AR 10013130, Руководство по эксплуатации и обслуживанию

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Model 2000TP2G8B
Rev - 11
3.2.3 Cooling Requirements
The TWTA is provided with a cooling fan. It is important that air movement around the rear of the unit be
unobstructed.
CAUTION:
For either bench or rack mounting, do not position the TWTA in such a
way that the air intakes or outlets are blocked, or that the exhaust flow is
directed into the intakes. See paragraph 3.5 for location of air intake and
air outlet. If the unit is rack mounted, make sure that the intake air is
45°C or below. If necessary, fabricate a short duct to direct the hot
exhaust air out of the rack enclosure. Great care must be taken to
minimize any flow restrictions. Avoid mounting heat-producing
equipment in the same rack, especially below the TWTA. Failure to
provide adequate cooling can result in the unit's shutting down from
overtemperature conditions.
The TWTA dissipates approximately 1,200 watts when in the operate mode at full RF power and maximum
duty cycle. Operation at lower duty cycles result in much lower total power dissipation.
3.2.4 AC Line Power Connections
AC line power connection to the amplifier is made at the Power Supply AC inlet J1, which is a female IEC-
320 connector. A line cord suitable for the type of AC outlet used, and consistent with local electrical codes,
must be obtained to mate with J1. Minimum wire size for the line cord is 14 gauge.
The amplifier will operate from any line voltage between 190 and 260 VAC.
3.2.5 RF Connections
The RF output connector is Type N.
CAUTION:
Never operate the TWTA without a matched output load rated for at
least 5000 watts peak, and 200 watts continuous duty. The TWTA is not
provided with an output isolator. While the TWTA is protected from
excessive reflected power by Foldback and VSWR circuits, it is poor
practice to power the unit up without a load or an antenna. Even with no
drive, "looping" oscillation can result in RF output if the TWTA is
operated without a load. The VSWR detection and Foldback circuit is
provided to protect the tube from progressive failure or mismatch of the
output load; it should not be relied on for protection from the absence of
a load.