Omicron CMC 850, Руководство пользователя

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11
Connections and Interfaces
5.2.2 USB Ports
The lower USB port (USB type B) at the CMC test set’s standard interface NET-2 board holds a USB
port to connect CMC 850 to your computer. To ensure the required EMC compatibility, we strongly
recommend to use the OMICRON-supplied cable, only.
The upper USB port (USB type A) at the CMC test set’s standard interface NET-2 board is meant for
future use of USB peripherals, such as memory sticks, etc.
For the technical data of the USB port → chapter 7.4, "Technical Data of the Communication Ports" on
page 20.
5.2.3 ! Button
The ! button enables you to recover from unsuccessful software image downloads or other
emergency situations. To start a new software image download, press the
! button with a
pointed tool or a paper clip while powering-up the CMC. In that case, the test set will not start as
usual but wait for a new software image download.
5.2.4 Associate Button
The Associate button has the following functions:
• Associate with controlling computer
An Ethernet communication port enables you to communicate with any CMC available on the
network. This may lead to dangerous situations where a user accidentally connects to a device
located on a desk of somebody else, emitting unsafe voltages and endangering the person working
there.
To prevent such a situation, a special mechanism is integrated into CMC 850 that allows only
“authorized” clients to control the test set. By using the Associate button, the test set is registered
for use with a specific host PC. The test set issues voltages and current only when it is associated
to the client requesting this. The association process can be initiated by
OMICRON Device Link
(→ “Setup and Operation” on page 16). For more details about this process, refer to the Help of the
according tool.
For the association the Ethernet hardware address (MAC) of the controlling computer is
remembered. Consequently, if the network interface on the computer has changed,
CMC 850 has
to be associated whenever the MAC address changes.
• Reset IP Configuration
If the Associate button is pressed while powering up the CMC test set, the IP configuration of the
network interfaces is reset to factory default, which is DHCP/AutoIP for both network interfaces. It
may be necessary to reset the IP configuration in this way to recover from settings with conflicting
static IP addresses.
!
Associate