Exfo FTB-7000 OTDR for FTB-200 v2 Manual de usuario Pagina 333

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Index
OTDR 319
N
naming trace automatically................... 24, 78
native trace format.................................... 178
noise area, searching................................. 154
non-reflective event, averaged loss ... 134, 213
number
in events table ..................... 113, 209, 210
of the event ......................... 113, 209, 210
O
opening
a single-wavelength trace file .............. 197
multiwavelength trace file ................... 197
opening trace file ...................................... 159
operating light source ............................... 189
optical return loss. see ORL
ORL threshold...................................... 53, 247
ORL, module required for calculations ...... 175
OTDR
basic theory ............................................. 8
definition................................................. 1
file compatibility between versions...... 178
internal components................................ 9
using as laser source............................ 189
OTDR software
launch level.......................................... 271
P
parameters
Advanced mode..................................... 42
helix factor............................................. 43
IOR......................................................... 43
Rayleigh backscatter coefficient............. 43
Template mode...................................... 62
trace display .......................... 88, 126, 241
pass/fail ..................................... 110, 111, 206
pass/fail message display............................. 55
pass/fail test
disabling ........................................ 54, 248
enabling......................................... 54, 248
when to perform.................................... 54
photodetector ............................................... 8
Pos. in event table ............................. 209, 210
position, event................................... 209, 210
precision, trace ............................................ 49
printing reports ......................................... 184
product
identification label ............................... 284
specifications ....................................... 291
pulse
dial......................................................... 45
in Trace Info. tab.................................. 134
setting width ......................................... 45
width unit ............................................ 240
pulse/time in Trace Info. tab ...................... 213
R
RBS (Rayleigh backscatter)
description............................................... 9
in Trace Info. tab.................. 135, 214, 252
modification ................................ 133, 252
obtaining ............................................... 43
setting ................................................... 43
RBS level measurement event .................... 166
re-analyzing a trace ........................... 151, 215
recalibration .............................................. 278
reference trace
parameters............................................. 62
selection................................................. 74
Refl. column in events table .............. 114, 210
reflectance
attenuation .......................................... 174
detection threshold...... 135, 148, 214, 253
modification ................................ 138, 231
of event ....................................... 114, 210
of non-reflective events........................ 174
source of inaccurate measurements....... 44
threshold ....................................... 53, 247
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