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Local testing and operating sequence
Tests and Measurements
3-46
PN 8DG08136CAAA
Issue 1 March 2008
............................................................................................................................................................................................................................................................
Link tests in DWDM systems
Figure 3-14 Link test in DWDM system
a. Rx input power level check per each channel
Before connecting the line fiber between OMDX-A and OMDX-B, disconnect the
Rx fiber per each channel (between OMDX-A and each DWDM XFP, plugged on
each tributary unit). Check the Rx input power and, if necessary, insert a fixed
optical attenuator, whose value depends on the interface type; refer to
Chapter 4
,
“SFP and XFP modules optical characteristics” (p. 4-16)
. for interfaces/XFP
optical characteristics
b. Span 1 check
If the span loss is other than the one declared by the customer, please refer to the
project manager.
Station B PRX check: disconnect the fiber from the OMDX-B Line signal input,
connect it to the Power Meter and verify the compliance with the LDT. Reconnect
the fiber
Station A PRX check: disconnect the fiber from the OMDX-A Line signal input,
connect it to the Power Meter and verify the compliance with the LDT. Reconnect
the fiber
c. Span 2 check
Station B PRX check: disconnect the fiber from the OMDX-C Line signal input,
connect it to the Power Meter and verify the compliance with the LDT. Reconnect
the fiber
Station C PRX check: disconnect the fiber from the OMDX-D Line signal input,
connect it to the Power Meter and verify the compliance with the LDT. Reconnect
the fi
CH1
CH1
Pattern
Generator
Error
Detector
STM-N
STM-N
STM-N
STM-N
STM-N
STM-N
GbE
GbE
CH1
CH2
CH3
CH1
CH2
CH3
CM
DX
/1
CM
DX
/2
OAD
M
/1
OAD
M
/2
STATION A
STATION B
STATION C
SPAN 1
SPAN 2
CH2,CH3
Summary of Contents for 1850 TSS-320
Page 6: ... List of figures v i PN 8DG08136CAAA Issue 1 March 2008 ...
Page 8: ... List of tables v i i i PN 8DG08136CAAA Issue 1 March 2008 ...
Page 16: ... Safety rules Safety 1 4 PN 8DG08136CAAA Issue 1 March 2008 ...
Page 138: ... Other technical support services Technical Support A 14 PN 8DG08136CAAA Issue 1 March 2008 ...
Page 140: ... Glossary GL 2 PN 8DG08136CAAA Issue 1 March 2008 ...