VF / DSL Cable Qualifier
182
TERM IMP:
The CableSHARK's impedance needs to match the characteristic impedance of
the cable. This causes the CableSHARK at either end of a test (including Single
End) not to reflect back any test signals or unnecessarily attenuate the test signal.
The options are 100 ohms and 135 ohms (no AUTO option for Return Loss test,
older units will show 120 ohms and 150 ohms)
10.1 Running a Return Loss Test
Use caution when connecting the test set, as telephone cables may have dangerous A.C. or D.C.
voltages on them.
Press the RUN / STOP button on the front of the CableSHARK to initiate the Return Loss test. Figure 10.1A
shows an example of the results obtained from a Return Loss Test.
Test completed.
MAIN
MENU
E
F
CHG
SAVE/
UPLOAD
dB
17
565
1113
2208 kHz
1660
Level
Cursor position
= 29.3 dB
= 1000.500 kHz
0.0
10.0
20.0
30.0
40.0
50.0
60.0
SHOW
REF
Impedance = 100 ohms
ZOOM IN
HORIZ
ZOOM IN
VERT
TEST
SETUP
Press or to move cursor
dB
0.0
10.0
20.0
30.0
40.0
50.0
60.0
F
IGURE
10.1A
–
C
OMPLETED RETURN
L
OSS TEST
Summary of Contents for CableSHARK P3
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Page 262: ...VF DSL Cable Qualifier 250 CSA Loop 6 CSA Loop 7 CSA Loop 8 Extended CSA Loop 9...
Page 263: ...CableSHARK P3 User Guide 251 Extended CSA Loop 10 Mid CSA Loop 0 Mid CSA Loop 1 Mid CSA Loop 2...
Page 264: ...VF DSL Cable Qualifier 252 Mid CSA Loop 3 Mid CSA Loop 4 Mid CSA Loop 5 Mid CSA Loop 6...
Page 265: ...CableSHARK P3 User Guide 253 ANSI Loop 2 ANSI Loop 3 ANSI Loop 4 ANSI Loop 5...
Page 266: ...VF DSL Cable Qualifier 254 ANSI Loop 6 ANSI Loop 7 ANSI Loop 8 ANSI Loop 9...
Page 267: ...CableSHARK P3 User Guide 255 ANSI Loop 11 ANSI Loop 12 ANSI Loop 13 ANSI Loop 15...
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Page 319: ...CableSHARK P3 User Guide 307 Notes...
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