Specifications

6-18 888-2500-001 5/2/2013
WARNING: Disconnect primary power prior to servicing.
DAX-1/DAX-3
Section 6 Troubleshooting
(K) Training: 1 2 3 4 5: Pressing ‘K’ initiates the automated off-line training sequence
for NL (AM to AM) & PM (AM to PM) correction.
NOTE:
Prior to training, the user should have stored the range setpoints for all 5 power
levels and terminated the transmitter into a dummy load. The training sequence
requires approximately 2-3 minutes to complete.
The training sequence will switch to internal waveform generation mode where a series
of different waveforms are modulated, and the output of the transmitter at each power
level is evaluated to determine timing delays as well as AM/AM and AM/PM
characteristics. For each power level a pass (P) or fail (F) indication will be temporarily
displayed. Should a power level fall below the minimum required for reliable
adaptation, a B is displayed indicating the particular power level has been bypassed.
PM Delay: xx and PDM Delay: xx: This is the correlation delay result for factory
troubleshooting use only
(L) Security Key Warning: The Security Key for DAX series transmitters is installed
onto the PA Motherboard and allows advanced correction, digital mode, and distortion
reduction technique options to be activated. When a Security Key option is installed,
the factory setup procedure enables the Security Key Warning (ON). In the event of a
Security Key hardware failure the transmitter will display a Security Key ’NA’ on
VT100 page 1 (see "6.2.2.1 VT100 - Page 1" on page 6-5), but allows the advanced
features to remain enabled for a 7 day grace period. Upon expiration of the 7 days, all
options are disabled until a valid response from the Security Key is received.
If this is toggled OFF and the Security Key fails there will simply be no GUI
notification as the 7 days pass and the options become disabled.
6.2.2.5.2 METER CALIBRATION
(1) AC Volt. Cal: Pressing ‘1’ allows the user to enter the Secondary AC voltage (via
the numeric keypad) calibration as measured on the HVPS transformer secondary.
(2) B+ Calibration: Pressing ‘2’ allows the user to enter the HVPS B+ voltage
calibration.
NOTE:
(Q) Disable B+ Voltage Faults, below, allows the B+ fault to be temporarily
masked in the event an incorrect calibration is entered and the transmitter will not
remain in the ON state.
(3) Forward Power Cal.: Pressing ‘3’ allows the user to calibrate the forward power
displayed on both the transmitter user interface and the VT100.