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

19
It is important to distinguish between the eight physical input jacks, in1–in8, and the eight timing
channel inputs. Any combination of the physical inputs can be used to trigger the channel inputs.
The following assignment is incorrect:
outA = in1;
because it attempts to trigger a channel output rather than a channel input, inA–inH
This assignment is also invalid:
in1 = in2;
because it attempts to assign a value to External Input 1.
Finally, this assignment is invalid:
inB = inA;
because it attempts to assign a value from one channel input to another.
Parsing
When you have completed a logical assignment, click the Apply button. timerPRO will check
your syntax and logic and will report any mistakes to you by line number.
Sending Logic
If you change channel logic you must transfer those changes to the Model 725 to implement them.
To transfer logic to the Model 725, click the Set All Channels button
, or choose
Program >Program All Channels.
While the logic is transferring, the Power LED on the Model 725 will turn red. This transfer
typically takes only a second, though it may take slightly longer for complex programs.
After the transfer, the logic settings reside in the Model 725, even if you turn the unit off or
disconnect it from the PC.










