Operators Manual Owner manual

Operator's Manual

Front Panel Trigger Controls

Level knob- Changes the trigger threshold level (V). The

number is shown on the Trigger descriptor box. Pushing the

knob sets the trigger level to the 50% point of the input

signal.

READY and TRIG'D Indicators - The READY indicator is lit

when the trigger is armed. TRIG'D is lit momentarily when a

trigger occurs. A fast trigger rate causes the light to stay lit

continuously.

Setup - CCorresponds to the menu selection Trigger → Trigger Setup. Press it once to open the Trigger

Setup dialog and again to close the dialog.

Auto - Sets Auto trigger mode, which triggers the oscilloscope after a time-out, even if the trigger

conditions are not met.

Normal - Sets Normal trigger mode, which triggers the oscilloscope each time a signal is present that

meets the conditions set for the type of trigger selected.

Single - Sets Single trigger mode, which arms the oscilloscope to trigger once (single-shot acquisition)

when the input signal meets the trigger conditions set for the type of trigger selected. If the scope is

already armed, it will force a trigger.

Stop - Prevents the scope from triggering on a signal. If you boot up the instrument with the trigger in

Stop mode, a "No trace available" message is shown. Press the Auto button to display a trace.

Front Panel Horizontal Controls

The Horizontal Front Panel group corresponds to the Timebase dialog.

Delay knob - Turn to change the Trigger Delay value (S). Push the knob to reset Delay to

zero.

Horizontal Adjust knob - If the trace source is an input channel, turn this knob to set the

Time/division (S) of the oscilloscope acquisition system. The value is shown on the

Timebase descriptor box. When using this control, the oscilloscope allocates memory as

needed to maintain the highest sample rate possible for the timebase setting. If the

trace source is a zoom, memory or math function, turn the knob to change the horizontal

scale of the trace, effectively "zooming" in or out. The value is shown on the

corresponding descriptor box. Push the knob to change the setting in fine increments;

push it again to return to 1, 2, 5, 10 step increments.

922499 Rev B