Rigol DL3021A [109/163] Trigger operation

Chapter 2 Front Panel Operations RIGOL

DL3000 User’s Guide 2-79

Trigger Operation

Trigger operation is commonly used in transient test function (Con, Pul, and Tog) and

List function. The load supports three triggering modes to allow synchronization with

other DUT. They are Tran trigger, Bus trigger, and DIGIO trigger. Before enabling the

trigger function, please select a trigger type first.

 Transient Trigger (TRAN)

In the local operation mode, press the TRAN key on the front panel, and then

one trigger operation is executed. At this time, "TRAN" at the top of the main

interface is highlighted and active.

 Bus Trigger (BUS)

When the load receives the remote triggering command (:TRIG:IMM) via the

interface, the load will perform one trigger operation.

 Digital I/O Trigger (DIGIO)

The digital I/O interface on the rear panel of the load can be used to receive the

external trigger signal. When the external trigger is in effect, the load will

perform one trigger operation once a low pulse is received over the trigger

terminal. The trigger output signal over the digital I/O interface can be used to

trigger an external device, such as a digital oscilloscope, an electronic load, and

other products.

Slew Rate and Minimum Transition Time

Slew rate is defined as the change in current, resistance, or voltage over time. It is

the speed of transition from one setting to another. You can set the actual transition

time from one setting to another by changing the slew rate. Figure 2-46 shows the

relationship between the set slew rate and the transition time. The slew rate

determines the minimum transition time between two settings. When the slew rate is

set to be a maximum value, it indicates that the transition time between the two

settings is the smallest.

Tip

Turning the short circuit on does not affect the set values of the current

parameters, and the load will return to the previously set state when the short

circuit is turned off.