907-Ecl (Sonar); Figure 4-4: 907-Ecl Media Converter Card - Focal 907 User Manual

907-0601-00 Rev. C
4.3

907-ECL (Sonar)

Card P/N
Config. Dwg.
Diagnostics:
The 907-ECL (Emitter Coupled Logic) is a single card that supports multiple high speed data formats typically
used by sonars. The card can be configured to support ECL and PECL (Positive Emitter Coupled Logic)
formats when SW1A and SW1B are OFF and SW2A is ON. In this configuration, the cards provide one
channel of single-ended or differential ECL/PECL throughput. The ECL/PECL signals must be between
30-155 Mbaud and have been suitably encoded for optical transmission with DC balance and sufficient
density of transmissions, such as that provided by 8B10B encoding.
For subsea applications, 907-ECL cards are typically connected to a sonar head at the remote end and the
sonar processing unit at the console end. Supported sonar devices include the Reson 81XX Series, and the
Kongsberg EM2000 and EM3000.
The ECL/PECL inputs and outputs are AC-coupled, 75 ohms. Cards may be modified to support 50 ohm
systems directly or external impedance matching pads may be used to convert 75 ohms to 50 ohms.
The 907-ECL card can be ordered as a standalone card (built with short PC/104 connector pins and a short
optical jumper from the SFP transceiver to the optical ST/PC bushing) or as a CWDM stacking version, for
integration with a 907 multiplexer or other devices. Stacking versions have long PC/104 connector pins and a
built-in CWDM installed on the optical bushing, as shown in Figure 4-4.
The 907-ECL cards are available in pressure tolerant versions with a 6000 psi rating.
Focal Technologies Corp.
907-0019-XX
907-2012-02
907-DIAG-E Compatible (SFP only)

Figure 4-4: 907-ECL Media Converter Card

Model 907 Video/Data Multiplexer – User's Guide
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