Fluke DTX-1800, Technical Reference Handbook

Page: 87 / 398

3-1
Chapter 3: Certifying Twisted Pair Cabling
Setting the Reference
The reference procedure sets a baseline for insertion loss,
ACR-F, and dc resistance measurements.
Run the tester’s reference procedure at the following times:
•
When you want to use the tester with a different smart
remote. You can reference the tester to two different
smart remotes.
•
Every 30 days. Doing so ensures maximum accuracy of
test results.
You do not need to set the reference after changing link
interface adapters.
To set the reference:
Note
Turn on the tester and smart remote and let them
sit for 1 minute before setting the reference. Set
the reference only after the testers have reached an
ambient temperature between 10
°
C and 40
°
C
(50
°
F and 104
°
F).
1 Attach permanent link and channel adapters and make
the connections shown in Figure 3-1.
For the DTX-ELT and DTX-CLT, which do not include
permanent link adapters, use the reference module
included to connect the main and remote testers, as
shown in Figure 3-2. (You may use the reference
module, if available, to make reference connections for
any DTX model.)
2 Turn the rotary switch to SPECIAL FUNCTIONS.
3 Highlight Set Reference; then press
H
. If both a
fiber module and copper adapter are attached, select
Link Interface Adapter next.
4 Press
P
.