Hardkey and Softkey Reference ESG Family Signal Generators
I/Q
4-44 User’s Guide
Calibration Type User Full
Toggles between an I/Q calibration executed over the full frequency
range of the signal generator (
Full) or an I/Q calibration over a frequency
range which you specify (
User) using the Start Frequency and
Stop Frequency softkeys. Once you have chosen either Full or User, and
specified the frequency range, press
Execute Cal to start the I/Q
calibration.
The I/Q calibration type is a persistent state; it is not affected by an
instrument preset or by a power cycle.
Softkey Location:
I/Q > I/Q Calibration > Calibration Type User Full
Do Power Search
Press this softkey to execute the power search routine one time. Power
search is an internal calibration routine used to achieve calibrated
output power when the ALC is off. You can execute a power search at
any time by pressing this softkey. 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
.
The
ALC Off On softkey must be set to Off in order to execute the power
search routine.
Softkey Location:
I/Q > ALC Off On > Do Power Search
Execute Cal
Press this softkey to begin the I/Q calibration for the frequency range
that you have specified. The calibration can be aborted at any time
during the procedure by pressing the
Abort Cal softkey. If you do abort
the calibration, the previous calibration is restored.
Softkey Location:
I/Q > I/Q Calibration > Execute Cal
Ext1 DC
Press this softkey to change the burst source for modulation to a
DC-coupled, analog input using the EXT 1 INPUT connector. Using this
selection, the bursted output signal will have the same shape as the
analog input. If you do not have Option UN8, this is the only burst
source and it cannot be changed. If you have Option UN8, the burst
source can also be set to an internal source (refer to the
Int Burst softkey).
Softkey Location:
I/Q > Burst Source > Ext1 DC
I
2
Q
2
+
I
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Q
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