AUDIOTEL INTERNATIONAL
Ltd – Issue 3.1 (09/2004 )
Controls & Indicators
2
LISTEN / MODE
The function of this button depends on which signal source
is selected. When the Compare button is selected this button
acts as the Mode button as described below. When 2nd or
3rd signal sources are selected this button acts as the Listen
button as described below
Listen
Selects Listen audio output, this allows you to listen to the
returned signal via an Amplitude Modulation detector. If
the target is, for example, an electronic timer with an audio
frequency clock signal then the electronic clock may be
heard as a regular sound when LISTEN is selected.
Mode
Toggles between the default MAN (manual power control)
and DSP (Digital Signal Processing) automatic power control.
The current power mode is indicated on the bottom line of
the LCD display. When in DSP mode the decimal point on
the single character LED display on the antenna head fl ashes
to indicate this mode has been selected.
Note 1 During start up in the ‘Set Tx power‘ menu this button
(listen) sets the maximum TX power to 500mW (EU high
power setting).
3
DETECT /
�
(B
ACKLIGHT
)
When the Compare button is selected this button toggles the
LCD back-light On and Off. This button operates the Detect
function only under the following conditions:
Note 1 During start up in the ‘Set Tx Power‘ menu, this button
(detect) selects the Non EU option. This enables the rotary TX
output power control (9) for the operator to set power, please
refer to Appendix B for guidance.
In Non EU operation the Optimum Tx channel is selected,
frequency hopping is disabled, detect function enabled and
the unit is no longer EU compliant.
16
SuperBroom Plus TA – Operating Manual
OPERATION
B
ASIC
D
ESCRIPTION
The Type Approved Super Broom is a frequency agile
non-linear junction detector utilising Dynamic Channel
allocation. There are a total of 19 channels available
within the operating band of 869.4 – 869.65MHz. When
SuperBroom is switched on the receivers are calibrated.
The ambient RF Background is measured and a search
algorithm selects 10 RF channels for optimum operation. This
ensures that potential interfering signals are avoided, thereby
reducing false triggering.
Note If you are not familiar with the principles of detection using
Harmonic Radar or Non-linear Junction Detection you may
wish to read the
Theory of Operation
section later in this
manual before attempting to actually use SuperBroom.
F
REQUENCY
H
OPPING
M
ODE
When either EU-Low or EU-High is selected during start
up, the unit will automatically hop around the optimum 10
channels at 1 minute intervals.
Note 1 Frequency plan is given in the appendices.
Note 2 when Non-EU is selected at start up, the Optimum Tx
channel is selected, frequency hopping is disabled, detect
function enabled and the unit is no longer EU compliant.
Caution Operation in this un-license mode is the responsibility of
the user.
P
OWER
M
ODE
SuperBroom can be used in one of two power control
modes. The power mode is selected using the Listen/Mode
button on the front panel.
9
