OMB-DAQ-TC-RACK User's Guide
Installing the OMB-DAQ-TC-RACK
10
Setting up the OMB-DAQ-TC-RACK for communication across
networks
In order to communicate with the OMB-DAQ-TC-RACK from a computer connected to a different network –
such as over the Internet – you must change the network configuration of the network router.
In the following procedure, the OMB-DAQ-TC-RACK is installed on the
host
LAN, the computer is installed
on the
client
LAN, and it is assumed that you have you have successfully connected the device to a local
network.
Caution!
This procedure should only be performed by a network administrator or computer professional.
Incorrect settings can significantly disrupt a network.
1.
Determine the IP address of the device. If the address was assigned by DHCP, it is recommended you
change it to a static address by setting the default address to the address assigned and setting the device
network configuration to static.
2.
Configure the firewall/router to forward incoming traffic to the following ports to the IP address assigned
to the device:
o
UDP:54211 (discovery)
o
TCP:54211 (commands)
3.
On the computer connected to the client LAN, manually enter the WAN address of the host router, and
specify the ports that were forwarded to connect to the remote OMB-DAQ-TC-RACK.
Calibrating the hardware
Factory calibration
The Omega Engineering Manufacturing Test department performs the initial factory calibration. Return the
device to Omega Engineering when calibration is required. The recommended calibration interval is one year.
Field calibration
The OMB-DAQ-TC-RACK supports field calibration. Calibrate the device using InstaCal whenever the
ambient temperature changes by more than ±10 °C from the last calibration.
The following items are required to perform field calibration on a OMB-DAQ-TC-RACK:
a precision voltage source
a voltmeter
Each ADC (two ADCs per device) is measured at three points and a linear correction is calculated.
When prompted, enter the voltmeter reading to a precision of three decimal places.
Omega Engineering strongly recommends that you warm up the OMB-DAQ-TC-RACK for at least 20 minutes
prior to performing field calibration.
Restoring factory default network settings
To reset the network configuration settings to the factory default values, complete the following steps:
1.
Use a ballpoint pen to press and hold in the
Reset
button for at least four seconds until both the
Power
and
Activity
LEDs blink , indicating that the settings have been restored to the factory defaults.
2.
Release the button so the device continues startup with the default settings. If the button is released before
the two LEDs blink, the settings are not affected and the device starts up normally.
If InstaCal is open when default settings are restored, click the
Refresh Boards
button on the InstaCal toolbar
to reflect the changes.
