WIRING AND BENCH TESTING THE MX9644 AND P8079PH
I have added a diagram that addresses the dimensions and wiring the MX9644.
Upon receiving your NV tube it is wise to power test the unit and determine wether it is functioning properly.
THIS INITIAL TEST MUST BE DONE IN A DARKENED ROOM. Exposing these units to bright light while operating WILL damage them. This applies to both models.
Each unit operates off a xx volt DC current. On the MX9644 the ground is the furthest left pin while the hot is the furthest right. On the P8079HP the positive terminal is the brass washer located mid tube and the negative connection is located on the top of the unit next to the objective lens. As mentioned care must be taken when applying power to these units so as to not expose them to excessive light. In addition to darkening the room I would suggest covering the objective lens on the unit with a cloth.
A positive test result will be a glowing green screen on one end of the NV tube. A dark screen means you have a problem. When powered on and illuminated be sure to check for hot spots or dark areas on the green screen. This likely indicates that the NV tube has been damaged or is in the process of burning out. A slightly brighter circular area in the center of the screen is normal.
NOTE: Be very careful not to get any finger prints or damage either end of your NV tube. The surfaces are fragile and scratch easily. Lens cleaner should be used sparingly. Any residue left on these surfaces will be visible on screen while in operation.