Dc Voltage Requirement; Warnings About Shorting Dc - X-Digital System PRO4 User Manual

2.4.1 DC Voltage Requirement

You may need to have the PRO4 receiver supply DC voltage to either an LNB or a block
down-converter (used after an LNA). If this is the case, the user must change the
receiver's LNB on/off settings using the front panel display. For directions on how to use
the front panel display, see Chapter 4 of this manual. If, however, you have another
receiver that receives the L-Band version of the satellite signal (9500-14500MHz) then
you may use a splitter with DC blocking circuitry to get the signal to the PRO4 receiver.
In this case, set the LNB Voltage setting to off.

2.4.2 Warnings About Shorting DC

Caution!
If the DC Voltage is shorted during installation, transient voltage may damage the
Demodulator. In the case of a short, over-current protection circuitry will shut down the
LNB supply. When this occurs, it is important to disconnect the receiver as soon as
possible. If there is a "dead" short in the cable connecting the receiver to the satellite
dish, the unit will not function properly. Remove the power cord from the rear of the unit
and then check the cable connecting the receiver to the satellite dish to make sure it has
not been damaged and is installed correctly. Finally, reinstall the power cord and proceed
with unit setup.
X-Digital Systems
XDS-PRO4
If the LNB Voltage mode is ON enabled, be careful not to short
the signal. The voltage on this line is approximately +24V DC.
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R830001-1060 Rev B