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050-356 Datasheet(PDF) 7 Page - Glenair, Inc. |
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050-356 Datasheet(HTML) 7 Page - Glenair, Inc. |
7 / 16 page ©2015 Glenair, Inc. REV: 2 US Cage Code 06324 Printed in USA GLENAIR, INC. ∙ 1211 AIR WAY ∙ GLENDALE, CA 91201-2497 ∙ TEL: 818-247-6000 ∙ FAX: 818-500-9912 www.glenair.com PAGE 7 of 16 E-mail: sales@glenair.com 050-356 Product Brief PCB Mount CWDM Dual-Transmitter 100 Mbps – 2.5 Gbps SMF, 3.3V Eye Safety Circuit The Transmitters provide Class 1 eye safety by design and are compliant with US FDA CDRH AEL Class 1 and EN(IEC) 60825-1,2, EN60950 Class 1. The eye safety circuit continuously monitors optical output power levels and will disable the transmitter and assert a TX_FAULT signal upon detecting an unsafe condition. Such unsafe conditions can be created by inputs from the host board (Vcc fluctuation, unbalanced code) or faults within the module. FUNCTIONAL I/O The PC board mount dual-transmitter accepts industry standard differential signals such as LVPECL and CML within the scope of the SFP MSA. To simplify board requirements, transmitter bias resistors and ac coupling capacitors are incorporated, per SFF-8074i, and hence are not required on the host board. The module is AC-coupled and internally terminated. Figure 3 illustrates a recommended interface circuit to link the PC board mount dual-transmitter to the supporting Physical Layer integrated circuits. The PC board mount dual-transmitter interfaces with the host circuit board through twenty I/O pins identified by function in Table 7. The dual-transmitter high speed transmit and receive interfaces require SFP MSA compliant signal lines on the host board. The TX1_DISABLE, TX2_DISABLE, TX1_FAULT and TX2_FAULT require TTL lines on the host board (per SFF-8074i) if used. If an application chooses not to take advantage of the functionality of these pins TX1_Disable and TX2_Disable need to be tied to GND, TX1_Fault , TX2_Fault do not need to be connected. . |
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