Operation
5.8.6.11.9 Checksums
This option is only visible when the Request/Command M&C shell is active. If
enabled, then the beginning of each line to and from the ACU has a 2-character
checksum which is the one's complement of the sum, modulo 256, of the
characters on the line. This does not include the first space after the checksum,
nor does it include the carriage return at the end of the line.
5.8.6.11.10 Screen lines
This option is only visible when the Menu Tree M&C shell is active. It limits the
number of lines output when HELP is requested across the MT M&C. The user will
then be prompted for MORE help. If set to 0 (zero), the MORE function is disabled.
5.8.6.12 Remote Port Configuration
The parameters in the Remote port configuration... menu control remote
communications with the 7200 ACU via its serial port(s). The standard ACU has
seven ports: two EIA/TIA-232E ports; (J4 and J15) and five EIA/TIA-422B ports
(J16-J20).
The 7200 ACU supports several distinct "shells", or command interfaces:
• Disabled – This means the port is unused. If a port is set to Disabled, it will not
respond to any input, nor will it generate any output.
• RC M&C - The Request/Command M&C is a command-line monitor and control
interface to the ACU, typically used for computer control applications.
• MT M&C - The Menu Tree M&C is a command line monitor and control interface
to the ACU, typically used for remote control applications. The MT M&C is
more operator friendly than the RC M&C.
• Visual - This is the menu-driven user interface as shown on the front panel of
the ACU. This is only functional with an optional 7200 Remote Control Unit.
• DTR – Interfaces to a Digital Tracking Receiver.
• TRL – Interfaces to a TRL Tracking Receiver.
• 253_REC – The serial interface allows the ACU to control frequency and
bandwidth of the Model 253 Receiver.
NOTE: Only one port may be set to any of the following at any given time:
TRL, DTR, or 253_REC. The editor will not allow a tracking receiver to be
selected if another port is already using one.
5-73
To Next Page
Loading...