Comtech EF Data DST - Manual (Page 8)

Digital Satellite Terminal System Revision 2
Preface MN/DST.IOM
iv
3.5 BUC Installation .........................................................................................................................................3–6
3.5.1 Mounting Kits ..........................................................................................................................................3–6
3.5.2 Installation................................................................................................................................................3–9
3.6 Spar Mount ...............................................................................................................................................3–10
3.6.1 Ku-BUC Spar Mount, Typical NJRC ....................................................................................................3–10
3.6.2 Ku-Band Spar Mount Typical Terrasant ................................................................................................3–11
3.6.3 C-Band Spar Mount, Typical .................................................................................................................3–12
CHAPTER 4. LOW NOISE BLOCK DOWN CONVERTER................................................................4–1
4.1 Description ..................................................................................................................................................4–1
4.1.1 Options.....................................................................................................................................................4–2
4.2 LO, Mix and Spectrum Settings (LNB) ....................................................................................................4–3
4.2.1 C-Band .....................................................................................................................................................4–3
4.2.2 Ku-Band...................................................................................................................................................4–4
4.3 Low Noise Block (LNB) Converter ...........................................................................................................4–5
4.4 LNB Installation .........................................................................................................................................4–7
4.4.1 LNB Tooling ............................................................................................................................................4–7
4.4.2 C-Band .....................................................................................................................................................4–7
4.4.3 Ku-Band...................................................................................................................................................4–7
4.4.4 Mounting Kits ..........................................................................................................................................4–8
4.4.5 LNB Installation.......................................................................................................................................4–8
4.4.6 TRF Installation .......................................................................................................................................4–9
4.5 Cable Installation......................................................................................................................................4–10
CHAPTER 5. OPERATION .................................................................................................................5–1
5.1 Initial Operation .........................................................................................................................................5–1
5.1.1 Prior to Turning On Power.......................................................................................................................5–1
5.1.2 Initial Power Up – Modem Only..............................................................................................................5–2
5.2 LO, Mix and Spectrum (Inversion) Settings ............................................................................................5–3
5.3 Applying Power To The BUC....................................................................................................................5–4
TX Side Setup:............................................................................................................................5–5
5.4 Initial Operation of the Modem with the ODU and LNB .......................................................................5–5
RX Side Setup:............................................................................................................................5–5
APPENDIX A. SELECTING LNBS FOR USE WITH L-BAND MODEMS .......................................... A–1
A.1 Introduction ...............................................................................................................................................A–1
A.1.1 Comparing LNBs................................................................................................................................A–1
A.1.2 Carrier Spacing And Frequency Uncertainty......................................................................................A–2
A.1.3 Frequency Uncertainty Budget ...........................................................................................................A–3
A.1.3.1 Uncertainty For 0.02 ppm Modem and 0.02 ppm BUC .................................................................A–3