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
13
General Settings
The General Settings screen lets you control functions that affect all channels of the Model 725.
To reach this screen, click the General Settings button, or choose Channel>General.
Disable/Enable I/O
On occasion you will need to abort an experiment or quickly place all outputs to your equipment
in a “safe” state. Each of the tabs of the General Settings screen includes buttons that let you
“disable” and “enable” all inputs and outputs to the Model 725. With I/O disabled, input signals
are ignored. Each output will be held at either a logic low or logic high, depending upon its
channel properties. We’ll refer to the “safe” voltage that a channel produces when disabled as the
“quiescent state” (see Channel Properties: Quiescent States). To restore channels functions, click
the Enable I/O button. These functions are nonvolatile: the enabled and disabled states are
restored on power cycle.
You can also disable or enable inputs and outputs from the Model 725 front panel (see
Experimenting: Disable/Enable All).