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3.0 FUNCTIONAL DESCRIPTION
The LanScaper™ is a jack identier, cable tester and PING tester in one
tester. The LanScaper™ has a backlit LCD display and eight momentary
buttons. The rubber end cap at the bottom is the battery compartment
cover.
The LanScaper™ is powered on by pressing any one of three buttons:
PWR, CABLE or NTWRK. The tester will turn on in the last mode used
before turning off if the PWR button is pressed. If the CABLE button
is pressed, the tester immediately starts executing the Jack ID test.
Pressing the NTWRK button causes the Blink Link LED test to begin.
The LanScaper™ is turned off by holding down the PWR button until the
display goes blank. The tester will also shut off automatically 15 minutes
after the last button press in most modes, 30 minutes in Blink Link LED
mode and 60 minutes in Tone Generator mode. Short presses of the
PWR button, toggles the back light on and off. The back light turns off
automatically about 5 minutes after being turned on. Using the back light
increases power consumption by between 20% and 50%.
There are eight test modes and a setup function as described below.
The mode switch is the double button immediately above PWR. The top
button is labeled CABLE, the bottom button is labeled NTWRK and the
area bridging the two button is labeled SETUP. Pressing a mode button
will immediately end any currently running task and either begin the
executing the rst task of a new category (cable or network) or display
the next mode in the same category, waiting for a press of SEL to begin
the testing. Subsequent presses in the same category advances to the
next mode, rolling over to the rst mode when the end is reached, still
waiting for SEL to begin.
3.1 Voltage Check
All tests, except Jack ID, start with a check for voltages on the pins on
the tester’s jack. If found, the message “-Voltage Found- SEL Jack ID”
is displayed, and the only option for the user is to press the SEL key to
start the Jack ID test to determine what type of interface or what voltages
are present on the jack. The tester monitors the jack to see if the voltage
is removed for ve minutes. The selected test will continue if the voltage
is removed, or the tester will shut itself off after the ve minutes. The
exception to this behavior is in the Network Modes. When voltage is
found in these modes, the tester checks to see if it is Ethernet Phantom
Power. This is a voltage which is connected to the center taps of the
Ethernet interface transformers of some network equipment to power
remote devices, like IP phones or wireless transceivers. This power is
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