Spectrum Analyzer Second Harmonic Distortion Test - Anritsu Spectrum Master MS2711D Maintenance Manual

23. Press the
DELTA (M3-M1)
24. Press the
SINGLE/CONT
25. Press the
SINGLE/CONT
recorded values.
26. Subtract 30 dB from the average value and verify that the result is £ –75 dBc/Hz. (For example:
–45 dBc measured – 30 dB = –75 dBc/Hz.)

5. Spectrum Analyzer Second Harmonic Distortion Test

The following test can be used to verify the input related spurious response of the Spectrum Master.
a. Equipment Required:
· Anritsu MG3692A Synthesized Signal Source with options 2A, 4 and 15A, or equivalent
· Anritsu 34RSN50 50 ohm adapter or equivalent
· Anritsu 15NNF50-1.5C RF Coaxial Cable or equivalent
· 10 MHz Reference Standard
· 50 MHz Low Pass Filter (Anritsu part number 1030-96)
· BNC male to BNC male coaxial cable
b. Procedure:
1. Connect the 10 MHz reference source to the Anritsu MG3692A Synthesized Signal Source.
2. Connect one end of the 50 MHz Low Pass Filter to the output of the source and the other end to
the Spectrum Master RF Input with the coaxial cable.
3. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
4. On the Spectrum Master, press and hold the
turn on the Spectrum Master. (This sets the instrument to the factory preset state.)
5. Turn on the 10 MHz reference source and the Anritsu MG3692A Synthesized Signal Source.
6. Set the MG3692A output to 40 MHz CW, with an RF output level of –30 dBm.
NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
7. Press the
AMPLITUDE
8. Enter –27 and press the
9. Press the
Scale
10. Press the
Atten/Preamp
11. Enter 0 and press
12. Press the
FREQ/SPAN
13. Enter 40 and press the
14. Press the
Span
15. Press the
BW/SWEEP
16. Press the
RBW Manual
set the resolution bandwidth to 10 kHz.
17. Press the
VBW Manual
set the video bandwidth to 3 kHz.
18. Press the
MARKER
19. Select the
Edit
Spectrum Master MM
soft key.
key. Read and record the D 3 reading.
key to read and record five values, then calculate the average of the five
key and the
Ref Level
key to set the Reference Level to –27 dBm.
ENTER
soft key and enter then press
7
soft key and then the
to set the attenuation to 0 dB.
ENTER
key and then the
Center
soft key to set the center frequency to 40 MHz.
MHz
soft key and enter . Press the
0.2
key and the
Bandwidth
soft key and use the Up/Down arrow key to select 10 kHz. Press
soft key and use the Up/Down arrow key to select 3 kHz. Press
key, then the soft key.
M1
soft key, then enter . Press the
40
key, then press the
ESCAPE/CLEAR
soft key.
.
ENTER
soft key.
Manual
soft key.
soft key to set the span to 0.200 MHz.
MHz
soft key.
soft key to set M1 to 40 MHz .
MHz
key to
ON/OFF
to
ENTER
to
ENTER
3