User's Manual

Tehama Wireless Design Group 12/9/2005
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A system consists of two or three types of hardware, and two pieces of software:
• PC Database Software
• Tehama Configuration Utility
• One Base Unit with USB cable
• A variable number of Sensors radios, each with 2 AA batteries
• A variable number of Repeater radios (optional, depending on size of installation) with
external DC power supply
Warning
Tehama Configuration Utility
The following discussion assumes the base is connected a PC via the USB cable, and both the
PC Database Software and the Tehama Configuration Utility are installed.
This utility can be run on the PC either prior to or during a site installation, or when new sensors
are added to a system. All sensors come from the factory with a default configuration, and the
utility need not be run if no sensors are required to deviate from the default.
The Utility will allow the following options to be configured on a sensor:
• Transmit Interval, defined as the time between scheduled transmissions of temperature
data. A temperature measurement is taken every Transmit Interval, and the data
transmitted within 60 seconds after the measurement. The units for this parameter are
seconds, and the default value is 900 seconds (15 minutes).
• Measure Interval, defined as the time between scheduled temperature measurements.
This is used in conjunction with Temperature Change (see below) and must be smaller
than the Transmit Interval time. A value of 0 for this parameter will disable
measurements in between the Transmit Interval. The units for this parameter are in
seconds, with default set to 0.
• Temperature Change, defined as a percentage change in the Thermistor resistance
value (i.e. temperature) detected by the sensor. A Delta Temp alarm will be generated
within the PC Software if a Sensor reading taken at a Measure Interval is more than
Temperature Change percent from the prior Transmit Interval value. The units for this
parameter are Percent (%), with the default value set to 0.
No other parameters are configurable on the sensors. Absolutely no parameters are
configurable on the Base or Receiver.
NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV
INTERFERENCE CAUSED
BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT.
SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE
EQUIPMENT