Cable Length Measurement - Pro'sKit MT-7071 User Manual

MEASURE LENGTH, LENGTH CALIBRATION AND RECALL
PARAMETER
Caution!
•
Please do not connect to any equipment or terminator, when measuring
cable length or performing length calibration, the cable should be in
open status. The measured cable should be 2 conductors at least, it is
not suit for single conductor wire. The cable length used for calibration
parameter should be 10m to 50m (33~164 Ft /11~55 Yard).
•
When performing cable length measurement, the cable should be in
open status, it cannot apply for continuity、short or crossover testing
cable. The length of cable should be 2m (6.8 Ft / 2.2 Yard)。and the
Maximum measuring distance is 1200m (4,000Ft/3000Yard).
•
When performing cable length measurement or length calibration, in
order to ensure the measuring accuracy, please operates under the
ambient temperature 23±5℃, RH 20%~75%. Otherwise, it may cause
big measurement error.
•
Since there are many different cable specifications, brands and
manufacturers in the market, for ensuring correct measurement, please
set the cable calibration parameter as reference in advance. Before
measuring cable length, please reload the calibration parameter you set
and then measure the cable length. It will cause big measuring distance
difference if without calibration parameter. MT-7071 default measuring
cable type is UTP (Cat.5e) 、category 6 (Cat 6)、phone cable
(HYV4*1/0.4BC) and Coax cable(RG59).
•
If user couldn't judge what type the measuring cable is, please use a
high accuracy resistor meter to measure the wire resistance of same
length cable and judge the cable type according comparing the
resistance.
•
When performing cable mapping, do not connect the tested cable to any
electric circuit、equipment or adapter, it will affect the test result.
•
When performing cable length measurement function, LAN cable is
based on #3pin, telephone cable is based on #4pin, coax cable is based
on G pin. If the test results of measuring cable length to opens are
different, please refer to the length of based-pin. If the based-pin is open,
please change the wiring sequence; make sure the wire of based-pin is
good, then re-measures the cable length to opens.
•
When performing cable length measurement function, if the test result is
shown "short" on the LCD, please remove the fault, then re-measures
the cable length to opens.
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