Wohler AMP2-VSD User Manual page 14

AMP2-VSD and AMP2-VSDA User Manual P/N 821581 Rev-B
H
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)
I
AES Input Level Gain Calibration DIP Switch
Input Level Gain Calibration, the analog level which corresponds to a given digital input value, is settable via this DIP
switch. The factory setting is +4 dB (analog) = -20 dBFS (digital). See the silk-screened chart on the rear panel or the
diagram below for settings.
J
Converted Analog Out Connectors (1-4)
These four Phoenix connectors output Analog signals converted from the selected digital inputs (but not the analog
inputs). These ouputs are not affected by the position of the Analog/Digital Source Select Switch (Item 7, page 8).
These 3-pin male Phoenix connectors are configured for a balanced low impedance connection. Phoenix connector pin-out
information is silk-screened just above these connectors on the rear panel (see Figure-2b).
K
Analog Input Connectors (CH. 1 - CH. 4)
These four 3-pin female XLR connectors accept standard analog audio signals and are configured for balanced 70K Ω
connections. For XLR connector pin-out information, see the diagram under Item F on page 12. Note that the Analog
inputs are monitored only when the Analog/Digital Source Select Switch (Item 7, page 8) is set to ANALOG.
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Rear Panel Features
Term. 1 Term. 2 Term. 1
1 2 3 4
IN 1
Terminated
Unterminated
Note: Positions S2 and S4 of DIP switch are not used.
© 2004 Wohler Technologies Inc. ALL rights reserved
(Continued)
AES Input 2 Termination (919050)
Term. 2 Term. 1
1 2 3 4 1 2 3
IN 1
IN 2
Unterminated
Term. 2 Term. 1 Term. 2
4 1 2 3 4
IN 2
Terminated
Section 2: Operation