Hardkey and Softkey Reference ESG Family Signal Generators
FM
4-24 User’s Guide
Ext 2 AC-Coupled
This softkey lets you input an external, AC-coupled, frequency
modulation signal to the EXT 2 INPUT connector. The modulation
signal is tested for voltage and a display annunciator will report a high
or low condition if the voltage is >
±
3% of 1 Vpk.
The external 2 input has multiple uses but can be used for only one
modulation at a time. If, for example, you were using the external 2
input in an amplitude modulation configuration for
AM Path 1, and then
you configured
FM Path 2 to also use the external 2 input, the signal
generator would turn off
AM Path 1 and assign the external 2 input to
your
FM Path 2 configuration. For the purposes of this discussion, the
external 2 AC-coupled input is the same as the external 2 DC-coupled
source.
Softkey Location:
FM/ΦM > FM Source > Ext 2 AC-Coupled
Ext 2 DC-Coupled
This softkey lets you input an external, DC-coupled, frequency
modulation signal to the EXT 2 INPUT connector.
The external 2 input has multiple uses but can be used for only one
modulation at a time. If, for example, you were using the external 2
input in an amplitude modulation configuration for
AM Path 1, and then
you configured
FM Path 2 to also use the external 2 input, the signal
generator would turn off
AM Path 1 and assign the external 2 input to
your
FM Path 2 configuration. For the purposes of this discussion, the
external 2 AC-coupled input is the same as the external 2C-coupled
source.
Softkey Location:
FM/ΦM > FM Source > Ext 2 DC-Coupled
FM ΦM
This softkey toggles between the menus for FM, normal
Φ
M, and
wideband ΦM. Refer to the “Phase Modulation” section for a discussion
of the differences between normal ΦM, and wideband ΦM.
Default Value: FM
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey
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