Chapter 4 _____________________________________________________ TTY Nonvolatile Setups
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CHAPTER 4
TTY NONVOLATILE SETUPS
The RVP900 provides an interactive setup menu that is accessed either
from a serial TTY, or from the host computer interface. Most of the
RVP900 operating parameters are viewed and modified with this menu,
and the settings are saved in non-volatile RAM, so that they take
immediate effect on start-up. This permits custom trigger patterns, pulse
width control, matched FIR filter specs, PRF, etc., to be configured by the
user in the field.
The TTY menu also gives access to a collection of graphical setup and
monitoring procedures that use an ordinary oscilloscope as a synthesized
visual display. The burst pulse and receiver waveforms are examined in
detail (both in the time and frequency domain) and the digital FIR filter is
designed interactively to match the characteristics of the transmitted pulse.
4.1 Overview of Setup Procedures
This section describes basic operations within the setup menus such as
making TTY connections, entering and exiting the menus, and saving and
restoring the configurations.
The setup TTY menu can be accessed by executing the following
command:
$dspx
The following prompt displays:
$dspx
Digital Signal Processor 'Chat'
Checking for code upgrades...Okay
(Type ^C to exit Chat Mode)
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