Microtest OMNIScanner LT Guide de l'utilisateur télécharger pdf (Page 96)

OMNIScanner User Guide

A - 6

Length

· Range: 0 to maximum distance, where max. distance

= 457 m (1500 ft.) for twisted pair cable

· Accuracy: ± K ± Length resolution ± NVP uncertainly,

where K = ± 4% of length or 0.6 m (2ft.), whichever is greater.

Length resolution: 0.3 m (1ft.)

Resistance

· Range: 0 - 500 W

Accuracy: ± 0.5 W @ 0 to 15 W

± 2% @ 15 to 500 W

Resolution: 0.1 W

Power Sum NEXT, ACR and ELFEXT

· Computed for 4 pairs from both ends from the respective pair to pair

NEXT, Attenuation and FEXT measurements.

Optical Measurements (OMNIFiber)

· +3dBm to -55dBm

· .01dB resulution

· ± .25dB typical accuracy

Length (OMNIFiber)

· Maximum 2000m (6600ft)

· 1m (1ft) resolution

Delay (OMNIFiber)

· 0 to 10,000nS

· 1nS resolution

Cable Standards (OMNIFiber)

· TIA 568A

· ISO 11801

High Voltage Input Protection

· The test interface withstands input hazard conditions that arise from

normal telephone interfaces (48 VDC at less than 80 mA) or 24 VAC

power used to power many telephone keysets. The unit detects when a

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Microtest OMNIScanner LT Guide de l'utilisateur Page 96