Specifications

5/2/2013 888-2500-001 6-17
WARNING: Disconnect primary power prior to servicing.
Section 6 Troubleshooting
DAX-1/DAX-3
(B) DAX Model: Pressing ‘B’ will allow the user to change the model of the
transmitter using the UP/DOWN arrow keys. Selection of DAX-6, DAX-5, DAX-3,
DAX-1, and DAX-1R is available.
(C) # of Phases: Allows the user to specify the transmitter AC input phase as either
Single or Three. Changing the # of phases requires the user to recalibrate the Power
Supply Low Tap Calibration using (N) PSTAPLOW CAL on VT100 page 5 (described
below).
(D) FPGA PDM Filter Toggle: Pressing ‘D’ allows the user to enable (ON) or disable
(OFF) the ePDM Correction equalization filter. This setting, if OFF, overrides any
mode setting for ePDM Correction mode on (L) ePDM Correction on VT100 page 4
(see "6.2.2.4 VT100 - Page 4" on page 6-12). Normal operation is ON.
(E) FPGA AM2AM TOGGLE: Pressing ‘E’ allows the user to enable (ON) or disable
(OFF) the NL Correction (also referred to as AM2AM correction). This setting, if OFF,
overrides any mode setting for NL Correction mode on (M) NL Correction on VT100
page 4 (see "6.2.2.4 VT100 - Page 4" on page 6-12). Normal operation is ON.
(F) FPGA AM2PM TOGGLE: Pressing ‘F’ allows the user to enable (ON) or disable
(OFF) the PM Correction (also referred to as AM2PM correction). This setting, if OFF,
overrides any mode setting for PM Correction mode on (N) PM Correction on VT100
page 4 (see "6.2.2.4 VT100 - Page 4" on page 6-12). Normal operation is ON.
(G) FPGA BPLUS CORR TOGGLE: Pressing ‘G’ allows the user to enable (ON) or
disable (OFF) the HVPS Correction (also referred to as BPLUS Correction). HVPS
correction compensates for low frequency ripple and droop on the high voltage power
supply. Normal operation is ON.
(H) TAIL BITER: Pressing ‘H’ allows the user to enable (ON) or disable (OFF) the
optional distortion reduction technique (Tail Biter) utilized in the transmitter. With the
Security Key installed, normal operation is ON.
(I) Reflected Power Trip: Pressing ‘I’ allows the user to raise or lower the average
reflected power trip point calculated in the DSP. Factory setting is 70W per PA module.
Example: For a DAX-3 transmitter the user should enter 210W.
(J) Analog SF Adjust: Pressing ‘J’ allows the user to raise or lower the Analog Scale
Factor Adjustment. This adjustment compensates for modulation losses from low
power to high power operation. To perform adjustment set the transmitter to lowest
power setting and apply 90% modulation using external source or internal test tone
generator. Set modulation monitor to 100% level, and verify 90% modulation. Change
transmitter power setting to highest power setting, set modulation monitor level to
100%, and adjust Analog SF Adjust using the UP/DOWN arrow keys until 90%
modulation is achieved.