AR 10044005, Руководство по эксплуатации и обслуживанию

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Rev B 9
2. OPERATING INSTRUCTIONS
2.1 GENERAL
Operation of the Model 5000A225A 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 5000A225A Amplifier is typically not critical in regard to
source and load Voltage Standing Wave Ratio (VSWR) and will remain
unconditionally stable with any magnitude and phase of source and load
VSWR. 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 +13
dBm (20 mW). However, signal levels higher than 20mW or transients
with high peak voltages can damage the amplifier. Also, accidental
connection of the Model 5000A225A’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.
2.2 CONTROL AND INDICATOR FUNCTIONS
The Model 5000A225A’s front panel is shown in Figure 2-1; the unit’s rear panel features are detailed in
Figure 2-2.
4
1 2
3
5
Figure 2-1 Digital Control Panel (DCP) Features
Item Title Function
1 POWER POWER control with indicator LED
2 DISPLAY Numerous parameter values and fault messages
3 ADJUST Adjust knob to change selected variables
4 INHIBIT, LOCAL, REMOTE Keylock Switch, 3-position; key removal in INHIBIT position only
5 RF INPUT RF input connector