Receiving A Message; Optical Return Loss Meter (Optional) - EXFO FOT-920 MaxTester Manuel D'instructions

O T T
PTICAL EST OOLS
2SWLFDO#5HWXUQ#/RVV#0HWHU#+RSWLRQDO,
4.4.2

Receiving a Message

:KLOH#\RX#WHVW/#LI#\RXU#)270<53#UHFHLYHV#D#PHVVDJH#WKURXJK#LWV#
T #SRUW/#LW#ZLOO#HPLW#D#VKRUW#EHHS/#DQG#WKH#UHFHLYHG#PHVVDJH#
F T
AS ES
ZLOO#DSSHDU#RQ#WKH#VFUHHQ1#-XVW#FKRRVH#
\RX#FKRRVH#
6HQGLQJ#D#0HVVDJH#RQ#SDJH 708,#VR#\RX#FDQ#UHSO\#WR#WKH#PHVVDJH#LI#
QHHGHG1
1RWH= 7KH#)270<53#FDQ#UHFHLYH#PHVVDJHV#VHQW#IURP#DQ#)7%06<53#+0DLO%R[#IHDWXUH,1
4.5

Optical Return Loss Meter (optional)

%HIRUH#\RX#WDNH#DQ\#25/#PHDVXUHPHQW/#\RX#VKRXOG#SHUIRUP#D#ORRSEDFN#UHIHUHQFH#
+VHH#/RRSEDFN#5HIHUHQFLQJ#0HWKRG#RQ#SDJH 605,1#7KH#RSWLRQDO#25/#PHWHU#WRRO#
PHDVXUHV#25/#DW#WKH# F
PHQX/#FKRRVH#
,I#WKH#)270<53#RIIHUV#PRUH#WKDQ#RQH#VRXUFH#ZDYHOHQJWK/#\RX#FDQ#WRJJOH#EHWZHHQ#WKH#
DYDLODEOH#VRXUFH#ZDYHOHQJWKV#E\#FKRRVLQJ#λ1
4.5.1 ORL Zero Measurement
7KH#25/#]HUR#PHDVXUHPHQW#HOLPLQDWHV#WKH#HIIHFWV#RI#EDFN#UHIOHFWLRQV#EHIRUH#WKH#SRLQW#
RI#WHUPLQDWLRQ1#,W#UHTXLUHV#WKH#ILEHU#WR#EH#´WHUPLQDWHGµ1#:UDSSLQJ#WKH#ILEHU#DW#OHDVW#43#
WXUQV#DURXQG#WKH#LQFOXGHG#PDQGUHO#SURYLGHV#D#YDOLG#WHUPLQDWLRQ1
1RWH= $Q#25/#]HUR#PHDVXUHPHQW#LV#RQO\#YDOLG#IRU#25/#PHDVXUHPHQWV#SHUIRUPHG#DW#
WKH#VDPH#ZDYHOHQJWK1#7R#PHDVXUH#25/#DW#DQRWKHU#ZDYHOHQJWK/#\RX#PXVW#ILUVW#
SHUIRUP#DQ#25/#]HUR#PHDVXUHPHQW#DW#WKLV#ZDYHOHQJWK1
4-6
/#WKH#)270<53#DFFHVVHV#WKH#PHVVDJH#IHDWXUH#+VHH#
2.
T #SRUW1#7R#DFFHVV#WKH#25/#PHWHU#WRRO/#IURP#WKH#0DLQ#
T
AS ES
1
25/
ORL meter
operating wavelength
#WR#FOHDU#WKH#GLVSOD\1#$IWHU#
2.
ORL value
FOT-920