MFJ-991 / MFJ-994 IntelliTuner Automatic Antenna Tuners
Instruction Manual
©
2004 MFJ Enterprises, Inc.
15
Appendices
Press and hold + + to calibrate the SWR bridge.
L-UP
TUNE
Press and hold + to start the self test.
TUNE
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 antenna memory.
TUNE
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.
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-ON OPERATIONS
(Press and hold buttons while turning on the power.)
POWER
L-UP
C-UP
Figure 8. Power-On Operations.
Firmware Version Number
Make sure the meter is calibrated. To obtain the firmware version number, press and hold the [C-UP]
button while turning the power on. The version number X.XY is represented by the meter forward needle
for X.X and the reflected needle for Y. For example, forward needle on 10 watts mark and reflected
needle on 2 watts mark represent firmware version number 1.02. Release button to resume normal
operation.
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:
•
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) (600 watts in model MFJ-994)
Summary of Contents for IntelliTuner -991
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