ASL INTERCOM MPS Series Installation Manual page 21

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