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Chapter 4 201
Key Function Descriptions
Key Function Tables
EXTERNAL TRIG Sets the trigger to external mode. Connect
external trigger source to J5 (EXT/GATE
TRIG INPUT) on the rear panel. When this
mode is selected, a T appears on the left side
of the display.
FOCUS DISPLAY Permits focusing of the display on E-series
instruments, using the data keys, the step
keys, or the knob.Note: EC-series
instruments do not require adjustment and
are not adjustable.
FREE RUN TRIG Sets the trigger to free-run mode; sweep
triggers occur as rapidly as the spectrum
analyzer will allow.
FREQ DSP ON OFF DISPLAY Turns off all frequency related annotation.
Press PRESET to restore annotation.
GATE CTL EDGE LVL SWEEP Selects the use of edge triggering or level
triggering to control the gate.
GATE DLY [ ] SWEEP Controls the length of time from the trigger
until the gate is turned on.
GATE LEN [ ] SWEEP Controls the length of time that the gate is
on when using edge triggering.
GATE ON OFF SWEEP Turns the gate function on and off.
GATED VIDEO SWEEP Accesses the menu of functions for setting
gate parameters.
GRAT ON OFF DISPLAY Turns the display graticule on and off.
INTENSITY DISPLAY Permits changing the display intensity on
E-series instruments, using the data keys,
step keys, or the knob. Note: EC-series
instruments do not require adjustment and
are not adjustable.
LINE TRIG Sets the trigger to line mode; sweep triggers
occur at intervals synchronized to the line
frequency. When this mode is selected, a T
appears on the left side of the display.
LVL POL POS NEG SWEEP Selects the polarity for turning the gate on
when using level triggering for a gated
measurement.
MAX HOLD A TRACE Displays and holds the maximum responses
of the input signal in trace A.
Table 4-4 Control Functions
Control Keys Access Key Description
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