Yaesu FTM-350AE, Technical Supplement

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10
FTM-350AR/E Technical Supplement
Alignment Preparation & Precautions
A 50-Ohm RF load and in-line wattmeter must be
connected to the antenna jack in all procedures that
call for transmission; alignment is not possible with
an antenna. After completing one step, read the next
step to see if the same test equipment is required. If
not, remove the test equipment (except dummy load
and wattmeter, if connected) before proceeding.
Correct alignment requires that the ambient tem-
perature be the same as that of the transceiver and
test equipment, and that this temperature be held
constant between 68 °F ~ 86 °F (20 °C ~ 30 °C). When
the transceiver is brought into the shop from hot or
cold air, it should be allowed some time to come to
room temperature before alignment. Whenever pos-
sible, alignments should be made with oscillator
shields and circuit boards firmly affixed in place.
Also, the test equipment must be thoroughly
warmed up before beginning.
Note : Signal levels in dB referred to in the alignment
procedure are based on 0dB μ = 0.5 μ V.
Test Setup
Set up the test equipment as shown below for trans-
ceiver alignment. Maintain the supply voltage at
13.8V DC for all steps.
Alignment
2. Press the keys on the front panel in the following se-
quence.
[

]
  
[

]
  
[

]
  
[

]
  
[

]
  
[

]
Entering the Alignment Mode
Alignment of the FTM-350AR/E is performed using
a front panel software-based procedure. To perform
alignment of the transceiver, it must first be placed
in the “Alignment Mode,” in which the adjustments
will be made and then stored into memory.
To enter the Alignment mode:
1. Turn the radio on while pressing and holding the two
keys which are located on both sides of the [ POWER ]
switch.
3. The transceiver is now in the “Alignment Mode.”
[

] [

]
50-ohm
Dummy Load
Freq. Counter
Deviation
Meter
AC Voltmeter
AF Generator
AC Voltmeter
Inline
Wattmeter
Sampling
Coupler
Regulated
13.8V PSU
MIC Jack