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| Wiring |
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| Connect
up to the vehicle's power supply as directed by the label
on the black power lead coming out of the base of the tripmeter.
This is normally Brown to +12 volts and Green/yellow to -12
volts. Connect straight to the vehicle's battery posts via
a 2 ampere fuse (not provided with the Brantz) on the live
wire. The blue in this cable is not normally used. The sensor
is connected to the grey cable coming out of the base of the
tripmeter as directed by the separate sheet showing all the
possible combinations of sensor and how to fit them. If you
are using the universal speedometer cable sensor the grey
cable contains a Brown which connects to the sensor brown,
Blue goes to blue, and Green goes to green. The remote reset
button is permanently cabled to the tripmeter. |
| Use |
|
| The
tripmeter is switched on by means of the switch on the base
of the meter. The switch is moved from the 0 pressed position
to the 1 pressed position. The meter digits will light up
when the power is ON. A battery charger is not a suitable
source of power to test the tripmeter. If the meter is switched
OFF then it should remain switched off for a minimum of three
seconds or so. |
| Controls |
|
| The
remote reset button will zero the lower left hand INTERMEDIATE
distance display. The metallic switch on the top right hand
of the face of the meter has three positions, and will normally
be in the central position. If this switch is moved upwards
to the FREEZE position it will stop the top TOTAL display
from incrementing. This facility is useful if the competitor
wishes to preset the TOTAL distance figure to a certain value
which will be reached at a known certain point on the road,
or the TOTAL reading is too high and the vehicle needs to
travel a distance without the TOTAL being incremented. The
downward position of this switch towards the T ZERO position
zero's both readouts on the Clubman version of the Brantz
International 2 'S' meter and just the top TOTAL readout on
the 'Pro' Brantz model. This switch should be operated momentarily
after the tripmeter is first switched on. The STEP control
to the right of the TOTAL readout is to edit the TOTAL readout
value. It is a rotary control which is normally fully anti-clockwise
until a 'click' is felt. Turning this control clockwise will
cause the TOTAL readout to step itself which enables the competitor
to set the TOTAL readout to any figure and is itself governed
by the +/- control described below. This facility is useful
to align the TOTAL readout value to a value given, say, by
the organizer's handbook at a certain point. Note that the
STEP over-rides the FREEZE control. The control marked + and
- is fitted to the 'Pro' models and allows the tripmeter to
count upwards or downwards. (+ is incrementing, or upwards,
- is decrementing, downwards). |
| Speed
/ Average Speed |
|
| The
three digit display on the lower right hand corner of the
tripmeter will display the vehicle's current speed to three
digits in the units to which the tripmeter is calibrated,
i.e. if the tripmeter is calibrated in miles then the speed
and average speed will be in miles per hour. If the tripmeter
is calibrated in kilometres then the speed and average speed
will be in kilometres per hour. Note that the high accuracy
of the speedometer is automatically calculated from the distance
calibration of the tripmeter and is dependent for accuracy
on the accurate calibration of the tripmeter as described
later. The three position switch just above the SPEED/AVERAGE
SPEED readout should be in the left position marked SPEED
to use the readout as a conventional speedometer. In the central
position the readout will illuminate the decimal point which
indicates that the readout is showing AVERAGE SPEED, and that
this average speed has been calculated to one decimal place.
Switching from speed to average speed by means of the switch
does not interfere with the average speed calculations. The
calculation of the average speed commences when the three
position switch is momentarily moved to the right position
marked ZERO. It is necessary to hold this switch operated
for about half a second. The average speed Zero can be used
at any time with the vehicle moving or stationary and is independent
of the TOTAL and INTERMEDIATE readouts. |
| Calibration |
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|
The
meter is calibrated to be accurate on any vehicle fitted
with any type of Brantz sensor and using any wheel size
or gearing by means of the three thumbwheel switches marked
CALIBRATION. If the meter is to show hundredths of a kilometre
then the thumbwheel switches are first set to 100. Find
the start of an accurately measured kilometre and momentarily
press all the reset (zero) controls. Drive the measured
kilometre and stop accurately at the end of the distance.
Note the figure which has comes up on both readouts. This
is the calibration figure for this particular setup of the
vehicle. Enter this figure onto the calibration thumbwheel
switches. The accuracy of the meter can be confirmed by
turning the vehicle around and traveling back over the measured
kilometre. The measured kilometre should be read by the
Brantz very accurately as 1.00 kilometre. To calibrate in
hundredths of a mile, follow the above calibration procedure
exactly, but substitute the word 'mile' for the word 'kilometre'.
If several wheel / tyre sizes and gearings are available
for the vehicle then repeat the calibration procedure for
each combination & note down the different calibration
figures. If the rally organizer has laid out an 'official
distance' or you wish to make your tripmeter read the same
as the rally organizers distances then the following instructions
apply: Set your tripmeter to a large figure L, say, 399
to 999 (it may be your normal calibration figure which you
know is accurate, but for this purpose, that is academic).
Zero the readouts at the start of the organizer's measured
distance (say he has given you a distance of 4.56 to the
next known point 'P'). Drive to the next known point 'P'
and note the figures on the TOTAL and INTERMEDIATE (same
figure) readouts 'D'. Divide 'D' by 'P' and multiply the
result by 'L'. This will give you the new calibration figure
to enter onto the calibration digits to make your tripmeter
read the same as the rally organizer's. N.B. your speed
and average speed will be calculated from the 'official'
distances traveled which should be the figures which have
been used by the organizer to calculate the target speeds.
Long distance events may require the use of a TOTAL readout
showing 999.9 kilometres or miles. Pro tripmeters with 'D'
in their serial numbering can shift the decimal point from
99.99 to 999.9 in the following way: Switch off the tripmeter
for 3 seconds. Operate the T.ZERO switch and keep it operated
whilst the ON/OFF switch is turned ON. The short distance
mode is re-installed if the meter is switched OFF. Note
that if the tripmeter is to be recalibrated for any reason,
then it should be done in the normal 'short distance' mode.
Long distance events: Certain of the Brantz 'Pro' models
which contain the letter 'D' in their serial number can
shift the decimal place of the top TOTAL readout one place
to the right so that the TOTAL will indicate 999.9 kilometres
or miles which is a useful facility for certain international
events. The tripmeter cannot change from one mode to the
other after being switched on. On power-up, the tripmeter
normally will be in standard mode (99.99) kilometres or
miles, but if the T.ZERO switch is held in the downwards
(zeroing) position WHILST THE METER IS BEING SWITCHED ON
then the long distance mode will be selected. If the meter
is switched off again, for two seconds, the normal mode
will be reselected. Troubleshooting: See the guarantee form
for definition of normal electrical supply, fluid ingress
and vibration / impact damage. If a malfunction is observed,
firstly connect up the meter to another car to see if the
problem is with your car's electrics. Suppliers or manufacturers
will be pleased to offer advice about testing for interference
(see sensor sheet) or other conditions which will prevent
a vehicle from being electronics compatible.
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