The Oxygen 5 mixer is fitted with VU / PPM meters.
VU meters respond to an average signal level, whereas
PPMs respond to peak changes (The PEAK LEDs are
activated by the shortest transient peak, but remain ‘on’ long
enough to provide easy recognition).
If a 1kHz sinusoidal signal is input to the mixer and the
amplitude adjusted such that the level at the master output
is 0 dBm, the meters will read 0 VU (the orange LED will
glow).
The VU meters are factory-calibrated and no further user
adjustement is allowed. PPM reading may be disabled (ref
to next Section).
A short cable with a 9 pins subD plug on each end (male and female) comes with the console. It is used to connect the
meterbridge to the mixer.
The LEFT pair of meters display PFL stereo signal, while the RIGHT pair display the Master signal.
The LEFT pair of meters can be also altered to show any combination of the Master output, the Sub output, Tuner input
or whatever is selected on the Control Room section of Monitor module when the “SELECTION TO METER” button is
pressed.
For example, if SELECTION TO METER is selected and the CONTROL ROOM has SUB selected, then the meters will
display the SUB signal. Of course, meters will also display the PFL signal, if PFL button is selected (see par. Errore.
L'origine riferimento non è stata trovata.)
The Meter comes from the factory with Meters ballistics set on ‘RMS’ mode.
However, on request, two additional
modes are
available: PPM and a PPM sub-mode, called PPM Fast, having faster response on the peaks.
Note that, even if RMS, PPM and PPM FAST jumpers are available on Meter board for relevant setting, switching from a
ballistic mode to the other ALWAYS requires trimmers on the Meter board to be re-tuned.
Please contact Yr local Axel Technology dealer for support on that
18.2 METERBRIDGE SETTING
PPM reading can be disabled via the Jumper J5 situated on the LED board inside the meterhood, behind LEFT
/MONITOR scale.
VU (average) reading can never be disabled.
For Jumper setting ref. to layout scheme displayed on the next page:
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