NOYAFA NF-268 - Manual (Page 7)

Your excellent helper in cable test! 4
Connect the telephone cable to be tested to RJ11port. Then hold the
receiver to locate the targeted cable as what 3.1 said.
Note: in this case, users should alter the volume to degree 1-3 in order
to find out targeted cable precisely.
3.3 trace monitoring cable (connected to monitor as below)
Connect the telephone cable to be tested to RJ11port. Then hold the
receiver to locate the targeted cable as what 3.1 said.
Note: in this case, users should alter the volume to degree 1-3 in order
to find out targeted cable precisely.
3.4 check short location of non-energized wires (as below)
Connect the bared wires with the two clips, push the key to “scan”,
Keep the probe close to wire, it means normal if “beep” emits. Then
m o v e t h e p r o b e a l o n g t h e w i r e , t h e p o i n t i s s h o r t c i r c u i t w h e n n o
“beep” comes out.
Note:
1 ) t h e t e s t e d w i r e m u s t b e
non-energized.
2)turn the volume to degree
6-8 when tracing cable.
3)Clip 2 cores to tested