Product

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1. Product

1.1. Main characteristics

RAy2 microwave units work as a point-to-point link in a full duplex setting with transfer speeds of up to 360 Mbps. Supported are 2 license-free bands (17 and 24 GHz) and 3 licensed bands (10, 11 and 18 GHz). Bandwidth can be configured from 1.75 up to 56 MHz. Modulation can be fixed or adaptive and can be adjusted from QPSK to 256QAM. RAy2 microwave links operating in 17 and 24 GHz bands can also be operated as a Short Range Device (SRD).

The link is formed by two RAy units, each equipped by its own parabolic antenna and accessories to be fully operational.

RAy2 – Microwave link

Fig. 1.1: RAy2 – Microwave link


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 except installing a WiFi module – everything else 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 and sub-bands and by a frequency range for RX and TX channels:

  • Licensed bands (10, 11 and 18 GHz) require one RAy unit (labeled L) to transmit in the Lower and receiving in the Upper part of the band. The other unit (labeled U) is operating vice versa. This difference is realized by HW, thus L + U models are necessary for each band (and sub-band). Those units use single polarization only.

  • License-free bands (17 and 24 GHz) are designed differently and both RAy units have identical hardware. Transmitting and receiving channels are freely defined by software and technically separated from each other by cross polarization.
    NOTE: Even all units are hardware identical, default factory settings for each RAy in the pair use different channels for L and U unit (letters L or U are labeled on each unit inside yellow ring below connector flanges), so the link could be established without reconfiguration of radio parameters.

Cross polarization (used only for RAy operating in 17 and 24 GHz bands) 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°. It therefore transmits and receives using opposite polarization with respect to the other unit. The practical result for users is that RAy2 units for 17 and 24 GHz must be mounted with reverse polarity on both ends of the link.

[Note]Note

RAy units for 10, 11 and 18 GHz are all mounted with the same polarization on both ends of the link.

1.2. Mechanical interfaces

1.2.1. Antenna waveguide

Waveguide pivot

Fig. 1.2: Waveguide pivot


RAy2 link requires the use of external parabolic antenna for each RAy unit – both for physical mounting as well as for the wireless transmission itself. Parabolic antennas from different producers are available.

Radio connection between the antenna and RAy unit is ensured by the waveguide on RAy unit (located across the holder), where well lubricated antenna waveguide pivot nicely fits in.

1.2.2. Unit mounting

RAy2 Microwave link – antenna and RAy unit

Fig. 1.3: RAy2 Microwave link – antenna and RAy unit


The RAy unit is mechanically fixed to the antenna by 4x M8 screws (one per each side of Ray unit). Installation and basic adjustment of the antenna is described in the Section 4.2, “Antenna mounting”. Attaching RAy unit to it by 4x M8x30 (Allen) screws delivered with each antenna or each mount kit is described in the Section 4.3, “RAy unit mounting”. For adjusting the exact antenna direction see Section 4.7.2, “Directing antennas” .

1.2.3. Grounding screw

Grounding screw

Fig. 1.4: Grounding screw


Grounding screw is used for a proper grounding of the RAy unit, which is necessary for its function (ensured by galvanic connection to the mast through a grounding cable).

One M8 screw (with standard 6-edge head) is delivered with each RAy unit. Grounding screw has two possible positions (two holes) to be mounted in. Those are located near the left and right fixing screws of the RAy unit and both are marked by a yellow grounding symbol and both are equivalent (second hole remains unused). For more information about unit grounding see Section 4.3.3, “RAy unit grounding”.

[Note]Note

Grounding screw function is to ensure proper grounding of the RAy unit (by a grounding cable), not for mechanical fixing of the unit.

1.3. User interfaces

Each unit is equipped with the following interfaces (on top of antenna waveguide described above):

ETH1+POEGigabit metallic Ethernet port. This port is capable of powering the unit with any Power over Ethernet (PoE) power source working according to IEEE 802.3at standard.
Passive PoE from 40 to 60 V is also supported.
ETH2Slot for user exchangeable SFP module. A wide range of fibre optics Ethernet modules is available. Both single or dual mode transceivers can be used. An SFP module with metallic RJ45 interface can also be used.
The SFP LED (located on SFP, just next to connectors) is controlled by SFP module. Its function is specific for each SFP module. The typical behavior is an indication the received signal from the optical or metallic link to be within operational range.
PDC power connector, from 20 to 60 V.
HW button for service purposes: Internal backup or Factory settings, see Section 5.6.1, “Maintenance”.
SUSB service connector for USB/WiFi or USB/Eth adapters.
See Section 1.4, “Service interfaces”.
RSS voltage output connectors (for example 0.547 V means RSS –54.7 dBm).
Connectors

Fig. 1.5: Connectors


[Note]Note

A set of all necessary bushing parts are delivered with each RAy unit – see a description of this standard basic accessory ACS-RAy2. Additional bushing options for installation of longer connectors or other equipment are available as well. For bushings installation see Section 4.4, “Connectors assembly and disassembly”.

All accessories offered by RACOM for proper installation of the complete RAy link setup (including proper grounding) are tested for compatibility with RAy unit. See accessories listed in overview and described in details.

[Important]Important

All bushings and plugs (including the original plugs in the flanges) must be fitted with O-rings and carefully tightened. Otherwise, the unit is not protected against moisture intake through connectors and can not offer guaranteed functionality.

1.3.1. RJ45 Ethernet connector ( ETH1+POE )

RJ45 Ethernet connector

Fig. 1.6: RJ45 Ethernet connector


RJ45 socket connector marked „ETH1+POE“ is a standard 10/100/1000Mbps metallic Ethernet port. One plastic RJ45 plug for CAT5e and CAT6 cables is delivered with each RAy unit, ready to be punched to an Ethernet cable.
NOTE: Higher quality and CAT7 compatible RJ45 plugs are available from RACOM as well – see for example item CON-RJ45-CAT7.

This port can be optionally used for power sourcing the unit by PoE (Power over Ethernet). Both an active PoE power supply (compliant with at least IEEE 802.3at standard known also as „PoE plus“) and a passive PoE power supply (with voltage range 40-60 V) are supported.

Technical parameters of PoE power input:

  • Supported voltage range is 40 to 60 V, distances up to 100 m. Internal RJ45 pins wiring is:

    • (V+) … 1,2,4,5

    • (V-)  … 3,6,7,8

    It is possible to use all 8 pins or only 4 pins. Use:

    • either   4,5 (V+) and 7,8 (V-)

    • or         1,2 (V+) and 3,6 (V-)

    • or both simultaneously

More information about usage and installation of available power options can be found in Section 4.5, “Grounding” and Section 4.6, “Power supply”.

[Note]Note

The microwave unit does not support a combination of both power supplies. Only one power supply – DC or PoE – can be connected at any one time.

1.3.2. SFP slot ( ETH2 )

SFP slot

Fig. 1.7: SFP slot


„ETH2“ is a standard SFP slot for 1000Mbps Ethernet SFP modules, user exchangeable. Both fibre optic and metallic Ethernet SFP modules are supported. For optical both single and dual mode fibre optics Ethernet modules (= 2 or 1 fibers) can be used. CSFP modules are not supported. RACOM offers all mentioned types of SFP modules, tested to be RAy compatible as a standard accessory.

The SFP status LED is located just next to the slot. It is controlled by SFP module. Its function is specific for each SFP module. The typical behavior is an indication the received signal from the fibre optic or metallic link to be within operational range.

[Important]Important

It is strongly recommended to use a high quality SFP module. The SFP modules listed in Accessories are thoroughly tested by RACOM and are guaranteed to function with RAy2 units. It is possible to use any other SFP module, but RACOM cannot guarantee they will be completely compatible with RAy2 units.

1.3.3. DC connector ( P )

Power supply connector

Fig. 1.8: Power supply connector


Slot „P“ is named according to “Power” and it contains a 3 pins DC power source connector (see picture on right). HW button for service purposes is situated next to the DC connector – discussed in section Section 1.4.5, “HW button ( P )” .

Supported voltage range is 20 to 60 V, polarity is documented on the Fig. 1.8, “Power supply connector”. RAy internal DC power circuits ensure galvanic separation. Ground pin is connected with the RAy chassis (grounded by Grounding screw to the mast) and it can be used for grounding of DC cable (either positive or negative wire or the shield).

One 3-pin power plug with screw-terminals is delivered with each RAy unit (see ACS-RAy2), ready to be mounted to a customer DC cable. The connector is designed for electric wires with a cross section up to 1.5 mm2 (AWG 14).

More information about usage and installation of DC power sourcing can be found in section Section 4.6, “Power supply” .

[Note]Note

The microwave unit does not support a combination of both power supplies. Only one power supply – DC or PoE – can be connected at any one time.

1.4. Service interfaces

1.4.1. USB connector ( S )

USB connector

Fig. 1.9: USB connector


Slot „S“ is shortcut of “Service”. It contains system connectors – standard USB port and a pair of contacts for RSS voltage output (red + green ones).

USB-A port is designed for access to RAy management through USB/WiFi adapter or USB/Eth adapter plugged in to. More information about installation and configuration of available adapters can be found in Quick Guide and in Section 5.4.3, “Service access” (part “USB Accessories”).

[Note]Note

Only RACOM recommended adapters are supported. See section Access adapters.

1.4.2. Service WiFi – optional (using USB „S“)

USB WiFi adapter

Fig. 1.10: USB WiFi adapter


RAy2 unit can be equipped with the service WiFi interface as an option. It can be used solely for unit management (no user data can be transmitted using this WiFi connection).

Optional WiFi module (ordering code OTH-USB/WIFI-W2) can be inserted in to the slot “S” USB connector (see chapter Section 1.4.1, “USB connector ( S )” for more details). Management of the WiFi port is described in Section 5.4.3, “Service access” (part “USB Accessories”).

[Note]Note

Only RACOM recommended adapters are supported. See section Access adapters.

1.4.3. Service Ethernet – optional (using USB „S“)

Ethernet adapter

Fig. 1.11: Ethernet adapter


RAy2 unit can be equipped with the service Ethernet interface as an option. It can be used solely for unit management (no user data can be transmitted using this Ethernet connection).

Optional Eth adapter (ordering code OTH-USB/ETH-XA) can be inserted in to the slot “S” USB connector (see chapter Section 1.4.1, “USB connector ( S )” for more details). Management of this Ethernet port is described in Section 5.4.3, “Service access” (part “USB Accessories”).

[Note]Note

Only RACOM recommended adapters are supported. See section Access adapters.

1.4.4. RSS voltage contacts ( S )

RSS voltage contacts

Fig. 1.12: RSS voltage contacts


RSS voltage output connectors are located in slot „S“ aside USB connector. This pair of contacts (red + green ones) alows to connect a voltmeter to the RAy unit and measure RSS value transformed to the voltage output.

RSS (Received Signal Strength) is a basic parameter used for directing antennas to the optimal direction. RSS output voltage is calibrated to be proportional to actual RSS dBm (for example 0.547 V means RSS –54.7 dBm). Thus a standard digital voltmeter allows to see RSS value in a digital form interactively during the antenna alignment. More information about RSS voltage output usage is in Section 4.7.2, “Directing antennas” (part “Voltmeter”) together with several alternative ways to get this value by other methods.

1.4.5. HW button ( P )

Hardware button

Fig. 1.13: Hardware button


It is located in a small hole next to DC connector. It can be pushed by any tiny blunt thing with the diameter up to 2 mm. Its length has to reach about 7 mm in to the hole. (It can be ball pen cartridge – both ends work on the thin one, match, toothpick, etc.).

[Important]Important

Usage of very sharp things for pushing the HW button (like needle, edge clip etc.) may destroy the contact inside RAy unit! Such a button destruction is not covered by warranty.

The button supports multiple functions, which are activated dependent on the state of the unit when the button is pushed and the length of the push:

Action to be performedUnit statusButton pushedSYS LED indication
Restore
internally temporary stored
customer settings
Normal
operation
For 5 secondsFlashes Green
Applying
Factory settings

to Local unit, then reboot
Out of powerPushed before power on, released after SYS LED stops flashing redFlashes Red (delayed after power on, for a duration of 5 seconds)
Entering the
Service mode.
(Please, exit this mode
by powering off the unit)
Out of powerPushed before power on, released when SYS LED starts flashing redFlashes Red (delayed after power on)
[Note]Note

Those actions and their use are described in detail in Section 5.6.1, “Maintenance”.

1.5. Status LEDs

Status LEDs ( AIR - SYS - ETH )

Fig. 1.14: Status LEDs ( AIR – SYS – ETH )


Tab. 1.1: Meaning of LED status indicators

DiodeColourStateFunction
ETHGreen
ETH1, (10/100/1000)
Flashing irregularlyLink Activity
Permanently litPort without operation (Auto Negotiat. was carried out)
Flashing regularlyAuto Negotiation in progress
Yellow
ETH2,
(1000)
Flashing irregularlyLink Activity
Permanently litPort without operation (Auto Negotiat. was carried out)
Flashing regularlyAuto Negotiation in progress
SYSOrange
(red+green)
Permanently litUnit is starting
GreenPermanently litSystem OK
Flashing regularlyHW button pushed on the unit running
Factory defaults in progress
Firmware writing in progress. DO NOT POWER OFF !!
RedPermanently litSerious system error
Flashing regularlyHW button pressed during unit start
(HW button continuously pressed)
Flashing intermittentlyUnit in the service Linux
AIRGreenPermanently litLink: OK
Flashing intermittentlyLink: Connecting
RedPermanently litLink: Single

  • Flashing regularly            500 ms on / 500 ms off

  • Flashing intermittently     50 ms on / 950 ms off

  • Flashing irregularly          by passing frames

 

1.6. Basic technical parameters

1.6.1. Communication unit RAy2

Outer size

  • 244 x 244 x 157 mm

Weight

  • RAy2-10 — 2.8 kg

  • RAy2-11 — 2.8 kg

  • RAy2-17 — 2.5 kg

  • RAy2-18 — 2.7 kg

  • RAy2-24 — 2.5 kg

Basic technical parameters like identification of the HW model, working frequency, maximum Tx power, requirements for power supply, most important certifications, etc. are visible on RAy Production label. All technical parameters are stated in detail in Chapter 9, Technical parameters .

RAy2 links are transparent for IP and UDP Ethernet traffic (all protocols passes through including MPLS and many others) except following packets:

  • Management packets targeted for RAy2 units itself

  • Special packets for protocols explicitly mentioned in this manual which are somehow processed by RAy2 units (like PTP)

  • Packets which did not went through and were discarded due to capacity limitation of the link (and QoS settings).

1.6.2. Production label

The label contains name, bar code record, CE + FCC label, etc.:

  • Type – RAy2 product line identification (for details see Code structure )

  • Code – detailed identification of the unit type (for details see Code structure )

  • S/N – serial number, MW link consists of two separated units with two different serial numbers

  • QR code – www link to the latest version of the User manual

  • RF Power – maximum output power

  • TX, RX freq – range of working frequency

  • PoE – power supply characteristics

  • GND – meaning of 3 DC power source contacts (located next to the production label)

 

Example of production label - RAy2-18

Fig. 1.15: Example of production label – RAy2-18


Example of production label - RAy2-24

Fig. 1.16: Example of production label – RAy2-24


The structure of Type and Code printed on RAy2 Product label is:

 Trade name + Gen.RAy2
 BandFrequency band in GHz
Possible values: 10, 11, 17, 18, 24
 Varoptional designation of product variant
Possible values:
  none
  R – reduced RF output power -30 to -15 dBm (for RAy2-24 only)
 FRQTx frequency position (only for 10, 11 and 18 GHz)
Possible values:
  L – unit transmits on lower part of the band
  U – unit transmits on upper part of the band
Note: For 17 + 24 GHz RAy2 models is the L/U indication not present in the Code, but it is marked by a yellow circle label nearby Ethernet slots.
 Sub-bandSub-band (only for 10, 11 and 18 GHz)
Possible values: A, B, C – see RAy2 datasheet for frequencies covered by each sub-band.
 TypeSpecific product type for which type approvals like CE, FCC etc. are issued.
Possible values: RAy2-10, RAy2-11, RAy2-17, RAy2-18, RAy2-24
 CodeDetailed HW identification of the unit.
Note: SW keys and Optional accessories are not HW dependent and can be ordered later on, so they are not printed on Product label.
[Note]Note

For 10, 11 and 18 GHz a link has to consist from a pair of ‘L’ and ‘U’ units (L/U of each unit is always indicated within the last part of the Code).

For 17 and 24 GHz a link should also consist from a pair of ‘L’ and ‘U’ units (L/U of each unit is always indicated by a yellow circle label nearby Ethernet slots), but it is not mandatory (HW for L and U unit is identical and L/U settings could be assigned by SW).

Using L + U pair ensures all default settings of both units match each other (including proper IP addresses as described in this manual). It ensures the link is automatically established after factory defaults (to simplify initial setting of the unit).

1.6.3. Supplied antennas

RAy2 units are ready for direct mounting to:

Individual datasheets are accessible here.

Tab. 1.2: Overview of LEAX-RAy antennas

 10, 11 GHz 17, 18 GHz 24 GHz
diametergaindiametergaindiametergain
0.3 m30.1 dBi0.3 m34.7 dBi0.3 m36.9 dBi
0.6 m35.2 dBi0.6 m39.7 dBi0.6 m42.0 dBi
0.9 m38.5 dBi0.9 m43.5 dBi0.9 m45.4 dBi
1.2 m41.0 dBi1.2 m45.2 dBi1.2 m47.9 dBi

Tab. 1.3: Overview of Jirous antennas

 10, 11 GHz 17, 18 GHz 24 GHz
diametergaindiametergaindiametergain
0.18 m22.6 dBi
0.38 m29.0 dBi0.4 m34.8 dBi0.4 m36.8 dBi
0.65 m35.5 dBi0.68 m38.6 dBi0.68 m41.7 dBi
0.9 m37.5 dBi0.9 m41.5 dBi0.9 m44.0 dBi
1.2 m41.0 dBi1.2 m44.6 dBi1.2 m46.6 dBi

Andrew (Class 2 or 3 or 4) or traditional Arkivator antennas or antennas from other suppliers can also be used, but require an antenna mounting kit. Flexible waveguide is a general-purpose option for any antenna usage. Contact us for available types and details.

1.7. Ordering codes

All RAy2 models mentioned in this manual have their unique ordering codes described in following chapters. Available are also capacity keys, feature activation keys and accessories necessary to reach expected functionality of the link. All ordering codes are discussed in detail at RACOM web, and are available for purchase at RACOM E-shop.

[Note]Note

Please your supplier to ensure completeness of your product delivery for the individual link situation, applicable spectrum regulations, local security requirements, type of power sourcing, grounding, etc.

[Important]Important

RACOM does not have any responsibility for improper use of any offered device. It is customers full responsibility to check technical parameters of all ordered items and to use and configure them in accordance with their purpose. It is also customers full responsibility to respect all requirements applicable at the site of installation.

1.7.1. RAy units

There are several different ordering codes for each HW model of RAy2 units. They differ in some properties like working frequency, encryption HW acceleration, factory defaults and limitations built in to units in the factory like limitation of Tx power or prevention to use any form of encryption (not changeable later by license keys or by a user).

The structure of RAy2 ordering code starts with detailed identification of the HW model printed on Product label. RAy2 microwave link has to be ordered together with SW feature key for initial capacity. It appears in ordering code in brackets just after HW variant printed on unit Product label as item „Code“. Those could be added, erased or changed by a user later on. For detailed description of the ordering code structure see RACOM web.

[Note]Note

The proper pair of Lower (L) and Upper (U) units has to be selected when ordering the microwave link for 10, 11 or 18 GHz. Unit marked with L is set for transmission on lower frequency (and receive on higher one), while unit marked with U is set for transmission on higher frequency (and receive on lower one). Those settings are built in to HW and can’t be changed.

For 17 and 24 GHz RAy2 models the unit pair is always shipped with 1x L and 1x U indication. Those units have identical HW for lower (L) and upper (U) unit and Tx default can be changed in the unit management.

1.7.2. Capacity keys

RAy units allow to pay only for purchased transmission capacity (pay as-you-grow concept). Activation keys could be purchased together with the unit or later at RACOM E-shop. Each key is generated for specific S/N of the unit and the purchased capacity. It unlocks all combinations of channels and modulations up to the purchased capacity. Once installed, a specific feature or function of the unit is allowed. Feature keys could be erased or upgraded. See Configuration / Feature keys for more details.

Several types of SW feature key are available for RAy units:

  • Bundled capacity (ordered together with RAy units – see previous chapter)

  • Separately purchased capacity feature keys (see below)

  • Upgrade capacity feature keys (see below)

Maximum transmitted data capacity can be limited by a SW feature key. Capacity feature key defines allowed combinations of channel width and modulation for transmitting channel according Capacity SW keys table. The Capacity feature key limit applies for transmitted data on the unit where the key is installed. It means, that for asymmetrical capacity keys could be different for each side of the link.

Capacity feature keys could be purchased bundled with RAy2 unit (and installed in the factory) or standalone or as a capacity upgrade key (both installed by user). Every Capacity feature key could be upgraded.

Separately purchased capacity feature keys

Keys purchased separately and installed by user.

Tab. 1.4: Capacity keys code scheme


For available ordering codes see RACOM web.

[Note]Note

RACOM is able to generate customer specific Capacity feature keys on special request.

Upgrade capacity feature keys

Keys purchased separately and installed by user.

Tab. 1.5: Upgrade keys code scheme


For available ordering codes see RACOM web.

1.7.3. Certified Accessories

Ordering codes for all accessories certified by RACOM to work properly with RAy units, are listed in Section 2.1, “Overview and on Accessories section on RAy web site.

RACOM resells those on RACOM E-shop and in Section 2.2, “Details provides full information where to buy them directly from original suppliers.

[Note]Note

Accessories are necessary to be added to RAy units to allow a proper functionality of the whole microwave link. Please consult your supplier to ensure completeness of your product delivery for the individual link situation, spectrum regulations, local security requirements, type of power sourcing, grounding, etc.