Combining Parameters for Signal Generation

Using the Agilent 81133A/81134A Pulse Generator

Start Mode

When the Ext. Input start mode is selected, the instrument sends the generated signal to the outputs according to the signal applied at the Start In connector.

You can define the following parameters that the external signal must meet:

Threshold (voltage)

Termination voltage

Edge (rising/falling)

If you select the Ext. Input mode, the instrument automatically switches in armed mode. This means, the instrument waits for the selected edge to appear.

The further behavior of the instrument depends on the selected instrument mode:

In Burst Mode:

As soon as the selected signal appears at the input, the armed mode is deactivated (the instrument sends one burst and then stops).

In Pulse/Pattern and Repetitive Burst Mode:

The instrument stays in armed mode (it sends the pattern/burst every time the selected signal appears). The trigger output frequency is calculated by dividing the instrument frequency by the length of the data pattern.

Trigger Out

The trigger output can be set to one of the following modes:

Trigger on pulse

The trigger output is generated according to the instrument frequency. It can optionally be divided by 1 up to 2 31 - 1 optionally.

Trigger on data

One trigger pulse is generated on every start of the repetitive data pattern. The trigger output frequency is calculated by dividing the instrument frequency by the length of the data pattern.

Agilent 81133A/81134A Pulse Generator User’s Guide, January 2005

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Agilent Technologies 5988-7401EN manual Start Mode, Trigger Out

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