Agilent Technologies HP8648A Manual do Utilizador descarregar pdf (Página 148)

100

101

AM Receivers

147

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.

6. Set AFGen1 To AM at desired modulation depth (typically 30%).

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

7. Set power to ON.

8. Set AFGen1 To AM at desired modulation depth (typically 30%).

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

10. Set squelch to minimum.

11. Set RF Gain to maximum (if equipped).

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

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

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

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Agilent Technologies HP8648A Manual do Utilizador Página 148

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