Figure 3-8. NM-108 BC CONTROLS
TABLE 3-1. NM-108 BC CONTROLS AND INDICATORS
ITEM
NO.
CONTROL /
INDICATOR
FUNCTION
1
Pivoted Shutter
Closes / opens the photoreceiver when placed in the highest / lowest
position.
2
Gain Control Knob Adjusts the brightness of the image.
3
Turn Switch
Switches on the NM-108 BC, when turned CW from OFF to ON
position.
NOTE:
Both ON and STB positions can only be entered if the switch is
unlocked by pushing the spring-loaded stop (5) before turning.
Switches the device to standby mode, when turned CCW from OFF to
STB (see note above).
Switches off the NM-108 BC, when turned CCW/ CW from ON/ STB
to OFF.
4
Focus Knob
Focuses the objective lens. Adjusts for sharpest view of the scene. The
total focus range is covered with 1.5 turn of the knob. Directions of
focus (sharper to softer) are designated by a double arrow on the knob.
5
Spring-loaded Stop
- Remote Control
Button
- Built-in LED
Indicator
Locks the turn switch in OFF position.
Activates/ deactivates the NM-108 BC in standby when pressed /
released.
PERMANENT RED GLOW in viewing area indicates excessive light
conditions. After 10 seconds the image intensifier tube will be cut off.
The NM-108 BC turns back again when moved away from the
excessive light.
FLASHING RED LIGHT in viewing area indicates a low battery. LED
flashes three times every 3 minutes.
