Nitek VB31M User manual

INSTALLATION GUIDE
NITEK®
De Schans 19-21 2a
8231 KA Lelystad
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
WWW.NITEK.NL
USA
5410 Newport Drive, # 24
Rolling Meadows, IL 60008
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
WWW.NITEK.NET
EUROPE
Video Balun Transceiver for Twisted Pair
VB31M
Video Balun Transceiver with pigtail coax and BNC for twisted pair operation with other
balun transceivers or active receivers.
The VB31M video balun transceiver is a video transmission device that provides a low
cost means of sending live video over unshielded twisted pair, point-to-point wiring for dis-
tances of up to 750 feet (225 meters) with other passive balun transceivers, up to 1,500
feet (450 meters) with TR515 single channel and model 51 series hubs, and up to 3,000
feet (900 meters) with TR560 and model 56 Series hubs. The VB31M is compatible with
all the "up-the-coax" control systems. A basic system uses (2) video balun transceivers,
one at each end of a twisted pair of wires.
These units are intended for use over existing in-house telephone wiring, Category wiring
or other twisted pair cable runs to provide a convenient, cost effective alternative to coax.
The VB31M is designed to provide superior immunity from noise and interference even
when running next to line power! The VB31M also provides a unique mounting tab and
strain relief
Description

1. Be sure to read these Safety Instructions.
2. Keep the Instructions for future reference.
3. Be sure to HEED all Warnings.
4. Follow ALL instructions.
5. DO NOT use this device or any of the equipment described, near water.
6. Clean this device ONLY with a dry cloth.
7. DO NOT block any ventilation openings.
8. Install in accordance with the manufacturer’s instructions.
9. DO NOT install near any heat sources such as radiators, heat registers, stoves or other appa-
ratus (including amplifiers) that produce heat.
10. DO NOT defeat the safety purposes of polarized or grounding type plugs. A polarized plug
has two blades, with one blade wider than the other. A grounding plug has two blades and has
a third grounding prong. The wide blade and the grounding prong are provided for your safety.
If the provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
11. Protect the power cord from being walked on or pinched especially at plugs, convenience re-
ceptacles and other points where they exit from the device.
12. Only use attachments and/or accessories specified by the manufacturer.
13. Refer all servicing to qualified service personnel. Servicing is required when the device has
been damaged in any way, such as the power supply cord or plug is damaged, liquid has
been spilled on, or objects have fallen into the device, the device has been exposed to rain or
moisture, does not operate normally or has been dropped.
14. WARNING: To reduce risk of fire or electric shock, do not expose this apparatus to rain or
moisture.
15. Installation shall be performed ONLY by qualified personnel and must conform to all local
codes.
16. Unless the device is specifically marked as a NEMA 3, 3R, 3S, 4, 4X, 6 or 6P enclosure, it is
designed for indoor use ONLY and it must not be installed where exposed to rain or moisture.
Important Safety Instructions

Parts of the VB31M
Installation & Setup
Installation Considerations
Wire and Cable Recommendations. The VB31M is designed for use with unshielded twisted
pair (UTP) wiring. Although the system will operate over wire gauges from 23 AWG through 24
AWG, all NITEK UTP system designs are optimized for 24AWG and all adjustment and setting
information assumes use of 24 AWG. Individually shielded pairs should be avoided, as they
drastically reduce the operating range of the systems. Multi-pair cable (25-pair or more) with an
overall shield are acceptable. Video can be operated in the same communication cable coexis-
tent with telephone, computer, control signals, power voltages and other video signals. While
video may be routed through telephone punch-down block terminals, any bridge-taps, also
called T-taps and any resistive, capacitive or inductive devices MUST BE removed from the
pair.
For more specific information regarding wire types, gauges and proper installation techniques,
please call Tech Support at 800-528-4343.
Video. The VB31M is designed to transmit or receive video at a maximum distance of 750 feet
with a companion NITEK Balun over Category wire of 24 AWG or up to 3,000 feet with an ap-
propriate active NITEK receiver. Before commencing installation be sure that the cable length
does not exceed the recommended lengths. If the length of cable is not known, then a measure-
ment of “Loop Resistance” of the cable can be made using a reliable ohmmeter. Short the pair
together at one end and measure the resistance of the “Loop” across the pair at the opposite
end of the cable. The resistance values shown below are for 750 feet of the most commonly
used UTP cables.

Installation & Setup
Unshielded Twisted Pair
(Loop Resistance at 750 feet)
AWG 23 24
Loop Resistance 32 Ohms 39 Ohms
Mounting
The VB31M can be mounted external to a camera housing by use of the mounting leg, or can
be placed inside the camera housing.
When mounting the VB31M externally, the placement should be sufficiently close to the camera
housing so that the mini-coax cable can be conveniently routed into the camera housing. The
mounting leg of the VB31M can be used to secure the device either with a screw or wire wrap.
The mini-coax plugs onto the BNC camera video input.
When mounting the VB31M inside a camera housing a hole of sufficient size must be available
to pass the RJ45 terminated cable through. The cable must be of sufficient length to be routed
back to the video crossover. As with external mounting, the mini-coax video cable will connect
within the housing to the camera video BNC input.
Hook-Up
In the diagram shown above, two VB31M devices are used; one at the Head-End (monitor loca-
tion) and the second at the camera location. No voltage is required for the baluns, since they are
passive devices. Video is sent back to the monitor over the UTP cable by means of the two
baluns operating as video transceivers.

Troubleshooting
PROBLEM POSSIBLE CAUSE
No video at receiver Check that camera video and coax connections are correct
Check the Unshielded Twisted Pair cable for opens or shorts
Check that the camera is powered
Check that camera power meets manufacturers specifications
Ghost image to the right, Check the cable for possible “T” taps or bridge taps and
Horizontal smearing remove them
Video will not sync, Twisted pair wires for video are reversed; correct wires on
wide white jagged area UTP connection
For Tech Support Call 800-528-4343
Hook-Up

Specifications
RoHS
COMPLIANT
2002/95/EC
Transceiver Unit
Size 0.9” H x 1.0” W x 2.0” D
(not including coax)
Input 1 Vpp composite video
(monochrome or color)
Output Balanced low voltage current loop
System (two transceivers required)
Video Format RS170, PAL, SECAM, NTSC, CCIR (color or B/W)
Video Input 1 Vpp Composite Video
Operating Frequency DC to 10MHz
Common Mode Rejection >60dB
Wire Size 23 to 24 AWG unshielded twisted pair
DC Loop Resistance 51 ohms per 1,000 feet (max)
Nominal Capacitance 17 pF/foot
Impedence 100 ohms + or - 20%
Category Wire Category 3 or better
Temperature Range -40 degrees C to +85 degrees C
Humidity range 0 to 98% non-condensing
Enclosure Material Black, ABS flame retardant plastic
(monochrome or color)
Twisted Pair Connection RJ45 connector
Shipping Weight 1 Lb.

Product Warranty and Return Information
Return Policy
A. All returns for warranty, repair, credit or any other reason must be pre-authorized. A return mer-
chandise authorization (RMA) form must be requested from the NITEK Customer Service De-
partment. The form, which will be emailed to the customer, must be filed out completely and
emailed back to the sender at NITEK for approval. An RMA number will be assigned if the re-
quest is approved. In any event, the customer will be notified by NITEK customer service of the
outcome. All approved returns must be shipped freight prepaid, insured and properly packaged.
A copy of the approved RMA form must be enclosed in the shipping container with the goods
being returned and the RMA number must be marked in a visible area on the exterior of the
container.
B. Credit Returns must have been purchased within the last 30 days of the date of the receipt
of the equipment at NITEK. Credit returns must be current products listed on the NITEK
published price list, in effect at the time of the return and must be in new and saleable con-
dition, with all factory packaging. All Credit returns are subject to a restocking charge of up
to 40%. Additional restocking and/or refurbishing charges may be assessed upon inspec-
tion. If it is determined by NITEK that the returned equipment does not meet these condi-
tions, a credit will not be issued.
Lifetime Limited Warranty
Video Balun Transceiver Products
NITEK warrants the original consumer purchaser that the Video Balun Transceiver products that it
sells will be free from defects in material and workmanship. If any such product proves defective
by our inspection, after sale to the original consumer purchaser, NITEK, at its option, will either
repair the defective product without charge for parts and labor or will provide a replacement in ex-
change for the defective product.
The purchaser shall be responsible for packaging and shipping the defective product to the ser-
vice location designated by NITEK with shipping charges prepaid. NITEK shall pay for the return
of the product to the purchaser if the shipment is to a location within the U.S.A. The purchaser
shall be responsible for paying all shipping charges, duties and taxes if the product is returned
from a location outside the U.S.A.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper
or inadequate maintenance or care, or to any product which shall have been repaired or altered
outside our plant in any way, or which has been operated in a manner exceeding its specifica-
tions, or which has had the serial number removed. NITEK shall not be obligated to furnish service
under this warranty: a) to repair damage resulting from attempts by personnel other than NITEK
representatives to repair or service the product; b) to repair damage resulting from improper use
or connection to incompatible equipment; or c) to service a product that has been modified or inte-
grated with other products when the effect of such modification or integration increases the time or
difficulty of servicing the product.
This warranty is given by NITEK with respect to the Video Balun Transceiver products in lieu of
any other warranties, express or implied. NITEK disclaims any implied warranties of merchantabil-
ity or fitness for a particular purpose. NITEK’s responsibility to repair or replace a defective prod-
uct is the sole exclusive remedy provided to the purchaser for breach of this warranty. NITEK will
not be liable for any indirect, incidental or consequential damages irrespective of whether NITEK
has advance notice of the possibility of such damages.