Tire Pressure Generation TIS-27
Wheel Unit
Type
ASK/FSK 433.92 MHz
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1. SYSTEM OVERVIEW
The tire pressure monitoring system (referred as TG for Tire Guard) consists of the following
units:
- Tire guard wheel unit type TIS-27 which includes an integrated pressure, temperature and
acceleration sensor and a RF transmitter.
- LF receiver unit which includes a LF receiver (not described in this document)
The TG monitors a vehicle's tire pressure whilst driving or stationary. An electronic unit (wheel
unit) inside each tire, mounted to the valve stem, periodically measures the actual tire pressure.
By means of RF communication, this pressure information is transmitted to the RF receiver.
2. TECHNICAL DESCRIPTION
Carrier frequency:
Number of channels:
Type of modulation:
Baud rate:
Rated Output Power:
Antenna:
Voltage supply range:
433.92 MHz
1
Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK)
2400, 4096bps, 9600, 19200bps
< 10mW
Internal
2.1 up to 3.2V
3. WARNING
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates
uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following
measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
To satisfy FCC RF exposure requirements, a separation distance of 20 cm or more should be
maintained between the antenna of this device and persons during device operation.
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