AM Receivers
157
On the Test Set using the knob and data entry keys:
14.Decrease Amplitude until the SINAD meter reads 10 dB.
❒If desired, use the meter averaging function for the SINAD indicator.
a. Select dB on the SINAD meter.
b. Press the AVG key.
❒If desired, select the n umber of readings to ave rage.
• Enter the number of readings to average.
Higher number of readings averaged will require longer to
reach the final indication.
15.Set Amplitude units to dBm.
16.Increase Amplitude (more positive) by 3 dB.
• Record Amplitude setting for later use.
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
W
dB 0.4106
SINAD
RF Gen Freq
145.280000
MHz
Amplitude
0199 uV
Output Port
RF Out/Dupl
AFGen1 Freq
1.0000kHz
AFGen1 To
3.00kHz
FM AFGen2 To
10.00 mV
Audio Out
09.51
Avg 24
AFGen2 Freq
400.0kHz