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It  enables  lossless  reduction  of  rifle’s  rate  of  fire,  so  you  can  use 
stronger LiPo batteries, and still have ROF just like in a real gun.

Rate Of Fire Control

We know how vital the fast trigger response is during combat. Victory 
is  often  a  matter  of  fractions  of  seconds.  This  is  why  we  have 
developed  the  Smart  Trigger  function.  This  function  enables  you
to achieve faster trigger response.
It  works  with  the  ROF  Control  system.  During  the  first  shot,  the 
microprocessor  sets  ROF  Control  to  100%.  After  the  first  shot,  it  is 
switched  to  the  previously  programmed  value,  e.g.  30%.  As
a  consequence,  the  first  shot  is  fired  with  full  rate  of  fire,
and  subsequent  ones  with  a  reduced  ROF. The  best  results  can  be 
achieved by using a battery with higher voltage than a standard one. 
For example, if we use a 7.4V battery, we can change it to 11.1V. In this 
way, we will achieve faster trigger response with the same rate of fire 
as with a standard battery.

Smart Trigger

Burst mode enables you to make 3-shot series. In this way you can 
save  ammunition  and  increase  the  realism. You  can  change  AUTO 
mode to BURST mode or SEMI* mode to BURST mode.
If in SAFE/SEMI/BURST mode you release the trigger earlier, you can 
make one or two shots. The burst time is set in the menu with accuracy 
to 4ms. The processor actively compensates for the change in burst 
time with a decrease in the rate of fire due to battery discharging.

*SEMI to BURST in enhanced mode only

3-rd burst mode

The usage of modern transistors and microcontroller has enabled us 
to create the smallest and most reliable AEG Controller in the market.

3rd Generation MOSFET

USER GUIDE

07

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Summary of Contents for 361813478

Page 1: ...Last update on DECEMBER 22 2016 www gatee eu USER GUIDE...

Page 2: ...THE USER Caution must be exercised to prevent short circuiting the battery as the consequences can be very dangerous We recommend that this product should be installed by an experienced airsoft servi...

Page 3: ...ectives ECDIRECTIVE2011 55 EU ThisproducthasbeencertifiedasRoHSCompliant WARNING WARNING WARNING NOTE Before starting installation process please ensure that your AEG is empty and there are no BBs ins...

Page 4: ...4 01 Overview 5 Key Functions 6 Package Contents 9 02 Installation 10 Simple 10 Enhanced 10 03 Set up your MERF 3 2 12 04 Menus 14 Sub Menus 15 Factory Settings 17 05 Burst Time setting 17 06 GATE Li...

Page 5: ...ones It has been adapted to work even with the most powerful springs including M170 Main Functions Features MOSFET Active Brake Electronic Fuse Battery Protection Over temperature protection Debounci...

Page 6: ...itsparts Itisveryimportant especiallywithanAEGpowerupgrade Afterreleasingthetrigger therifle immediatelystopsfiring Thus you gain more realism and additionally you do not waste your precious ammunitio...

Page 7: ...achieved by using a battery with higher voltage than a standard one For example if we use a 7 4V battery we can change it to 11 1V In this way we will achieve faster trigger response with the same rat...

Page 8: ...ndtherifle EnhancedMode ItrequiresmodificationofAEGinstallation Connect trigger contacts to MERF 3 2 You can do it using the signalwireattachedtothekit Operating Modes The function gives you the optio...

Page 9: ...the kit MERF 3 2 Additional kit of Deans T Connectors Double signal wire for trigger contacts Single signal wire for trigger contacts Programming button 01 02 03 04 05 01 02 03 04 05 USER GUIDE 09 WW...

Page 10: ...gearbox With a version 3 gearbox installation is easier because the contacts are on the outside of the gearbox Please consult a local airsoft technician if you have never disassembled a gearbox befor...

Page 11: ...ect it to the top pin Fig 2 Connection modification scheme b Installation of MERF 3 2 with replacement of wires Replacing the existing AEG wiring with high quality low resistance wiring in conjunction...

Page 12: ...AY ALL ON Step 3 Automatic software version check Two LEDs light up for a second 4 LED DISPLAY 4 LED DISPLAY Step 1 Connect the battery and the programming button to MERF 3 2 FUSE 4 LED DISPLAY ALL OF...

Page 13: ...t Green ON A B 4 LED DISPLAY Right Green ON Step 4B To activate the Programming Mode in case of enhanced installation p 10 11 disconnect the motor and press the programming button or the trigger quick...

Page 14: ...ugh the main functions of MERF 3 2 Press and hold the button for about a second if you want to enter a particular function When you enter the function menu cycle through the function settings by short...

Page 15: ...U SMART TRIGGER MENU APPROXIMATE BURST TIME MENU PRECISE BURST TIME MENU OPERATING MODES MENU SAVE EXIT QUICK PRESS NiCd 7 2V NiCd 8 4V NiCd 9 6V NiCd 10 8V NiCd 12V LiPoly 7 4V LiPoly 11 1V LiFePO 9...

Page 16: ...MI BURST ENHANCED MODE BURST AUTO SIMPLE MODE SEMI AUTO SIMPLE MODE SEMI BURST OFF ON SMART TRIGGER MENU MERF 3 2 offers 64 settings of burst time for your AEG Settings up to 192 ms in the Approximate...

Page 17: ...TS PER SECOND 31 rps 23 rps 18 rps 05 Burst Time setting MERF 3 2 allows you to use 3 rd burst firing mode It supports replicas which rate of fire ranges from 7 to 31 shots per second Set Burst Time i...

Page 18: ...me setting setting by hearing or setting by making a measurement of rate of fire via a microphone or chronometer a Burst Time setting by hearing if you do not know the ROF 1 Set approximate Burst Time...

Page 19: ...now the exact ROF of your AEG you just have to type in the menu a time of three shots Make the conversion in a simple way according to the formula Burst Time ms 3000 ROF rps An example for ROF 20 shot...

Page 20: ...t cover a defects or damage eg mechanical thermal or chemical resulting from accident misuse misinterpretation of the instructions abuse neglect unusual physical electrical or electromechanical stress...

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