Hameg HM8134-3, Руководство пользователя

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Types of Modulation
the four context sensitive keys
5
. For more details, refer
to paragraph 3.6 SETTING PARAMETERS.
The deviation (step 100 Hz) may be changed from:
❙±200 Hz to ±150 kHz (<16 MHz)
❙± 2 kHz to ±400 kHz (16 - 250 MHz)
❙± 1 kHz to ±100 kHz (250 - 500 MHz)
❙± 1 kHz to ±200 kHz (500 -1000 MHz)
❙± 2 kHz to ±400 kHz (1000 -1200 MHz)
The return to the previous menu is possible by pressing
the PREV. key
3
and the return to the main display by
pressing the ESC key
13
.
Example 8:
For FM sine, the display shows:
(deviation: 400 kHz)
Example 9:
For FM square, the display shows:
CH1: modulation signal
CH2: modulated signal (deviation: 80 kHz)
4.3 Phase modulation (PM)
After selecting DEV (PM MEMU) using the context sensi-
tive keys
5
, the display shows:
A new value of this deviation can be entered from the data
keypad
11
or modified by t he rotary knob
10
or by one of
the four context sensitive keys
5
. For more details, refer
to paragraph 3.6 SETTING PARAMETERS.
The deviation range may be set from:
❙0 to 3.14 rad (<16 MHz)
❙0 to 10 rad (16 – 1200 MHz)
❙Setting with a step of 0.01 rad.
The return to the previous menu is possible by pressing
the PREV. key
3
and the return to the main display by
pressing the ESC key
13
.
Example 10:
For PM sine (deviation: 1 rad), the display shows:
Example 11:
For PM square, the display shows:
CH1: modulation signal
CH2: modulated signal (deviation: 1 rad)