Comtech EF Data KST-12000 - Manual (Page 102)

KST-12000 Ku-Band Satellite Terminal Revision 4
Theory of Operation MN/KST12000.IOM
5.6 Up Converter
The function of the up converter is to convert the 70 MHz IF signal used in the indoor
unit modem to a Ku-band signal to be sent to the high-power amplifier.
Refer to Figure 5-9 for a functional block diagram of the up converter.
5.6.1 Specifications
Input Frequency 70 MHz (± 18 MHz)
Input Connector SMA Female
Input Impedance 50 Ω
Input VSWR 1.25:1
Output Frequency 14.0 to 14.5 GHz
Output Connector SMA Female
Output VSWR 1.5:1
1 dB Compression +10 dBm
1st RF Local Oscillator Input
Frequency 1150 MHz
Level +8 dBm
Connector SMA Female
Return Loss 14 dB
Impedance 50 Ω
2nd RF Synthesizer Input
Frequency 12.75 to 13.28 GHz
Level +8 dBm
Connector SMA Female
Return Loss 10 dB
Impedance 50 Ω
5–18