The Rta Module - Phonic i7600 Manual Del Usuario

THE rTA MODuLE

Controls and Display
with the EQ/rTA indicator on, turning the
GrAPHIC EDIT knob brings you to the rta Band
Select Mode. See table 1 for tips on identifying the
control modes. continue to turn the knob to select
a band. the selection is indicated by the blinking
cursor at the bottom row of the Band level Display.
once a band is selected, the alphanumeric Display
provides the following three pieces of information:
the channel number (Channel 1 or Channel 2), the
center frequency of the band, and the real-time level
(if Peak hold is off) or the peak level (if Peak hold
is on) of the band.
notE: in the rta Module, the right-most lED
column (marked 20k) in each pane of the Band
level Display does not show the level of the 20-
kilohertz band; rather, it shows the over-all level of
the channel. to avoid confusion, special markings
are printed above the two 20k columns (▼
and at the center-bottom of the front panel (▼
ch lEVEl), reminding you that these two columns
show the channel levels in the rta Module.
functions
with the EQ/rTA indicator on, turning the fuNCTION
EDIT knob brings you to the rta function Select
Mode. See table 1 for tips on identifying the control
modes. while in the rta function Select Mode, the
upper line of the alphanumeric Display provides
important information on the current rta settings.
This information includes the following five values,
all of which are system-wide (channel-independent)
values.
 The first two values indicate the viewing
range of the Band Level Display. The first
value represents the maximum level that can
be represented in the Band level Display. in
other words, it corresponds to the top lED in
each column. the second value, on the other
hand, represents the minimum level, and
corresponds to the bottom lED.
i7600
notE: the reference marks (+12, 0, and -12)
beside the panes of the Band level Display
are applicable only in the Eq Module. while
in the rta Module, the reference values for
the top and bottom lEDs are adjustable, and
are shown in the alphanumeric Display as
described in the previous paragraph.
 weighting type: the letter A stands for a
weighting, C for c weighting, and f for flat.
 Signal source: the word Post indicates that
the current measurement is taken from the
processed (post-Eq) signal, whereas Pre
indicates that the measurement is taken from
the original (pre-Eq) input signal.
 pink noise: the letter P appears when the
Pink noise function is set to ON.
the following sections describe all functions you
can adjust in the rta function Edit Mode.
range
―
this function lets you select the viewing range of
lEV)
the Band level Display. two values are associated
―
rta/
with each selection. The first value represents the
maximum level that can be represented in the
Band level Display. in other words, it corresponds
to the top lED in each column. the second value,
on the other hand, represents the minimum level,
and corresponds to the bottom lED. table  lists all
available viewing ranges.
Use this function to find the appropriate viewing
range for your program. for instance, when there is
little or no action in the Band level Display, and you
are certain that signals are being fed into at least
one of the channels, you probably have set a range
that is too high. in other words, all the activities are
happening below the viewable range. try lowering
the range to resolve the problem.
MAX MIN
+ 30 - 6
+ 21 - 15
+ 12 - 24
+ 6 - 30
0 - 36
- 12 - 48
Table 3: Viewing ranges
7