Product; Main Characteristics - RACOM RAy3 User Manual

Product

1. Product

1.1. Main characteristics

RAy3 microwave units work as a point-to-point link in a full duplex setting with transfer speeds of up
to 1002 Mbps.
Supported are 2 license-free bands 17 GHz (17.10 – 17.30 GHz) and 24 GHz (24.00 – 24.25 GHz).
Bandwidth can be configured from 3.5 up to 112 MHz, independently for Tx and Rx. Modulation can
be fixed or adaptive and can be adjusted from QPSK to 4096QAM. QPSK modulation could be on the
fly (without data loss) strengthened for higher receiver sensitivity by extremely robust FEC – such
modulation is marked as QPSK-S (S means "strong"). RAy3 microwave links operating in 17 and 24
GHz bands can also be operated as a Short Range Device (SRD).
This link is formed by two RAy units, each equipped
by its own parabolic antenna and accessories to be
fully operational.
Hardware concept
RAy product line has been designed to have minimum
possible number of hardware variants. Upgrade of
functionality does not result in on-site hardware
changes– everything is done by activating software
feature keys (see Section 1.7, "Ordering codes" and
Chapter 5, Configuration).
HW models are determined only by frequency bands,
because both RAy units have identical hardware.
Transmitting and receiving channels are freely defined
by software and technically separated from each other
by cross polarization.
Cross polarization means that one side of the link
uses one polarization for transmission (e.g. horizontal) and the opposite polarization for receiving (e.g.
vertical). The other side of the link is turned by 90°. Therefore it transmits and receives using opposite
polarization with respect to the second unit. Practical result for users is that RAy units for 17 and 24
GHz must be mounted with reverse polarity on both ends of the link.
Note
All units for selected band are hardware identical. Default factory settings for each RAy in the
pair use different channels for L and U unit, so the link could be established by using default
radio parameters.
Ethernet concept
RAy links are transparent for IP and UDP Ethernet traffic. Practically all protocols pass through including
MPLS, RSTP (BPDU frames) and many others, except following:
• Management packets targeted for RAy units itself
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Fig. 1.1: RAy3 – Microwave link
RAy3 Microwave Link – © RACOM s.r.o.