Aeroflex ATB-7300, Руководство по эксплуатации, Страница: 30 / 92

Test Set Operation
Subject to Export Control, see Cover Page for details.
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2.3.4.B Generator Control Window
Previously described in“Generator Control Window” on page 2-9.
2.3.4.C Settings Window
Ph ase Sh ift data field : (0.0 to 360.00 Degrees)
Displays or sets the setting of the 90 & 150 Hz Phase relation.
Total MOD data field: (0 to 99%)
Displays or sets the setting of the Total MODulation of the instrument including all
tones currently being output. Changing th is value will cause ALL active tone
modulations to be changed proportionally to their values so that the sum equals the
Total MOD value.
2.3.4.D DDM Settings Window
DDM data field: (LOC 0.000 to 0.4000, GS 0.000 to 0.800)
Displays or sets the setting of the Differ ence in Depth of Modulation value. Changing
this value causes proportional changes of the Tone Settings MODulation values with
respect to the DDM direction.
DDM 90 Right (Down) and 150 L eft (Up ) b uttons:
Indicates or sets the LOC (GS) directi on that has the dominate modulation level.
DDM slide bar:
Enables the user quickly set a DDM value and dominate modulation direction by sliding
the control left or right.
DDM Preset b uttons:
Enable the user to quickly select commonly used DDM settings with regards to the DDM
direction.
2.3.4.E Tone Settings Button
Pops up a Tone Settings GUI for control of the 90 and 150Hz tones.
Fig. 2-18 ILS Tone Settings GUI
90 Hz wind ow:
Frequency data field: (72Hz to 108Hz)
Displays or sets the setting of the 90 Hz tone Frequency.
MO Du lati on data field: (0 to 99%)
Displays or sets the setting of the 90 Hz tone percent Modulation level. Total
modulation not to exceed 99%