NOYAFA NF-838 - Manual (Page 8)

Instructions for product
Turn on the tester. Meanwhile, the default of system is wire map
testing, LCD display is as follows if the cable is not connected.
Wire map testing (Take RJ45 as an example)
Test Result1: Short circuit (SHORT)
If there is short circuit of cable or terminal, three “tick, tick and tick”
will come out from emitter. Meanwhile, LCD display the picture below:
(take 3,4-short circuit as example)
At this moment, press “TEST” key to restart again. If the short circuit
still occurs, please solve “short” circuit problem before measuring.
Turn on the tester, connect one end of the cable to emitter, and the
other end is connected to RJ45 port of remote identifier.Press “test”
to start , if the cable is shielded (or earthing wire), LCD will display
“STP”; if the cable is unshielde (or earthing wire), LCD will display
“UTP”; press “light” key in dim environment.
Your excellent helper in cable test! 04