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47
CHASSIS
DISCONNECTED INDICATOR (BLUE
FLASHING)
Manual brake control activation is used in situations
where a slow reduction in speed is desirable. As the
manual control is pushed, the brake control begins to
apply the trailer brakes.
The manual control can be setup to allow 100% of the
unit’s power to the trailer brakes or to limit power to the
output control setting. This feature is set up at installation
via a small switch at the rear of the unit. The brake control
unit is factory-set with the switch in the ‘limited to the
output control’ position.
The output will be shown on the display when the manual
control is actuated. Brake light activation with the manual
control is also an optional setting. Some tow vehicle
circuits do not allow power for brake lights from a second
source. In these applications, the brake light feature can
be switched o
ff
using a second small switch at the rear
of the unit. The brake light connection (red wire) is still
required to activate the Spectrum™ brake control with the
switch in either position.
•
Pressing and holding the button during any mode
activates the manual brake output.
•
The manual output functions as time-based and
ramps up over time.
•
The red LEDs light up in sequence proportionally to
the brake output.
•
Adjust the gain in active process by rotating the
knob clockwise to increase and counter-clockwise to
decrease the gain while holding the button down.
•
Releasing the button returns to the previous mode.
OVERLOAD INDICATOR (RED AND
YELLOW FLASHING)
•
Indicates when the brake control is in an overload or
short-circuit condition.
•
The LEDs flash red and yellow in sequence until the
overload condition is removed.
•
Indicates when the trailer has been disconnected
(flashing) or if the brakes are pressed with no trailer
connected (steady on as long as brake pedal is held).
MANUAL CONTROL (RED
PROGRESSION)
•
Default control state
•
Rotating the knob clockwise will increase the
brightness.
•
Rotating the knob counter-clockwise will decrease
the brightness.
BRIGHTNESS CONTROL (WHITE
PROGRESSION)
The output control establishes the maximum amount of
power available to the trailer brakes when braking. The
only exception would be when the manual control is set
up for 100% braking.
The output control can be adjusted during initial setup,
when trailer load changes, when di
ff
erent trailers are
used or when adjustment is needed for changing road or
driving conditions.
•
Rotating the knob clockwise increases braking output.
•
Rotating the knob counter-clockwise decreases the
braking output.
•
Green represent lowest setting and red represent the
highest setting.
•
After 10 seconds of no user input, the interface
switches to brightness mode and the display goes to
sleep.
•
Pressing and holding down the button activates
manual control.
OUTPUT CONTROL (GREEN TO RED
PROGRESSION)
The sensitivity control adjusts trailer brake
aggressiveness. Sensitivity adjustment has no e
ff
ect on
the manual control. The sensitivity control can be adjusted
for individual driver preference, trailer load changes or
changing road conditions.
•
Rotating the knob clockwise increases sensitivity.
•
Rotating the knob counter-clockwise decreases
sensitivity.
•
Blue represents the lowest setting, while red
represent the highest setting.
•
After 10 seconds of no user input, the interface
switches to brightness mode and the display goes to
sleep.
SENSITIVITY CONTROL (BLUE TO RED
PROGRESSION)
•
Indicates when the brake control is self-calibrating.
•
Occurs when power is applied to the brake control
and a trailer is connected.
•
The knob lights up green in clockwise sequence
seven times.
CALIBRATION INDICATOR (RAMP-UP)
Summary of Contents for London Aire 2021
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