Programming

To Use Run-Time Control Mode

Setup of the

85330A Multiple

Channel Controller

Event Triggering

To Use Run-Time Control Mode

The setup for run-time operation includes setting:

The event triggering method

The number of frequency points

The number of angular increments

List of switch states

Switch settling time

TTL trigger and ready timeouts

Using more than one controller

Once the 85330A is set up, send the RUNT:INIT:IMM command to begin run-time operation. Figure 6-2 on page 6-16is a flow chart that illustrates the run-time measurement sequence. Commands are described in Chapter 7, “Remote Programming Command Reference.”

During run-time operation, the 85330A may use two different types of event triggering, TTL or IMM. Most angle scan measurements will be set up for TTL triggering, while TTL triggering can be suppressed for a frequency response measurement, typically at a single angle. Also, this IMM mode combined with the *OPC? command is useful for determining timing information of a multiple-frequency, multi-parameter measurement.

Applicable command: RUNTime:EVENte:TRIGger

Number of Frequency Points

The 85330A does not require a start, stop, or frequency step size. In fact, it does not require any frequency values. It only needs to know the number of frequency points so it can issue the correct number of triggers.

Applicable command: RUNTime:SOURce:COUNt

Number of Angular Increments (Events)

List of Switch States

The 85330A does not require any angular values. It only requires the number of angular increments so it can issue the correct number of triggers.

Applicable command: RUNTime:EVENt:COUNt

One must set up the list of channel addresses for the measurement. For each event trigger received by the 85330A, each channel address entry will be asserted and a subsequent trigger issued to begin a measurement of each data point.

Applicable command: RUNTime:SWITch:SCAN

6-12

85330A Multiple Channel Controller

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Agilent Technologies To Use Run-Time Control Mode, Setup 85330A Multiple Channel Controller Event Triggering