User's Manual

044-05156 Rev C 21
Amplifier Module DC Indicators RF Switch Definition
Name Function
+27VDC
Indicator
Green LED. When lit, indicates that the +27 Vdc supply is greater than +21 Vdc and less than +31
Vdc. If the +27 Vdc indicator goes out, the DC Fail indicator will illuminate. This indicates that the +27
Vdc voltage dropped below +21 Vdc.
+15VDC
Indicator
Green LED. When lit, indicates that the +15 Vdc supply is greater than +12 Vdc and less than +17
Vdc. If the +15 Vdc indicator goes out, the DC Fail indicator will illuminate. This indicates that the +15
Vdc voltage dropped below +12 Vdc or increased above +17 Vdc.
+5VDC
Indicator
Green LED. When lit, indicates that the +5 Vdc supply is greater than +2 Vdc and less than +7 Vdc. If
the +5 Vdc indicator goes out, the DC Fail indicator will illuminate. This indicates that the +5 Vdc
voltage dropped below +2 Vdc or increased above +7 Vdc.
-5VDC
Indicator
Green LED. When lit, indicates that the -5 Vdc supply is greater than -7 Vdc and less than -2 Vdc. If
the -5 Vdc indicator goes out, the DC Fail indicator will illuminate. This indicates that the -5 Vdc
voltage dropped below -7 Vdc or increased above -2 Vdc.
RF ON
Switch
Three position switch:
Off (down position) - Turns off amplifier module.
On (center position) - Normal amplifier on position.
Reset (up position) - When toggled to reset position, all the red LED indicators will turn on one at a
time in sequence followed by all the green indicators one at a time in sequence; this will also reset the
fault latches. If the switch is held in the reset position, a microcontroller reset will occur. This will be
verified by the LEDs toggling state again. The switch is spring loaded to return to the normal ON
position when released. If a fault occurs and the MCPA is disabled, the alarms can be cleared and the
MCPA enabled by this reset position. The functions of the switch are disabled for five seconds after a
power-up condition.