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185
21. Set Amplitude to −137 dBm and verify squelch closes.
If not, repeat step 19. & step 20.
22. Increase until the Receiver’s squelch just opens.
• Record this level.
23. Decrease Amplitude until the Receiver’s squelch just closes.
• Record this level.
Calculate the reading:
24. Minimum Squelch Hysteresis is the difference between the two readings.
On the Test Set using the knob and data entry keys:
25. Increase Amplitude until the Receiver’s squelch just opens.
• Record this level.
Maximum Squelch Sensitivity is displayed on the screen as
Amplitude as shown.
26. Decrease Amplitude until the Receiver’s squelch just closes.
• Record this level.
Calculate the reading:
27. Maximum Squelch Hysteresis is the difference between the two readings.
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
kHz
0.1769
AF Freq
RF Gen Freq
28.310700
MHz
Amplitude
-109.0
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
Squelch Sensi-
tivity
1.11689