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Power Supply
All Barrett transceivers require a supply voltage of 13.8 V DC. In most vehicles or
vessels this is available from the battery, in the case of vehicles with a 24 V system
a 24 V to 12 V converter rated at 25 amps should be used (Barrett P/N BCA90014).
In fixed station installations where mains power between 88 VAC and 256 VAC is
available, a Barrett 2022 power supply should be used.
In base station installations where no mains supply is available a Barrett 2001 solar
power supply is available.
Note:
- Some installations use an AC battery charger to float charge the supply
battery. Battery chargers can produce electrical noise from the rectifier diodes.
This noise causes a static type of interference in the receiver. It may be necessary,
therefore, to switch off the battery charger whilst the transceiver is in use. If float
charging of batteries is required for installations with unreliable AC power supply, it
is recommended that a Barrett 2022 be used as this provides a boost and float
charge facility to maintain a battery without the noise problem described above.
Voltage Drop
The average current consumption of the transceiver is low but during transmission
of voice peaks, high current is needed for short intervals. This means that the
power supply cable must be heavy enough to supply these short duration current
peaks without excessive voltage drop. Preferably use only the power cable supplied
with the transceiver. If extra cable is required use a cable with a conductor square
area of no less than 8mm. Unwanted voltage drop will also occur if incorrect wiring
techniques such as poor choice of connection points and incorrect use of terminal
lugs are used.
Protection Fuse
The transceiver is provided with adequate internal protection. However, the fitting
of an external fuse is considered necessary, not for protection of the transceiver
itself, but to ensure that in the event of damage to the cable, a fire risk does not
exist. The fuse used must be installed in the active wire as close as possible to the
battery, and must be of a type which has a low voltage drop at the peak currents
expected.
Note:- in-line 3AG glass fuses are not suitable
. An ATC automotive blade type
fuse rated at 25A with a suitable high current ATC fuse holder rated at 30A or more
should be used. These type of fuses and holders are contained in our standard
installation kit (Barrett P/N BCA20004) or are available individually (Barrett P/N
BCA20021)
Содержание 2050
Страница 31: ...31 of 285 then press the key ...
Страница 66: ...66 of 285 then press the key type in your messages using the alpha numeric keys then press the key ...
Страница 91: ...91 of 285 use the Scroll keys to select Yes to erase the address book entry then press the key ...
Страница 93: ...93 of 285 enter the telephone number using the numeric keys up to 16 digits then press the key ...
Страница 99: ...99 of 285 then press key to save the new alias ...
Страница 110: ...110 of 285 Add an Entry press the key type in a new label using the Alpha keys then press the key ...
Страница 118: ...118 of 285 Upload pack See section Cloning programming from another transceiver ...
Страница 134: ...134 of 285 then press the key Change the Selcall format associated with the ID if required then press the key ...
Страница 172: ...172 of 285 If the operator attempts to change channels while linked the following screen is shown ...
Страница 175: ...175 of 285 If the operator attempts to change channels while linked the following screen is shown ...
Страница 186: ...186 of 285 Press the key and the first address that matches or the closest match the prefix entered is selected ...
Страница 189: ...189 of 285 Pressing the key displays the link status Or if you already have a link established ...
Страница 224: ...224 of 285 Fitting the 2050 Into the 2040 Manpack Adaptor Removing the Battery Cartridge ...