Terrasat IBUC 3, Operation Manual

Page: 45 / 236

General Requirements
|
3-5
Engineered to Endure
for each. Power supplies have an autoranging AC front end that works with both
115 VAC and 230 VAC.
Note:
The IBUC is configured at the factory to be floating. Ensure that the correct polarity is
applied to any unit.
Indoor Power Supply
Terrasat offers a 1000 watts indoor power supply unit (PSUI) which provides 48 VDC
power. The 1000 watts PSUI can power C - band and X - band units through 125 watts,
Ku - band units through 80 watts, and Ka - band units through 40 watts. Each indoor
PSUI is packaged in a rack - mountable chassis which occupies one rack unit (1.75 in.)
of space. The indoor PSUI is shipped with a mating connector for DC power and a
power cord for AC mains.
Note:
AC transients and surges can cause data transmission errors and loss of
synchronization in the modem and/or the ODU. Take proper precautions to ensure
uninterrupted service.
Grounding
Terrasat recommends the following grounding and lightning protection:
• Cable Shielding
Shield currents can be eliminated with proper techniques. A grounding strap at the
end of the coaxial and data cables should be connected to the ground lug at the
antenna base with #4 gauge copper wire. This provides a path of least resistance
prior to entering the equipment.
Table 3.2
Terrasat Outdoor Power Supplies
Model Output Power Application
PSUI-948-0250S-4 250 W
• C-band up to 25 W
• X-band up to 25 W
• Ku-band up to 16 W
• Ka-band up to 16 W
PSUI-948-600-4 600 W
• C-band up to 80 W
• X-band up to 80 W
• Ku-band up to 50 W
• Ka-band up to 40 W
PSUI-948-1000-4 1000 W
• C-band 100 W to 125 W
• X-band 100 W to 125 W
• Ku-band 60 W to 80 W
PSUI-948-600-4 1200 W
• C-band 150 W to 200 W
• X-band 150 W to 175 W