Specifications

5/2/2013 888-2500-001 6-13
WARNING: Disconnect primary power prior to servicing.
Section 6 Troubleshooting
DAX-1/DAX-3
(F) Mod. Mon. Level 1: Pressing ‘F’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 1. The UP/DOWN arrow keys are used raise/lower the output
signal.
(G) Mod. Mon. Level 2: Pressing ‘G’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 2. The UP/DOWN arrow keys are used raise/lower the output
signal.
(H) Mod. Mon. Level 3: Pressing ‘H’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 3. The UP/DOWN arrow keys are used raise/lower the output
signal.
(I) Mod. Mon. Level 4: Pressing ‘I’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 4. The UP/DOWN arrows are used raise/lower the output signal.
(J) Mod. Mon. Level 5: Pressing ‘J’ will allow the user to raise or lower the Mod
Monitor output signal on the External I/O board BNC connector when the transmitter is
ON in Power Level 5. The UP/DOWN arrow keys are used raise/lower the output
signal.
(K) LCD Contrast: Pressing ‘K’ will allow the user to change the contrast of the
transmitter LCD interface using the UP/DOWN arrow keys.
(L) ePDM Correction: Pressing ‘L’ allows the operator to invoke the optional adaptive
PDM filter correction when the Security Key is installed. When in ADAPT mode, the
Digital Signal Processor (DSP) on the Exciter/Controller monitors key parameters of
the transmitter output signal to optimize frequency and amplitude response in addition
to keeping a fixed-delay audio path thru the transmitter. Prior to taking any action on the
signal, however, the DSP ensures the following:
• AD( ): Signal has not saturated the feedback PDM Sample A/D converter
• RMS( ): Signal has adequate signal amplitude
• DELAY( ): Relative signal delay is within limits
• PSD( ): Signal has adequate frequency content
If any of the above conditions are not satisfied an X will be displayed in the associated
parenthesis and the equalization filter will remain unchanged. When all conditions are
satisfied the ePDM equalization filter is updated.
Selections for ePDM correction are ADAPT, HOLD, DEFAULT, and BYPASS.
ADAPT is the normal run mode of continuous correction