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
23
Global Variables
“Local Variables” are those that are used directly in logic assignments, such as “inA” or “out1.”
Logical assignments that are used repeatedly in your experiment can be stored as “global
variables.” With global variables, complex logic is easier to read and debug.
Several channels in your experiment may need to be triggered by the same event. For example,
Channels F, G and H must trigger when:
(in1 or in2) and (outC or outD).
Rather than typing that logic each time, you may define it as a variable:
event1 = (in1 or in2) and (outC or outD);
Now you can use “event1” in the logic for Channels F, G and H:
inF = event1;
To view the global variables, click the Globals button on the Logic tab. The Global Symbols
dialog box screen will open: