Datasheet

Configuration Switches
2-10 SHARC Audio EZ-Extender Manual
Audio In3 Right Selection Switch (SW12)
The audio selection switch (SW12) connects the right channel of the In3
line, connected to the AD1939’s ADC6 circuit, to either the single-ended
RCA connectors or the differential DB25 connector. By default, the
switch is set up to use the RCA connectors for audio in. The switch circuit
is connected to AD1939B (codec B). To use the standard, off the shelf
DB25 connector to XLR cables, change the switch to the differential set-
ting; see Table 2-6. See also “Differential In/Out Connectors (P1–5)” on
page 2-18.
Audio In4 Left Selection Switch (SW13)
The audio selection switch (SW13) connects the left channel of the In4 line,
connected to the AD1939’s
ADC7 circuit, to either the single-ended RCA
connectors or the differential DB25 connector. By default, the switch is
set up to use the RCA connectors. The switch circuit is connected to
AD1939B (codec B). To use the standard, off the shelf DB25 connector
to XLR cables, change the switch to the differential setting; see Table 2-7.
See also “Differential In/Out Connectors (P1–5)” on page 2-18.
Table 2-6. Audio In3 Right Selection Switch (SW12)
SW12 Position Single-Ended Mode
RCA IN (Default)
Differential Mode
DB25 IN (P1)
SW12.1 ON OFF
SW12.2 OFF ON
SW12.3 ON OFF
SW12.4 OFF ON
SW12.5 ON OFF
SW12.6 OFF ON