Comtech EF Data UT-4579 - Manual (Page 66)

UT4579 X-Band Up Converter MN/UT4579.IOM
Remote Control Rev. 0
50
B.3.2.2 EIA-232C
To control by using the EIA-232C interface, one EIA-232C port on the monitor and
control computer is required for each backup converter. Virtual addressing must be
established by command. All converters including the backup converter must be in the
Redundancy Mode.
B.4 A DDRESSES
All Converter is addressed in a command by the Device Address. The Device Address
consists of a physical address or a physical address plus a virtual address.
B.4.1 P
HYSICAL
A
DDRESS
Each converter in the system must have a unique physical address regardless of the
access method used. The physical address consists of a string of 1, 2 or 3 numbers from
1 to 255. The physical address is entered into a converter via the front panel. For Direct
Access, the physical address is the only address required to command a converter. A
backup converter or a stand-a-lone converter can only be accessed with a physical
address.
Example: 10 Addresses
converter whose physical address is 10.
B.4.2 V IRTUAL A DDRESS
In order to access a converter controlled by a backup converter indirectly, a virtual
address is required. A virtual address is appended to the physical address of the backup
converter with a "V". The virtual address is a number from 1 to 12 and corresponds to
the position of the active converter from the backup converter and is assigned by a
configuration command.
Example:
10V3 Addresses the third converter controlled by the backup
converter whose physical address is 10.