Crescend Technologies LLC P5XXUH1 Benutzerhandbuch
P5XXUH1
Power Amplifier User’s Manual
1. General Information.
Power Amplifier (PA) is a AB/C-class unit. It is intended for amplification of single carrier
phase (frequency) modulated (manipulated) narrowband signals.
The working frequency range lays between 450 MHz and 512 MHz for UH unit. Code “xx”
shows the input power range:
Code: R1 R2 R5 1 2 5 10 20
Range, W: 0.1-0.2 0.2-0.5 0.5-1.0 1.0-2.0 2.0-5.0 5.0-10 10-20 20-50
In the normal operating mode the minimum output power is 50 W.
Input VSWR is not greater than 1.8:1.
PA meets all FCC requirements to harmonic and spurious levels.
Input VSWR is not greater than 1.8:1.
PA meets all FCC requirements to harmonic and spurious levels.
The nominal power supply voltage is 13.8VDC.
DC current consumption does not exceed 12.5A at 13.8V
Working ambient temperature range lies from -30ºC to +60ºC.
DC current consumption does not exceed 12.5A at 13.8V
Working ambient temperature range lies from -30ºC to +60ºC.
Input and output power levels are set up in the factory. Customer has an opportunity to reduce
the output power, adjusting the special trimmer resistor in the unit, or picking up the value of outer
resistor, connected to PA control pin.
PA has automatic power control loop that provides the stability of output power during the
normal operation and all necessary changes of power in the case of load mismatch or unit
overheating.
the output power, adjusting the special trimmer resistor in the unit, or picking up the value of outer
resistor, connected to PA control pin.
PA has automatic power control loop that provides the stability of output power during the
normal operation and all necessary changes of power in the case of load mismatch or unit
overheating.
PA is intended for rack mounting in the standard 19” cabinet. The front panel is 7” high. The
deepness of unit does not exceed 5”.
Four LED at the front panel indicate the status of unit operation.
The hole in the side wall gives an access to the trimmer resistor, which allows reducing the
output power against the set value.
Four LED at the front panel indicate the status of unit operation.
The hole in the side wall gives an access to the trimmer resistor, which allows reducing the
output power against the set value.
There are two N connectors at the back of chassis.
There is power filtering DC connector at the back of chassis with two # 6-32 screws for “+”
pole and for “-“ pole.
There are 3 filters at the back of chassis that bring alarming signal, as well signals for the
outside power control.
The fan at the back side of unit performs the forced air cooling. Fan starts rotating, when RF
signal comes to the unit input.
pole and for “-“ pole.
There are 3 filters at the back of chassis that bring alarming signal, as well signals for the
outside power control.
The fan at the back side of unit performs the forced air cooling. Fan starts rotating, when RF
signal comes to the unit input.
2. Installation Guide.
2.1. Unit installation shall provide a proper air access to the unit; no obstacle for air is allowed
closer than 3” from fan.
closer than 3” from fan.
2.2. Copper wires # 12 AWG shall be use in DC power line. Wires shall be crimp to ring
terminals.
terminals.