Atec Agilent-N5181B-N5182B - Manual (Page 28)

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0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
-10 -5 0 5 10 15
EV
M (%
rms)
Power (dBm)
Measured LTE E-TM 3.1 10 MHZ EVM (@ 2100 MHz)
with Option 1EA
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 2000 3000 4000 5000 6000 1000
EVM (% rms)
Frequency (MHz)
Measured EVM performance vs carrier frequency
(QPSK, Alpha-0.25, Power = +4 dBm, Symbol Rate = 4 MSyb/s, ALC ON)
0
1
2
3
4
5
6
7
8
9
0 2000 3000 4000 5000 6000 1000
EVM (% ms)
Frequency (MHz)
Measured EVM performance vs carrier frequency
Correction ON
Correction OFF
(Internal channel correction OFF and ON)
QPSK, Alpha = 0.25, Power = +4 dBm, Symbol Rate = 62.5 MSym/s, ALC ON
0
0.5
1
1.5
2
3
2.5
3.5
4
4.5
5
0 40 60 80 100 20
EVM (% rms)
Symbol rate (MHz)
Measured EVM performance vs symbol rate
(MXG factory channel correction OFF/ON, ALC ON/OFF)
QPSK, Alpha = 0.25, Power = +4 dBm, Freq. = 2.2 GHz
ALC ON-Corrections OFF
ALC ON-Corrections ON
ALC OFF-Corrections ON