Ceyear 4051 Series, User Manual

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5 Menu
5.2. Description of menu
464
[Ref Level Offset ]
● Menu description: to introduce offset for all amplitude readout (e.g, reference level and marker
amplitude). It will not change the trace position on the screen. This offset unit is dB and is not affected by
the scale and unit. Use number keys, stepping keys or knob to input the offset value.
●
Key path: 【 Ampld/Y Scale 】 Ampld/Y Scale, [More 1/2 ▶ ], [Ref Level Offset] on the front panel.
●
Status saved: saved in the instrument status.
●
Factory preset : 0 dB.
● Setting range: Min.: -1000dB, Max.:1000dB.
● Remote Command:
:display:obwidth:window:trace:Y:rlevel:offset <rel_ampl>
:display:obwidth:window:trace:Y:rlevel:offset?
● Examples:
:display:obwidth:window:trace:Y:rlevel:offset 12
5.2.4.3 Span/X Scale
Press the
【
Span/X
Scale
】
on the front panel to enable the span function and set the signal/spectrum
analyzer into center frequency/span mode. Press the [Span] key to pop up [Span], [Full Span] and [Last Span].
[Span]
● Menu description: the span can be set by number keys, stepping keys or knob. Use number keys or select
[Zero Span] to set the span as zero.
●
Key path: 【 Span/X Scale 】 , [Span] on the front panel.
● Status saved: saved in the instrument status.
●
Factory preset: maximum frequency limit - start frequency.
●
Setting range: Min.: 10Hz, Max.: related to the maximum working frequency limit of the instrument.
● Remote Command:
:obwidth:frequency:SPAN <freq>
:obwidth:frequency:SPAN?
● Examples:
:obwidth:frequency:SPAN 10 MHz
[Full Span]
●
Menu description: to set the signal/spectrum analyzer into the center frequency/span mode. Set the span
as maximum value.
● Remote Command:
:obwidth:frequency:SPAN:FULL
[Last Span]
●
Menu description: to set the signal/spectrum analyzer back to the previous span.
● Remote Command: