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

38
Duration of pulse The duration of the output signal
Until Reset The output will remain high after a valid trigger, until the channel is
reset
Inverted Output Check the box to set the output high until a valid trigger.
On the Triggering tab choose:
Normal The channel can retrigger an unlimited number of times
Skip N triggers The channel triggers only after the specified number of valid input
pulses (between 0 and 2,147,483,647).
Retrigger N times Limits the number of retriggers allowed between resets (between 0 and
2,147,483,647). To allow a channel to be triggered again after reaching
the limit, press the Reset button on the Model 725 or choose Program
> Reset Channels in timerPRO.
Trigger on input high While the input is high, channel can be repeatedly triggered.
Trigger on rising input Sets the channel to be edge triggered (i.e., an input signal that stays
high will only trigger the channel once).
The front panel LED for the noise suppression channel will glow green until an input signal is
detected. It will then glow red until the duration period has elapsed. At this point, the LED will
respond as follows:
Retriggering
enabled?
Edge
trigger?
LED
no yes or no remains red (no more triggers accepted)
yes no glows green (waiting for next trigger)
yes yes is off; glows green when trigger goes low










