Installation guide

Last revision 12/00 3

Connections

SX-7

There are four external connectors located on the SX-7 audio board's metal mounting bracket. See

Figure 4. There is also one three-pin header (JP1) for an optional user-supplied headphone

connection, which would allow for a front panel headphone jack.

Pin Assignment

1Gnd

2Nc

3Nc

4 Right Out -

5 Left Out -

6Nc

7Nc

8 Right Out +

9 Left Out +

Figure 4: SX-7 Connector Locations

Audio Output:

Line:

Unbalanced - RCA jacks, 2VRMS/+6dBV max (digital clipping), with an impedance of 470

ohms

and a load impedance of > 10 k ohms

Balanced - Nine pin D connector, -16 dBm maximum, with an impedance of 47 ohms and

a load impedance of 600 ohms

Headphone:

1/4" Stereo Phone Jack, 0.5 VRMS into eight ohms

NOTE: We recommend using the balanced Analog I/O for professional broadcast

applications

Headphones

DB-9 Balanced Out

Unbalanced Right

Unbalanced Left

SX-7

JP1

LEFT

RIGHT

GND

DB-9

Female

Balanced Analog I /O Connector

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