The BC720 is a transmitter-receiver card enabling the transmission and reception of 4 independent GPIO signals plus 4 RS232 or RS422/485 level signals via fibre optic cable using two independent wavelengths. The 4 GPIO input signals are TTL level inputs with the 4 GPIO outputs provided via an isolated relay contact. The BC720 can also operate in mixed mode allowing RS232 to RS422/485 links to be established, thus eliminating the need for external mode converters. All Bluebell cards are designed to maintain maximum signal path integrity, providing excellent jitter-free optical transport. The BC720 is available in multimode and single-mode versions to suit any fibre application. The BC720 occupies a single slot in the BC100-3RU 19" rack-mount chassis which can accommodate up to 15 single-slot cards. This dual functionality allows transmission or reception of up to 30 video channels from a single 3RU chassis. Signal and card monitoring is achieved via SNMP monitoring in the BM101 network card. Alternatively, GP output alarms can be triggered via the BM100 module. For standalone applications, the BC720 can be housed in a robust individual enclosure. Specifications