Can test correspondingly double-twisted
cables1, 2, 3, 4, 5, 6, 7, 8 and G, meanwhile,
can judge wrong connection, short circuit
and open circuit.
NS-468B tests BNC, RJH and RJ45; NS-468
tests RJ11 and RJ45; NS-468N tests RJ45
and BNC; ST-248 tests RJ45 and BNC.
Test of double-twisted cables: switch
on the power. (S is slow automatic grade,
M is manual.) Put cables into both main
tester and remote tester. The lights of
the main tester will turn on sequentially
from 1 to G.
Following are abnormal
- If one cable, for example,
cable No. 3 is open circuited, the two
No. 3 lights of the main tester and remote
tester will not turn on.
- If several cables are
not connected, several lights will not
turn on respectively. If less than two
cables are connected, none of the lights
- If two ends of the
cable is disordered, for example No. 2
and No. 4, then displays on:
- If two cables are short
circuited neither of the corresponding
lights is on of the remote tester while
main tester remains unchanged. If three
cables, including three, are short circuited,
none of the corresponding lights is on.
III. If test
patch panels or wall plate outlets, two
cables which can match each other (eg 110P4
and RJ45) will be connected to the tester.
IV. If test cables of the same axes,
BNC turns on when the cable works.