Fluke DTX Series - Setting the Reference in Loopback Mode

DTX Series CableAnalyzer
Technical Reference Handbook
5-24
Setting the Reference in Loopback Mode
1 Turn on the tester and let it sit for 5 minutes. Allow
additional time if the modules have been stored
above or below room temperature.
2 Turn the rotary switch to SETUP; then select Fiber.
3 Select Remote End Setup; then select Loopback.
4 Turn the rotary switch to SPECIAL FUNCTIONS, select
Set Reference, then press
H. If both a fiber
module and twisted pair adapter are attached, select
Fiber Module next.
5 Clean the connectors on the tester and patch cords.
Connect the patch cords as shown on the tester.
Notes
The Set Reference screen shows reference
connections for the selected test method. Figure
5-11 shows connections for modified Method B.
The patch cords in the tester’s diagrams are
numbered. If you want to meet TSB-140
reporting requirements, you can enter lengths
for each patch cord number after setting the
reference.
6 Press
P.
The View Reference screen shows the reference
values and the date and time the reference was set.
7 Press
K OK.
The View Connections screen shows the test
connections for the selected test method.
8 To enter patch cord lengths to meet TSB-140
reporting requirements, press
J Patch Lengths.
On the Patch Lengths screen, enter the lengths of
the patch cords used for reference and test
connections.
Press
N when you are done.
Caution
Do not disconnect the patch cords from the
tester’s output after setting the reference. If
you do, you must set the reference again to
ensure valid measurements.