Analog Modulations
R&S
®
SMA100B
84User Manual 1178.3834.02 ─ 05
"Fixed Total"
Couples the deviation depth of both paths in per cent. If you change
the depth of any path, the R&S SMA100B automatically adjusts the
value of the other path. The sum always results in the set Total
Depth.
"Fixed Ratio"
Couples the deviation ratio of both paths. If you change the depth of
any path, the R&S SMA100B adjusts the value of the other path.
Remote command:
[:SOURce<hw>]:AM:DEViation:MODE on page 518
Total Depth ← AM settings
Sets the sum of the signal Depth for path 1 and path 2 in per cent when using com-
bined sources and Deviation Mode > Fixed Total.
Using external LF signals, the R&S SMA100B indicates the Sensitivity per Volts for the
input signal.
Provided both signal paths are turned on, the depth of both paths always sum up to the
value of the total depth.
Behavior when changing any depth settings:
●
Changing the total depth adjusts the depths of both paths proportionally.
●
Changing the depth of one path adjusts the depth of the other path. The sum
always results in the set total depth.
Remote command:
[:SOURce<hw>]:AM:DEPTh:SUM on page 517
Ratio Path2/Path1 ← AM settings
Sets the deviaton ratio of the signal depth for path 2 to path 1 in per cent when using
combined sources.
Using external LF signals, the R&S SMA100B indicates the Sensitivity per Volts for the
input signal.
In conjunction with the deviation mode, you can set the depth of both paths independ-
ently or coupled.
●
Deviation Mode > Uncoupled
Enables you to set the Depth or Sensitivity of both paths independently.
●
Deviation Mode > Fixed Ratio
Couples the ratio of the two paths as follows.
– Changing the ratio path2/path1 adjusts the depth of both path2. The depth of
path1 remains the same
– Changing the depth of one path adjusts the depth of the other accordingly. The
ratio path2/path1 remains the same.
Remote command:
[:SOURce<hw>]:AM:RATio on page 518
4.4.3 Pulse Generator
Option: see Chapter 4.1, "Required Options", on page 73.
Modulation Settings
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