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Spectra VX
3
User’s Guide
that are below the discrimination threshold. This can help in tar-
get separation, especially in trashy areas, and can also help in
pinpointing targets. On the other hand, the increased target
responses can be overwhelming and create audio fatigue, espe-
cially for new users.
Mixed mode equally applies both the all-metal audio and
the discrimination audio to the speaker or headphones. In the
absence of targets, or for targets below the discrimination
threshold, the mixed-mode audio output will be the all-metal
response, and you will hear the all-metal threshold plus the all-
metal response of rejected targets. When an accepted target is
detected, the discrimination audio will take over and you will
hear the discrimination tone for the target; for a rejected target
you will still get an audio null. Due to a hardware limitation,
both audios cannot sound at the exact same time, so as the dis-
crimination audio comes in, the all-metal audio cuts out. This is
illustrated below.
When mixed-mode is selected, there are no additional set-
tings. By default, Tone ID is on, modulation is set to 1, and all-
metal VCO is on.
Pinpoint Mode
Although technically not one of the three major search
audio modes, pinpoint audio could be used for searching if you
Discrimination Audio
All-metal Audio
Target
Beep
Disc Threshold
Signal response