Turn Key g-meter+ User manual

Turnkey Instruments Ltd
g-meter+
Quick Reference Guide
SWITCHING ON
Press and release the large yellow button. The display will show -- while the
instrument does a self-check and recovers its settings from memory. Any error
conditions will cause E1, E2 or E3 to ash on the display, consult the factory if this
happens.
If the printer is connected at switch-on, a summary of the instrument settings
and status will be printed.
LOW BATTERY
The display will ash Lo if the battery is exhausted.
Do not use the instrument for statutory testing if the Lo warning is on.
CALIBRATION
The display will ash cd when calibration is due.
Do not use the instrument for statutory testing if the cd warning is on.
TEST RESULTS
The g-meter+ stores the results of the last 3 brake tests. Except when armed for a
new test, the display always shows the last test results. Press and release the button
to select Test 1, 2 or 3 as indicated by the numbered LED. These could represent
main, secondary and parking brake tests. Results are cleared if the battery or
settings are changed. Brake test results can be displayed on the LED as either peak
or mean deceleration and in units of either % g or metres/sec/sec (g=9.81metres/sec/
sec). A % g reading is shown with no decimal point, metres/sec/sec with a decimal
point.
Use the g-meterPC program to set up the instrument to your requirements.
PRINTING
Connect the Turnkey AP1300 printer; making sure the jack is pushed in properly.
Double-Click the button to print the results of the selected test. The printer will
switch-on and o automatically.
The g-meter+ instruction booklet with more information is on the CD supplied
with the instrument.

Please refer to the TintMan Operating Instructions for more detailed
information about using and conguring this instrument.
www.turnkey.tel
© 2009, Turnkey Instruments Ltd. Issue 6, December 2009.
Turnkey Instruments Ltd
g-meter+
Quick Reference Guide
BRAKE TESTING
When carrying out a statutory MOT test, the brake test procedure detailed in the latest
version of the relevant MOT Inspection Manual must be followed. For your convenience,
this is reproduced in the g-meter+ instruction booklet.
Position the g-meter+ in a convenient location in the vehicle with the direction
of travel arrow pointing roughly in the forward direction. The instrument must be
placed as parallel as possible to the road surface, and located so that it cannot
move under hard braking.
The instrument is self-aligning, providing its direction of travel arrow roughly
coincides with the actual direction of travel (within say ±60 degrees) no signicant
error will be introduced.
Press and release the button to select Test 1, 2, or 3, then press and hold the button
to arm for a new test. The previous results for this number will be over-written only if
the new test is completed. When oo appears on the display release the button; after
a sort pause, the instrument will determine its tilt within the vehicle and complete
its arming. The display indicates go when it is ready to proceed. Do not move-o
or disturb the instrument until go is displayed. To cancel the test, press the button
again and the previous results will be retained.
The vehicle can now be accelerated to speed and the brake test carried out. The
g-meter+ will automatically sense the beginning and end of the deceleration and
afterwards retain the results in its memory. During acceleration the display will
indicate Ac, and when stopping it indicates St.
SWITCHING OFF
The g-meter+ will automatically switch itself o if the button is not pressed for more
than 4 minutes. It will not switch o while it is armed ready for a brake test. Double-
Double-Click the button to switch-o manually, but disconnect the printer rst.