Mast Position Definition; Mast Component Descriptions - Will Burt Night Scan Chief Series Operating Instructions Manual

NIGHT SCAN CHIEF
OPERATING INSTRUCTIONS
3.3

Mast Position Definition

An actuator electrically tilts the mast from the stowed position to the 90° position. The mast is
then pneumatically moved by air pressure to the extended position. The following positions (see
Figure 3-1) are used throughout this manual:
• Stowed: is the horizontal position in which the mast is firmly seated in the saddle. This posi-
tion is sometimes referred to as the nested position.
• 90°: is the position that the mast electrically goes to from the stowed position. At 90°, the
mast has angled up, but no mast sections have risen. The mast remains retracted.
• Extended: is the partial or full raised position that the mast pneumatically goes after the 90°
position. In the extended position, some or all of the mast sections have risen.
3.4

Mast Component Descriptions

Figure 3-3, and Figure 3-4 show major components of the Night Scan Chief system.
Mast: The mast consists of concentric tube sections that extend as air pressure is applied. The
mast contains a coiled cord in the center for power and data. Optionally, an external Nycoil® may
be included (not show) for camera or other accessory cables.
RCP: The remote control positioner (RCP) pans and tilts the lights. The RCP does not become
active until the mast tilts up to the 90° position. Standard Night Scan Chief models come
equipped with a single tilt RCP. This means the left and right lights tilt together to direct at a
desired position.
PAGE 14 OF 80
Figure 3-1 Mast Positions
TP-4602001-T
DECEMBER 2020