Rohde & Schwarz AM 300, Руководство по эксплуатации

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Arbitrary and Function Generator R&S AM300
E-1007.9922.12 6-112 Operating manual, 02/2005
6.2.1.5 Modulating a Waveform
What the settings
are for You can use the MOD submenu to enter all the settings for modulating a
waveform. The available modulation source is an internal generator which
can deliver different standard waveforms.
The available modulation modes are AM, FM, PM, FSK and PSK. The
parameters for modulation modes AM, PM and PSK can be separately set for
each channel. In contrast, modulation modes FM and FSK affect both
channels and cannot be set separately for each channel.
Note: If you wish to review all the modulation settings in channel CH1 (CH2)
at a glance, you can arrange for the parameters to be clearly displayed
complete with their currently applicable settings ( 6-196, 6-197).
WAVEFORM
Sine Triangle Ramp Square Exponential Noise Square Low Jitter Puls
e
Arbitrary Normal Arbitrary
Sample Ac
cu
rate
CARRIER ■ ■ ■ ■ ■ ■ ■
AM
MOD ■ ■ ■ ■ ■ ■
CARRIER ■ ■ ■ ■ ■ ■
FM
MOD ■ ■ ■ ■ ■ ■
CARRIER ■ ■ ■ ■ ■ ■
PM
MOD ■ ■ ■ ■ ■ ■
FSK CARRIER ■ ■ ■ ■ ■
Signal and
waveform
combinations
SIGNAL
PSK CARRIER ■ ■ ■ ■ ■
where: CARRIER - Modulation carrier
MOD - Modulation signal
Modulation modes FSK and PSK do not require a modulation waveform to be
specified, since it is always a squarewave function. For such functions it is
enough to specify the modulation frequency and the modulation deviation.
Note
Modulations are only available when frequency coupling is switched on ( 6-
175).