TM 55-6930-212-10
Table 8-4. Digital Clock Controls
Control
Designation
Function
4/6-digit selector
SWi-1
Selects between 4-digit (down) and
6-digit (up) display (i.e., with or
without seconds).
12/24-hour selector
SW1-2
Selects between standard 12-hour
(up) format or 24-hour (military)
(down) format.
Time base selector
SW1-3
Selects between 50-Hz (down) and
60-Hz (up) line frequency.
Pushbutton disable
SW1-4
Enables (up) or disables (down)
time-set pushbuttons.
Fast set
SW2
Causes displayed time to advance
quickly.
Slow set
SW3
Causes displayed time to advance
slowly.
Hold
SW4
Freezes displayed time when up.
NOTE
A blue/green flip filter for NVG operations is also provided.
8-15
