Exfo CableSHARK P3 VF/DSL Cable Qualifier Instrukcja Użytkownika Strona 139
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CableSHARK P3 User Guide
127
Test completed. At least 2 load coils detected.
MAIN
MENU
EF
CHG
SAVE/
UPLOAD
TEST
SETUP
1000 3200 5400 9800 Hz7600
3000
SHOW
REF
Ohm
2000
1000
0
Press or to move cursor
Impedance
Cursor position
= 745 ohms
= 5390 Hz
4000
3000
2000
1000
0
4000
ZOOM IN
HORIZ
ZOOM IN
VERT
FIGURE 8.6.2B - RESULTS OF A SINGLE END LOAD COIL DETECTION TEST
As shown in the figure above, the CableSHARK will indicate whether or not there are load coils on the line. If
the Load Coil Detection Test indicates that there is a load coil on the line, the user can use the TDR test to
quickly locate and remove any load coils on the cable.
When finding the location of load coils with TDR, remember that the waveform will generally show a more
rounded appearance than an open at the location of a load coil. Loading coils come in two values: the H88
(88 mH), which is normally placed every 6000 ft apart, and the D66 (66 mH), which is normally placed every
4500 ft apart. Depending on the location in the section, load coil spacing is very particular – at 3000 feet
(914 m) or 6000 feet (1829 m) intervals for H88 load coils. Suspect a load coil if you see an open-like
reflection on the waveform at approximately 6000 feet (1829 m) from the TDR, although not all load coils
look the same. The first load coil is all that you will see, since the TDR’s signal cannot pass through a load
coil. Once you have found the first load coil, remove it and retest the cable.
At the completion of a test, the function button command selection at the bottom of the LOAD COIL TEST
RESULT screen consists of several options available to the operator for a LOAD COIL RX test. The
following are brief descriptions of each of the function button options:
Pressing the SAVE / UPLOAD button shows a pop-up window where the user is allowed to upload results,
and save results to internal memory or to external USB memory.
- CableSHARK P3 3
- VF / DSL Cable Qualifier 10
- Patent Information 11
- 1.2 Unpacking the CableSHARK 13
- 1000 ft (300 m) 22
- 4.1.1 The Front Panel 27
- 4.1.2 The Rear Panel 29
- 4.2 Powering the CableSHARK 33
- 5.1.1 Self Tests 37
- 5.2.2 Single-Ended Testing 39
- 5.2.3 End-to-End Testing 40
- 5.3.1 Saving Results 41
- 5.3.2 Recalling Results 43
- 5.4 Reference Masks 45
- 5.6 Bandwidth Requirements 50
- Section 6 Main Menu 51
- 6.2 Responder Mode 58
- 6.3 Recall Results 59
- 6.4 The System Setup Menu 59
- 7.2.1 Automatic TDR Test 65
- 7.2.2 Manual TDR Test 66
- 7.3 Frequency Response Tests 67
- 7.4.2 End-to-End DMT Test 69
- 7.5 Noise Tests 70
- 7.7 Load Coil Detection Test 71
- 7.8 Spectral Detective 72
- 7.10 Return Loss 73
- 7.12 4 Wire Xtalk 73
- 7.14 ADSL Auto Test 74
- 7.15 SHDSL Auto Test 75
- 7.16 VF Auto Test 76
- 7.17 Ground Resistance Test 77
- 7.19 K-Test 78
- 7.20 Ringer Detection 79
- 7.21 VF Tests 79
- 7.22 LoopMapper™ Tests 79
- CableSHARK 81
- FREQUENCY RESPONSE TEST SETUP 84
- 8.2.1 Setting up a TDR Test 89
- 8.2.2 Manual TDR Testing 95
- 8.2.3 Auto TDR Testing 101
- 8.2.4 TDR Application Hints 102
- CableSHARK P3 User Guide 103
- 8.3.1 Setting up a DMT Test 105
- DMT BITS PER 107
- (m/μS): 108
- 8.3.2 Running an ADSL Test 110
- DMT TEST RESULT 114
- 8.4..Noise Measurements 118
- 8.4.2 Running a Noise Test 124
- 00:00:00 125
- TO MEM 130
- TO USB 135
- 8.7.1 Setting up a DMM Test 142
- 8.7.2 Running a DMM Test 148
- 8.8.. 4-Wire Crosstalk Test 151
- 17.3 kHz to 2.208 MHz) 155
- > 100 M 157
- 8.10 LoopMapper™ 159
- 8.10.2 LoopMapper Testing 161
- 8.11.1 Auto Test Setup 168
- IGURE 8.11.1.3C – PHONE BOOK 174
- Central Office 185
- Customer 185
- IGURE 9.2D – ADSL AT CO SIDE 191
- 11.1..Running a SHDSL Test 199
- IGURE 12.1C – BATTERY CROSS 201
- IGURE 12.1.1.3A – RFL CABLE 203
- Black Red Green 204
- Yel low Blue Green 204
- Black Red Gnd 208
- 12.2 Running a RFL Test 210
- 12.3 RFL Hints 212
- + [ 0.0022 * ( T 213
- - 68°F ) * R 213
- - 20°C ) * 0.00393 * R 214
- Line card = not detected 222
- 15.1.3 Sending 3 Tone Slope 233
- 15.2.3 RX 3 Tone Slope 240
- 15.3 Noise Test 243
- 15.4 Impulse Noise Test 245
- 00:09:12 246
- 15.5 Power Influence 247
- SAVE/UPLOAD button 248
- 16.2 Setting up a K-test 249
- 16.3 Running the K-test 250
- 16.3.3 Running a Test 256
- A.1 Loop Topologies 259
- A.2 Attenuation Responses 261
- Transmitter Characteristics 272
- Transmitter Functions 272
- ± 50 ppm 275
- ± 1.0 dB typical 275
- ± 0.5 dB 277
- SHDSL Data Rate Test 278
- PSD Noise Measurement 278
- Longitudinal Balance Test 279
- DMM (Digital Multimeter) 279
- Isolation resistance 280
- Spectral Detective 280
- 4-Wire Crosstalk 280
- Visi-SHARK 282
- Appendix D Safety 283
- Appendix E Warranty 287
- Certification 288
- F.1 Software Policy 289
- F.2 Upgrading Software 289
- J.1 Installing the Software 295
- J.3.1 Running Visi-SHARK 296
- IGURE J.4.2B – SOCKET ERROR 301
- J.6.1 File Menu 305
- J.6.2 Screen Image menu 307
- J.6.3 New Connection Menu 310
- J.6.4 View Menu 311
- J.6.5 Window Menu 311
- Telecom Test and Measurement 321
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