Agilent Technologies U3401A Service Manual download pdf (Page 63)

Operations and Features 2

U3401A User’s and Service Guide 45

Trigger Mode

This multimeter has two types of trigger mode.

• Internal — triggers measurements continuously.

• External — triggers a measurement only when a direction is given.

The external trigger is used with a delay settling that has been set by the

multimeter automatically. The amount of trigger delay varies depending on

different function. When external trigger is enabled, the multimeter

determines the range for the primary display based on the input at that

time.

Autoranging response time is required before a reading is displayed when

you change the input after a trigger is received.

Procedure

1 Press to enter trigger mode and standby condition. The TRIG

annunciator will be lit and display is indicated with “–––––”.

2 Press to get a new value. After a measurement, the result will be

indicated and held on the display.

3 Press to get a new value again.

4 Press , or to select autoranging or manual range as

necessary.

5 Press to disable external trigger operation mode.

Figure 2-10 Typical Trigger mode display

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Agilent Technologies U3401A Service Manual Page 63