Agilent Technologies HP8648A Weather Radio User Manual


 
AM Receivers
145
17. Decrease the receiver’s volume control until the AC Level meter reads
13 dB.
18. Select AC Level
19. Press the REF SET key.
20. Change SINAD meter to read Distortion.
21. Tune Amplitude over the range of 500 mV to 5 V.
Distortion (for given input) is displayed as shown (should not exceed
±10%).
Relative output level (for given input) is displayed as AC Level (should
not exceed ±10 dB).
:Distortion
Input
To Screen
RX TEST
AC Level
Filter 1
50Hz HPF
Filter 2
15kHz HPF
Atten Hold
On/Off
Ext Load R
8.00
RF GEN
RF ANL
AF ANL
SCOPE
SPEC ANL
ENCODER
DECODER
RADIO INT
More
dB
dB
-3.88
SINAD
RF Gen Freq
28.310000
MHz
Amplitude
5.00
uV
Output Port
RF Out/Dupl
AFGen1 Freq
1.0000
kHz
AFGen2 Freq
1.0000
kHz
AFGen2 To
Off
FM
0 25.16 24
Ref
AFGen1 To
30.0
%
AM
:Output