Feed a calibrated signal generator into the required receiver BNC socket.
Follow the instructions on the HDSDR Smeter calibration window to set the S
meter level. This also adjusts the dBm level on the Spectrum display so an
alternative is to set the Spectrum display for the signal generator dBm level.
14 Possible problems with Windows 7 and Vista sound card setup
Windows Vista and Windows 7
may need the sound card
settings correcting if the
HDSDR display looks like a
mirror image about the centre.
Open the Windows Control
Panel and select Hardware and
Sound.
In Sound select Manage Audio Devices
