© 2003 Wohler Technologies Inc. ALL rights reserved
14
ATSC/DVB-3/SDI User Manual P/N 821557 Rev-A
G
F
E
A
B
C
D
Please refer to
Figure-2b
on the following page to familiarize yourself with the rear panel features of the
ATSC/DVB-3/SDI
units.
The following sections describe these features and are referenced, by letter, to
Figure-2b
.
Rear Panel Features
Section 2: Operation
Power Connector
Attach the supplied IEC-320 power cord between this connector and mains power (
100 - 240VAC nominal, 50/60 Hz
). The
front panel
Power Indication LED
(
Item 10
, page 12) will glow GREEN to indicate operating voltages are present.
Option DIP Switch Module
This DIP switch is reserved for possible options still to be determined. You may disregard its settings.
Source 1 Input and Loop-Through Connectors (XLR)
The
SOURCE 1
XLR input is meant to receive either
AC-3
(Dolby Digital
®
) or standard
PCM
or
AES
signals. Both XLR
connectors are configured for a
balanced
connection (110
Ω
impedance). The
IN
XLR connector is a 3-pin female. The
LOOP
XLR connector is a 3-pin male. For pinout information see diagram below.
Source 1 Input and Loop-Through Connectors (BNC)
The
Source 1
BNC input is meant to receive either
AC-3
(Dolby Digital
®
) or standard
PCM
and
AES/EBU
signals. Both the
IN
and
LOOP
BNC inputs are configured for an
unbalanced
connection (75
Ω
impedance).
Termination DIP Switch Module
In the event that signals entering the
Source 1
inputs (
Item C
and
D
) are connected to downstream equipment, then DIP switch
section
1
of this module should be set to UNTERMINATED (
UP
). If there is
no
connection to downstream euipment, then
section
1
should be set to TERMINATED (
DOWN
).
Note:
Section
2
of this DIP switch is
not
functional in the
ATSC/DVB-
3/SDI
model.
Source 2 Input and Output Connectors (BNC)
The BNC
IN
connector is meant to receive standard
SDI
signals. The BNC
OUT
connector outputs a reclocked (regenerated)
copy of the signal entering the input. Both connectors are configured for
unbalanced
connections (75
Ω
impedance).
Selected Output (Analog) Connectors (Chan.A/Left and Chan.B/Right)
These two 3-pin male XLR connectors are
Analog
outputs of the input signals as selected for active monitoring through the
left
and
right
speakers (or headphones). The
left
CH.A(L)
connector outputs the
left
speaker channel (channel
A
) and the
right
CH.B(R)
connector outputs the
right
speaker channel (channel
B
). Both connectors are configured for low impedance
connections and the output signals are
not
affected by the
Volume
and
Balance
controls or
Headphone Mute
feature. For
XLR connector pinout information, see the diagram under
Item C
, above.
Pin-1
Gnd
(Shield)
Pin-2
High (+)
Pin-3
Low (-)
High (+)
Low (-)
Gnd
(Shield)
Pin-1
Pin-2
Pin-3
XLR, 3-Pin Male
OUTPUT Pinout
XLR, 3-Pin Female
INPUT Pinout
