Operation Manual

29
DL351 Modular I/O
Operator Manual
Appendix C: I/O Modules
There are eight module slots (A to H) into which any combination of the following
modules can be fitted:
• DL441 analogue input module; see “DL441 analogue input module” on page 29.
• DL442 analogue output module; see “DL442 analogue output module” on page 30.
• DL443 analogue insert input/output module; see “DL443 analogue Jack I/O module”
on page 30.
• DL452 digital in/out (AES/EBU) module; see “DL452 digital I/O module” on page 31.
Details of how to replace a module can be found in Appendix D “Replacing An I/O
Module”.
DL441 analogue input module
The DL441 analogue input module provides eight balanced line (or mic) inputs. Its rear
panel houses eight input XLRs, each with a check and a 48V LED.
The line inputs may be used as simple unity gain inputs to the PRO6, such as insert
returns. However, there is also provision for gain adjustment in 5dB steps from -5dB to
+40dB. This allows very high signal levels to enter the system and means that the
same hardware can be used for mic inputs, if required by the system.
When used for microphones the input can also provide 48-volt phantom power.
1 Eight XLR analogue mic/line inputs.
2 Green check LED illuminates to show
when a channel is selected on a console.
These are controlled by the console and are
used as a visual aid to locate specific
connectors.
3 Red 48V LED illuminates to show that 48V
phantom voltage is on.
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2
3