: Stereo headphone out for audio monitoring
IOIOI: Local Communications serial port
: Local Communications USB port
DC POWER: Green LED lights when the unit is powered and turned on.
MINOR ALARM LED: Yellow LED lights when a Minor Alarm occurs.
MAJOR ALARM LED: Red LED lights when a Major Alarm occurs.
COMMUNICATION: Blue LED lights when unit communicates externally.
USER ONLINE: Blue LED lights when a user connects to the unit.
ACTIVITY: Blue LED blinks when the unit is working properly.
Button: Allows the user to switch to Pause mode.
Indicator: Red LED blinks when the unit is in Pause and Local mode.
Button: Allows the user to switch to Local mode.
Indicator: Red LED blinks when the unit is in Local Mode.
NOTE: If MAJOR ALARM LED is blinking, the unit has lost communications with one of its Modbus slaves
1: XLR4 connector for 12 Vdc input power (or optional 48V input)
2: 3 A fuse
3: Ground screw terminal, for lightning protection 18
4: Power Fail (PF) Connector for a 9 Vdc wall transformer, to monitor main site power failures
5a: Champ 50-pin input/output connectors #1
5b: Champ 50-pin input/output connectors #2
6: Reach-through serial RS-232 port , for on-site ancillary equipment
7a: RJ-45 Ethernet jack #1 for IP connection to the outside world through the site LAN/WAN or the Internet
7b: RJ-45 Ethernet jack #2 for connections to other MEXM units or other on-site network-enabled equipment
8: RJ-11 telephone line jack, for the optional internal modem
9: RS-232 port, for external Hayes-compatible modem
10: USB host port, for data logging or other USB devices