Front-Panel Menu Operation
81150A and 81160A User’s Guide 35
Triggered generates exactly one ‘signal’ when the trigger condition is met
In the external trigger mode, the 81150A / 81160A will accept a hardware
trigger applied to the front-panel External In connector. The 81150A /
81160A initiates one sweep or outputs one burst each time External In
receives a pulse with the specified edge.
To select the external source, follow these steps:
Press the key on the front panel.
Press Source softkey to select External In as the source. Upon
pressing the Source softkey while the highlight is on the trigger
source, the instrument allows you to choose one of the available
trigger sources. The value can also be changed by turning the Rotary
Knob.
To specify whether the 81150A / 81160A triggers on the rising or falling
edge, follow these steps:
Press the key on the front panel.
Select the desired edge by pressing the Ext-In Sense softkey.
Change the value either by pressing the softkey or by turning the
knob.
Gated starts the generation of ‘signals’ as long as the gate is active.
The active level (high or low) at External In enables waveforms, bursts or
sweeps. The last waveform, burst or sweep is always completed.
In internal triggered mode, the instrument triggers a single waveform cycle,
sweep or burst at an adjustable trigger rate.
E.g. generate a pulse every 250ms
This mode is enabled by pressing the key on the front panel and
then setting source to Internal. As soon as Source is set to Internal, the
trigger frequency/period can be adjusted by navigating to Int Freq or Int.
Period (depends on which of the two is currently active). Switching between
Int Freq and Int Period is done by navigating to the internal trigger
frequency/period and then pressing the corresponding softkey.
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