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SSB phase noise
Test procedure
UUT |
| Signal generator |
RF OUT |
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|
|
| RF OUTPUT |
RF | Measuring | LO |
| receiver |
|
|
| C2563 |
Fig. 5-6 SSB phase noise test set-up
(1)Connect the test equipment as shown in Fig.
(2)On the UUT set:
Carr Freq | 470 MHz |
RF Level | 0 dBm |
(3)On the measuring receiver:
Tune the receiver to 470 MHz.
Select 24.0 SPCL to enter selective power measurement mode.
Select 23.1 SPCL to set the LO to external.
(4)Set the signal generator to a carrier frequency of 470.455 MHz, RF level 0 dBm.
(5)On the measuring receiver:
Select 24.5 SPCL to establish the IF reference value (in volts).
Select 24.6 SPCL to set the reference to 0 dBm.
(6)Fine tune the signal generator frequency until a maximum value is displayed on the measuring receiver.
(7)Offset the signal generator by 20 kHz.
(8)On the measuring receiver:
Select 24.7 SPCL to normalize the measurement for a 1 Hz bandwidth.
(9)Offset the signal generator by 20 kHz.
(10)Measure the level on the receiver (the SSB phase noise in a 1 Hz bandwidth) checking that the result is within the specification shown in Table