Seco-Larm EVT-AB1, EVT-RB1-4T2, EVT-TB1-42TQ, EVT-TB1-42T, EVT-RB1-4T2Q User Manual

ENFORCER ACTIVE VIDEO BALUN ENFORCER ACTIVE VIDEO BALUN

Installation Manual

TROUBLE SHOOTING

Problem

Wavy or ghost image if
connected to image
processor (e.g.,
multiplexer or DVR), but
not if directly to monitor?

Image background flutters
b

etween dark and light?

Image is wavy and shakes?

Image is weak or faded?

No image?

Poor image quality when
testing using cable on a
reel?

Possible Cause

a. Strong electromagnetic interference.
b. Poor signal, or balun separation is

too long.
c. Split pairs.
d. Crimped cable.

Interference from external power source.

Twisted pair wires reversed.

a. Exceeded recommended balun

separation.
b. Using lower-grade cable than

recommended.
a. Power is off.

b. Cable is incorrectly connected/crimped.
c. Cable was accidentally cut.
d. Wires running from pins 7 and 8

reversed.
e. Defective camera or remote video

device.
f. Defective video balun.

Induction from the coiled cable.

Possible Solution

a. Move the cable away from possible sources of

interference.
b. Install video amplifier between image processor and balun.
c. Ensure same twisted pair connects to balun at both ends of

cable.
d. Replace cable with new cable.

Remove power source, or adjust monitor's brightness and
contrast.

Try reversing polarity of the 2 wires at one end of cable.
a. Reduce cable length.

b. Replace with a higher-grade cable. Cat 5e cable meets

specifications in the manual. Cat 5e or better cable

allows longer range.
a. Check the power supplies of all devices connected to

the cable.
b. Check video signal of receiver.
c. Double-check that the cable was connected and

crimped properly.
d. Run a continuity test on all wires in the cable.
e. Reverse the wires.
f. Replace the unit with a new unit.

Test only with cable laid out in such a way that it is not
coiled and does not double back on itself.

®

ENFORCER

EVT-TB1- 42T

Male Gold-Plated BNC

Active Video Balun – Transmitter

EVT-RB1- 4T2

Active Video Balun – Receiver

EVT-AB1

C

Transmitter and Receiver set

Range: Up to 8,000’ (2,400 meters) B/W

Up to 5,300’ (1,500 meters) color

WHAT IT IS

The EVT-TB1-42T and EVT-RB1-4T2 active video baluns are the quick, low-cost way to connect CCTV cameras
to a monitor, multiplexer, or video recorder at up to 1.5 miles (2,400 meters) away for monochrome cameras,
or up to 1 mile (1,500 meters) away for color cameras.

The baluns allow a CCTV camera’s video signal to be transmitted over low-cost Cat 5e unshielded twisted pair
(UTP) cable instead of costly coax cable. They are suitable for full-motion color and monochrome cameras.

EVT-TB1-42T

Transmitter

EVT-RB1-4T2

Receiver

IMPORTANT:

state, and local laws and statutes related to monitoring and recording audio and video signals. SECO-LARM will not be held
responsible for the use of this product in violation of any current laws or statutes.

WARNING:

dangerous electric shock, damage the device, and void the warranty. Do not open the case of this device, as there are no
field-serviceable components inside.

WARRANTY:

service for a period of three (3) years from the date of sale to the original consumer customer. Our obligation is limited to the
repair or replacement of any defective part if the unit is returned, transportation prepaid, to SECO-LARM. For complete
details regarding the SECO-LARM warranty, please contact SECO-LARM.

NOTICE:

SECO-LARM policy is one of continual development and improvement. For this reason, SECO-LARM reserves the right to
change specifications without notice. SECO-LARM is also not responsible for misprints or typographical errors.
Copyright © 2005 SECO-LARM U.S.A., Inc. All rights reserved. This material may not be reproduced or copied, in whole or in
part, without the written permission of SECO-LARM.

SECO-LARMSECO-LARM

SECO-LARM

SECO-LARMSECO-LARM
16842 Millikan Avenue, Irvine, CA 92606

Tel: [phone] Fax: [phone]

Users and installers of this product are responsible for ensuring this product complies with all national,

Incorrect mounting which leads to exposure to rain or moisture inside the enclosure could cause a

This SECO-LARM product is warranted against defects in material and workmanship while used in normal

The information and specifications printed in this manual are current at the time of publication. However, the

®

U.S.A., Inc. U.S.A., Inc.

U.S.A., Inc.

U.S.A., Inc. U.S.A., Inc.

Website: www.seco-larm.com

@

E-mail: sales

seco-larm.com

®

PITSW4

MiEVTAB1.pmd

Page 8

FEATURES

!

Active operation – The transmitter amplifies the video signal for excellent picture quality at long distances.

!

Transmits video signal up to 1.5 miles (2.4km).

!

Also transmits either PTZ (pan/tilt/zoom) data or low voltage (12-14 VAC/VDC) to CCTV cameras.

!

Uses low-cost Cat 5e unshielded twisted pair cable instead of costly coaxial cable.

!

Includes BNC connectors and removable terminal blocks
– No need to waste time crimping RJ-45 connectors.

!

High immunity from interference
– Built-in impedance coupled device and noise filter.

!

Easy installation. Removable terminal blocks.

!

Transmitter has DC output for remote CCTV cameras or peripherals.

!

Power can also be sent from a central location to remote sites using the transmitter and receiver.

!

Includes 12VDC power adapters.

!

Gold-plated BNC connectors.

!

Surge protection on video signal. Ground lifting and transient protection.

ENFORCER ACTIVE VIDEO BALUN ENFORCER ACTIVE VIDEO BALUN

Dimensions:

(Transmitter & receiver are the same size.)

2.3” (59mm)

1.7” (43mm)

(41mm)

1.6”

Receiver

Wiring:

Receiver:Transmitter:

Gain

Adjustment

LMH

++

+

-

++

Video out

Data in

Note 1: Output depends on adapter used. The transmitter uses 40mA. So a 12VDC, 500mA adapter gives 12VDC, 460mA through

this output, or a 24VDC, 500mA adapter gives 24VDC, 460mA through this output.
IMPORTIMPORT

ANTANT

: T: T

IMPORT

IMPORTIMPORT

est output before connecting to camera or other device.est output before connecting to camera or other device.

ANT

: T

est output before connecting to camera or other device.

ANTANT

: T: T

est output before connecting to camera or other device.est output before connecting to camera or other device.

Note 2: Can also be used to transfer 12~24 VAC/VDC. See fig. 5.

1

DC out

++

-

+

++

++

+

++

Power in

-

++

-

+

++

2

Data out

++

-

+

++

2

Data

Data

Power

Power

Inter-

connect

socket

-

++

+

++

-

++

+

++

Brightness

Adjustment

Video in

Shown

++

-

+

++

Data out

++

-

+

++

Gain

Adjustment

++

-

+

++

Data in

2

Inter-

connect

socket

++

+

++

Power in

-

2

(Reverse

Polarity

Sensitive)

Specifications for Transmitter & Receiver:

Range Color 5,000’ (1,524m)

B/W 8,000’ (2,438m)

1

1

Video format RS170, NTSC, PAL, SECAM, CCIR
Video input 1Vp-p, 75 ohms, BNC connector
Data/Aux RS422/RS485, or 12/24 AC/DC
Cable type Cat 2 or better (best if Cat 5e)
Blue LED Power on/off
Adjustments Tx - 3 positions

Rx - 5 dip switches
(32 combinations - ref. pg. 6)

Insertion loss < 2dB
Return loss

per pair from DC ~ 5Hz

>15dB from DC ~ 5MHz
Freq. response DC ~ 5MHz
Attenuation DC ~ 5Hz, 1.5dB max.

Common mode 60dB
rejection

1

Shorter range may result when Baluns are used with DVR. 2Can also be used to transmit low-voltage (12~24) AC/DC. Fig. 5

Power 12/24 VDC. 12VDC adapter

included (can accept either
regulated or unregulated).

Power consumption 40mA Tx, 60mA Rx @ 12VDC

2

Surge protection
(video)

Surge ratings IPP: 100 Amp at
10µsec. x 1000µsec. Max peak
current: 250 Amp at 8µsec. x
20

µ

sec., transient voltage surge

suppressors

Temperature range 7°~329° F (-14°~165° C)
Humidity range 0~95%
Impedance (BNC): 75Ω

(terminal): 100Ω

Case ABS plastic
Wt. (

without adaptors

) Tx: 3.4 oz. (95g)

Rx: 3.0 oz. (84g)

Data
Data
Power
Power

Fig. 1: Use the EVT-series active video baluns as part of a complete video security

installation.

Up To 3,000 ft. (915m)

EVT-PB1
Passive video balun

C

EV-1323C12DW

C

-

++

+

++

-

++

+

++

camera

PTZ

Power
Video
Data

Up To 3,000 ft. (915m)

EVT-PB1-31T
Passive Video Balun
with video, power,

C

DVR or Multiplexer

and data.
(Coming soon)

Up To 3,000 ft. (915m)

EVT-PBM-V17
Modular snap-in passive video

EV-1323C12DW

balun (Use any standard wall
plate, eg., Leviton, ICC).

Power

Up To 3,000 ft. (915m)

Data

Video

EVT-TB1-42T

PTZ

camera

Active video balun
(transmitter)

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