Anritsu AWGN MU368060A - Manual (Page 42)

Section 6 AWGN Internal Adder Function
6-10
6.5 Function Details When Selecting 1xEVDO
Image diagram for the AWGN internal adder function is shown below:
1.23 MHz x4/x3/x2
1.23 MHz
Carrier frequency
1xEVDO Modulation
Wave
Noise (AWGN)
Noise is added to the same carrier as the 1xEVDO modulation wave and
outputted as I/Q and RF signal.
Setting and displayed values for the AWGN internal adder function are
shown below:
[1] C/N
Sets the ratio between noise power within 1.23 MHz band and 1xEVO
modulation wave power.
The total power of noise and 1xEVDO modulation wave is fixed to the
setting value for RF Level.
Therefore, the lower C/N is set, the larger the noise power becomes.
To change the noise power while fixing 1xEVDO modulation power,
both C/N and RF Level settings must be changed.
[2] Wanted
Displays power of 1xEVDO modulation wave.