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Power Output Adjustment
Note:
The power output adjustment is not used on the 91341, 91343, or
91347.
1
Set the spectrum analyzer as follows:
2
Connect the spectrum analyzer to TP2 and the adjacent GND test
point.
3
Adjust C10, C2, C3, C6, and C7 until the signal level is maximized.
4
Repeat the adjustments in the same order until no further
increase of signal level is obtained.
5
Verify that the signal level is higher than -45 dBm for the
transmitters.
Assigned Frequency Alignment
Note:
The assigned frequency adjustment is not used on the 91341,
91343, or 91347.
1
Set the spectrum analyzer as follows:
2
Adjust C10 so the two side band peaks are symmetrical around
the center frequency.
CF
611 MHz for UHF; 203 MHz for VHF
Span/Div
MHz
Sweep
ms/div
Ref Level
0 dBm
Video Filter
OFF
RBW
Auto
RF Attn
Auto
CF
set to assigned frequency
Span/Div
2 kHz/div
Sweep
Auto
Ref Level
0 dBm
Video Filter
OFF
RBW
3 kHz
RF Attn
Auto