
............................................................................................................................................................................................................................................................
Point-to-point measures list and operating sequence
Tests and Measurements
3-62
PN 8DG08136CAAA
Issue 1 March 2008
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Test Bench
Figure 3-20 Optical “line port” link margin
Procedure
STATION-A
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1
Connect the pattern generator output to the STM-N port input and the pattern generator
input to the STM-N port output; all connections must be made on the ODF.
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2
Connect the Rx optical line cable to a variable optical attenuator with attenuation equal to
zero; connect the other side of the variable optical attenuator to the ODF.
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3
Preset the instrument according to the port type under test, and send a fixed PRBS
sequence.
STATION-B
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4
On the ODF, make a loop on the STM-N concerned with point-to-point connection.
1850TSS
ODF
Station - A
Station - B
VARIABLE
1850TSS
STM-N
STM-N
STM-N
STM-N
ODF
ODF
loop
port
port
port
port
ERROR
DETECTOR
PATTERN
GENERATOR
ODF
ATTENUATOR
RADIOMETER
C.T.
RX line cable
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 ...