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About the STM-1 Electrical Interface Pod
About the STM-1 Electrical Interface Pod
Overview The HP E5123A STM-1 Electrical Interface Pod is a self-contained, plug-in
module. You use it in conjunction with the HP E5200A Broadband Service
Analyzer to test and analyze a system under test (SUT).
In the transmit direction, the interface pod
• automatically calculates and inserts Section/Regenerator Section BIP,
Line/Multiplexer Section BIP, and Path BIP
• maps the ATM cells into the Virtual Container (VC)
• automatically generates the framing pattern
In the receive direction, the interface pod
• uses the A1 A2 framing pattern to frame align the electrical signal
• applies frame descrambling
• carries out pointer processing to align to the VC
• detects line errors using the Section/Regenerator Section BIP,
Line/Multiplexer Section BIP, and Path BIP
• extracts ATM cells and passes them to the measurement system
Hot swap and
automatic
configuration
Use the “hot swap” feature to insert and remove the interface pod while
the analyzer’s power is switched on. The analyzer automatically detects
the insertion of the interface pod and configures itself accordingly.
Immediately after you connect the interface pod to the SUT, the analyzer
automatically configures the receive and transmit parameters according to
the signal it receives.
Operating modes The interface pod has four operating modes: full-duplex, transmit
loopback, receive loopback, and regenerator.
Components The interface pod is shipped with
• a Calibration Certificate
• this set up guide
Application The HP E5123A STM-1 Electrical Interface Pod requires an E5200A base
unit with Application Version number A.01.2 or greater.