Test-Um NT750 - Manual (Page 5)

LanScaper
TM
For detailed description of each function, see the Functional Description section. Interpreting Cable
Test Results and Error Messages sections are useful reference sections.
- The LanScaper uses IP address protocol and recognizes Auto-
Negotiation using Fast Link Pulses to report advertised Ethernet capability. LanScaper™ also
supports a modified version of auto MDI/MDI-X to allow for connection to a HUB, switch or NIC
with a straight through cable. The LanScaper™ operates using 10 base-T for all network
transmissions. The vast majority of 100 base-T Fast Ethernet products support 10 base-T. However,
should a HUB or switch be 100 base-T only through settings or by design, a different port, a
change of settings or insertion of an inexpensive 10/100 HUB in line with the LanScaper™ will be
necessary.
To turn the LanScaper™ off after any test, press
and hold PWR button until the display turns off. The tester will turn off automatically after about
15 minutes in all modes except Tone Generator, which is 60 minutes, and Flash Link LED, which is
30 minutes. When connecting to unknown jacks or cables, it is best to begin with the power off and
turn the LanScaper™ on after the connection is made. This insures that the voltage check will be
run first before any other testing.
1) With LanScaper™ powered off, connect to unknown jack or plug.
2) Press CABLE button, LanScaper™ will power on in Jack ID mode and determine what device is
connected to the other end of the cable or test the cable if no connection is found.
- Skips the ID portion of the Jack ID test above.
1) Connect one end of cable run to be tested to LanScaper™. Press CABLE button repeatedly until
Cable Test is displayed (twice if unit was off). Press SEL button to enter test.
2) If the cable is connected while the tester is on, a single-ended test for shorts, opens and split
pairs will most likely be in progress. Press SEL button to force a new test to begin.
3) For a complete test, connect a remote to the other end of the cable.
Any patch cables used to connect the tester and remote to a cable run must be
short compared to the cable run for accurate open and split pair indication, no more than 10% of
the total run length or 3 feet, whichever is less. A cable must be at least 4 feet long for single-
ended test to work properly.
1) Connect cable to be traced to main unit. Turn on tester by pressing CABLE button. Press
CABLE button until Tone Generator is displayed, than press SEL button.
2) Press SEL until desired tone is selected. The up/down arrow keys select the pin or pair(s) to
carry the tone.
3) For strongest signal, do not connect remote. Due to the shielding effect of twisted pairs, the
strongest signal is obtained by having one wire of a pair carry tone. Selecting a single pin
instead of a pair will do this.
1) Connect cable to main unit. A remote may be at the other end, but is not required.
2) Turn on unit by pressing CABLE button. Press CABLE button until Cable Length is displayed,
then press SEL button. To change length units between feet and meters, use setup mode.
1.5 Network Connectivity
-
2.1 To ID an Unknown Jack or Plug -
2.2 To Test Cables Only
2.3 To Place Tone on a Cable -
2.4 To Measure Length of a Cable -
™
2.0 STEP BY STEP USE INSTRUCTIONS
Application Hints: