Analog Levels: +4 Or -10 - Korg SoundLink DRS 1212 I/O Owner's Manual

Pci multi-channel audio interface

Table of Contents

Hold the 1212 I/O by its edges

Did we already mention that the 1212 I/O uses a whole bunch of delicate

electronic components? Well, OK, so we've said it again. To avoid

damaging those lovely little silicon jewels, always hold the 1212 I/O by the

edges of the card, or by the metal jack panel (where the connectors are).

Don't touch the electronic parts, the PCI connector pins, or any of the traces

on the board (those little silvery paths that run between the components).

There, we're done nagging now.

Analog levels: +4 or -10

The 1212 I/O's analog inputs and outputs can be conﬁgured for use with

either +4 dBu or -10 dBV signal levels, to allow clean interfacing with a

wide variety of equipment. You can even set the input and output levels

independently, if desired, so that you can record at -10 and play back at +4,

or vice versa.

The 1212 I/O ships from the factory conﬁgured for -10 input and output. If

you will be working with -10 levels, then you can jump ahead to the next

section, "Installing the 1212 I/O card in your computer," on page 5. If you

need to switch either inputs or outputs to operate at +4, read on.

Setting the analog levels

The nominal analog signal levels are set by several jumpers on the card's

circuit board. A jumper is a small black connector which ﬁts over a pair of

metal pins mounted on the board. The jumper makes an electrical

connection between the pins, just as if you were to solder a wire between

them. Unlike a wire, however, jumpers can be easily installed and

removed. The diagram below shows what they look like:

Jumpers, installed and removed

There are six jumpers on the 1212 I/O circuit board; each one is labeled

with a small "JP" (for "jumper") followed by a number. The upper group of

four jumpers, labeled JP1 through JP4, set the input level; the lower group

of two, labeled JP5 and JP6, set the output level. The locations of the

jumpers are shown in the diagram below.

Korg 1212 I/O

Jumper Removed (+4 dBu)

Jumper Installed (-10 dBV)

Installation

Table of Contents