HP 8920A Application Handbook page 101

On the Radio set the Receiver's Controls as follows:
11 Set power to ON.
12 If required, set frequency to the same value as
13 If required, set CTCSS tone frequency to the same value as
14 Set RF Gain to maximum (if equipped).
15 Set squelch control to minimum (if equipped).
16 Set the volume control until the AC Level reads 100% of the Receiver's
specified audio output.
Refer to the audio output specifications for the receiver being tested.
17 Verify Receiver's squelch is closed.
On the Test Set using the knob and data entry keys:
18 Set Amplitude to -137 dBm.
19 Slowly increase the Amplitude until the squelch remains open and the SI-
NAD indicator shows 10 dB (minimum).
CTCSS Sensitivity is displayed as Amplitude as shown.
•
20 Set Amplitude to −47 dBm.
21 Slowly increase the AFGEN2 Freq in 0.1 Hz increments until the squelch
just closes.
•
22 Slowly decrease the AFGEN2 Freq in 0.1 Hz increments until the squelch
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Record this level.
SINAD
0 11.16
Avg
CTCSS
Squelch Sensi-
RF Gen Freq AFGen1 Freq
145.280000
tivity
MHz
Amplitude AFGen1 To
0.282 FM
uV
Atten Hold
On/Off
Output Port
RF Out/Dupl
Record the frequency.
FM Receivers
step 4
step 4
RX TEST
AC Level
dB
W
0.6321
24
To Screen
AFGen2 Freq Filter 1
1.0000 100.0 RF GEN
50Hz HPF
kHz Hz
RF ANL
AF ANL
AFGen2 To
Filter 2
FM 15kHz HPF SCOPE
3.00 5.00
SPEC ANL
kHz Hz
ENCODER
DECODER
Ext Load R
RADIO INT
8.00
Ω
More
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