Wohler ATSC/DVB-3/SDI User Manual page 14

ATSC/DVB-3/SDI User Manual P/N 821557 Rev-A
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.
A
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.
B
Option DIP Switch Module
This DIP switch is reserved for possible options still to be determined. You may disregard its settings.
C
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.
Pin-2
High (+)
D
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).
E
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.
F
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).
G
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.
14
Rear Panel Features
Pin-1
Gnd
(Shield)
Pin-3
Low (-)
XLR, 3-Pin Female
INPUT Pinout
© 2003 Wohler Technologies Inc. ALL rights reserved
Pin-1 Pin-2
High (+)
Gnd
(Shield)
Pin-3
Low (-)
XLR, 3-Pin Male
OUTPUT Pinout
Section 2: Operation