Ceyear 4051 Series, User Manual

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5 Menu
5.2. Description of menu
556
[VBW/RBW Auto Man]
● Menu description: to set the ratio between the current video bandwidth and resolution bandwidth with the
default value as 1. As the resolution bandwidth changes, the video bandwidth changes to maintain this
ratio. The ratio should be displayed on the input area and used for the coupling mode of those two kinds
of bandwidth. When a new ratio is selected, change the video bandwidth to meet this new ratio and the
resolution bandwidth should remain unchanged.
● Key path:
【
BW
】
, [VBW/RBW Auto Man] on the front panel.
● Status saved: saved in the instrument status.
●
Factory preset: auto with VBW/RBW as 1.
●
Setting range: Min.:0.0001, Max.: 300000.
● Remote Command:
[:SENSe]:TOI:BANDwidth|BWIDth:VIDeo:RATio <number>
[:SENSe]:TOI:BANDwidth|BWIDth:VIDeo:RATio?
● Examples:
:TOI:BAND:VID:RAT 2
[Span/RBW Auto Man]
●
Menu description: to set the ratio between the current span and resolution bandwidth and display it in the
input area. This ratio is used in coupling mode of the resolution bandwidth.
● Key path:
【
BW
】
, [Span RBW Auto Man] on the front panel.
● Status saved: saved in the instrument status.
● Factory preset: auto with span/RBW as 106.
● Setting range: Min.:2, Max.: 10000.
●
Remote Command:
[:SENSe]:TOI:FREQuency:SPAN:BANDwidth[:RESolution]:RATio <integer>
[:SENSe]:TOI:FREQuency:SPAN:BANDwidth[:RESolution]:RATio?
[:SENSe]:TOI:FREQuency:SPAN:BANDwidth[:RESolution]:RATio:AUTO OFF|ON|0|1
[:SENSe]:TOI:FREQuency:SPAN:BANDwidth[:RESolution]:RATio:AUTO?
5.2.9.5 Auto Setting
Pop up the soft menu related to auto setting including [Couple All], [Mech Atten Auto Man], [Res BW Auto
Man], [Video BW Auto Man], [VBW/RBW Auto Man], [Span/RBW Auto Man], [Sweep Time Auto Man]
and [CF Step Auto Man].
[Couple All]
● Menu description: to set the resolution bandwidth, video bandwidth, sweep time, mechanical attenuator
and frequency step as auto coupling mode. The signal/spectrum analyzer will select most suitable values
for those functions based on set frequency and bandwidth (or start frequency and stop frequency). If no
ratio is pre-saved, use default ratio.
● Key path:
【
Auto Set
】
, [Couple All] on the front panel.
● Status saved: not saved in instrument status.