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SSB Receivers
177
On the Test Set using the knob and data entry keys:
18. Set AF Freq meter to measure Distortion.
19. Select AC Level.
20. Press the REF SET key.
On the Radio set the Receiver’s Controls as follows:
21. Decrease the Receiver’s volume control until the AC Level meter reads
−3 dB.
Distortion measurement results are displayed on the screen as shown.
To Screen
RX TEST
AC Level
Filter 1
50Hz HPF
Filter 2
15kHz HPF
Atten Hold
On/Off
Ext Load R
8.00
Ω
RF GEN
RF ANL
AF ANL
SCOPE
SPEC ANL
ENCODER
DECODER
RADIO INT
More
dB
%
-3.10
Distn
RF Gen Freq
28.310700
MHz
Amplitude
-47.0
dBm
Output Port
RF Out/Dupl
AFGen1 Freq
1.0000
kHz
AFGen1 To
Off
FM
AFGen2 Freq
1.0000
kHz
AFGen2 To
Off
FM
Avg
Distortion
1.08224
Ref