Atec Agilent-E4406A User Manual
Page 12

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QPSK EVM measurement
Range at RF input
+30 to –20 dBm (nominal)
EVM
Range
0 to 25% (nominal)
Floor 1.5%
(nominal)
Accuracy ±1.0%
(nominal)
I/Q origin offset
Range
–10 to –50 dBc (nominal)
Frequency error
Range
±500 Hz (nominal)
Accuracy
±10 Hz (nominal) +
(transmitter frequency x
frequency reference accuracy)
Modulation accuracy measurement (composite rho)
For Pilot, 2 MAC channels, 16 channels of QPSK data
Range at RF input
+30 to –50 dBm (nominal)
EVM
Range
0 to 25% (nominal)
Floor
2.5% or less (nominal)
Accuracy
±1.0% at the range of 5% to 25%
Rho
Range
0.9 to 1.0
Floor
> 0.99938
(0.99938 equals 2.5%EVM)
Accuracy
±0.0010 at 0.99751 Rho
(5% EVM)
±0.0044 at 0.94118 Rho
(25% EVM)
Frequency error
Range
±400 Hz (nominal)
Accuracy
±1 Hz (nominal) +
(transmitter frequency x
frequency reference accuracy)
Resolution
0.01 Hz display resolution
I/Q origin offset
Range
–10 to –50 dBc (nominal)
Resolution
0.02 dB display resolution
Power vs. time
Range at RF input
+30 to –80 dBm (nominal)
Absolute power accuracy for in-band signal
(excluding mismatch error), 18 °C to 30 °C
+30 to –28 dBm
±0.6 dB (nominal)
at RF input
–28 to –50 dBm
±0.8 dB (nominal)
at RF input
–50 to –80 dBm
±1.0 dB (nominal)
at RF input
Intermodulation distortion
Input signal must not be bursted
Range at RF input
+30 to –20 dBm
Input intermodulation
Power range
–20 to –65 dBc
Relative accuracy
±1.5 dB
Resolution
0.01 dB display resolution
Spurious emissions & ACP
Range at RF input
+30 to –20 dBm
Spectrum emission
Power range
–136 dBc/Hz at 1 MHz offset
(nominal)
Relative accuracy
±1.0 dB
Resolution
0.01 dB display resolution
Occupied bandwidth measurement
Range at RF input
+30 dBm to –20 dBm
Frequency
Resolution 1
kHz
Accuracy
±3 kHz at 1 kHz resolution
bandwidth