Using a Remote Unit
HE4000 Encoding System
Unless the remote settings are changed and the changes saved in non-volatile (flash) memory,
the HE4000 restores these default communications settings whenever the HE4000 is reset or
powered-up.
2.
Press the Enter key on the remote keyboard several times to generate a prompt (>) on
the remote display. Once a prompt appears on the remote display, successful
communication has been established between the HE4000 and the remote unit.
Once communications are established, the remote port parameters can be changed to a
faster operating speed.
If a prompt cannot be generated on the remote unit, follow these troubleshooting steps:
•
Ensure that the remote unit and the HE4000 are turned on and plugged into an active
AC outlet.
•
Verify that the baud rate and parity of the remote unit communications package
match the default factory setting of the HE4000 remote interface. Factory settings are
38400 baud, 8 data, no parity.
•
Verify that the cable between the terminal, the HE4000, and the Null Modem Adapter
are properly connected.
For assistance, contact the ComtechTV Customer Support Department.
4.1 Remote Communications Overview
The HE4000 can be configured, monitored, and controlled from a remote unit. Unlike front panel
operations, the remote unit has no selection menus; instead, the remote terminal is used to type
specific commands and parameters to communicate with the HE4000.
All HE4000 commands can be issued from a remote unit that is connected to the HE4000 remote
port. The remote unit can be any remote unit capable of asynchronous communications,
including a personal computer or ASCII terminal.
4.1.1 Command Types
The remote unit accepts two different types of commands:
•
Execute commands direct the HE4000 to perform a specified action, such as changing a
configuration parameter.
•
Query commands direct the HE4000 to display the current setting of a specific parameter
or to display current status information.
4.1.2 Command Elements
All commands consists of a command mnemonic, which is followed by a space, and the
command instruction.
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