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OMNISCANNER
A.11 OMNIScanner Test Functions
• Wire Map
• NEXT (Near-End Crosstalk)
• Return Loss
• Attenuation
• ELFEXT (Equal Level FEXT)
• ACR (Attenuation to Crosstalk Ratio)
• Bandwidth
• Length/Delay
• Resistance
• Power Sum, NEXT, ACR, and ELFEXT
• Coax Tests: Length, Delay, Impedance, Resistance
A.12 OMNIFiber Test Functions
• Multi-mode fiber: Length, Propagation Delay, Loss
• Single-mode fiber: Loss
A.13 Transmission Performance Measurement Method
All cabling transmission performance measurements (NEXT, RL, Attenuation, and
ELFEXT) are implemented using swept frequency domain, vector, digital signal
processing measurement methods to ensure accurate, repeatable results.
A.14 Transmission Performance Measurement Parameters
The accuracy of the RF transmission performance measurements is calculated in
accordance with error models documented in related TIA documents.
OMNIScanner is designed to exceed Level III accuracy requirements. The
following table provides typical specifications for important instrument parameters
relating to the measurement accuracy models.