Seco-Larm EVT-AB1Q User Manual

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-TB1-42TQ
EVT-TB1-42TAQ*

Active Video Balun – Transmitter

EVT-RB1-4T2Q
EVT-RB1-4T2AQ*

Active Video Balun – Receiver

EVT-AB1Q
EVT-AB1AQ*

Transmitter and Receiver set

EVT-RB1-4T2Q

Receiver

*EVT-TB1-42TAQ, EVT-RB1-4T2AQ, EVT-AB1AQ models does not include power adapter.

WHAT IT IS

The ENFORCER’s 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-TB1-42TQ

Transmitter

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:

electric shock, damage the device, and void the warranty. Do not open the case of this device, as there are no field­serviceable 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 © 2013 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 dangerous

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

MiEVTAB1Q_1304.pmd

PITSW4

Page 8

FEATURES

!

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

!

Transmits video signal up to 8,000 ft. (2.4km) for B/W and 5,300 ft.(1.5km) for color.

!

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.

Note: Model numbers that ends with "Q" represents RoHS compliant products.

ENFORCER ACTIVE VIDEO BALUNENFORCER ACTIVE VIDEO BALUN

(--)

(

+

)

Camera

12 VDC
adapter
500mA

DC Output, max. 460mA using
the included 500mA DC adapter.

Must adjust DC power to

compensate the voltage drop.

EVA-F5521-3

Cat 5e

Dimensions:

(Transmitter & receiver are the same size.)

2.3” (59mm)

1.7” (43mm)

(41mm)

1.6”

MOUNTING AND DAISY-CHAINING MULTIPLE RECEIVERS (optional) (fig. 4):
The optional EVT-xxxx 1U balun mounting plate allows up to eight EVT-RB1-4T2Q receivers to be mounted on

a standard 19-inch rack along with other video equipment for a safe and secure installation.
The receivers can be daisy-chained together for easier mounting of multiple units and to reduce the number

of power supplies, using the included patch cords with a 4-pin connector on each end.

Receiver

Wiring:

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

Receiver:

Inter-

connect

socket

Data

-

++

Data

+

++

Power

-

++

Power

+

++

Brightness

Adjustment

Video in

Shown

++

-

+

++

Data out

++

-

+

++

Gain

Adjustment

++

-

+

++

Data in

2

Inter-

connect

socket

++

+

++

Power in

-

2

(Reverse

Polarity

Sensitive)

Data
Data
Power
Power

-

++

+

++

-

++

+

++

For a clean installation, the receivers can be interlocked with each other.

Fig 4:

Step 1:
Lock

together

C

C

Step 2:
Add

”

ENFORCER

shim

C

“

C

C

Step 3:

ENFORCER

Add jumper.

®
®®

®®

Max 8 per
500mA adapter

C

C

Note 1: Interlocking design for cleaner and more professional results.

Note 2: Maximum of 8 can be interlocked per one 500mA adapter.
INSTALLATION OF MULTIPLE CAMERAS
Standard Cat 5e UTP cable includes four pairs of colored wires. Up to four CCTV cameras can be connected per

single run of Cat 5e UTP cable without interfering with each other under normal conditions.
However, for installations where multiple cameras cannot be run over the same cable, separate cables must

be run between the cameras and the remote devices.

Specifications for Transmitter & Receiver:

Range Color 5,000’ (1,524m)

B/W 8,000’ (2,438m)

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
Return loss
Freq. response DC ~ 5MHz
Attenuation DC ~ 5MHz, 1.5dB max.

< 2dB per pair from DC ~ 5MHz
>15dB from DC ~ 5MHz

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

Page 2 Page 7

1

1

2

Power 12/24 VDC. 12VDC adapter

included (can accept either

regulated or unregulated).
Power consumption 40mA Tx, 60mA Rx @ 12VDC
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)

OTHER CABLE TYPES
The active video baluns, when used with Cat 5e UTP cable, offer the performance characteristics mentioned in

this manual. Other types of twisted cable can be used as well. However, the performance characteristics vary
from cable to cable, and so care must be taken when using other types of cable. Specifically, the maximum
distance between the camera and the remote device may decrease significantly with lower grades of cable.

Fig. 5:

Using active balun to send video and low-voltage power.

EVA-F5521-3Q