Ceyear 4041 Series, User Manual

Page: 74 / 203

Chapter IV Spectrum Analyzer Mode
62
4.3.4 Amplitude menu
Ref Level
0.0dBm
Amplitude
Ref Position
Atten
Auto Man
Scale/Div
10.0dB
Scale Type
Log Lin
Units
dBm
Pre Amp
Off On
>
·[Ref Level] : Press
【
Ampt
】
→[Ref Level], use the numeric keys on the front panel,
and then select [dBm], [-dBm], [mV] and [μV] in the frequency unit menu or
【 ↑ 】
,
【
↓
】
and the knob to set the reference level.
·[Ref Position] : Press
【
Ampt
】 →[Ref Position], and select the position of reference
line in the rectangular graph by clicking the corresponding numeric keys.
·[Atten Auto Man] : Press
【
Ampt
】
→[Atten Auto Man] to adjust the input attenuation
of spectrum analyzer. The input attenuator is associated with the reference level in the
automatic mode. The numeric keys, step key or knob can be used to adjust the
attenuation of attenuator in the manual mode. The range of attenuation is 0 dB - 50 dB.
·[Scale/Div] : Press
【
Ampt
】 →[Scale/Div] to adjust the size of screen ordinate gridline;
use the numeric keys on the front panel, and then select the frequency unit or
【
↑
】
,
【
↓
】
and the knob for setting. The value between 0.1 dB/division and 20 dB/division can be
selected. The default value is 10 dB/division.
·[Scale Type Log Lin] : Press
【
Ampt
】
→[Scale Type Log Lin] to select the type of
ordinate axis scale, namely logarithmic or linear scale. The default units of logarithmic
and linear scales are dBm and mV respectively.
·[Units] : Press
【
Ampt
】
→[Units] to select the unit of ordinate axis, including [dBm],
[dBmV], [dBuV], [Volt], [Watt], [A], [dBW], [dBV], [dBA], [dBmA] and [dBuA].
·[Pre Amp Off On] : This function is used to control the on-off state of preamplifier
and can be activated only when the reference level is less than -40 dBm.
·[Special Attention]: When the preamplifier is on, be careful not to input a signal
more than +13 dBm; otherwise, the preamplifier will be damaged.