Atec Agilent-E4406A - Manual (Page 12)

12
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