3-3 Displayed Average Noise Level (DANL) Spectrum Analyzer Performance Verification
3-4 PN: 10580-00303 Rev. D Model MS20xxB MM
3-3 Displayed Average Noise Level (DANL)
The following test is used to verify the Displayed Average Noise Level (DANL) of the spectrum analyzer in the
MS2034B and MS2035B VNA Master. This test is performed using the RMS detection mode.
Equipment Required
• 50 ohm Termination, Anritsu Model 28N50-2
Procedure
1. Connect the 50 ohm Termination to the RF In connector of the VNA Master.
2. Press the On/Off key to turn on the VNA Master.
3. 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.
4. Press the Shift key and then the Preset (1) key. Press the Preset button on the touch screen submenu to
set the instrument to the factory preset state.
5. Press the Shift key and then the Sweep (3) key, Sweep Mode submenu key and then the Performance
submenu key.
6. Press the Back button and press the Detection submenu button and then press the RMS/Avg submenu
button.
DANL Test with Preamp Off
7. Press the Amplitude button on the touch screen main menu and then the Reference Level button on the
touch screen submenu.
8. Use the numeric keypad to enter –20 and press the dBm submenu button.
9. Press the Atten Lvl submenu button.
10. Use the numeric keypad to enter 0 and then press the dB submenu button.
11. Make sure that the Pre Amp On/Off submenu button is in the Off position. If the preamp is on, then press
the Pre Amp On/Off submenu button to turn it off.
12. Press the Freq main menu button and then the Start Freq submenu button.
13. Use the numeric keypad to enter 10 and then press the MHz submenu button.
14. Press the Stop Freq submenu button.
15. Use the numeric keypad to enter 2.4 and then press the GHz submenu button.
16. Press the BW main menu button and then the RBW submenu button.
17. Use the numeric keypad to enter 100 and then press the kHz submenu button.
18. Press the VBW submenu button.
19. Use the numeric keypad to enter 1 and then press the kHz submenu button.
20. Wait until one sweep is completed.
21. Press the Marker main menu button and then the Peak Search submenu button.
22. Record the Marker 1 amplitude reading into Appendix A in the 100 kHz RBW Measured Value column of
Table A-9, “Spectrum Analyzer DANL with Preamp Off” on page A-5 for MS2034B or Table A-34,
“Spectrum Analyzer DANL with Preamp Off” on page A-17 for MS2035B.
Note Before continuing, allow a 30-minute warm up period for the internal circuitry to stabilize.
To Next Page
Loading...
Need help?
General
