Ceyear 3943B, Руководство по эксплуатации

Страница: 40 / 167

4 Operation Guide
4.1 Function operation guide
32
b) Press [Squelch Level] area to pop up the squelch level digital slide bar, and select [On] to turn on
the squelch level switch.
c) Drag the middle slider to move left and right to adjust the squelch level value. The squelch level
value is used to control the playback of demodulation sound. When the level of demodulated signal
is greater than the squelch level, the demodulated signal is played by sound.
Fig. 4.2 Display Image of Signal Demodulation Window
4.1.1.3 Modification of reference level
The reference levels of IF and RF spectrum can be modified in two ways:
1) Touch operation:

The reference level can be modified by sliding down the corresponding window with a single finger.

The reference level and level range can be modified by zooming with two fingers in the
corresponding window.
2) Set parameters:
a) After activating the IF spectrum window, press [Parameter] area in the bottom menu to pop up the
parameter dialog box, and click [Show Related] property page.
b) Press [Maximum Level] number display area, and enter the upper limit value of the display level with
the number keys.
c) Press [Minimum Level] number display area, and enter the lower limit value of the display level with
the number keys.