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OMB-DAQ-TC-RACK User's Guide
Functional Details
16
POWER LED
The
POWER
LED turns on when you plug the power adapter into the OMB-DAQ-TC-RACK. If a Flash LED
command is sent from an application, the
Power
LED blinks five times.
ACTIVITY LED
2
The
ACTIVITY
LED turns on when there is a valid connection (USB or Ethernet) and blinks when a command is
sent to the OMB-DAQ-TC-RACK.
ALARM LED
The
ALARM
LED turns on when an alarm condition occurs.
OPEN TC LED
The
OPEN TC
LED turns on when there is an open thermocouple condition.
EXPANSION connector
Use the
EXPANSION
connector to connect the OMB-DAQ-TC-RACK to an OMB-DAQ-TC-RACK-EXP32
expansion device (sold separately) for applications that need additional analog/thermocouple input and digital
I/O channels. A 40-pin expansion cable is included with the OMB-DAQ-TC-RACK-EXP32.
Chassis ground connector
Provides a connection point (#6-32 threaded screw) for chassis ground. Connect this to an external grounding
source.
If the OMB-DAQ-TC-RACK is connected by USB or by a shielded Ethernet cable to grounded equipment,
connecting to an external grounding source is not needed since the USB/shielded Ethernet connection already
grounds the OMB-DAQ-TC-RACK and a connected OMB-DAQ-TC-RACK-EXP32.
RESET button
Press and hold this button to restore the OMB-DAQ-TC-RACK to its factory default network settings. Refer to
Restoring factory default network settings
3
Both the
POWER
and
ACTIVITY
LEDs blink in firmware upgrade mode. Refer to
Updating firmware
on page 10.