The computer interface allows you to use the cb625 in a more efficient way. Instead of a small window displaying, in turn, the velocity and energy level of the shot just fired, the interface displays on the computer screen up to three windows.

The first window lets you configure the software to your specifications such as which COM port to use, whether you want the log file, and several choices of .WAV files for sound effects. This window also shows the velocity and energy level ( you have to enter the pellet weight for calculation ) of the last shot, the average velocity and energy so far, and the number of shots recorded.

If you click BIG on the manu bar, a big window ( re-sizable ) showing the velocity and energy of the last shot appears, with the numbers in an eye-catching red.

If you look down the front part of the V-block you will see the T-ridge which slides into the groove on the back of the 625. This T-ridge is too short for use in air pistols. So the main idea is to extend this T-ridge up high enough to go into the groove on the unit.

I cut off a section of wire from a coat-hanger ( the kind you get from dry cleaners ) and bend it into a very narrow inverted U, and slide it upwards into the grove on the 625 to make it fit. Adjust the width of the U so it fits snuggly into the groove. This is the extension of the T-ridge, and it should be about 2.5 to 3 cm, depending on the cylinder and barrel configuration of your pistol. If it is too long it will get in the way of the barrel and get hit by the pellet. If it is too short the extension will not be sufficient to allow the 625 to center with the barrel axis. So there is a bit of trial and error.

Once you determined the length of this section you can bend the two legs of the inverted U outwards a little, and then straight down again. This is to widen the U to allow the lower section to fit over the V-block right behind the T-ridge. You can then bend the end of the wire back up right behind the two legs you just made. Once that is all done, you can use a piece of rubber band to secure this extension to the V-block.

You do not have to remove this set up unless you are going back to a rifle. But once the wire part is made up, taking it off and putting it back on is only a matter of seconds.

Please see following sketches:

Use this rod to aid you in making adjustments. View from the side as well as from the top, and move the combro till you are satisfied that the rod is running through the middle of both sensors.

Now turn on the power. You should see a cloud icon on the top of the display, and a wide '|---|' in the main display. This indicates both the first and the second sensors are blocked. Of course they are, because of the rod you put in. This also means that you have correctly aligned the sensors. Since the pellet coming out from the muzzle should be flying at almost a straight line, the rod is a simulated way to block the sensors in place of the pellet.

If you see '|---' or '---|' then only one sensor is blocked, and you should readjust the Combro's position.