Robotron Pty Ltd G9P 用户手册
WiNRADiO G39DDC User’s Guide
87
The Peak and RMS buttons select between peak and RMS values. The AVG
button applies a floating average with a one second time interval to smooth the
S-meter movement.
button applies a floating average with a one second time interval to smooth the
S-meter movement.
The S-meter is very selective, and acts only upon signals within the selected
demodulator bandwidth (gray-shaded area in the demodulator spectrum
display).
Please note that the actions of both the attenuator and preamplifier are
compensated for by the S-meter. This means that the S-meter always
displays the true value of the signal strength at the antenna input, within
the available measurement range. If the range is exceeded, either
Overrange or Underrange indicators are displayed in the S-meter.
demodulator bandwidth (gray-shaded area in the demodulator spectrum
display).
Please note that the actions of both the attenuator and preamplifier are
compensated for by the S-meter. This means that the S-meter always
displays the true value of the signal strength at the antenna input, within
the available measurement range. If the range is exceeded, either
Overrange or Underrange indicators are displayed in the S-meter.
Top Menu Bar
The top menu bar contains numerous ancillary functions of the Excelsior:
File
The File menu includes functions associated with file operations.
Did you know?
The word "file" was used publicly in the context of computer storage as early as
February, 1950. In an RCA (Radio Corporation of America) advertisement in Popular
Science describing a new "memory" vacuum tube it had developed, RCA stated: "...the
results of countless computations can be kept ‘on file’ and taken out again. Such a ‘file’
now exists in a ‘memory’ tube developed at RCA Laboratories. Electronically it retains
figures fed into calculating machines, holds them in storage while it memorizes new
ones - speeds intelligent solutions through mazes of mathematics."
February, 1950. In an RCA (Radio Corporation of America) advertisement in Popular
Science describing a new "memory" vacuum tube it had developed, RCA stated: "...the
results of countless computations can be kept ‘on file’ and taken out again. Such a ‘file’
now exists in a ‘memory’ tube developed at RCA Laboratories. Electronically it retains
figures fed into calculating machines, holds them in storage while it memorizes new
ones - speeds intelligent solutions through mazes of mathematics."