©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 10 of 16

E-mail: sales@glenair.com

050-356 Product Brief

PCB Mount CWDM Dual-Transmitter

100 Mbps – 2.5 Gbps SMF, 3.3V

Predictive Failure Identification

The predictive failure feature allows a host to identify potential link problems before system performance is impacted. Prior

identification of link problems enables a host to service an application via “fail over” to a redundant link or replace a

suspect device, maintaining system uptime in the process. For applications where ultra-high system uptime is required,

the PCB mount Transceiver provides a means to monitor two real-time laser metrics associated with observing laser

degradation and predicting failure: average laser bias current (Tx_Bias) and average laser optical power (Tx_Power).

Compliance Prediction

Compliance prediction is the ability to determine if an optical transceiver is operating within its operating and

environmental requirements. The PCB mount Transceiver provide real-time access to transceiver internal supply voltage

and temperature, allowing a host to identify potential component compliance issues. Received optical power is also

available to assess compliance of fiber cable plant and remote transmitter. When operating out of requirements, the link

cannot guarantee error free transmission.

Fault Isolation

The fault isolation feature allows a host to quickly pinpoint the location of a link failure, minimizing downtime. For optical

links, the ability to identify a fault at a local device, remote device or cable plant is crucial to speeding service of an

installation. PCB mount Transceiver real-time monitors of Tx_Bias, Tx_Power, Vcc, and Temperature can be used to

assess local transceiver current operating conditions.

Component Monitoring

Component evaluation is another use of the PCB mount Transceiver real-time monitors of Tx_Bias, Tx_Power, Vcc, and

Temperature. Potential uses are as debugging aids for system installation and design, and transceiver parametric

evaluation for factory or field qualification. For example, temperature per module can be observed in high density

applications to facilitate thermal evaluation of systems that incorporate this PCB mount transceiver

Required Host Board Components

A power supply noise rejection filter as describe in SFP MSA is required on the host PCB to meet data sheet

performance. This is filter incorporates an inductor which should be rated to

400 mADC and 1 Ω series resistance or

better. It should not be replaced with a ferrite. The required filter is illustrated in Figure 4. Also, the host PCB for the PCB

mount

transceiver requires 4.7 K to 10 KΩ pull-up resistors for TX_FAULT,SCA and SDL lines.