Giga-tronics 2500B Series Microwave Signal Generators
Modulation Operation
Operation Manual, Part Number 34737, Rev C, June 30, 2011
Page 41
Generate an Internally Modulated AM Signal
Step
Action
8.
In the AM — Internal Waveform submenu, set the following parameters:
1.
Turn on AM modulation; press
AM.
2.
Set the depth of AM modulation; press
Depth.
a.
Use the numeric keypad,
keys, or
to change the depth of AM modulation to 20
%.
3.
Set the rate of AM modulation; press
Rate.
a.
Use the numeric keypad,
keys, or
to change the rate of AM modulation to 50
kHz.
4.
Set the type of waveform used for AM modulation as a sine wave; press
Waveform
until Sine selected.
9.
Press the
button to energize the RF output of the 2500B.
End of Procedure
5.3
Generate an Externally Modulated AM Signal
The procedure below describes how to generate an AM signal using an external modulation source. The AM signal is set
up to have the following characteristics:
Carrier frequency = 1.00 GHz
Carrier power = 1.00 dBm
Depth of AM modulation = 50 %/V
Rate of AM modulation = 50 kHz
Modulating waveform = sine wave
NOTE:
The example procedure in this section uses specific parameters to illustrate how to setup the 2500B. You can use
this procedure for real-life situations by simply changing the parameters to fit your needs.
Equipment and Materials
External AM modulation source (see specifications in Table 51 on page 95)
Cables and connectors for connecting the AM modulation source to the 2500B
Cables and connectors for connecting device to be tested to the 2500B RF Output
RF ON
Soft Button
Soft Button
Soft Button
Soft Button
