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.Pr ess the REF SET key.
On the Radio set th e 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
-47.0dBm
Output Port
RF Out/Dupl
AFGen1 Freq
1.0000kHz
AFGen1 To
Off
FM
AFGen2 Freq
1.0000kHz
AFGen2 To
Off
FM
Avg
Distortion 1.08224 Ref