MFJ-269C Instruction Manual LF/HF/VHF/UHF SWR Analyzer
7
“Power Saving” mode has been is successfully disabled, the message shown below will appear as soon as
Mode
is released.
Sleep Mode
is a default function and will reset automatically each time the analyzer is turned OFF. To
restore
Sleep
, simply turn the analyzer
Off
and then
On
again.
3.0
MAIN MENU AND DISPLAY
WARNING: NEVER APPLY RF OR ANY OTHER EXTERNAL VOLTAGE TO THE ANTENNA PORT.
THE MFJ-269C USES ZERO BIAS DETECTOR DIODES THAT MAY BE DAMAGED BY
EXTERNAL VOLTAGES. ALSO, READ SECTION 2.0 BEFORE APPLYING POWER.
INCORRECT SUPPLY VOLTAGE OR REVERSED POLARITY CAN CAUSE DAMAGE.
3.1 General
Connections
The N-female
Antenna
connector on top of the unit is the
primary RF-measurement connection
. It is
used for all functions
except
frequency counter measurements.
The
Power
connector (2.1 mm) is described in section 2.0. Please read the power-source section carefully
before attempting to operate the analyzer! Improper voltage application, the wrong battery charger
setting, or reversed polarity could permanently damage your unit.
The BNC
Frequency Counter Input
is for frequency counter measurements only. See section 4.5 for the
counter's operating instructions.
3.2 Power-up
Display
Important Note:
Before powering up the analyzer, check the status of the
UHF
switch located above the
LCD window on the left. This switch must be in the "up" or in the
Off
position unless
UHF
operation is
intended.
Note:
The following is a description of the basic opening (or default) menu used by the MFJ-269C. Your
analyzer also has an
advanced user
section (5.0).
When applying
Power
, a sequence of message screens appear on the LCD display. The first screen lists
the software version (
Ver)
: Be sure to have this number handy when referring technical questions about
your analyzer to MFJ Customer Service:
The second message shows the software copyright date:
MFJ-269C
Ver 14.14