Agilent Technologies ENA Series Guia do Utilizador descarregar pdf (Página 252)

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246 Chapter 5

Making Measurements

Setting the low-latency external trigger mode

In the low-latency external trigger mode, variations in delay time between the reception of

a trigger and the start of a one-point measurement are decreased for point trigger

measurement by using trigger pulses supplied to the external trigger input terminal. In

addition, using this mode will allow you to decrease the variations in the time required to

be ready for the next measurement trigger after execution of a one-point measurement.

This mode allows you to perform continuous point trigger measurement in sync with

external trigger pulses and accurately set a trigger delay time at each point-trigger point.

NOTE The time required for measurement at each measurement point varies depending on the

settings of the E5070B/E5071B and the type of measurement. For more information, see

“External trigger delay time and point trigger interval” on page 247.

The low-latency external trigger mode becomes available by turning on the point trigger

function and setting the trigger source to “External.”

NOTE If the trigger source is not the external trigger, the low-latency external trigger mode does

not work if it is specified to ON.

The setting of the low-latency external trigger mode is valid for all channels.

Procedure to set the low-latency external trigger

1. Setting the low-latency external trigger

If the trigger source is set to “External” and the trigger event to “On” (On Point), set the

low-latency external trigger mode.

Step 1. Press .

Step 2. Press

Low Latency.

2. Setting the external trigger delay time

Set the external trigger delay time at each point. The setting resolution is 10 μs.

Table 5-5 Low-latency external trigger mode

Low-latency external trigger

mode

Function

On Sets the low-latency external trigger mode to ON.

The external trigger delay time becomes valid.

Off Sets the low-latency external trigger mode to OFF.

Softkey Function

ON Sets the-low latency external trigger mode to ON.

OFF Sets the-low latency external trigger mode to OFF.

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