Atec Agilent-N5171B - Manual (Page 27)

27
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
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
-10 -5 0 5 10 15
EVM (% rms)
Power (dBm)
Measured LTE E-TM 3.1 10 MHZ EVM(@ 2100 MHz)
with Option 1EA
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
(Internal channel correction OFF and ON)
QPSK, Alpha = 0.25, Power = +4 dBm, Symbol rate = 62.5 MSym/s, ALC ON
Correction ON
Correction OFF
0
0.5
1
1.5
2
3
2.5
3.5
4
4.5
5
0 30 20 50 40 60 70 10
EVM (% rms)
Symbol rate (MHz)
Measured EVM performance vs symbol rate
(EXG 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