7ULTRA-DI PRO DI4000 User Manual

Output

 

 

 

Cable

Pin 1

 

 

 

 

 

2

 

1

Shield

Pin 2 = (+) Signal

 

(+) Signal + Hum

 

3

 

 

 

 

(-) Signal + Hum

 

 

 

 

Pin 3 = (-) Signal

RFI and Hum

Fig. 3.1: Compensation of interference with balanced connections

Input

Ground

1

 

2

 

 

3

Positive

(+) Hum + Signal

 

 

 

 

 

Negative

(-) Hum + Signal

 

 

 

2 x Signal

 

 

 

= Signal + 6 dB

Unbalanced use of mono ¼" jack plugs

strain relief clamp sleeve

tip

sleeve (ground/shield)

Balanced use with XLR connectors

21

3

input

1 = ground/shield

2 = hot (+ve)

3 = cold (-ve)

12

3

tip

output

(signal)

 

For unbalanced use, pin 1 and pin 3

 

have to be bridged

Balanced use of stereo ¼" jack plugs

Fig. 3.2: Different plug types

strain relief clamp

 

sleeve

 

ring

 

tip

 

sleeve

 

ground/shield

 

ring

 

cold (-ve)

 

tip

 

hot (+ve)

 

For connection of balanced and unbalanced plugs, ring and sleeve have to be bridged at the stereo plug.