MPS-Series – Installation Guide
U-0664-0174.doc – Issue: 07 complete, approved
Page 21 of 24
Plug Contact Signal Description
Tip LEFT CHANNEL I/P Unbalanced stereo left channel input
Ring RIGHT CHANNEL I/P Unbalanced stereo right channel input
TRS
Sleeve GROUND
−
Ground
Tip AUDIO+ I/P Balanced audio input +
Ring 1
− − −
Ring 2 AUDIO- I/P Balanced audio input -
TRRS
Sleeve GROUND
−
Ground
TIP
RING
SLEEVE
TRS JACK PLUG
TIP
RING 1
RING 2
SLEEVE
TRRS JACK PLUG
⑦
Audio Input/Music
3.5 mm jack
1) TRS plug: this input can be used for background music input (standard 3.5 mm
stereo jack input internally mixed to mono)
2) TRRS plug: this input can be used for connection of a balanced audio source
Plug Contact Signal Description
Tip CONTACT INPUT I/P Contact input (contact closure to ground,
internal 10 kΩ pull up to +3.3 V)
Ring CONTACT OUTPUT O/P Contact output (open-collector)
TRS
Sleeve GROUND
−
Ground
TIP
RING
SLEEVE
TRS JACK PLUG
⑧
I/O
Contact Input and Output
3.5 mm jack
Single contact output provided twice on two connectors
Plug Contact Signal Description
Tip +5V OUTPUT O/P Low current supply output (50 mA max.)
Ring CONTACT OUTPUT O/P Contact output (open-collector)
TRS
Sleeve GROUND
−
Ground
TIP
RING
SLEEVE
TRS JACK PLUG
⑨
I/O
Contact Output
3.5 mm jack
1) Single contact output provided twice on two connectors
2) Low current supply output only available from Build Standard 4 or later
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