OMNIScanner User Guide
A - 4
• 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
OMNI
Fiber
Test Functions
• Multimode Fiber: Length, Propagation Delay, Loss
• Single-mode Fiber: Length, Propagation Delay, Loss
Transmission Performance Measurement Method
All cabling transmission performance measurements (NEXT, RL, Attenua-
tion, and ELFEXT) are implemented using swept frequency domain, vector,
digital signal processing measurement methods to ensure accurate, repeat-
able results.
Transmission Performance Measurement Parameters
The accuracy of the RF transmission performance measurements is calcu-
lated in accordance with error models documented in related TIA docu-
ments. OMNI
Scanner
is designed to exceed Level III accuracy require-
ments. The following table provides typical specifications for important
instrument parameters relating to the measurement accuracy models.
Instrument Parameter @ 100 MHz @ 200 MHz @ 300 MHz
Residual NEXT > 105 dB > 105 dB > 100 dB
Noise Floor > 100 dB > 100 dB > 95 dB
Detector Accuracy 0.2 dB 0.2 dB 0.2 dB
Output Signal Balance 50 dB 45 dB 40 dB
Common Mode Rejection 50 dB 45 dB 40 dB
Port Match Error 0.1 dB 0.2 dB 0.5 dB
Directivity 50 dB 50 dB 45 dB
RL Tracking 0.05 dB 0.05 dB 0.05 dB
RL Source Match 50 dB 45 dB 40 dB
Wire Map
• Finds miswires, opens, shorts, crossed and split pairs and presents
results in a schematic format
• Includes shield test if connected
• Uses OMNI
Remote
for complete mapping of wiring at both ends of the
cable