Single Side Band (Ssb) Phase Noise - Anritsu S412E Maintenance Manual

3-5 Single Side Band (SSB) Phase Noise

3-5 Single Side Band (SSB) Phase Noise
This test is used to verify the single side band (SSB) phase noise of the spectrum analyzer in the S412E.
Equipment Required
• Synthesized Signal Generator, Anritsu Model MG3692x
• K(m) to N(f) Adapter, Anritsu Model 34RKNF50
• 10 MHz Reference Standard
• RF Coaxial Cable, Anritsu Model 15NN50-1.5C
• BNC(m) to BNC(m) Coaxial Cable, Anritsu part number 2000-1627-R
Procedure
1. Connect the BNC Coaxial Cable between the 10 MHz Reference Standard output and the 10 MHz Ref In
connector of the Anritsu MG3692x Synthesized Signal Generator.
2. Turn both the 10 MHz Reference Standard and the Synthesized Signal Generator on.
3. Set the MG3692x output to 1 GHz CW, with an RF output level of +0 dBm.
4. Install the 34RKNF50 Adapter to the output of the MG3692x and then connect the 15NN50-1.5C RF
Coaxial Cable between the Adapter and the RF In connector of the S412E.
5. Press the On/Off key to turn on the S412E.
6. Press the Shift key and then the Mode (9) key. Use the rotary knob to highlight Spectrum Analyzer and
then press the Enter key to switch to Spectrum Analyzer mode.
7. Preset the S412E by pressing the Shift key, then the Preset (1) key, then the Preset button on the
touchscreen.
Note Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
8. Touch the Amplitude button on the touchscreen main menu and set the Reference Level to 0 dBm.
9. Touch the Atten Lvl submenu button and set to 15 dB.
10. Touch the Freq main menu button and set the Center Freq to 1 GHz.
11. Touch the Span submenu button and set to 110 kHz.
12. Touch the BW main menu button and set the RBW to 1 kHz.
13. Set the VBW to 3 Hz.
14. Press the Shift key, press the Trace (5) key and then touch the Trace A Operations submenu button.
15. Set the # of Average to 7.
16. Wait until the Trace Count displays "7/7".
17. Touch the Marker main menu button and then Peak Search submenu button.
18. Touch the Delta On/Off submenu button to turn Delta On.
19. Use the numeric keypad to enter 10 kHz.
20. Record the measured value in
21. Subtract 30 dB from the measured value and verify that the result is better than –100 dBc/Hz
(for 10 kHz offset) or –105 dBc/Hz (for 100 kHz offset) or –115 dBc/Hz (for 1 MHz offset) and record the
calculated values in
For example: –70 dBc (measured) – 30 dB = –100 dBc/Hz
22. Repeat Step 11 through
2.04 MHz). Record the measured values and calculated values in
3-8
Table A-8, "Spectrum Analyzer SSB Phase Noise" on page
Table A-8.
Step 21 for 100 kHz offset (set Span to 220 kHz) and 1 MHz offset (set Span to
PN: 10580-00324 Rev. N
Chapter 3 — Spectrum Analyzer Verification
Table A-8.
A-5.
S412E MM