Agilent Technologies HP8648A Instrukcja Użytkownika Pobierz pdf (Strona 96)

100

101

FM Receivers

Measurement Procedure:

1 Connect the Receiver as shown.

On the Test Set:

2 Press the PRESET key.

3 Press the RX key.

Using the knob and data entry keys:

4 Set RF Gen Freq to the receiver operating frequency.

5 Set Amplitude to −137 dBm.

On the Radio set the Receiver’s Controls as follows:

6 Set power to ON.

7 If required, set frequency to the same value as step 4.

8 Set squelch to minimum.

9 Set RF Gain to maximum (if equipped).

10 Set coded squelch feature (if equipped) to OFF.

11 Set the volume control until noise is at a comfortable level.

12 Increase the Receiver’s squelch control until audio is just squelched.

Special Test Considerations

See "Coded Squelch" on page 47.

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