Lotek Wireless Inc BIOTRACKER Manuel D’Utilisation
Page 20
Lotek Biotracker Receiver User’s Manual
Glossary
Analogue
Variable on a continuous scale (cf. Digital).
Variable on a continuous scale (cf. Digital).
Back-light
The light that illuminates the display for tracking at night.
The light that illuminates the display for tracking at night.
Bar graph
Shown on the top line of the display.
Shown on the top line of the display.
Battery
A power supply comprising a number of cells, usually connected in series. To get greater
voltage cells are wired together in series to make the battery.
A power supply comprising a number of cells, usually connected in series. To get greater
voltage cells are wired together in series to make the battery.
Cell
The individual units comprising a battery. Can also be used alone (i.e. not as part of a
battery), if their voltage is adequate for the equipment being powered. Cells have a
fixed output voltage depending on their chemistry (e.g. Nickel Cadmium – NiCad – cells
develop 1.2V). In common parlance a cell is often called a battery. See also battery.
The individual units comprising a battery. Can also be used alone (i.e. not as part of a
battery), if their voltage is adequate for the equipment being powered. Cells have a
fixed output voltage depending on their chemistry (e.g. Nickel Cadmium – NiCad – cells
develop 1.2V). In common parlance a cell is often called a battery. See also battery.
Channel
A location in memory holding a frequency and other information about the frequency
(e.g. whether it is selected for scanning). Channels in Biotracker are numbered from 1
to 256.
A location in memory holding a frequency and other information about the frequency
(e.g. whether it is selected for scanning). Channels in Biotracker are numbered from 1
to 256.
dBm
A measurement unit of power. In this document it refers to radio-frequency conducted
or radiated signals. It is a ratio measurement on a logarithmic scale indicating the
strength of a signal relative to 1 milliWatt (1 mW):
A measurement unit of power. In this document it refers to radio-frequency conducted
or radiated signals. It is a ratio measurement on a logarithmic scale indicating the
strength of a signal relative to 1 milliWatt (1 mW):
dBm = 10 log(P) where P is signal power in mW
Some typical measurements:
10 dBm = 10 mW
10 dBm = 10 mW
Only the largest radio tags are as powerful as this.
0 dBm = 1 mW
Reference power level for dBm.
-40 to 0 dBm = 0.1 uW to 1 mW Range of power levels that includes most small tags.
Digital
In discrete steps (cf. Analogue).
In discrete steps (cf. Analogue).
Dwell time
The period of time that the receiver spends on each channel while scanning, sometimes
called the ‘scan interval’.
The period of time that the receiver spends on each channel while scanning, sometimes
called the ‘scan interval’.
Gain
The amount of amplification within the receiver. In some receivers the overall system
gain is split between radio frequency (RF) gain (or just ‘gain’) and volume. In the
Biotracker, the gain control changes both RF and volume in parallel.
The amount of amplification within the receiver. In some receivers the overall system
gain is split between radio frequency (RF) gain (or just ‘gain’) and volume. In the
Biotracker, the gain control changes both RF and volume in parallel.
LCD
Liquid Crystal Display (referred to here as ‘the display’)
Liquid Crystal Display (referred to here as ‘the display’)