MODEL: LCT-100
Local Test
Remote Test 2 x LCT-100's
Terminator Loopback
1
2
3
4
Terminator LBack, Cable identif ication
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2
3
Remote Test, Cable identif ication
LCT-100 APPLICATION EXAMPLES
LAN Cable Tester / Break Out Box
Quick Steps
Operation of the LCT-100 is very simple.
There are configuration functions which are
explained in more detail later in the guide. For
the impatient user wanting to do immediate
testing on some cables, we have provided the
following three QUICK STEPS.
Step one Connection: The LCT-100 is
capable of testing cables in any one of three
modes. Local Test mode is accomplished by
connecting both ends of the cable under test to
the LCT-100’s IN/OUT and LOOPBACK IN
ports. Remote Test mode uses two (2) LCT100 units with the cable connected at each
unit’s IN/OUT port. Terminator Lback
(loopback) mode uses the supplied terminator
ID block connected at one end of the cable
while the other end of the cable is connected
to the LCT-100’s IN/OUT port.
Step two Menu Select: Following initial
power on of the LCT-100, the unit will be at
the top menu for “Cable Test Mode”. Press
“ENTER” and use the “” arrow keys to
select the appropriate test mode per your
connection method of step one above. Press
“ENTER” to test the cable.
Cable Locator: Cable location may be
accomplished using multiple remote LCT100’s or with optional LCT-T locators. When
using multiple LCT-100 units, the local and
remote units may have their I.D. set from 0
through F (hexadecimal). The LCT-T locators
incorporate factory set I.D. numbers and are
available in ID’s from 1 to 8.
Application drawing examples for all the
testing modes, Local Test, Remote Test, and
Terminator LBack are shown on the back
cover of this guide.
Wiring Schemes
The LCT-100 is an intelligent continuity
tester for LAN cables which saves time on the
job.
Features
 Hand-held, easy to operate.
 Easy to diagnose RJ-45, RJ-11, RJ-12 and
BNC cables with preset wiring schemes.
 Easy to read cable status and cable
continuity, open, short, and mismatch.
 Built in Break Out Box.
 Auto scan pin assignment.
 Easy to read LCD display.
 Standard pin configurations and user defined
cable wiring memorized in CPU
 Tests both shielded and unshielded cable
types in local and remote, unshielded only
with LCT-T (Terminator).
 Wire map for cable pairs.
 Programmable auto shutdown function.
 Maximum testing length is up to 1030 meters
using remote LCT-100 or 300 meters using
LTC-T terminator.
 Enable identification and tracing of the other
end’s ID.(with LCT-T or remote LCT-100)
 Remote connected indication.
 Battery low indicator.
Step three View Results:
The LCT-100 will display the line
connections of the cable and attempt to
identify the cable wiring type from its internal
database.
display
SELECT FUNCTION:
screen
Cable Test Mode
comment
Top level
Press ENTER
SELECT FUNCTION:
select menu
Local
Test
toggle menu
Test

Press ENTER
M. out:12345678G
tested
L. in: 3456 G
3|4|5|6|G|
3|4|5|6|G|
T-Ring STP
identified
ID:0
Lines
(local in)
Connected pairs
OK
Cable
(local unit ID)
Additional actions:
 or  toggle between Lines tested and Cable
identified pages.
ENTER test again.
ESC return back to Test select menu
Config Mode: From the very top of the LCT100 menu (just after power on completed)
select the Config menu by pressing either of
the arrow keys once, then press ENTER. The
arrow keys will browse through the following
menu items, which we will now describe in
detail.
The User Defined function allows you to
describe your own custom cable pin out which
will be entered temporarily into the cable
identification database. Use the ENTER key
to toggle between “SET” and “<->”. In “SET”
mode the arrow keys will toggle the line
values. To save your definition, cursor to
“OK” and press ENTER. When testing a cable
in any mode that matches your designed cable,
it will be identified as USER DEF. The user
defined information is lost as soon as the
LCT-100 is powered off.
The Shutdown Time function is used to
change the automatic power down feature of
the LCT-100. By default, the LCT-100 will
automatically power down after 10 minutes of
no keyboard activity. Use the arrow keys to set
timer to 10, 30, 60 minutes, or NONE (no auto
shutdown), then press ENTER.
Breakout Pins Description:
The breakout section of the LCT-100 consists
of two each of 10 LED BAR and 10 pin SIP,
plus one 10 position DIP SWITCH. The red
LED BAR displays the presence of signal out
from each of the RJ-45’s 8 connections plus
shield in pin order #1 through #9. Red LED
position #10 indicates a “battery low”
condition when using an internal 9V battery.
The green LED BAR displays the presence of
signal arriving at the LOOPBACK IN
connector for each of the RJ-45 connections
plus shield. The green LED, at position #10,
lights whenever power is being supplied to the
external power input jack by the AC power
converter and will remain lit even when the
power switch is in the off position. The DIP
switch provides a means of connecting the
send and receive circuitry for each various pin
on a 1 to 1 basis. For non 1 to 1 shunting, gold
pin shunt wires may be used, connecting out
and in. NOTE: The # 10 DIP SWITCH and
SIP positions have no function. The BNC
connector pins for center and shield
correspond to break out pins and DIP switches
#1 and #9 respectively.
Cable testing: During any mode of cable
testing, the first screen display will show the
top line of out connections 1 through 8 plus G
(shield) as they are scanned. The following
screen will match the connections between the
“out” lines (top row) and the corresponding
line connections “in” (shown on the bottom
row). Following this screen page will be the
cable identification information. If at least one
wire pair is not connected, the display will
read “NO CONNECT”. A shorted cable will
read “SHORT”.
Remote cable testing
requires two LCT-100 units, one at each end
of the cable under test. The cable is connected
to each separate LCT-100 unit at the IN/OUT
ports The lower row display of the cable
identification screen will show the I.D. number
of the remote LCT-100 unit. When at the top
level menu screen, pressing ESC will show
“REMOTE CONNECTED” and both unit IDs.
When testing with a Terminator Loopback
adapter, the G (shield) cannot be tested.
Therefore, in either local or remote test modes,
both UTP and STP cable types are supported.
In Terminator Loopback mode only UTP
cables are fully supported. STP cables may be
tested, however the continuity of the shield
cannot be determined.
The Setup ID Code function allows you to
program an ID number into the LCT-100 for
identification purposes during remote testing
or cable locating. By default the LCT-100’s
ID is ZERO (0). It may be set to any value up
to hex F (decimal 15). The unit will default to
zero if powered off and on. Use the arrow
keys to select the ID code and then press
ENTER. The remote ID numbers for the
LCT-T locators are factory set. The included
terminator has an ID of 1. Additional optional
terminators are available in ID’s from 1 to 8.
The Backlight Toggle function is used to turn
on and off the LCD’s back light. Use the
arrow keys to select the light function and then
press ENTER. Alternatively, the back light
may be toggled at any time from any menu by
simply pressing any two keys simultaneously.
If ambient light is sufficient, it is
recommended that the backlight be turned off,
as this will greatly increase the useful battery
life. The battery should be replaced as soon as
the “BAT. LOW” indicator LED starts to flash
on the LCT-100.
LCT-100 Menu Structure
The following is the menu structure of the
LCT-100.
Cable Test Mode
Local Test
PLUG IN/OUT TO
LOOPBACK IN &
PRESS ENTER.
Remote Test
Once
PLUG MAIN IN/OUT
TO REMOTE IN/OUT
& PRESS ENTER.
Continuous
PLUG MAIN IN/OUT
TO REMOTE IN/OUT
& PRESS ENTER.
Terminator LBack
PLUG IN/OUT TO
CABLE LOOPBACK
TERMINATOR &
PRESS ENTER.
Config Mode
User Defined
Shutdown Time
10 30 60 NONE
Setup ID Code
0123456789ABCDEF
Backlight Toggle
ON OFF
Cable Types
Unshielded Twisted Pair (100, Cat 3,4 & 5)
Foil screened Twisted Pair (ScTP 100 and
120, Cat 3,4 & 5)
Shielded Twisted Pair (150 IBM Type 1&6)
Coax (10Base2, RG-58, RG-59 & RG-62)
Recognized Wiring Schemes
10Base-T
Token Ring
TP-PMD
AT&T 258A
EIA/TIA-568A/B
USOC
HUB-HUB
plus User Defined
Specifications
 LCD Display: 2 lines by 16 characters with
LED back light
 Connectors: (2) RJ-45(8P8C) jacks and (2)
BNC female connectors
 Control keys (4): Right arrow, Left arrow,
Enter, and ESC keys
 Power: (1) 9V dry cell battery or External
DC 9V power supply.
 Size: 15.7 x 9.7 x 4.5 cm
 Weight: 0.4kg net