Measurements; Wiremap; Length; Propagation Delay And Skew - Agilent Technologies WireScope 350 User Manual

Srsr…rpr
Hrh†ˆ…r€r‡†

Measurements

Wiremap

Length

Propagation Delay and Skew

8−2
The WireScope 350 makes the following test measurements.
Wiremap testing checks for proper continuity and termination of cables.
The test identifies the following faults:
• Short circuit
• Open circuit
• Reversed pairs
• Transposed pairs
• Split pairs
• Shield continuity faults
Length measurements determine the electrical length of cable runs up to
1100 feet (335 meters). Accurate length measurements require accurate
NVP settings. Choosing a cable type from the WireScope's database
automatically loads NVP settings, or the NVP for a cable can be
measured on a sample (see Learning the NVP of a Cable, on page 6-22).
Grt‡uÃHrh†ˆ…r€r‡ÃTƒrpvsvph‡v‚†
±
6ppˆ…hp’
±
Sr†‚yˆ‡v‚
Hvv€ˆ€Ã9v†‡hpr Ãsrr‡ÃÃH
Hh‘v€ˆ€Ã9v†‡hpr
The Propagation Delay test measures the one-way propagation delay
over each pair of the tested cable run. Skew is the difference in
propagation delay between the pairs with the longest and shortest delay
in a cable.
Q…‚ƒhth‡v‚Ã9ryh’ÃhqÃTxrÃHrh†ˆ…r€r‡ÃTƒrpvsvph‡v‚†
±
6ppˆ…hp’
±
Sr†‚yˆ‡v‚
Hvv€ˆ€Ã9ryh’ Áh‚†rp‚q†
Hh‘v€ˆ€Ã9ryh’ !Áh‚†rp‚q†
±
Ã#ÈÂ…à Ã!Ãsrr‡Ã%ÃHÐuvpur‰r…Ãv†Ãt…rh‡r…
à Ãs‚‚‡Ã"ÃHÃ1à H
 Ãsrr‡Ã""$ÃH
±
Ã#ÈÂ…à à Áh‚†rp‚q†Ðuvpur‰r…Ãv†Ãt…rh‡r…
à Áh‚†rp‚q†