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Simret 4000 Instructions, Issue 10, Jan 2011 

© 1994-2011, Turnkey Instruments Ltd. Page 13 of 17 

Change Settings Menu

 

Highlight the item and single-click to change its state. The default states are shown Note some items 

will only appear conditionally depending on the state of other items. 

Bluetooth  

 

No 

  

YES to

 

switch on Bluetooth 

NO to  switch off 

Swap BT port  

Yes 

  

YES is normal setting 
NO for special versions 

I/O expansion  

No 

  

YES for input/output expansion 
NO for no expansion 

Auto-alignment  

Yes 

  

YES to auto-align with direction of travel 
NO for manual alignment 

Brake Effort    

Yes 

  

YES to

 

measure brake effort or ratio 

NO to measure deceleration 

Allow Coasting  

Yes 

  

YES for rail coasting mode 
NO for normal operation 

Metric Units    

Yes  

YES for results in metric units 
NO for imperial units 

metre/sec/sec No

  

YES for results in metres/sec/sec 
NO for %g or g 

Results in %g 

Yes

 

YES for results in units of %g 
NO for units of g 

External trig   

Yes

 

YES to start at external trigger 
NO to self-start at deceleration 

Delay in Mean 

No

 

YES to include the brake delay in the mean 

calculation 

NO to exclude (gives higher readings) 

MFDD markers  

Yes

 

YES to mark 80% and 10%V on graphs 
NO for no MFDD markers 

Calc. Distance 

Yes

 

YES to calculate stopping distance 
NO do not calculated 

Slope at stop  

No

  

YES use gradient at stop as reference  
NO use gradient at arming  

Pedal Force   

No 

 

YES to use pedal force transducer 
NO don’t use 

Sampling Rate 

NRML

  

NRML=40 samples/sec 
FAST=400 samples/sec

 

Beeper   ON 

ON means beeper is on

 

Speedo Beep  

ON 

ON means Speedo Beep is on at 10, 20, 30, 

and 40 kph/mph

 

Screen light   

ON 

ON means screen light is on

 

PIN for edit 

 

No 

YES means PIN number required for 

changing setup

 

PIN to use 

 

No 

YES means PIN number required to use 

instrument 

Mark for print  

Yes 

YES to mark all tests for print selection

 

Print graphs   

Yes 

YES to print graphs 
NO don’t print graphs

 

Overlay graphs  

Yes 

YES to print graphs overlaid 
NO print separate graphs

 

Print settings  

Yes 

YES to print test settings with results 
NO don’t print settings 

Summary of Contents for Simret 4000

Page 1: ...f a menu will return you to the previous menu or use the button SWITCHING ON To power the instrument hold down OK and then release The display will appear when OK is released The instrument will perform a short self test and display its software version and when calibration is next due The Start Menu will then appear The self test will warn if re calibration is overdue and if more than 80 tests ha...

Page 2: ...ying to pair until the device is switched on and pairing is successful Successful pairing normally takes just a few seconds although if many discoverable Bluetooth or WiFi devices are in range it may take a little longer If the device will not pair just single click to try again or hold down and release to abandon and investigate To pair with the Printer first make sure the printer is switched on ...

Page 3: ... connector with the cable provided the SIMRET will not make any attempt to pair using Bluetooth In this case after arming for a test just depress the pedal to trigger the instrument RE CALIBRATION Your Simret 4000 is a precision instrument and must be recalibrated annually by an accredited laboratory This gives you the optimum re assurance that the brake ratio measurements will always be accurate ...

Page 4: ...btained when the instrument base is parallel to the road surface The instrument is best used with the Pedal Pad attached to the brake pedal This informs the instrument when the brakes are applied so it can then measure the delay time of the braking system This is the time interval between applying the brakes and the deceleration start threshold being reached For heavy vehicles this may be quite si...

Page 5: ...n the instrument will try to force you to confirm the ground slope at the end of the test It has to do this because it doesn t know the proper direction of the slope until after the test You can override this by selecting NO for slope at stop during the arming menu in which case the instrument will assume it is positioned in the vehicle exactly parallel to the ground Over the years Turnkey has pro...

Page 6: ...tions single click to show a list of up to 16 site conditions or user notes to highlight then click again to select or double click to edit Measure GRADIENT single click to measure the slope gradient The instrument continuously measures and displays the slope gradient in percent A negative number means a downward gradient If a very accurate measurement is required first trim the instrument zeros s...

Page 7: ... you to hold the instrument on the brake while arming and also allows the instrument to determine its direction of travel but see Allow Coasting in Change Settings Until you reach a speed of 5 kph or mph you may still elect to measure the Slope at Stop and to Pause before doing so move the highlight and click ON or OFF as required see Change Settings The instrument will beep as this speed is passe...

Page 8: ...e times of the external start trigger if enabled and the start and end of deceleration Single click to close the graph and review other results Single click Print to print this test now regardless of the whether or not the test has been marked for print The printer will turn on automatically if it has been paired previously if not switch on first by pressing its button to pair Printing graphs and ...

Page 9: ...tic Backup if the SD card is fitted whenever the instrument switches off with its internal memory more than 80 full or containing more than 75 tests the internal memory will be automatically backed up to the next Folder Number on the SD Card The internal memory will then be erased This will be repeated when it is next full until all 1000 folders have been used 75 000 tests If the automatic backup ...

Page 10: ...k to accurately trim the zero readings of the instrument by following the on screen instructions Any flat surface may be used it need not be horizontal Erase all Tests single click to erase all the tests in the instrument s memory regardless of whether marked for erase or not You will be prompted to confirm Set Time and Date single click to set the time and date by following the on screen instruct...

Page 11: ...n The true stop time is the start of this time End Delay 2 5 s delay before measuring the stop point slope gradient Only if Slope at Stop has been selected Peak over 0 20 sec the minimum time the peak reading has to be sustained Dive 5 0 deg g compensation for the tilt of the vehicle in degrees tilt per g of deceleration caused by the movement of its suspension as it decelerates PFT trig 20 0 kgF ...

Page 12: ...ces The passcode is 1234 Printing pair single click on one of these to pair for printing Bluetooth Address single click to show the Bluetooth Device List as addresses to highlight then single click to select or double click to edit see Editing The instrument will automatically try to pair with the chosen device before printing Friendly Name single click to show the Bluetooth Device List as friendl...

Page 13: ...nits of g External trig Yes YES to start at external trigger NO to self start at deceleration Delay in Mean No YES to include the brake delay in the mean calculation NO to exclude gives higher readings MFDD markers Yes YES to mark 80 and 10 V on graphs NO for no MFDD markers Calc Distance Yes YES to calculate stopping distance NO do not calculated Slope at stop No YES use gradient at stop as refer...

Page 14: ...f you have selected Auto Alignment the instrument will force you to confirm the slope of the ground at the end of the test for it doesn t know the axis for measurement until after the test has begun Effectively Auto Alignment sets Slope at Stop ON if Brake Effort is being measured Allow Coasting is mainly for railway use and is only available if Auto Alignment is off and the External Trigger is se...

Page 15: ...as the mean deceleration between 80 and 10 of the test speed and is now used internationally as the standard measure of brake performance When MFDD markers is on marker lines are placed on the graphs at the 80 V and 10 V points These are in addition to the graph marker lines at the start and stop deceleration thresholds and the external trigger point Note if brake effort is being measured the Mean...

Page 16: ...If your PC is equipped with a Turnkey Bluetooth Adaptor the instrument will be discovered by it and a wireless connection made whenever it is switched on and discoverable e g in the Start Menu and Main Menu Alternatively use a Turnkey USB Link to physically connect the instrument s DIN connector to a USB port on your computer The instrument will sense the DIN connector and override the Bluetooth i...

Page 17: ... shown at the bottom of the page Click Export to download the selected page of information to the instrument Click Import to upload existing information from the instrument Click Save to save the page of information to your Windows directory for future use for example if you want to download the same plant list to several instruments Note that each tabbed page must be exported or imported and save...

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