Manual

13
Test/Measurement Settings
In order to perform all tests/measurements correctly, you need to make basic test settings.
In the Settings menu, you can select the Wiring Type for the test/measurement, select the
Speed (VF factor) for the TDR function, dene the Cable Type, and specify the IP Address of
the KE7200.
The Settings > Test Settings submenu provides additional specic test settings, giving you the
possibility of creating own cable and wiring denitions, managing the KE7010 remote units, and
specifying the MAC address of the KE7200.
Settings > Wiring
Here you can select the desired wiring type from the list of various options (which
PIN for which wire). This can still be changed during the cable test, however. The
specication of the correct wiring type is important, as all information on the wire
pair and PIN assignment is based on this. Without this information, it will not be
possible for an OK statement to be issued by the test. In addition, only the correct wiring deni-
tion will allow a split pair error message to be sent.
15 common variants are predened.
The following abbreviations are used:
UTP= Unshielded Twisted Pair
STP = Unshielded Twisted Pair
CR = Cross Connect
Settings > Speed
Here the propagation speed of the signal in the cable, the VF factor, is entered as a percentage
of the speed of light. This information is required for length measurements with the TDR function.
Only with the correct VF factor will the cable lengths be determined
correctly!
The VF factor predened for the selected cable type is displayed by default (for cable selection,
see page 14; for cable denitions, see page 14). The value can also be set manually via
the ▲ or ▼ keys.
The data can be obtained from the cable manufacturer. If no information is available on the cable,
the VF factor can also be determined with a piece of cable of known length.
Determining the VF Value
First conduct the cable test on a piece of cable without the remote unit. After completion this,
go to the Speed menu. Here, the measured length will be displayed for the set VF. Now adjust
using the ▲ or ▼ keys until the known cable length is displayed. The VF value to be read is the
propagation speed of this cable.
You can use it to create your own cable denition in the Test Settings > Cable Denition menu.