Ceyear 4051 Series, User Manual

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5 Menu
5.2. Description of menu
356
● Menu description: to enable the stop frequency and set the signal/spectrum analyzer into the start
frequency/stop frequency mode. Use number keys, stepping keys or knob to change the stop frequency.
In changing stop frequency, if the selected stop frequency is less than the start frequency, the latter one
will automatically decrease till equaling to the difference of stop frequency minus minimum span (100Hz
multiply N, where, N is the harmonic order of local oscillator).
●
Key path: 【 Frequency 】 , [Stop Freq] on the front panel.
● Status saved: saved in the instrument status.
●
Factory preset: depend on maximum frequency limit of signal/spectrum analyzer.
●
Setting range: Min.: 0Hz; Max.: maximum frequency limit of signal/spectrum analyzer
● Default unit: Hz
● Remote Command:
[:sense]:frequency:STOP <frequency>
[:sense]:frequency:STOP?
● Examples:
:FREQ:STOP 1600 MHz
[CF Step Auto Man]
●
Menu description: to change the steps of center frequency, start frequency or stop frequency. When it is
under [Auto Mode], and when the center frequency is active, press the step key, the [CF Step] changes
by 1, 2, 5 and 10. When it is under Auto Off mode, use the number keys, stepping keys or knob for
change. At this time, reactivate the [Center Freq], and press the step key, the center freq will change by
set step size. This function is extremely useful to quickly change the center frequency to the input signal
harmonic. For example, observe the harmonic of 300 MHz input signal, and set the [CF Step Auto
ManMal] as Auto OFF, and input 300 MHz. If the current center frequency is 300 MHz, press the
stepping key to increase the center frequency to 600 MHz. Press the stepping key again to increase the
center frequency by 300 MHz to 900 MHz. The shaded status of [CF Step Auto Man] More indicates
whether the step is set as Auto On or Off. When the step is under Auto Off, select the Auto On from [CF
Step Auto Man] to return to Auto On status.
● Key path: 【 Frequency 】 , [CF Step Auto
Man
] on the front panel.
● Status saved: saved in the instrument status.
● Factory preset: depend on maximum frequency limit of signal/spectrum analyzer.
● Setting range: Min.: 1Hz; Max.: maximum frequency limit of signal/spectrum analyzer
● Default unit: Hz
● Remote Command:
[:sense]:frequency:center:STEP[:increment] <freq>
[:sense]:frequency:center:STEP[:increment]?
[:sense]:frequency:center:STEP:AUTO OFF|ON|0|1
[:sense]:frequency:center:STEP:AUTO?
●
Examples:
:FREQ:CENT:STEP 100 MHz
:FREQ:CENT:STEP:AUTO ON