GatesAir Inc. CZF 사용자 설명서
APEX
™
Exciter Incorporating FLO
™
Technology
Navigating the LCD Display Screens
Details of the System Setup Screens
Page: 3-42
888-2604-001
03/08/07
WARNING: Disconnect primary power prior to servicing.
J: The sample of the non linear precorrector output.
FLO w/RTAC: Digital signal taken at output of adaptive precorrector board.
BIT: Sample of the Built In Test FIFO (for future use).
Exciter: RF signal is taken from J4 sample output of exciter PA and connected to
J4 sample input on down converter board.
J4 sample input on down converter board.
• LCD Contrast: A 100% setting gives a bright but washed out screen that is still read-
able. A 0% setting gives a dark screen of relatively low contrast that is still readable.
Enter the desired percent on the LCD display numeric key pad.
Enter the desired percent on the LCD display numeric key pad.
3.6.5
External I/O Setup Screen
Some functions of the APEX digital exciter must be capable of being controlled (operated)
via a parallel remote control system while other functions must be controllable from the
transmitter logic. The External I/O board is the interface between the APEX exciter and the
transmitter control logic.
via a parallel remote control system while other functions must be controllable from the
transmitter logic. The External I/O board is the interface between the APEX exciter and the
transmitter control logic.
The External I/O screen has three programable areas, which are as follows.
• The “Channel Pin I/O Function” represents the parallel interface connections between
the exciter and the transmitter control logic. They are discussed in Section 3.6.5.3,
External I/O Interface to Transmitter Control Logic, on page 3-44
External I/O Interface to Transmitter Control Logic, on page 3-44
• The three VSWR foldback parameters are discussed in Section 3.6.5.1, VSWR Fold-
ExternalIOSetup.bmp
Figure 3-36 External I/O Setup Screen