Robotron Pty Ltd G9P 用户手册
WiNRADiO G39DDC User’s Guide
100
Show Waterfall Timestamps
Invoking this option makes the waterfall spectrum display show time stamps,
making it possible to relate spectrum events to absolute time:
making it possible to relate spectrum events to absolute time:
Calibration
Since the Excelsior uses an accurate and stable temperature compensated
crystal oscillator with 0.5 ppm (parts per million) tuning stability, there is no real
need for calibration for most practical purposes. However, for the most
demanding user, a calibration facility still remains available:
crystal oscillator with 0.5 ppm (parts per million) tuning stability, there is no real
need for calibration for most practical purposes. However, for the most
demanding user, a calibration facility still remains available:
Such calibration can be done either manually, by entering a correction factor
for the reference oscillator directly, or using automatic calibration against a
known reference signal.
To calibrate to a peak, simply tune the receiver to a known reference
frequency (presuming a reasonably strong and steady signal). The frequency
difference between the peak and the receiver’s tuned frequency will be shown
as Peak offset.
To calibrate the receiver to the peak frequency, click on Calibrate to peak. If
successful, the peak offset will show as zero. Press OK to complete the
process.