25
1.9.2
Front Panel Control Knobs
Tuning (Spin) Knob
Incrementally changes the value of the highlighted digit in an alphanumeric entry field. Clockwise
rotation increases the value, counter-clockwise rotation decreases the value. The Tuning Knob affects the
R8100 in real time providing the equivalent of an analog rotational control at the cursor location for a
numeric entry. The knob also cycles through the selections available when a soft key activates a window
displaying user determined settings. The knob may be pushed (click) to perform the same function as the
Enter key
Sql. Knob
Squelch control. Clockwise rotation increases the receiver signal threshold level required to open the
squelch. The fully counter-clockwise position disabled squelch, i.e. forced open. The level in dBm is
displayed in the lower right corner of the main display. The level is applied to the input signal strength of
the RF carrier (not the recovered audio) so that measurements can be performed on un-modulated carriers.
For signals below the level, various demodulation operations cease, e.g. speaker audio is muted and the
Frequency Error and Deviation readings are blanked out.
The squelch threshold level range is based on RF Zone RF Zone / Monitor Mode Mon Port setting: Knob
tolerance is 4 dB.
Mon Port Minimum Maximum
Antenna
-130 dBm -20 dBm
RF In/Out -100 dBm +10 dBm
Note: Additional functions utilize squelch; see
and Voice Loopback for various test modes.
Vol. Knob
Controls volume of the speaker audio - a clockwise rotation increases the volume. Fully counter-clockwise
is muted.
Содержание R8100 SERIES
Страница 19: ...19 Figure 2 1 2 Left and Right Sides of the R8100...
Страница 164: ...164 Figure 2 2 7 7 5 Power Profile Frame with Markers...
Страница 224: ...224 Figure 3 2 9 6 1 Submenu after pressing Options soft key in the Settings menu...
Страница 243: ...243 PTC Test in Monitor Mode Eye Diagram Display...
Страница 244: ...244 Power Profile Display Linear and Circular Constellation Displays...
Страница 245: ...245 Symbol Distribution Plot...