AR 10046249, Руководство по эксплуатации и обслуживанию, Страница: 25 / 58

Rev C 5
2. OPERATING INSTRUCTIONS
2.1 GENERAL
Operation of the Model 150/150AW1000 broadband amplifier is quite simple. The amplifier’s input signal,
whether swept or fixed in frequency, is fed into the jack marked RF INPUT, and the amplifier’s output signal
is taken from the jack labeled RF OUTPUT . The unit is turned on by activating the front panel POWER
switch. In the event of a major malfunction, protection is provided by a circuit breaker located on the unit’s
rear panel.
CAUTION:
The Model 150/150AW1000 Amplifier
will provide 100% of rated
power without foldback into a mismatched load. The amplifier will
operate without damage or oscillation with any magnitude and
phase of source and load impedance.
However, placing the amplifier in
the operate mode without a load connected to the output connector is not
recommended. It has also been designed to withstand, without damage,
RF input power levels up to twenty (20) times its rated input of 1mW.
However, signal levels higher than 20mW or transients with high peak
voltages can damage the amplifier. Also, accidental connection of the
Model 150/150AW1000’s output to its input (either through direct
connection or parasitic feedback paths) will cause oscillations that may
permanently damage the unit’s input transistors.
The 150/150AW1000 RF power transistors are protected from over temperature by sensing the chassis
temperature near the RF output transistors. In the event of a cooling fan failure or an airflow blockage, the DC
voltage will be removed from the RF stages, when the chassis temperature reaches approximately 70°C.
Normal operation can be resumed after the chassis temperature drops below 70° C.
2.2 AMPLIFIER FRONT AND REAR PANELS
Figure 2-1 shows the front panel of the Model 150/150AW1000 Broadband Microwave Amplifier. Figure 2-2
shows the rear panel of the Model 150/150AW1000 Broadband Microwave Amplifier.
Figure 2-1. Model 150/150AW1000 Front Panel Figure 2-2. Model 150/150AW1000 Rear Panel