Aeroflex ATB-7300, Руководство по эксплуатации, Страница: 33 / 92

Test Set Operation
Subject to Export Control, see Cover Page for details.
2 - 16
2.3.6 MKR Gen GUI
Marker beacons operate at a carrier frequenc y of 75 MHz with AM modulated Morse
code like tones. Outer markers operate with 400 Hz tone dashes, Middle markers
operate with alternating 1.3 kHz dots and dashes, and Inner markers operate with 3 kHz
tone dots. The MKR Gen GUI provides for the setting of all these paramet ers.
Fig. 2-21 MKR generator GUI
2.3.6.A Generator Settings Window
Previously described in “Generator Settings Window” on page 2-9.
2.3.6.B Generator Control Window
Previously described in “Generator Cont rol Window” on page 2-9.
2.3.6.C Tone Settings Window
OUTER / MIDDLE / I NNER op tio ns:
When selected, sets the marker beacon type of operation. These options are mutually
exclusive.
Frequency data field: (10 to 18000 Hz )
Displays or sets the tone frequency for the selected marker option;
OUTER (400Hz)
MIDDLE (1300Hz)
INNER (3000Hz)
Mod ulat ion data fiel d: (0 to 99%)
Displays or sets the tone frequency modulat ion level for the selected maker beacon.