement basics
- Multi Channel measurement software
- Application notes
- Frequently used terms
- Aliasing
- Auto setup
- Arbitrary Waveform Generator
- Bandwidth
- Bus types
- CMRR
- Data logger
- Differential attenuator
- Differential input
- Edge trigger
- Envelope mode
- Function generator
- Input range
- Multimeter
- Oscilloscope
- Pre trigger
- Record length
- Resolution
- Sample frequency
- Sampling
- Scope
- Signal coupling
- Single ended input
- Spectrum analyzer
- Total Harmonic Distortion
- Time base
- Transient recorder
- Triggering
- Force Trigger
- Trigger hold-off
- Trigger hysteresis
- Trigger level
- Trigger source
- Trigger time out
- Trigger type
- TV trigger
- USB
- Voltmeter
- Window trigger
- How to install a driver
Trigger source
Several different trigger settings are available which determine how the system will trigger on a signal. The trigger source setting of the instrument determines which trigger signal(s) is/are used to trigger the instrument.
The trigger source can be set to a single channel or to any combination of channels or other trigger sources. The sources can be logically combined using OR and AND functions. In the image below, the trigger source is set to Ch1.
When no trigger source is selected, the trigger system is disabled and the instrument is free-running: it will start measuring the post samples directly.
Digital external
Besides the normal input channel triggers, most TiePie engineering instruments have an external trigger input, which can be used to connect a trigger signal. This is usually a digital (TTL) input. Trigger level and hysteresis can not be set for this trigger input, but the edge (rising or falling) the system should react to can be set.
Analog external
Some TiePie engineering instruments also have an analog external trigger input. This input behaves like a normal input channel, with sensitivity settings and signal coupling. For this trigger input, level, hysteresis and type can be set, just as for a normal input channel.
Generator-trigger
The Handyscope HS3 is equipped with an Arbitrary Waveform Generator (AWG). This generator has internal trigger signals that can be used as trigger source:
-
Generator Start
This signal is generated when continuous generation or burst generation is started, either by the Start button or by an external trigger signal. -
Generator New Period
This signal is generated when the whole buffer of the AWG has been processed and the AWG starts at the beginning of the buffer again. -
Generator Stop
This signal is generated when continuous generation of burst generation is stopped by the the Stop button or burst generation is stopped because the required number of periods has been generated.
Changing trigger source
Changing the trigger source of an instrument in the Multi Channel software can be done in various different ways:
- Right-clicking the instrument in the Object Tree and selecting Trigger source and then the required value in the popup menu.
-
Clicking the trigger source label in the combined Time out + Trigger source indicator
on the instrument toolbar and
selecting the required value from the popup menu.
-
Dragging the trigger symbol
from one axis to another axis in a graph.
- Right-clicking the trigger symbol on an axis and selecting Move to and then the required value in the popup menu.
-
Using the Trigger source on button
on the channel toolbar for the required channel.