CPI S4UIA, Инструкция по установке и эксплуатации

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L B
AND
BUC O
PTION
A
PP
.01040024 R
EV
.3 B-1
B-1
Appendix B
L-Band BUC Option
The Block Up-Converter (BUC) allows the user to operate the amplifiers with L-band input
frequencies from 900 to 1825 MHz typically. The L-band input signal can is converted to
microwave bands through the BUC using a frequency of local operation (F
LO
). The following
table provides an example of an L-band frequency to Ku-band frequency conversion over two
different Ku-band frequency ranges.
Table B-1. Example of L-Band To Ku-Band Conversion
Ku-Band Output Range (14GHz - 14.5GHz)
Input Frequency +FLO Output Frequency
0.95 GHz
1.2 GHz
1.45 GHz
13.05 GHz
13.05 GHz
13.05 GHz
14.00 GHz
14.25 GHz
14.5 GHz
Ku-Band Output Range (13.75GHz - 14.5GHz)
Input Frequency +F
LO
Output Frequency
0.95 GHz
1.325GHz
1.7 GHz
12.8 GHz
12.8 GHz
12.8 GHz
13.75 GHz
14.125 GHz
14.5 GHz
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 1RU remote control). In the event that the
BUC F
LO
becomes unlocked, a fault will be reported, and the amplifier will inhibit RF and
shutdown HV to the TWT. A reset command will restore the amplifier to normal operation once
the fault has cleared.