Specifications

APEX™ Exciter Incorporating FLO™ Technology
Navigating the LCD Display Screens Details of the Exciter Status Screens
Page: 3-28 888-2604-001 03/08/07
WARNING: Disconnect primary power prior to servicing.
• Exc Active: (Off or On) When on, this exciter is on the air.
• RF Present: (Off or On) This is an indication that the RF level at the output of the ex-
citer is above a given threshold level. The RF presence threshold is an RF output level
of approximately 5 mW.
• Board Type: (UHF or VHF) Interface configured to fit existing UHF and VHF exciter
interface connections.
• Board Rev: This is the board revision for the External I/O board.
• CPLD Rev: This is the software revision level of the CPLD in the External I/O board.
• EEPROM: (Ok or FAULT) The EEPROM is the local board memory. It stores board
specific information such as board type, board revision, CPLD revision, and other lo-
cal data.
Note
Within any of these screens, touching Home returns to the main
screen, and touching Fault brings up the Exciter Status screen.
3.4.6.2.1 External I/O Diagnostics
ExternalIODiagnostics.bmp
Figure 3-26 External I/O Diagnostics
The External I/O Diagnostics screen is shown in Figure 3-26.
Analog loopback: Choices are Enabled or Disabled. Disabled is the normal setting.
• This function loops an analog output back through an analog input channel for diag-
nostics purposes.
The last two screen entries are Analog Output A and Analog Output B. These two entries
provide a voltage for the analog loopback test mentioned above.
• Analog Output A is looped back through analog Analog 1 and 3 inputs and Analog
Output B is looped back through Analog 2 and 4 inputs, see external I/O Board screen
Figure 3-25 for the analog inputs.