Tektronix RSA3303A Service Manual page 79

RSA3303A & RSA3308A Service Manual
c. Set the generator controls:
Frequency
Amplitude
RF output
d. Hook up the signal generator: Connect the generator output through a
50 Ω N-N coaxial cable to the analyzer INPUT. See Figure 4- -14.
2. Check phase noise for a span of 100 kHz:
a. Modify the analyzer controls:
H Press the SPAN key on the front panel.
H With the Span side key, set the span to 100 kHz using the general
purpose knob or the numeric keypad.
H Press the RBW/FFT key on the front panel.
H Press the RBW/FFT side key to select Man.
H With the RBW side key, set the RBW to 200 Hz.
b. Perform the C/N (Carrier-to-Noise ratio) measurement:
H Press the MEASURE > C/N > MEAS SETUP key.
H Press the Offset Frequency side key and set the value to 10 kHz
using the general purpose knob.
H Press the Noise Bandwidth side key and set the value to 2 kHz
using the general purpose knob.
c. Check against limits: Read the phase noise (C/No) at the bottom of the
screen. Confirm that the value is 100 dB/Hz or more.
3. Check phase noise for a span of 1 MHz:
a. Modify the analyzer controls:
H Press the SPAN key on the front panel.
H With the Span side key, set the span to 1 MHz using the general
purpose knob or the numeric keypad.
H Press the RBW/FFT key on the front panel.
H Press the RBW/FFT side key to select Man.
H With the RBW side key, set the RBW to 2 kHz.
. . . . . . . . . . . . . . . . 1500 MHz
. . . . . . . . . . . . . . . . - -5 dBm
. . . . . . . . . . . . . . . . On
Performance Tests
4- 31