Phase Modulation (Pm); Fsk Modulation; Psk Modulation - Hameg HM8135X Manual

Phase modulation (PM)

After selecting DEV (PM MEMU) using the context sensitive keys
, the display shows:
A new value of this deviation can be entered from the data
keypad or modifi ed by the digital rotary
four context sensitive keys
paragraph "Setting parameters".
The deviation range may be set from:
– 0 to 3.14 rad (<16 MHz)
– 0 to 10 rad (16 – 3000 MHz)
– Setting with a step of 0.01 rad.
The return to the previous menu is possible by pressing the
PREV. key and the return to the main display by pressing
the ESC key .
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)
or one of the
. For more details, refer to the
T y p e s o f M o d u l a t i o n

FSK modulation

After selecting F0 or F1 (FSK MENU) with the context sensitive
key , the display shows:
Fsk0: 512.000000 MHz
– stp +
Fsk1: 522.000000 MHz
– stp +
A new value of Fsk0 or Fsk1 can be entered from the data
keypad or modifi ed by the digital rotary
four context sensitive keys
paragraph "Setting parameters".
The skip frequency Fsk0 Fsk1 or Fsk1
from:
– 0 to 10 MHz (16 MHz - 3000 MHz)
– step 1 Hz
The return to the previous menu is possible by pressing the
PREV. key and the return to the main display by pressing
the ESC key .
Example 12: For modulation FSK, the display shows:
1190.000000 MHz
1200.000000 MHz
Fsk0: 1190.000000 MHz
Fsk1: 1200.000000 MHz

PSK Modulation

After selecting PH0 or PH1 (PSK MENU) with the context sen-
sitive key , the display shows:
Psk0:
– stp +
Psk1:
– stp +
A new value of Psk0 or Psk1 can be entered from the data
keypad or modifi ed by the digital rotary
four context sensitive keys
paragraph "Setting parameters".
The skip phase Psk0 Psk1 or Psk1
from:
– -3.14 rad to 3.14rad (<16 MHz)
– -10 rad to 10 rad (16 – 3000 MHz)
– step 0.01 rad
The return to the previous menu is possible by pressing the
PREV. key and the return to the main display by pressing
the ESC key .
Example 13: For modulation PSK, the display shows:
1200.000000 MHz
+13.0dBm
cur
cur
or one of the
. For more details, refer to the
Fsk0 may be set
FSK
Ext
–10.00rad
cur
10.00rad
cur
or by one of the
. For more details, refer to the
Psk0 may be set
PSK
Ext
Subject to change without notice
33