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Installation
September 2012 – Revision 1.9 DRAFT
Page 18 of 68
3M™ Wireless Communication System Model XT-1
Installation Manual
Terminal Label
Definition and Connection Information
12V IN Incoming power supply from the transformer
ORDER POINT: All of the wires on this terminal block go to the order point or monitor speaker
12V OUT 12 VDC power supply
EARTH Earth ground
MIC+ Positive phase microphone wire
MIC- Negative phase microphone wire
GND Microphone wire shielding
MEN SPKR+ Positive phase order point speaker
MEN SPKR- Negative phase order point speaker
MON SKR+ Positive phase grill monitor speaker
MON SKR- Negative phase grill monitor speaker
GRT_CNL Active low talk
BACKUP INTERCOM: All of the wires on this terminal block go to the backup intercom
MIC+ Positive phase microphone
MIC- Negative phase microphone
GND Microphone wire shielding
MEN SPKR+ Positive phase order point speaker
MEN SPKR- Negative phase order point speaker
MON SPKR+ Positive phase of grill monitor speaker
MON SPKR- Negative phase of grill monitor speaker
VEH_NO Vehicle detector (normally open)
VEH_COM If backup intercom includes external vehicle detector module, use this terminal
GRT CNCL IN If installation includes external greeter module or timer module and backup
intercom has an active low GRT_CNL output, use this terminal
INTERBASE_1: All wires on this terminal block go to INTERBASE_1 terminals on the interconnected base station
IN+ Positive in (connects to positive out on interconnected base station)
IN- Negative in (connects to negative out on interconnected base station)
OUT+ Positive out (connects to positive in on interconnected base station)
OUT- negative out (connects to negative in on interconnected base station)
INTERBASE_2: All wires on this terminal block go to INTERBASE_2 terminals on the interconnected base station
IN+ Positive in (connects to positive out on interconnected base station)
IN- Negative in (connects to negative out on interconnected base station)
GND Ground
OUT+ Positive out (connects to positive in on interconnected base station)
OUT- negative out (connects to negative in on interconnected base station)
GND Ground
UART_TX UART (transmit) connects to UART_RX on interconnected base station
UART_RX UART (receive) connects to UART_TX on interconnected base station