Keysight Technologies N5171B EXG, Руководство пользователя

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116 Keysight EXG and MXG X-Series Signal Generators User’s Guide
Avionics VOR/ILS (Option 302)
Using VOR [VHF Omnidirectional Range] Softkeys
To set the VOR mode that produces a full or partial VOR signal
1. Press Aux Fctn > Avionics > VOR
2. Press VOR Mode
(Default selection is OFF.)
3. Select either: OFF | NORM | VAR | Sub-carrier | Sub-FM
— Selecting OFF turns off all VOR modulation. When set to OFF, all VOR mode
parameter settings are turned off, but the selected VOR carrier is still
present on the RF Output connector. To turn off this VOR carrier, set
RF Off/On to Off.
— Selecting NORM turns on all VOR signals so that a standard VOR signal is
generated with a default VOR Bearing of zero degrees.
— Selecting VAR turns on the main VOR carrier and the 30 Hz variable phase
signal (VAR Freq); suppressed the Sub-carrier.
— Selecting Sub-carrier turns on the Sub-carrier without the 30 Hz reference
signal (REF Freq); suppresses the main VOR carrier.
— Selecting Sub-FM turns on the Sub-carrier and the 30 Hz reference
signal (REF Freq); suppresses the main VOR carrier.
To set the VOR carrier frequency
1. Press Aux Fctn > Avionics > VOR
2. Press Carrier Freq Index
(Default value is 1 and corresponds to 108.00 MHz.)
3. Select a value from 1 to 160 and press Enter.
The index value that is entered sets the VOR carrier frequency to one of the
standard defined corresponding values and produces a VOR carrier.
VOR carrier frequencies range from 108.00 to 117.95 MHz and can be set by
selecting index values from 1 to 160.
ILS Localizer frequencies range from 108.10 to 111.95 MHz, which overlaps the
VOR carrier frequency range, and can be set by selecting index values from 1
to 40. (For information, see: “To set the ILS Localizer carrier frequency” on
page 132 .)
Because VOR carrier frequencies and ILS Localizer carrier frequencies have a
frequency range that overlaps, only frequencies where the 100 kHz digit is even
(tenths of a megacycle count is even) are used as VOR carrier frequencies.
The default VOR carrier frequency Index is 1 and corresponds to 108.00 MHz.
VOR Carrier Frequencies (MHz) Carrier Freq Index = 1 to 160
1 to 32 33 to 64 65 to 96 97 to 128 129 to 160