Spectrum Analyzer Resolution Bandwidth Accuracy Test - Anritsu Spectrum Master MS2711D Maintenance Manual

7. Spectrum Analyzer Resolution Bandwidth Accuracy Test

The following test can be used to verify the resolution bandwidth accuracy of the Spectrum Master at dif-
ferent frequencies.
a. Equipment Required:
· Anritsu MG3692A Synthesized Signal Source with options 2A, 4 and 15, or equivalent
· Anritsu 34RSN50 50 ohm adapter or equivalent
· Anritsu 15NNF50-1.5C RF Coaxial Cable or equivalent
· 10 MHz Reference Standard
· 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 the output of the Anritsu MG3692A Synthesized Signal Source to the Spectrum Master
RF Input.
3. On the Spectrum Master, press and hold the
turn on the Spectrum Master. (This sets the instrument to the factory preset state.)
NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
4. Set the MG3692A output to 1 GHz, with an RF output level of –30 dBm.
5. Press the
AMPLITUDE
6. Enter –27 and press the
7. Press the
Scale
8. Press the
FREQ/SPAN
9. Enter and press the
1
NOTE: The Measured Occupied BW value for each RBW setting can be recorded in Table 1, page 8.
1 MHz RBW Test
10. Press the
Span
11. Press the
BW/SWEEP
12. Press the
RBW Manual
set the resolution bandwidth to 1 MHz.
13. Press the
VBW Manual
set the video bandwidth to 3 kHz and select
14. Press the
MEAS
15. Press the
MEAS
key. The displayed D2 frequency should be ± 5% of the RBW.
300 kHz RBW Test
16. Press the
FREQ/SPAN
17. Press the
Span
18. Press the
BW/SWEEP
19. Press the
RBW Manual
set the resolution bandwidth to 300 kHz and select
20. Press the
MEAS
soft key. The displayed D2 frequency should be ± 5% of the RBW.
21. Press the
M2
6
key and the
Ref Level
key to set the Reference Level to –27 dBm.
ENTER
soft key and enter then press
3,
key and the
Center
soft key to set the center frequency to 1 GHz.
GHz
soft key, enter and press the
1.5
key and the
Bandwidth
soft key and use the Up/Down arrow key to select
soft key and use the Up/Down arrow key to select
key, the soft key, the
OBW
key, then the key. Press the
MARKER
key.
soft key, enter and press the
450
key and the
Bandwidth
soft key and use the Up/Down arrow key to select
key and then the
MARKER
key, then press the
ESCAPE/CLEAR
soft key.
.
ENTER
soft key.
soft key to set the span to 1.5 MHz.
MHz
soft key.
.
BACK
soft key, and then the
dBc
soft key and then the
M2
soft key to set the span to 450 kHz.
kHz
soft key.
.
BACK
key.
key to
On/Off
. Press to
1 MHz ENTER
and press
3 kHz ENTER
key.
ENTER
soft
Delta (M2–M1)
. Press
300 kHz ENTER
Spectrum Master MM
to
to