Night Optics TG-7 Thermal Goggle/Binocular (30Hz) - Manual (Page 12)

CHAPTER 5. SYSTEM OPERATIONS
The NO/TG -7 is designed to be used as a hand-held, helmet-mounted or headmounted thermal system
that runs on battery or external power for extended operations. It is also unique in allowing the user to
stream active video to a laptop, video display or other device while being used. Because the NO/TG-7
does not have menu options, it is very user friendly.
5-1. Display Graphics
There are three indicators seen while viewing the display with the screen active: temperature, crosshair
and low battery.
• Temperature: Located in the upper right corner of the display screen. Displays the temperature of the
scene that is in the center field of view dependent on the distance between the viewer and the object
being viewed. It is not the actual temperature of an object at its location. This can be used to help
locate an object not readily viewable.
• Battery: Visible in the lower right hand corner of the display screen. Indicates the approximate level
of remaining battery power.
5-2. Operation with External Power
There are 2 button switches located on the right side of the TG-7 goggles. They control the 2x
digital magnification, black hot/white hot polarity, brightness and contrast.
• Polarity/Contrast Control: Lower Button (fig. 6a) With one button push the scene changes
from hot objects appearing white against a darker background to hot objects appearing dark
against a lighter (white) background. Contrast is activated by holding the button down until a
red, slowly blinking LED is seen in the left eyepiece at the 9 o’clock position. While the LED is
blinking use either button to increase or decrease the level of contrast between Black/white
• Digital 2x Magnification/Display Brightness: Upper Button (fig. 6b) One button push will
magnify the scene by 2 power (2x). Display brightness is activated by holding the button down
until a red, rapidly blinking LED is seen in the left eyepiece at the 9 o’clock position. Adjust the
display brightness by while the LED is blinking.
Note: Control will revert back to Polarity/Digital Magnification if no adjustments are made for
approximately 2 seconds.
5-3. Operation with External Power
The NO/TG-7 can be powered for extended periods of time by the external power cable attached to a
source between 6-24 VDC. The internal batteries need not be removed during this operation. Before
attaching the EPC (fig. 5b) to an active external power source - e.g., cigarette lighter, vehicle power port,
or power converter/inverter - ensure that the NO/TG-7 is turned completely off!!!
Sequence for connecting external power:
1. Turn power switch on NO/TG-7 to OFF position.
2. Connect the IPVC to the external IPVC jack (fig. 6c); observe proper alignment of the plug and jack.
3. Connect the EPC to the “12V DC IN” port on the IPVC.
4. Connect the EPC to the external power source port on the IPVC.
5. Turn on the NO/TG-7.
WARNING
Do not connect the NO/TG-7 to any external power source while the unit is turned ON.
Sequence for disconnecting external power: Reverse the connection sequence to properly disconnect
external power.