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EXFO FTB-7000 OTDR for FTB-200 v2 User Manual

Page 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