Wohler AMP2-VSD User Manual page 12

AMP2-VSD and AMP2-VSDA User Manual P/N 821581 Rev-B
Please refer to Figure-2b on the facing page to familiarize yourself with the rear panel features of the AMP2-VSD and AMP2-
VSDA 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 5, page 8) will glow GREEN to indicate operating voltages are present.
B
AES Input Unbalanced BNC 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 7, page 8) is set to DIGITAL and the AES/SDI Digital Source Select Switch (Item 13,
page 10) is set to AES.
Note: Do not input signals simultaneously to the BNC and XLR AES input connectors of the same channel (i.e. BNC
connector AES IN 1 and XLR connector AES IN 1).
C
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 D) 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).
D
SDI Input and Output Connectors
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 7, page 8)
is set to DIGITAL, and the AES/SDI Digital Source Select Switch (Item 13, page 10) is set to SDI.
The SDI OUT loop-through connector outputs a reclocked (regenerated) copy of the signal entering the SDI IN input
connector. This female BNC connector is configured for an unbalanced, 75 Ω connection.
E
Level Meter DIP Switch
This DIP switch sets the Line Level Calibration, Reference Level, and PPM/VU Display Mode for the level meter LED
bargraph displays on the front panel. See page 23 for for setting information.
F
Selected Analog Output Connectors
These two 3-pin male XLR connectors are analog outputs of the selected source(s) as assigned to the left and right
speakers. The left connector outputs the left channel (Channel A) and the right outputs the right channel (Channel B).
Both connectors are configured for low impedance connections and the output signals are not affected by the volume/
balance controls or headphone mute. For XLR pinout information see the diagram below.
Pin-2
High (+)
G
AES Input Balanced XLR 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 7, page 8) is set to DIGITAL, and the AES/SDI Digital Source Select Switch (Item 13,
page 10) is set to AES. For XLR pinout information see the diagram under Selected Analog Output Connectors (Item
F).
Note: Do not input signals simultaneously to the XLR and BNC AES input connectors of the same channel (i.e. XLR
connector AES IN 1 and BNC connector AES IN 1).
12
Rear Panel Features
Pin-1
Gnd
(Shield)
Pin-3
Low (-)
Female XLR Pinout
© 2004 Wohler Technologies Inc. ALL rights reserved
Pin-1
Gnd
(Shield)
Low (-)
Male XLR Pinout
(Continued)
Section 2: Operation
Pin-2
High (+)
Pin-3