The SDH Access Tester application
Page 80 Acterna ANT-5
Remember: Connect an external optical attenuator to the optical Rx port as care must
be taken not to connect a long-haul (high power) transmitter directly to the receiver,
since this can overload or even damage some receiver modules.
Also, included in this build release are the following features:
• Optical Power Measurement
• PECL NRZ STM monitor port
• E1 Hi-Z input
• PDH T1 Interface
4.22.2 Optical Power Measurement
To identify optical level problems, the
optical power measurement measures
the received optical signal level to a
resolution of 1 dBm with an accuracy
of +/- 3dB. In this example, an Optical
Level of –14dBm has been received.
4.22.3 PECL NRZ STM monitor port
With the Rate set to STM-16 NRZ signals can
be monitored at the electrical monitor point
without the need for optical spitters.
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