To Set The Ils Localizer Ddm Value In Micro-Amps (Μa); To Set The Ils Localizer Ddm Value As A Percentage (%); To Set The Ils Localizer Sdm Value - Keysight Technologies N5166B CXG User Manual

To set the ILS Localizer DDM value in micro-amps (μA)
This process sets a value for the difference in depth of modulation (DDM)
in μA.
1. Press Aux Fctn > Avionics > ILS Localizer.
2. Press DDM/SDM.
3. Press DDM uA
4. Enter a value that is within the range of the current SDM value.
Typically the SDM default value provides sufficient range for most applications.
If SDM is set to 99%, then the full range (–958.1 to 958.1 μA) of DDM uA is available. The
following demonstrates the limits of DDM uA's range:
((–SDM/100)*(150/.155)) to ((SDM/100)*(150/.155))
As SDM's value increases or decrease, so does the range.
The DDM uA default value is 0.0 uA.

To set the ILS Localizer DDM value as a percentage (%)

This process sets a value for the difference in depth of modulation (DDM)
in %. DDM can be expressed either in terms of percentage (%) or as a modulation index. A DDM of
1% is equivalent to 0.01 DDM.
1. Press Aux Fctn > Avionics > ILS Localizer
2. Press DDM/SDM
3. Press DDM%
(Default value is 0.00%.)
4. Enter a value within the range of the current SDM value.
Typically the SDM default value provides sufficient range (–40% to 40%) for most applications.
If SDM is set to 99%, then the full range (-99% to 99%) of DDM is available. The following
demonstrates the limits of DDM's range:
(-SDM) to (SDM)
As SDM's value increases or decrease, so does DDM's range.

To set the ILS Localizer SDM value

This process sets the sum of depth of modulation (SDM):
1. Press Aux Fctn > Avionics > ILS Localizer
2. Press DDM/SDM
3. Press SDM
Keysight CXG, EXG, and MXG X-Series Signal Generators User's Guide
Avionics VOR/ILS (Option N5180302B)
Using ILS Localizer Softkeys
157