Owner manual
Table Of Contents
- Parts List
- Specifications
- Basic Functions
- How You Will Use the Model 725
- Installing timerPRO Software
- Setting Up the Model 725
- Field Upgradeable Software
- Getting Help
- Back Panel Inputs and Outputs
- Front Panel Controls
- Main Screen
- General Settings
- Channel Properties Screen
- Quiescent States
- Logic
- Timing Modes
- “Apply” versus “Program All Channels”
- Fixed Output Mode
- Passive Mode (Output = Input)
- Clocked Pulse Stream Mode
- Delayed Pulse After Trigger Mode
- Important Delay Timing Considerations
- Validated Trigger Input Mode (Noise Suppression)
- Timer Mode
- Dynamically-Delayed Pulse Mode
- Toggled Output Mode
- Dynamic Delay Compensation Mode
- Storing and Recalling Experiment Files
- Front Panel Controls and Indicators
- Selecting a Channel from the Front Panel
- Performing a Front Panel Function
- Store/Recall Settings Profiles
37
Validated Trigger Input Mode (Noise Suppression)
The noise suppression function eliminates false triggers due to noise on the input signal by
requiring the signal to remain high (or low) for a specified duration. If the signal drops out during
that period, the output will remain low and the channel will look for the next input signal. Once an
input signal is deemed “valid,” a pulse of user-specified duration will be sent to the channel
output.
Unlike an analog filter which “smears” the signal edge, this noise suppression function digitally
blocks false triggers, retaining the sharp edges on the real trigger signal.
As with Delayed Pulse After Trigger mode, you have additional controls over the channel.
On the Validate tab, choose:
Minimum duration The minimum length of an input pulse that will trigger the channel