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F-1
Optional L-Band BUC
F.1 Overview
The optional Block Upconverter (BUC) allows the user to operate the KHPA with L-band input
frequencies 900 -1750 MHz for Ku-Band and 950-1825 MHz for C-Band. The L-band input signal
can be translated to the following microwave bands:
1. C-Band:
5.85 – 6.425 GHz
5.85 – 6.65 GHz
5.85 – 6.725 GHz
2. KU-Band:
14.0 – 14.5 GHz
13.75 – 14.5 GHz
12.75 - 13.25 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 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.
The Local Oscillator reference can be supplied in one of three formats below:
•
Multiplexed Local Oscillator reference frequency on the L-Band signal through the type N
RF input connector.
•
An internal LO reference integrated into the BUC.
•
An external LO reference through a separate BNC connector.
D
.01023245 R
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OC
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Appendix F
THIS DOCUMENT IS THE PROPERTY OF COMMUNICATIONS & POWER INDUSTRIES.
REPRODUCTION OR RELEASE WITHOUT EXPRESS PERMISSION IS STRICTLY PROHIBITED
CHPA SERIES
F-1
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