DD8RP
7 / 15
rev. 1.0
Device Description
Congratulations on your purchase of a DD8RP Repeater / Media Converter Module. The DD8RP will quickly
convince you with its advantages and will facilitate your day-to-day work.
The DD8RP features two possible applications. It can operate as a repeater in an Optocore network, if distances
between devices are longer than 700 m and the standard multimode fiber cables are used. Or it can function as
media converter from multimode to monomode fiber connections and vice versa. The four repeaters / media
converters work protocol independent, they can be implemented in networks based on protocols such as Ethernet
as well. The unit is specially designed for low power consumption and provides a DC 12 V power supply. Battery
packs can supply the power, if no mains supply is available. This can immensely simplify outdoor applications.
The flexibility to use the DD8RP as repeater and converter is achieved by receptacles for SFP (Small Form-factor
Pluggable) optical transceivers. Eight receptacles form the four independent LINK interfaces; each LINK can
consist of two SFPs with dual LC type connectors. The function of a LINK as repeater or converter depends on
the implemented optical transceiver. This allows the configuration exactly appropriate for the application. E.g. one
LINK may extend the distance between two Optocore devices in an OPTOCORE
®
OPTICAL DIGITAL
NETWORK, while the other LINKs are used in totally different networks with non-Optocore protocols.
LEDs on the front give detailed information about the status and operating state of each LINK. They indicate if a
malfunction of any connection could influence the high quality data transmission.
Two power supplies with automatic switchover and individual connectors provide a high grade of safety. The first
power supply is for AC mains input including the unique 400 V tolerant Optocore design. An over-voltage-monitor
lights the OVP (Over Voltage Protection) status LED during an over voltage condition, simultaneously
suppressing the normal function of the device. The second power supply is for DC 12 V, equipped with a male 4-
pin connector. The DC power supply is compatible with battery packs, UPSs (Uninterruptible Power Supply) or
standard AC adapters.
Due to SMD production the DD8RP fulfills the demand of highest digital standards occupying only one rack unit of
a 19" rack. The FPGA (field programmable gate array) based concept of the internal logic circuitry permits
updating of the hardware via the units remote ports, ensuring a continual state-of-the-art device.
