Spurious Response (Second Harmonic Distortion) - Anritsu S412E Maintenance Manual

Chapter 3 — Spectrum Analyzer Verification
3-6

Spurious Response (Second Harmonic Distortion)

The following test is used to verify the input related spurious response 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
• 50 MHz Low Pass Filter, Anritsu part number 1030-96
• 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 On both the 10 MHz Reference Standard and the Synthesized Signal Generator.
3. Set the MG3692x output to 50.1 MHz CW, with an RF output level of –30 dBm.
4. Install the 34RKNF50 Adapter to the output of the MG3692x Generator and then connect the male end of
the 50 MHz Low Pass Filter to the Adapter.
5. Connect the 15NN50-1.5C RF Coaxial Cable between the 50 MHz Low Pass Filter and the RF In
connector of the S412E.
6. Press the On/Off key to turn on the S412E.
7. 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.
8. 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.
9. Touch the Amplitude button on the touchscreen main menu and set the Reference Level to –27 dBm.
10. Touch the Atten Lvl submenu button and set to 0 dB.
11. Touch the Freq main menu button and set the Center Freq to 50.1 MHz.
12. Touch the Span submenu button and set to 100 kHz.
13. Touch the BW main menu button and set the RBW to 1 kHz.
14. Touch the VBW submenu button and set to 10 Hz.
15. Press the Amplitude submenu button.
16. Touch the Detection submenu button and then the Peak submenu button.
17. Press the Shift key, press the Trace (5) key and then touch the Trace A Operations submenu button.
18. Set the # of Average to 5.
19. Wait until the Trace Count displays "5/5".
20. Touch the Marker main menu button and then Peak Search submenu button.
21. Record the amplitude of 50.1 MHz in
Harmonic Distortion" on page
22. Touch the Freq main menu button and set the Center Freq to 100.2 MHz.
23. Press the Shift key, press the Trace (5) key and then touch the Trace A Operations submenu button.
S412E MM
3-6 Spurious Response (Second Harmonic Distortion)
Table A-9, "Spectrum Analyzer Spurious Response (Second
A-5.
PN: 10580-00324 Rev. N 3-9