Rev 2.0 3-Apr-2010
User Guide
VuLink VL300
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Introduction
The VuLink VL300 is a point-to-point wireless link that transports SD/HD SDI and DVB ASI digital video
signals from the transmitter unit (TX300) to the receiver unit (RX300). Both the TX300 and the RX300
have the same functional LED indicators located on the rear panel (Figure 1). SDI video input to the
TX300 and video output from the RX300 are connected via a standard BNC connector on the bottom of
the enclosures; 12VDC power is connected via a standard 4-pin XLR connector adjacent to the BNC
connector (Figure 2). Pin 1 is negative (-) and pin 4 is positive (+) 12VDC for the 4-pin XLR connector.
Figure 1. Rear Panel LED Indicators
Figure 2. Video and Power Connectors on Bottom of Enclosure
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Figure 3. Typical Link Setup
Setup
1. The most efficient method for setting up the TX300 and RX300 is to have one person at each end
of the link. Mount the TX300 and RX300 units so that the front of each unit is pointed towards the
other with no obstructions between them (line of sight). Figure 3 shows a typical link setup.
2. The TX300 and RX300 have multiple ¼-20 threaded holes in the bottom mounting plate for
mounting to either a wall/pole mount or a tripod. Figure 4 shows the mounting plate hole
locations.
Figure 4. Bottom Mounting Plate
3. Connect a 12VDC source or the provided AC power supply to each unit (12VDC is supplied via
the 4-pin XLR connector). With no video connected to the transmitter, the green PWR ◙ indicator
and red LER ◙ indicator will be illuminated.
4. Connect a video cable with SD-SDI, HD-SDI or DVB-ASI from a video source to the TX300 BNC
connector (be sure the BNC cable connector is securely seated into the recessed TX300
connector). The TX300 red LER ◙ indicator will go out, and either the orange SD ◙ or blue HD ◙
indicator will illuminate depending on the input video source format. The yellow LOK ◙ indicator
will also illuminate.
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5. Connect a video cable from the RX300 receiver BNC connector to an SDI video display and/or
waveform monitor (be sure the BNC cable connector is securely seated into the recessed RX300
connector). In the event that a professional SDI display is not available, an SDI to HDMI
converter (such as the AJA Hi5) can be used to display the HD video on an HDMI compatible
type TV.
6. Adjust the pointing angle by visually sighting at each end of the link until the RX300 blue HD ◙ or
orange SD ◙ (depending upon video format) is illuminated. The yellow LOK ◙ indicator will also
illuminate. While adjusting the pointing angle, minimize the flash rate of the RX300 receiver red
LER ◙ indicator. The red LER ◙ indicator shows SMPTE CRC (cyclic redundan cy check) errors
in the video data stream. With minor readjustment of the pointing angle, the LER ◙ indicator flash
rate should be minimized or be completely off. In the event that the link range exceeds the
maximum specified operating distance, a high quality video signal can still be achieved even with
some CRC errors occurring over the link since most result from random chroma/luma pixel errors.
In specific applications where extended range is required the acceptability of the video quality
may be more important than achieving a zero CRC error rate.
7. Once the correct pointing angles are found, the units will transport video reliably.
TX and RX Attenuation Adjustment
There may be some physical environments (such as highly reflective building surfaces, or over shorter
ranges less than 25 meters) where it becomes necessary to adjust the receive and/or transmit attenuation
settings. The VuLink TX300 transmitter and RX300 receiver have internal attenuation setting switches
(16-position, pc-board mounted) on their baseband printed circuit boards. In order to access the
attenuation switches, the hinged enclosure top cover must be unlatched at the rear. Figure 5 sho w s the
latch at the rear of the enclosure.
a (Rear Latch Closed) b (Rear Latch Open)
Figure 5a & b
Rotate the latch handle ¼ turn counterclockwise and tilt the latch arm back slightly to release the latch
from the keeper on the cover (Figure 5). The entire top cover can then be lifted and rotated up from the
rear (the cover hinge is at the front of the unit). Figure 6a shows the location of the attenuation
adjustment switch (the location of the switch on the TX300 is slightly higher on the pc board than on the
RX 300).
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a (Attenuation Switch on PC Board) b (Setting the Switch)
The nominal attenuation settings for the TX300 and RX300 are as follows:
TX300: Switch Setting 5 to 7
RX300: Switch Setting B to E
For very short range (5 to 10 meters), both attenuation settings should be set at E.
The switch can be adjusted using the supplied adjustment tool (Figure 6b). For shorter distances, the
switches can be increased in their values to obtain a low error rate on the receiver’s LER ◙ indicator. The
switch is a hexadecimal type labeled 0 through F with higher settings indicating more attenuation (i.e. less
gain). A typical example for a very short range set up (approximately 5 to 7 meters) would be to set the
TX300 and RX300 switches to E.
Figure 6a & b
Technical Support
Vubiq is a global leader in millimeter wave and digital video technology offering products in the broadcast,
telecommunications, medical, security and government markets. If you have any other technical
questions or inquires not addressed in this User Guide, please contact Vubiq via phone or email.
Vubiq, Inc.
65 Enterprise
Aliso Viejo, CA 92656
U.S.A.
949-226-8482
info@vubiq.com
www.vubiq.com
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Specifications
Video Signaling
SMPTE 259M (270 Mb/s)
SMPTE 292M (1.485 Gb/s, 1.4835 Gb/s)
DVB-ASI (270 Mb/s)
General
Power Requirements 11-16 VDC, 1 A; 4-pin XLR male
Carrier Frequency 60.5 GHz
Channel Bandwidth 1.5 GHz
Antenna Beamwidth 3.5 degrees
Polarization Vertical
Size 373 x 140 x 115 mm (14.7 x 5.5 x 4.5")
Weight 2 kg (4.4 pounds)
Temperature -20 to 65 C (-4 to 150 F)
Mount ¼-20 thread for tripod or wall mount
Transmitter (TX300)
Video input 75 ohm BNC
RF Output Power 10 mW
Receiver (RX300)
Video Output 75 ohm BNC
Noise Figure
6 dB
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own
expense.
Any changes or modifications to this device not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
FCC RF exposure guidelines require that this device be installed in such that a minimum separation distance of 25 cm between the
device and any persons is maintained when used in a general population / uncontrolled environment. Separation distances less
than 25 cm may result an RF exposure level that exceeds the FCC guidelines
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