Hardkey and Softkey Reference ESG Family Signal Generators
I/Q
4-48 User’s Guide
Int Burst
This softkey is automatically selected for the burst source when you
have enabled one of the digital modulation formats with burst on
(Option UN8 only). In this mode, the internal baseband generator
bursts the RF carrier. You can override this automatic selection by
selecting
Ext1 DC as the Burst Source. As long as burst is turned on in an
enabled digital modulation format, you can toggle between the internal
and external burst sources.
Softkey Location:
I/Q > Burst Source > Int Burst
Int I/Q
This softkey is automatically selected for the I/Q source when you have
enabled a digital modulation format (Option UN8 only). In this mode,
the signal generator is automatically set to internally generate I and Q
signals. You can override this selection by setting the
I/Q Source to
Ext1 I/Q. As long as digital modulation is enabled, you can toggle
between the internal and external I/Q sources.
Softkey Location:
I/Q > I/Q Source > Int I/Q
Power Search Manual Auto
This softkey toggles between the auto and manual modes of power
search mode. Power search is an internal calibration routine used to
achieve calibrated output power when the ALC is off. When you set
Power Search Manual Auto to Auto, power search will execute automatically
with each change to the RF frequency or power, and also with each
change to the AM, burst, pulse, or I/Q modulation state. If you are using
external I/Q modulation, the power search routine assumes that the I/Q
input level is = 0.5 V
rms
. Actual output amplitude will scale
directly with .
When you set
Power Search Manual Auto to Manual, the power search
routine is not run until the
Do Power Search softkey is pressed.
The
ALC Off On softkey must be set to Off in order to engage either power
search mode.
Default Value: Manual
Softkey Location:
I/Q > ALC Off On > Power Search Manual Auto
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