Using An External Modulation Source; Removing A Dc Offset; Using Wideband Am - Agilent Technologies X Series User Manual

Using an External Modulation Source

Currently selected
Rear panel inputs are
described on page 13
AM, FM or ΦM inputs

Removing a DC Offset

To eliminate an offset in an externally applied FM or ΦM signal, perform a DCFM or DCΦM
Calibration.
NOTE You can perform this calibration for internally generated signals, but DC offset is not usually
a characteristic of an internally generated signal.
1. Set up and turn on the desired modulation.
2. Press FM/ΦM > FM Source > Ext1 or Ext2 > More > Setup FM Source > Ext DC Cal.
Performing the calibration with a DC signal applied removes any deviation caused by the DC signal,
and the applied DC level becomes the new zero reference point. When you disconnect the DC signal,
perform the calibration again to reset the carrier to the correct zero reference.

Using Wideband AM

Wideband AM uses the I input of the I/Q modulation system. When the wideband AM is turned on,
the I/Q is turned on and the I/Q source is set to external. If the I/Q is turned off or the I/Q source
is set to internal, then the wideband AM turns off.
Agilent X-Series Signal Generators User's Guide
Default
Using Analog Modulation (Option UNT)

Using an External Modulation Source

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