Wohler AMP2-VSDA/AM User Manual page 12

AMP2-VSDA/AV and AMP2-VSDA/AM User Manual P/N 821576 Rev-B
Please refer to Figure-2b on the facing page to familiarize yourself with the rear panel features of the AMP2-VSDA/AV and AMP2-
VSDA/AM unit. The following sections describe these features and are referenced, by letter, to Figure-2b.
A
Power Connector
Attach a standard IEC-320 power cord between this connector and mains power (100 - 250VAC, 50/60 Hz). The front panel
Power LED (Item 4, page 8) will glow GREEN to indicate operating voltages are present.
B
AES Balanced XLR Input Connectors (AES IN 1 and AES IN 2)
These two 3-pin female XLR input connectors (AES IN 1 and AES IN 2) are meant to receive standard AES signals and
are configured for balanced, 110 Ω connections. Note that the unit will monitor these inputs only when the Analog/Digital
Source Select Switch (Item 8, page 8) is set to DIGITAL, and the AES/SDI Digital Source Select Switch (Item 10,
page 10) is set to AES. For XLR pinout information see the diagram under Selected Analog Output Connectors (Item J,
page 14).
Note: Do not input signals simultaneously to the XLR and BNC (Item C) AES input connectors of the same channel (i.e.
XLR connector AES IN 1 and BNC connector AES IN 1).
C
AES Unbalanced BNC Input Connectors (AES IN 1 and AES IN 2)
These two female BNC input connectors (AES IN 1 and AES IN 2) are meant to receive standard AES signals and are
configured for unbalanced, 75 Ω connections. Note that the unit will monitor these inputs only when the Analog/Digital
Source Select Switch (Item 8, page 8) is set to DIGITAL and the AES/SDI Digital Source Select Switch (Item 10,
page 10) is set to AES.
Note: Do not input signals simultaneously to the BNC and XLR (Item B) AES input connectors of the same channel (i.e.
BNC connector AES IN 1 and XLR connector AES IN 1).
D
AES Output (From SDI Input) Connectors (1 and 2)
These two "AES OUT-FROM SDI" BNC connectors output an AES digital signal as converted from the SDI IN input
connector (Item F) and function regardless of any monitor selection settings. The left AES OUT-FROM-SDI connector
(next to AES IN 1) outputs a signal converted from SDI sub-group 1 (channels 1/2) and the right AES OUT-FROM-SDI
connector (next to AES IN 2) outputs a signal converted from SDI sub-group 2 (channels 3/4).
E
AES Input Termination DIP Switch
This 4-position DIP switch module is used to set the termination characteristics for the AES inputs. In the event that either
of the two AES input channels is fed to downstream equipment, the associated DIP switch section (section 1 = AES IN 1
and section 3 = AES IN 2) must be placed in the UP (Unterminated) position. If there is no downstream equipment
connected, then the associated DIP switch section must be placed in the DOWN (Terminated) position. See below for a
diagram of termination settings. Note: Sections 2 and 4 of the DIP module are not used.
AES Input 1 Termination (919050)
Term. 1
F
SDI Output Connector
The SDI OUT loop-through connector outputs a reclocked (regenerated) copy of the signal entering the SDI IN input
connector (Item G). This female BNC connector is configured for an unbalanced, 75 Ω connection.
G
SDI Input Connector
The SDI IN input connector is meant to receive a standard SDI signal. This female BNC connector is configured for an
unbalanced, 75 Ω connection. The unit monitors sub-group 1 (channels 1/2) and sub-group 2 (channels 3/4) of SDI Group
ID #1. Note that the unit will monitor the SDI input only when the Analog/Digital Source Select Switch (Item 8, page 8)
is set to DIGITAL, and the AES/SDI Digital Source Select Switch (Item 10, page 10) is set to SDI.
12
Rear Panel Features
Term. 2 Term. 1
1 2 3 4 2 3
1
IN 1
IN 1
Terminated
Unterminated
Note: Positions S2 and S4 of DIP switch are not used.
© 2004 Wohler Technologies Inc. ALL rights reserved
AES Input 2 Termination (919050)
Term. 2 Term. 1 Term. 2
4 1 2 4
3
IN 2
Unterminated
(Continued)
Section 2: Operation
Term. 1 Term. 2
1 2 3 4
IN 2
Terminated