BBV Tx300 User manual

Building Block Video Ltd.,
Unit 1, Avocet Way,
Diplocks Industrial Estate,
Hailsham, East Sussex, UK.
Tel: [phone]
Fax: [phone]
Telemetry
Transmitter
Installation
Guide
BBVBBV
Models covered
Tx300

Tx300 Telemetry Transmitter Installation Handbook Rev-03 Page 2of 6
UNPACKING
Inspect the packaging for signs of damage. If damage has occurred, advise the carriers and or the suppliers
immediately. Unpack the receiver carefully and check that all the items are present and correct.
SAFETY PRECAUTIONS
All normal safety precautions as laid down by British Standards, the Health and Safety at Work Act or the relevant
National safety legislation if installing in a country outside the U.K. should be observed and servicing should be
referred to qualified service personnel
INTRODUCTION
The BBV Tx300 is a very easy-to-use keypad for use in a single-camera CCTV system. It is easily installed into
either a new or an existing system simply by connecting a BNC input and output, or twisted wire pair and a 9-volt
supply.
ILLUSTRATION OF TELEMETRY SYSTEM SHOWING LOCATION OF KEYPAD
POWER
IRIS FOCUS ZOOM
PAN + TILT
PROGRAM
BBV1000
Tx300 Transmitter
BBV Rx receiver
9v PSU
75R Terminated
Monitor
POWER
Basic One-to-One Telemetry System
500M-RG59/1Km-CT125
alternative-20mA twisted pair

Tx300 Telemetry Transmitter Installation Handbook Rev-03 Page 3of 6
LAYOUT OF THE BBV Tx300 KEYPAD
KEYPAD FUNCTIONS
Pan and Tilt Action:
Press the relevant direction arrow(s)

Tx300 Telemetry Transmitter Installation Handbook Rev-03 Page 4of 6
Lens Action
There are six lens-function switches on the BBV Tx300 keypad. These are Iris
Open, Iris Close, Focus Near, Focus Far, Zoom In and Zoom Out. Press and
hold the relevant key until the desired picture is obtained. Note: If the key is
pressed and held for longer than one second, High Speed Lens Action is
activated. Inching is achieved by quick presses of the key.
Auxiliary Function Switch
There is only one auxiliary function switch on the Tx300, it is designated as the lights relay, press for on, press for
off.
SELF TEST
To run Self-Test, press Program and Focus Far. This activates the Self-Test routine in the BBV range of Rx telemetry
receivers. See the Telemetry Receiver Installation Handbook for more details.
------------
IRIS LEVEL PROGRAM
To pre-set the aperture of the iris, press Iris Open or Iris Close until the desired level is reached, then press Program
and iris open together to set. Note: There is a 15-second time-out, after reaching the correct aperture setting, in
which to program the Iris setting. When this time period expires, the iris reverts to its default setting.

Tx300 Telemetry Transmitter Installation Handbook Rev-03 Page 5of 6
RANDOM PAN – Rx300/Rx300M Receiver
The Rx300/Rx300M telemetry receivers provide a random pan feature. During Random Pan operation, the camera is
randomly panned left or right for a random duration, paused for a random duration and then panned again. This adds
the affect that the camera is manually controlled. During random pan, the camera can be tilted to the desired angle
using the up/down buttons. Random pan is disabled by pressing either the pan right or the pan left button.

Tx300 Telemetry Transmitter Installation Handbook Rev-03 Page 6of 6
TWISTED PAIR OUTPUT
The TWISTED PAIR output sends telemetry signals from the transmitter to the receiver. A video cable connection is still
required. The normal reason for using a twisted pair option is to connect to a non-cable transmission system, fibre,
microwave etc.
The twisted pair output option provides a 20mA compatible output. 1200 baud 8 data bits 1 stop bit.
V B B
1 2
3 4
5 6
7 8
IRIS FOCUS ZOOM
PRESETS LENS PAN & TILT
PROGRAM AUTOPAN
#
Polarity not important at Rx.
Maximum cable resistance 330R
If RF/Laser/Microwave etc. used
to extend link, 20mA input may
be polarity sensitive.
Grey connector on Rx PCB, Pins 1 & 2
Section of Rx
Simple twisted pair telemetry when not practical to use up-the-coax telemetry.
A coaxial cable is required to carry the video from the camera to the control point.
If the Rx is over driven from the RF/
Laser/Microwave equipment, the error
LED will light. Connecting a 470R
resistor across Pin 1/2 cures problem.
Tx300/400/400DC