MFJ MFJ-213 - External Power Supply; Operating Mode; Main Menu Screen

MFJ-213 HF/VHF/UHF Antenna Analyzer Instruction Manual
be charged above that point resetting the circuit before a Li-ion battery will
function in the MFJ-213.
2.2 External Power Supply
To operate the MFJ-213 on an external power supply plug in an external
power supply onto the EXT PWR jack on the top of the unit..
Powering the MFJ-213 externally requires a well-filtered 12V DC supply
such as the MFJ-1312D capable of delivering 12 to 15 VDC under varying
load conditions. Current drain ranges from 30 mA to 180 mA, depending on
operating mode, frequency range, and whether or not the display backlight is
on. The unit's external power jack is located on the front panel and accepts a
standard 2.1-mm power plug. Positive voltage (+) must be applied to the
connector's center pin.
Important Warnings: Reverse polarity or excessive voltage could
permanently damage the MFJ-213! To avoid damage:
1. Never connect an AC transformer or positive-ground power source
2. Never install or remove batteries with external power connected
3.0 OPERATING MODE
Once you have suitable power (battery or external), you're ready to explore
the analyzer's basic operating features. Begin by pressing the red PWR
button on.
BAND ESC MODE
PWR
ON
morF
3.1 Main Menu Screen
The individual functions are listed on the main screen and are selected by
rotating the TUNE/SELECT knob then pushing the TUNE/SELECT knob to
select the function. To exit from any of the functions press the ESC button to
return to the Main Menu Screen.
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Version 1 3 © 2012 MFI Enterprises, Inc