050_316 Datasheet, PDF (6/15 Pages) Glenair, Inc. – PRODUCT BRIEF

050-316 Product Brief
PC Board Mount Dual-Transmitter
100 Mbps – 5 Gbps, MMF, 3.3V
FUNCTIONAL DESCRIPTION
Figure 2
Board Mount Dual-Transmitter Block Diagram
TRANSMITTER SECTION
Transmit Disable (TX1_Disable and TX2_Disable)
The transmitters accept a TTL and CMOS compatible transmit disable control signal input that shuts down the transmitter
optical output. A high signal disables the transmitter while a low signal allows normal dual-transmitter operation. Also laser
is disabled when TX Disable is open. In the event of a fault (e.g. eye safety circuit activated), cycling this control signal
resets the module. Host systems should allow a 10ms interval between successive assertions of this control signal.
Transmit Fault (TX1_FAULT and TX2_FAULT)
A catastrophic laser fault will activate the transmitter signal, TX*_FAULT, and disable the laser. This signal is an open
collector output (pull-up required on the host board). A low signal indicates normal laser operation and a high signal
indicates a fault. The TX*_FAULT will be latched high when a laser fault occurs and is cleared by toggling the
TX*_DISABLE input or cycling the power of the dual-transmitter. The transmitter fault condition can also be monitored via
the optional 2-wire serial interface (address A2, byte 110, bit 2).
Eye Safety Circuit
©2014 Glenair, Inc.
GLENAIR, INC.
www.glenair.com
REV: C
∙ 1211 AIR WAY
US Cage Code 06324
∙ GLENDALE, CA 91201-2497 ∙ TEL: [phone]
PAGE 6 of 15
Printed in USA
∙ FAX: [phone]
E-mail: [e-mail]