Phonic i7600, Руководство пользователя

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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
? at.
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 the Band Level Display. Two values are
associated with each selection. The ? rst 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 3 lists all available
viewing ranges.
Table 3: Viewing ranges
Use this function to ? nd 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
MAX MIN
+ 30 - 6
+ 21 - 15
+ 12 - 24
+ 6 - 30
0 - 36
- 12 - 48
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 (▼ LEV) and at the center-bottom
of the front panel (▼ RTA/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 ? ve
values, all of which are system-wide (channel-
independent) values.
The ? rst two values indicate the viewing
range of the Band Level Display. The ? rst
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.
10 i7600