# FAQ CSAMT / CSEM

## Dipole Orientation

In almost all cases you need two dipoles perpendicular to each other.

In case of **CSEM** and *near field* data you want to control the wire path (dipole cable).  
The L-shape layout comes close to this requirement.

![TX L Layout](../../media/faq/tx_l_layout.png)

Assuming following electrode positions

U North  
V East  
W South & East

we get following transmission angles

| Electrodes | Direction | Angle |
|------------|-----------|-------|
| U - W | North - South | 30° |
| V - W | East - West | 90° |
| (U - V) | | 150° |