Siemens SIMATIC Field PG P4 Manual page 55

Connecting a Microphone
The 3.5-mm phono jack can be used to connect microphones. Pin assignment:
Fig. 3-7
For microphone recordings, select all Programs > Accessories > Entertainment
> Sound Recorder in the Windows Start menu.
Connecting a Headphone
You can connect headphones or active speakers with 3.5-mm stereo phono plugs
to this jack.
Loudness is controlled via taskbar button or all Programs > Accessories >
Entertainment > Volume Control in the Windows Start menu. The internal
speakers are switched off when a headphone is connected.
Fig. 3-8
SIMATIC Field PG P4 Manual
A5E00180080-04
Configuring And Operating The SIMATIC Field PG P4
NF
3.5-mm microphone plug
Pin assignment of the microphone plug
Left Right
3.5-mm headphone stereo phono plug
Headphone stereo phono plug
Mic Mic-
Power ground
GND
3-15