15-00043
Revision
3
September
2005
The publication, translation or reproduction, either party or wholly, of this document are not allowed without our written consent.
27
2.4.4 Operational
Test
The EXT can be tested using the same sequence as the base unit described in section 2.2.5. Turn
the unit ON using the front panel power switch. Make sure power LED (green) is lit.
Install the correct antenna to ensure matching frequency.
2.4.5 Usage
Once the EXT is turned ON, the radio is immediately enabled to strobe and/or transmits serial data
from the device as RF signals to a base or repeater provided:
•
The EXT and the device have the same baud rate
•
The EXT and base/repeater are in the same frequency
•
The EXT and the base/repeater are in the same channel number
If serial data is detected from the RJ-22 connector the radio accepts the data in the RXD serial line
and then it is transmitted over the air at 19,200 baud.
The front panel red/green LED blinks for every packet of data received/transmitted.
2.4.6 Battery
The EXT uses a standard 9 VDC Duracell alkaline battery. The battery is accessible removing the
back cover of the enclosure. Battery life is expected to be a minimum of 2 hours of continuous use
(no sleep). In the strobe mode, since the radio is in sleep mode at least 75% of the time, battery life
is expected to be about 12 hours.
An optional NiMH rechargeable battery like energizer NH22 can be installed and the battery cable
replaced. This type of battery will provide about 1 hour of back-up time in continuous (no sleep)
transmission mode but is good for many cycles. The EXT hardware has been designed to accept
other battery types with no special precautions and/or modifications.
