VXI 3002 - Manual (Page 84)

5-9
SSB phase noise
Test procedure
UUT
C2563
RF LO
RF OUTPUT
Signal generator
RF OUT
Measuring
receiver
Fig. 5-6 SSB phase noise test set-up
(1) Connect the test equipment as shown in Fig. 5-6.
(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 5-21.