AR 1000W1000G, Руководство по эксплуатации и обслуживанию, Страница: 20 / 70

Model 1000W1000G
2 Rev A
PS3 is a +24V single output 1600W supply. It supplies the voltage to the A1 PreAmp and the drain voltage
for final modules A2, A6 - A10.
PS4 is a +24V single output 3200W supply. It supplies the drain voltage to final modules A11- A21.
1.4 PROTECTION CIRCUITS
Features incorporated into this unit include RF output level protection circuits, thermal protection circuits, and
internal DC level sensing and monitoring circuits that sense the voltage on each of the final and driver
amplifier modules. There is protection for the AC main circuit. All switching supplies are short circuit
protected. Reaching a threshold of either of the RF forward (incident) or reverse (reflected) power limit
adjustments, which are adjusted to approximately 1200 watts and 1000 watts respectively, will initiate
limiting, or smooth drive level fold-back, in a low-level stage of the amplifier chain. If the limiting circuits
cannot keep the amplifier’s levels below the limit threshold, the protection circuits will invoke a shutdown of
the main power supplies and low-level driver in the amplifier. Power amplifier modules are monitored for
both over-current and under-current. A
RESET
function is provided to permit re-powering of the amplifier in
case of transient or temporary activation of the amplifier’s protection circuitry. The low-level driver and
output amplifier subassemblies are thermally monitored.
The digital control panel monitors all fault signals, stores and displays any that are invoked and asserts the
required action.
1.5 INSTALLATION
Before proceeding, thoroughly inspect the amplifier for signs of physical damage that may have been incurred
during shipment and completely read the following installation and operating instructions, paying special
attention to all CAUTION notes.
1.5.1 Location
Select an operating location that will permit air to circulate freely around the amplifier’s cabinet. The
Model 1000W1000G utilizes air cooling and should be located where the normal flow of air into or exiting
from the unit will not be restricted, diverted, or re-circulated through the unit itself; in particular, the flow of
warm air exiting the rear of the amplifier should not be impeded.
Do not position the unit next to a wall or other equipment that would restrict the flow of air into the bottom of
the unit or out of the rear of the unit.