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2.5
EXTERNAL INPUTS AND OUTPUTS
Name
RF Switch (Optional)
RF IN
VIDEO OUT
Balanced Audio Ch1 L
Balanced Audio Ch1 R
Balanced Audio Ch2 L
Balanced Audio Ch2 R
SERIAL 1
SERIAL 2
TRANSPORT OUT
LNB
GND
ALARM
CLOSURE 1
CLOSURE 2
AC Input
2.5.1
Balanced Audio Outputs
There are two audio channel outputs on the rear panel. Each Channel (Ch1 & Ch2) has a right
and left mono pair. Each of these pairs is a balanced, low-impedance audio output, with
terminals labeled Ò+, -, and com.Ó These are accessed through terminal strips which plug through
the rear panel into the main PWB. These strips have screw terminals which accept standard
audio cables.
Please note that audio should be terminated with 600-ohm loads for correct output levels.
2.5.2
FCC-Mandated Suppression of Radiated Emissions
In order to comply with the requirements of FCC Part 15 Subpart B, Class A emissions,
please read the following instructions on the protection of all output wiring and cabling:
For each monaural audio output (two per stereo channel), and for each alarm or user-
controlled relay output THAT IS USED, a single ferrite core must be used for EMI
emission suppression. The ferrite cores are supplied in the shipping container along with
the Unity4000 IRD. Details on assembly of the ferrite cores on the wiring are shown in
Figure
2. Note that each pair (or three, if the audio grounds are included) of wires must
pass through the core twice. Be sure that this is done as close to the removable screw-
terminal strip as possible. If minimal slack is used in the outer Òturn,Ó the ferrite core
should be properly restrained by the wiring alone
Table 12. Input and Output Connectors
Description
Four female Type-F RF INPUTS (1-4) and one female Type-F RF
OUTPUT (no powered ports)
Female Type F, L-band input, 950-2150 MHz
75 ohm female BNC, NTSC composite video output
Plug-in terminal strip, +/-/com for Left mono of Channel 1 stereo pair
Plug-in terminal strip, +/-/com for Right mono of Channel 1 stereo pair
Plug-in terminal strip, +/-/com for Left mono of Channel 2 stereo pair
Plug-in terminal strip, +/-/com for Right mono of Channel 2 stereo pair
Female 9 pin D Connector (local COMPEL_ , Printer, Modem or
Table 8
Terminal) (See
Female 9 pin D Connector (local COMPEL_ , Printer, Modem or
Table 8
Terminal) (See
Female 25 pin D Connector (Standard DVB Synchronous Parallel
Interface)
Plug-in terminal strip, LNB DC
Plug-in terminal strip, LNB DC current return
Plug-in terminal strip, alarm relay contacts
Plug-in terminal strip, network-controlled solid-state relay contacts
Plug-in terminal strip, network-controlled solid-state relay contacts
AC power connected through a standard IEC connector
for pin-outs.)
for pin-outs.)
Page 23 of 77
Page 23
UTY4000-003
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