Pro's Kit MT-7071, User Manual, Page: 25 / 84

24
SHIELDED LAN CABLE & CONTINUITY TEST
DANGER
：
Before testing, please make sure the power of receiver is
OFF.
If you want to confirm the cable is shielded or unshielded, or is continuity or open,
please follow the step as below:
1. Refer to figure 11, plug alligator clip patch cord into RJ11 jack, and
another terminal connect with tested cable.
2. Select cable type, please refer to page30
「
Operating process chart
B.(Type
：
)
」
to select cable type (TEL)
3. Perform cable mapping, please follow the steps as page30
「
Operating process chart C.(Cable Mapping)
」
.
4. The test result is as figure 11.
5.
If the tested result shows “Short mapping” with wire 3 and 4 that
indicates wire status is continuity (resistance<500
Ω±100Ω
). If the
te
sted result shows “Cable Open or too short!” indicates the wire is
open circuit or poor connectivity or shielding bad (resistance>500Ω
±
100Ω
).
LC
D C
AB
LE
LE
NG
TH
TO
NE
R
&
PRO
BE
MT
-70
71
TR
AN
SM
ITT
ER
ENT
ER
RET
URN
DOW
N
UP
Open or unshielded:
Resistance>500Ω±100Ω
Short or shielded:
Resistance<500Ω±100Ω
Short mapping
:
1 2 3 4 5 6
Cable open or
too short !
Testing for
continuity
Validating the
Cable
’s Shield
Figure 11 Shielded LAN Cable & Continuity Test
代表：連通或屏蔽線
阻抗＜
500Ω
代表：斷路或非屏蔽線
阻抗＞
500Ω
短 路 訊 息：
1 2 3 4 5 6
線纜開路或者
線纜過短！