7
Output |
|
|
| Cable |
Pin 1 |
|
|
|
|
| 2 |
| 1 | Shield |
Pin 2 = (+) Signal |
| (+) Signal + Hum | ||
| 3 |
| ||
|
|
| ||
|
|
|
|
Pin 3 =
RFI and Hum
Fig. 3.1: Compensation of interference with balanced connections
Input
Ground
1 |
| 2 |
|
| 3 | Positive | (+) Hum + Signal |
|
|
| |
|
| Negative | |
|
|
| 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
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 |
|
tip |
|
hot (+ve) |
|
For connection of balanced and unbalanced plugs, ring and sleeve have to be bridged at the stereo plug.