Nautel FM10 - Ac;DC Power Supply Controls and Indicators

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Page 3-2
15 July 1997
Table 3-1 AC/DC Power Supply Controls and Indicators
PANEL MARKING/
REF FIG NOMENCLATURE FUNCTION
DES NO. USED IN TEXT
F1 MD-1
Exciter Fuse
Fuses 115 VAC supply to the exciter at 5.0 amperes.
A4CB1 MD-5
MAIN POWER
Applies the AC power source voltage to the main
power transformer when closed.
A4CB2 MD-5
PWR MDL A
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the 'A' PA switching power supply which
provides the DC supply voltage for the 'A' RF power
amplifier module.
A4CB3 MD-5
PWR MDL B
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the 'B' PA switching power supply which
provides the DC supply voltage for the 'B' RF power
amplifier module.
A4CB4 MD5
PWR MDL C
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the 'C' PA switching power supply which
provides the DC supply voltage for the 'C' RF power
amplifier module.
A4CB5 MD-5
PWR MDL D
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the 'D' PA switching power supply which
provides the DC supply voltage for the 'D' RF power
amplifier module.
A4CB6 MD-5
PWR MDL E
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the 'E' PA switching power supply which
provides the DC supply voltage for the 'E' RF power
amplifier module.
A4CB7 MD-5
PWR MDL F
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the 'F' PA switching power supply which
provides the DC supply voltage for the 'F' RF power
amplifier module.
A4CB8 MD-5
IPA
Applies unregulated B+ Volts (nominally 70 VDC) to
the input of the IPA switching power supply which
provides the DC supply voltage for the intermediate
power amplifier module.
A4DS1 MD-5
AC ON
When turned on, indicates AC power is being applied
to the power transformer.