MFJ-993 IntelliTuner Automatic Antenna Tuner Instruction Manual
© 2003-2004 MFJ Enterprises, Inc.
21
Appendices
POWER-ON OPERATIONS
(Press and hold buttons while turning on the power.)
Press and hold + + to calibrate the SWR bridge.
L-UPTUNE
Press and hold + to start the self test.
Press and hold + + to reset factory defaults.
TUNE L-DN
Press and hold + + to calibrate the wattmeter.
TUNE C-UP
Press and hold + + + to delete the selected antenna memory.
TUNE ANTC-DN
Press and hold + + + to perform total reset.
TUNE C-DN L-DN
C-UP
Press and hold + to get the firmware version number.
C-DN
Press and hold + to test the relays.
L-DN
L-UP
Press and hold + + to calibrate the frequency counter.
L-DN
Press and hold + to test the power-down circuitry.
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
Press and hold + + to output audio for volume adjustment.
POWER
L-UPC-UP
L-UP
Figure 11. Power-On Operations.
Important: The radio interface cable must be disconnected from the tuner, if the radio power is
off, before performing any of the following power-on operations.
Resetting the Tuner
Each time the tuner is powered off, the microprocessor saves all memories and configurations to non-
volatile memory ready to be used the next time the unit is turned on again. If the tuner is not working
properly, even on initial power on, try resetting to the factory defaults.
Factory Defaults
The unit is shipped with the following default settings:
• Main Menu Digital Wattmeter
• Setup Menu Target SWR
• Inductance 0 µH
• Capacitance 0 pF on transmitter side
• Target SWR 1.5
• Auto Tune SWR 1.0 above target SWR
• Meter Range 300 watts (high range)
• Memory on
• IntelliTune
TM
on
• SWR Beep off
• Beep on
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