GUIDE TO INSTALLING EQUIPMENT

Although it is recommended that a factory-trained technician install your LPTV equipment, this may not be possible.   The guidelines which follow are for such situations.

RESOURCES

1               Acquire the services of a technician with experience of such installations, if possible.   Contact us for advice on the possible technicians.

2              If unable to obtain such a technician, send your technician for training, if possible.  

INSTALLING, TESTING & MAINTENANCE

1         Check the components

As soon as possible after arrival, the contents of the parcels should be checked to ensure that all the components specified on the packing list have been received.   If not received, the supplier or Hope Channel should be notified.

2         Tower

Where a new tower is to be erected:

a.             Written permission should be obtained, if required.

b.             The manufacturer’s instructions should be followed.

c.             Safety requirements must be complied with

3         Antenna installation

Installers should ensure that:

The feeder cable is not only expensive, it is delicate and must be treated with great care.   In particular, ensure that:

        a)  It is not bent more sharply than allowed, as this will change the impedance and reduce the quality of the signal.

        b)  It is not hung vertically over more than 5 metres without support, as the overall weight of a cable held only at the top can cause distortion and damage.

        c)  It is held by cable clamps at minimum of 1m intervals.

        d)  From the bottom of the tower to the hut, it must be supported by a cable tray.

 

5         Transmitter installation

In most cases the transmitter will have been mounted together with the other components inside a steel cabinet, which needs to be mounted on a wall and the external cables connected.

Care should be taken to NOT turn on the power until all the components are connected, otherwise damage to the equipment could result.

Special attention should be given to the power supply, as in third world countries this causes most of our problems!    Surge protection is most important.   Voltage stability is also important.


6         Testing

Tests should be carried out all over the target area of the broadcast, perhaps using a small portable TV, or preferably some measuring instrument.  It is recommended that notes be made if the signal strength can be measured, for comparison at later dates to check for deterioration of signal strength and performance.

Check for any shadows or blanks in the broadcast area.   See Guide on Testing Reception


7         Maintenance

Although most transmitters should be able to operate for many years without maintenance, problems may be avoided by regular maintenance.  Use the checklist below (and keep on permanent record for later reference).

Check to be done every 6 months	Date done & comments
Antenna clamps firm
Antenna direction correct
Cable connections tight and waterproof
Cable clamps / supports tight
Cable damage
Transmitter ventilation fans running
Transmitter fans free of leaves or other blockages
Transmitter cabinet locked
Power supply route & connections not changed
Microwave link to studio – dish not loose
Microwave link feeder cable in good condition