The Agilent J4227A DWDM Short Reach Receiver Module is a register-based C-size double slot VXI modules. It has four optical Input ports, each port can receive optical signals with wavelengths between 1200 nm and 1600 nm. It can detect alarms (LOS, OOF, LOF, AIS-L, and MS-AIS), make BER measurements and capture the J0 trace message in a 2.488 Gb/s, 1.244 Gb/s, 622 Mb/s, or 155 Mb/s concatenated signal carrying PRBS payloads. It can detect B1, B2 and Bit errors. These errors can then be presented to you as an error count or as an error ratio. Error counting is inhibited when alarm conditions occur. For example, B1 and B2 error counting is inhibited during a LOS or LOF condition, and Bit Error counting is inhibited during a LOS, LOF or Pattern Sync Loss condition.
