59
LO( GHz)
LNB Voltage
22KHz Tone
KU-Band In (GHz)
L-band Out (MHz)
9.75
13VDC
OFF
10.70 ~ 10.95
950 ~ 1150
10.00
13VDC
ON
10.95 ~ 11.70
950 ~ 1700
10.75
18VDC
OFF
11.70 ~ 12.25
950 ~ 1500
11.30
18VDC
ON
12.25 ~ 12.75
950 ~ 1450
Table 6-5 Specifications of Universal LNB (Type N)
6.4
Example of Using Threshold Searching
If your desired carrier is not a DVB, you can use threshold searching using your modem.
Please refer to Figurse 6-4 and 6-5.
Desired satellite parameters
Satellite: Galaxy 18
Satellite Longitude: 123
°
W
Frequency TP: 12,140MHz
Polarity: Horizontal (Down link)
System encryption: NTSC
Symbol Rate: ?
NOTE
: If your desired desire satellite does not support the DVB, you will not be able to
track the satellite using the DVB carrier lock. In this case, you can try threshold searching
methods. Best searching reference is the ‘External lock & C/N threshold’ using modem
when desired carrier isn’t a DVB.
NOTE
: C/N of ‘External lock & C/N threshold’ is the AGC of modem. When define the
threshold value, operator has to check the value on LCD of ACU and then decide higher
value than noise level as threshold.
Summary of Contents for Ku-BAND RX
Page 1: ...INSTALLATION AND OPERATION MANUAL FOR VSAT VS61 Ku BAND TX RX ANTENNAS...
Page 15: ...7 Figure 3 1 Best Location Figure 3 2 Antenna Blockages...
Page 46: ...38 Figure 4 1 Step 1 of Reference Searching Definition...
Page 65: ...57 Figure 6 3 Co pol Kits Optional...
Page 120: ...d Appendix C Layout of Radome and Antenna Mounting Holes Figure C 1 Plastic Radome...
Page 121: ...e Figure C 2 FRP Radome Option...
Page 122: ...f...
Page 123: ...g Maritime Satellite Antenna...