MFJ-869 MFJ Giant automatic SWR/Wattmeter
Instruction Manual
©
2009-2010 MFJ Enterprises, Inc.
4
Press both [MODE] and [PEAK] buttons simultaneously to show the current power meter range
setting, and then hold or press again within half a second to cycle the meter range setting. Default is
Auto Ranging.
Meter Range
LEDs
Number of Beeps
Low 20
1
Mid 200
2
High 2K
3
Auto
20 + 200 + 2K
4
•
Wattmeter Zero Scale Adjustment:
A trimmer located below the wattmeter to calibrate the zero
scale of the meter needle. There is a trimpot inside the unit for full-scale adjustment. See “Wattmeter
Calibration” section for the calibration procedure.
•
SWR LED:
Illuminates when the SWR mode is selected.
•
FWD LED:
Illuminates when the forward power mode is selected.
•
REF LED:
Illuminates when the reflected power mode is selected.
•
20 LED:
Illuminates when the power scale is 0 to 20 watts (red for forward power or green for
reflected power).
•
200 LED:
Illuminates when the power scale is 0 to 200 watts (red for forward power or green for
reflected power).
•
2K LED:
Illuminates when the power scale is 0 to 2000 watts (red for forward power or green for
reflected power).
•
PEAK LED:
Illuminates when the peak power mode is selected.
•
MODE Button:
Used to cycle through the SWR, forward power, and reflected power mode. The
selected mode is indicated by the SWR, FWD, and REF LEDs.
•
PEAK Button:
Used to select peak or average power mode. Peak envelope power (PEP) is
measured by selecting a peak mode with selectable peak hold time. Press [PEAK] button to show the
current power mode setting (only the PEAK LED illuminates when a peak mode is selected), and then
hold or press again within half a second to cycle the power mode setting. Default is Average mode.
Mode
2000 Meter Mark
Number of Beeps
Peak 1 sec.
100
1
Peak 2 sec.
200
2
Peak 3 sec.
300
3
Average 2000
4
•
ALRM LED:
Illuminates when the SWR is greater than the selectable alarm SWR.
