TM 5-2420-231-23-1
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USING THE FRONT DISPLAY PANEL CONTINUED
Turbine Speed Monitoring
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When the Turbine Speed Monitoring test mode is selected, the display screen illuminates "rP" (Figure 3, Item 1).
Figure 3. Turbine Speed Monitor.
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Upon releasing the mode button, the display screen will change from "rP" (Figure 4, Item 2) to the turbine speed in
rpm. The speed will be displayed as a two-digit number. This number is multiplied by 10 for speeds below 1,000
rpm. In Figure 4, the two-digit number 63 (Figure 4, Item 1) equals 630 rpm. For speeds above 1,000 rpm, the two-
digit number is multiplied by 100, and a decimal will be displayed.
Figure 4. Turbine RPM Speed Display.
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