background image

 

 

Push    

REVIEW  

  again.   The   MKIV   XP   calculates   the    Mean   Absolute   Deviation    (average   variation)   of  

your   string   and   once   again   displays   it   as   a   percent   of   your   average   velocity.   This   number   is   the  

key   to   measuring   and   comparing   the   velocity   variations   in   your   loads.   The   load   illustrated   varies  

an   average   of   5.02%.   This   is   the   number   that   should   be   used   to   compare   one   load   to   another.  

The   smaller   the   better.   

 

MAD  

38.4  

CV  

5.02%  

 

One   more   time,   press    

REVIEW 

.   " ES "   stands   for   Extreme   Spread   which   is   the   difference   between  

the   high   and   low   shot   velocities.   " AVRG "   is   obviously   the   average   velocity   of   you   string.   At   this  

point   you   can   continue   to   press   the   review   key   and   review   each   shot.   The   “ FIND   SHOT "   function  

is   identical   to   counterpart   in   timer   mode.   

 

ES  

105.9   FPS  

AVRG  

763.8   FPS  

 

You   can    EDIT    out   individual   bad   shots   with   the    

NO  

  button   during   review.   The   MKIV   XP   will  

recalculate   your   statistical   summary   less   the   edited   shots.   

 

When   you   are   done   reviewing   your   data,   you   can   push   the    

GO  

  button   and   the   timer   will   clear   its  

memory   an   you   can   start   another   string.   Also,   you   can   push    

CST   GO  

  (Comstock   Go)   and   add  

more   shots   to   the   existing   database.   

 

NOTE :   If   you   don't   want   to   mess   around   with   all   the   review   functions,   you   can   start   a   fresh   string  

by   pushing    

GO  

  at   any   time.   

 

 

 

 

 

10  

Содержание MKIV XP

Страница 1: ...lit time and the time that each shot was fired The first shot time will remain at the bottom EXAMPLE El Presidente Drill with Timer Mode Let s say you just fired an El Presidente six reload six you don t bother checking the target you know you shot all A s but you are concerned about how you did in the time department You check the display and it reads 012 37 6 87 on the top line and FIRST SHOT 1 26 ...

Страница 2: ...7 and displays 07 1 65 4 54 You see that your reload took 1 65 seconds the time between shot 6 and 7 This time is a little long and you seriously consider switching from your Six Gun to an auto loader Printing from Review If you have one of the HP IR printers you can print the string at any time after you are done firing before or during review by pressing the PRNT key Please note that external pri...

Страница 3: ...a number and make a mistake use the back arrow key to delete the incorrect number Push the GO button Each time the shooter fires the timer will display the shot number split time and total time on the top line of the display as before When 1 2 seconds comes around the timer will beep telling you that the time limit has been reached To turn the PAR time off push PAR SET without entering a number Set...

Страница 4: ...w when you push the GO button the timer will beep immediately Set Benchmark s The BNCH button activates the PACT Benchmark feature This allows the shooter to program the timer with a series of beeps or cues at specific times after the go signal which allow him to simulate moving and pop up targets EXAMPLE Add benchmark times at 2 3 5 5 and 6 25 seconds Press BNCH YES The timer asks you for a time P...

Страница 5: ...r 3 SET The CYCLE DELAY is the time between cadence beeps Push 1 5 SET then the GO button The MKIV XP will give you a start signal beep at 3 seconds then every 1 5 seconds for ever and ever We see this primarily a dry firing tool but you can also use it for live fire You might have it trigger off of the first shot to take the draw time out of some sort of long range Bill Drill practice Keyed Beeps Th...

Страница 6: ...n movement stages where the RO runs with the shooter and leaves his finger on the GO button the MKIV XP has a keyboard lockout feature To activate it push the OPTN button until the timer asks Lock out go keys Push YES and the timer will lock its keyboard after the next GO command To reset the timer push the REVIEW key This time the timer asks ENABLE GO KEY Push YES and you re back in business The P...

Страница 7: ... RPM button The MKIV XP now displays FULL AUTO CMD Press the GO button Instead of giving you a go beep the timer displays FIRE WHEN READY Fire a fairly long burst of a known number of rounds so you have enough data to be meaningful You ll note that the timer is now displaying you time to the thousandth of a second Press REVIEW and the timer will tell you the number of rounds fired the total time an...

Страница 8: ...bility to detect the bullet 9 If shooting indoors you will have to rig an incandescent light over each screen or get our M7 IR Skyscreen Upgrade Kit Connect the SkyScreens to the MKIV XP Plug the first screen into the START plug located on the back of your timer and the second screen into the STOP plug Switch the timer on from TIMER COMMAND push the CHRN button The timer will switch to CHRONO COMMA...

Страница 9: ...ot When you are done with your string the MKIV XP will provide you with a statistical summary of your string If you have a printer just push the PRNT key and you will receive a hard copy of you string number statistical summary and each shot In addition all chrono data is held in memory for download to your PC Push REVIEW to review the desired string If you want to look at the most recent string p...

Страница 10: ...t velocities AVRG is obviously the average velocity of you string At this point you can continue to press the review key and review each shot The FIND SHOT function is identical to counterpart in timer mode ES 105 9 FPS AVRG 763 8 FPS You can EDIT out individual bad shots with the NO button during review The MKIV XP will recalculate your statistical summary less the edited shots When you are done ...

Страница 11: ...a From TIMER COMMAND press TRAJ The first thing the Ballistic Computer needs to know is the velocity to base the calculation on If you re shooting at the range it will pick up the current average velocity which you can override from the chronograph If none is present in memory it will default to 2500 0 FPS Enter a Velocity Manually If you want to change the default stay away from the SET key and fir...

Страница 12: ...e Ballistic Calculator will now ask you for the Ballistic Coefficient BC This is always a decimal number but the Ballistic Calculator is smart enough to add the decimal if you forget it Enter a BC of 475 and press SET NOTE The Ballistic Calculator will only produce correct results with C1 ballistic coefficients This is the industry standard and is what you will find in every bullet manufactures curre...

Страница 13: ... more than so many inches above or below the line of sight This option is strongly recommended for field marksman hunters and warriors The default value is a six inch vital zone This means that you ll end up with a zero that keeps the bullet within an imaginary six inch tube three inches above to three inches below the line of sight from the muzzle to the maximum point blank range The Ballistic Cal...

Страница 14: ...n to advance from screen to screen To make another print out just push TRAJ again All of the parameters you used on the last print out will appear as defaults assuming you did not turn the machine off speeding data entry 5 Additional Functions Send Shot Data to PC Send To PC is the first question asked under the OPTN button It will activate the USB port on the back of the unit In order to utilize t...

Страница 15: ...riation in the performance of ammo due to weather conditions We recommend that you give yourself at least a 25 fps cushion 50 fps would be better The skyscreens just eat batteries such are the laws of physics Whenever the screens are plugged in the Chronograph detection circuit is on When you are done chronographing unplug the screens Troubleshooting Many light sensitive chronographs have a reputa...

Страница 16: ... blast does Keep the muzzle a 5 10 ft back from the first skyscreen to keep from beating it up Remember that the farther your screens are from the muzzle the lower the velocity your chronograph will read the bullet starts slowing down as soon as it leaves the barrel If you ever have a problem with your MKIV XP that you can t resolve please don t suffer in silence Go to our support section of our we...

Отзывы: