MFJ-993B IntelliTuner Automatic Antenna Tuner
Instruction Manual
©
2003-2005 MFJ Enterprises, Inc.
23
Appendices
POWER-ON OPERATIONS
(Press and hold buttons while turning on the power.)
Press and hold + + to calibrate the SWR bridge.
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.
Press and hold + + + to delete the selected antenna memory.
TUNE
ANT
C-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
Press and hold + + to output audio for volume adjustment.
POWER
L-UP
C-UP
L-UP
C-UP
C-DN
C-DN
L-DN
POWER
Figure 13. 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 for both antennas:
•
Main Menu
Digital Wattmeter
•
Setup Menu
Target SWR
•
Inductance 0
μ
H
•
Capacitance
0 pF on transmitter side
•
Power Level
300 watts
†
•
Target SWR
1.5
†
•
Auto Tune SWR
1.0 above target SWR
†
•
Meter Range
300 watts (high range)
†
•
Peak Hold
on
†
•
Memory
Banks 1A and 2A on
†