Trackcom Limited DPU-4500 ユーザーズマニュアル
11
3
Installation
3.1 Introduction to installation
The purpose of this section of the manual is to provide sufficient information to
the installation team to allow them to install the InfoTrack vehicle equipment.
Once installed, section 5 of this manual is used to commission the equipment.
Cars and car-derived vans tend to have similar characteristics and hence their
installation is fairly consistent. Heavy-duty commercial vehicles, particularly
articulated lorries, have their own inherent problems.
the installation team to allow them to install the InfoTrack vehicle equipment.
Once installed, section 5 of this manual is used to commission the equipment.
Cars and car-derived vans tend to have similar characteristics and hence their
installation is fairly consistent. Heavy-duty commercial vehicles, particularly
articulated lorries, have their own inherent problems.
3.2 Importance of a good installation
The importance of a good installation of the InfoTrack equipment cannot be over
emphasised. A poor installation will reduce equipment performance and
complicate the commissioning task. A good installation with sufficient thought and
planning will ensure good performance from the system and assist the
commissioning process.
When installing the equipment the bonding of the equipment and antenna is
crucial. All earth leads must be checked for a resistance of less then 0.1 Ohm to
the vehicle's main earth point. Failure to comply with this check will lead to poor
equipment performance and a likelihood of intermittent problems in the future.
Whenever possible, all earth leads must be kept to less than 410mm (16in). Long
earth leads introduce considerable impedance at radio frequencies even though
their DC resistance is low.
When cabling equipment particular care must be taken to protect all cables from
chaffing. Where cables are fed through bulkheads or panels, grommets must be
fitted to the hole to protect the cables. Damage to cables can cause false alarms
or damage to the DPU.
emphasised. A poor installation will reduce equipment performance and
complicate the commissioning task. A good installation with sufficient thought and
planning will ensure good performance from the system and assist the
commissioning process.
When installing the equipment the bonding of the equipment and antenna is
crucial. All earth leads must be checked for a resistance of less then 0.1 Ohm to
the vehicle's main earth point. Failure to comply with this check will lead to poor
equipment performance and a likelihood of intermittent problems in the future.
Whenever possible, all earth leads must be kept to less than 410mm (16in). Long
earth leads introduce considerable impedance at radio frequencies even though
their DC resistance is low.
When cabling equipment particular care must be taken to protect all cables from
chaffing. Where cables are fed through bulkheads or panels, grommets must be
fitted to the hole to protect the cables. Damage to cables can cause false alarms
or damage to the DPU.
3.3 Crimp
connectors
The use of the correct size crimp connectors is important to the reliability of the
installation. The colour of crimp connectors and appropriate wire sizes are as
follows:
installation. The colour of crimp connectors and appropriate wire sizes are as
follows:
Red crimp -
0.5 to 1.5mm
Blue crimp -
1.5 to 2.5mm
Yellow crimp -
2.5 to 6.5 mm