Xicom XTU-400K, Operation And Installation Manual

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MNC-0000-015 6 of 8 Revision C
Operation Addendum, Block Upconverter
Setup and Turn On
Use this procedure to setup and operate the BUC.
1 Turn ON modem or signal source and set IF input power to -20
dBm ± 3 dB. Verify that the reference frequency is present and
at 2 ± 5 dBm power level.
These power levels are specified at the input of the HPA and must be
adjusted for any cable loss.
The phase noise of the reference frequency and signal source need to
be verified using Figure 1. All spurious signals such as IF and reference
frequency products must be below -60 dBc.
The output frequency accuracy depends on the accuracy of the refer-
ence and IF frequencies. The determining ratios for the frequency
Bands are:
•
Ku Band — (12.8 GHz / Reference Frequency) X Reference
Offset = Output Offset.
•
C Band — (4.90 GHz / Reference Frequency) X Reference
Offset = Output Offset.
•
X Band — (6.95 GHz/Reference Frequency) X Reference
Offset = Output Offset.
Table 1, BUC Output Frequency Plan
Band LO Freq IF Freq Output Freq
C 4.9 .950 5.85
1.550 6.45
1.750 6.65
X 6.95 0.95 7.9
1.45 8.4
Ku 12.80 .950 13.75
1.700 14.5
13.05 0.95 14.0
1.45 14.5
DBS 16.35 0.95 17.3
1.75 18.1
Notes:
1) RF = IF + LO
2) All frequencies in GHz.