If the BUC Local Oscillator (LO) reference fails or drifts outside of the capture range, a
“BUC alarm” signal will be reported on the optional CPI remote panel or through the
supplied “Setup & Remote software.” The alarm will be reported via the CIF port, but the
amplifier will take no action. Alternatively, the BUC alarm can be set to a latched fault
via a user setting in the CIF protocol (using the supplied utility software or the 1 RU
remote control panel). In the event that the BUC LO becomes unlocked, a fault will be
reported, and the amplifier will inhibit RF and shut down HV to the TWT. A reset
comand will restore the amplifier to normal operation once the fault has been cleared.
Figure 1 (below) shows the conventional satcom terminal with customer analog and
digital information passing through a physically stand-alone modem, upconverter,
downconverter, HPA and LNA. All of the equipment except for the LNA is installed
indoors, with the high power microwave transmit signal delivered to the antenna via low
loss waveguide, and the amplified microwave receive signal from the LNA delivered to
the downconverter via low loss coax cable. In this system, there are three high stability
crystal reference oscillators and four synthesized frequency generators, contained in five
physically separate pieces of equipment.
If the BUC Local Oscillator (LO) reference fails or drifts outside of the capture range, a“BUC alarm” signal will be reported on the optional CPI remote panel or through thesupplied “Setup & Remote software.” The alarm will be reported via the CIF port, but theamplifier will take no action. Alternatively, the BUC alarm can be set to a latched faultvia a user setting in the CIF protocol (using the supplied utility software or the 1 RUremote control panel). In the event that the BUC LO becomes unlocked, a fault will bereported, and the amplifier will inhibit RF and shut down HV to the TWT. A resetcomand will restore the amplifier to normal operation once the fault has been cleared.Figure 1 (below) shows the conventional satcom terminal with customer analog anddigital information passing through a physically stand-alone modem, upconverter,downconverter, HPA and LNA. All of the equipment except for the LNA is installedindoors, with the high power microwave transmit signal delivered to the antenna via lowloss waveguide, and the amplified microwave receive signal from the LNA delivered tothe downconverter via low loss coax cable. In this system, there are three high stabilitycrystal reference oscillators and four synthesized frequency generators, contained in fivephysically separate pieces of equipment.
การแปล กรุณารอสักครู่..
