Table 8-4. Digital Clock Controls

Figure 8-4. Digital Clock (Front View, Access Cover Removed)

Section II. TRAINING ASSISTANCE CAPABILITIES

TM-55-6930-212-10 Pyrometer and Thermocouple Tester Field Type N-3A Manual
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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

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