Ad-23 Board; Da-15 Board - Sony PCM-1630 Operation And Maintenance Manual

indication mode selector.
The scale of the level meter can be
enlarged with the SCALE selector for easy
and precise reading of the meter.
The OVER level indicators at the top of the
indicator column for each channel light up
to warn of an overload during recording.
~ REF (reference) MARKERs
The indicator corresponding to the
reference level (-10 dB to -20 dB) set with
the REF MARKER selector lights up so that
the reference signal input level can be
adjusted easily.
~ PB (playback) MODE indicators
These indicators light up in accordance
with the setting (RAR, A or Bl of the PB
MODE selector.
The A indicator also lights up when the PB
MODE selector is set to RAR, without an
optional RAR-1 board installed in the unit.
~ D-I/0 (digital input/output) indicators
The D-I or D-0 indicator lights up,
depending upon the installed digital input
or output board.
D-1: Lights up when an optional DI-S board
is installed in the unit instead of the
AD-23 board.
D-0: Lights up when an optional D0-17 board
is installed in the unit instead of the
DA-15 board.
~ REC (recording) LEVEL ADJUST controls
The recording level can be adjusted with
these controls within a range of
approximately 12 dB. Clockwise rotation
raises the signal gain.
~
PB
(playback) LEVEL ADJUST controls
The output level of the playback signal can
be adjusted with these controls within a
range of approximately 12 dB. Clockwise
rotation raises the playback level.
~ REF (reference) MARKER selector
This selector sets the reference signal
level within a range of -10 dB to -20 dB in
2-dB steps. The selected reference level
is indicated by the illumination of the
corresponding REF MARKER indicator.
~ PEAK indication mode selector
Selects the manner in which peaks are
indicated on the level meter. This
selector is effective when the PEAK HOLD
switch (SWl) on the MT-16 board is set to
ON.
BOLD: The level meter indicates the level
of the highest peak while simultaneously
following the level of transient peaks
below the highest peak. The peak level
will be held on the scale until a higher
peak occurs, in which case. the higher peak
is held.
AUTO: Successive peaks are held on the
scale for approximately 1.5 seconds, except
when a higher peak occurs before 1.5
seconds have elapsed, in which case that
peak is immediately indicated. (When the
mode select switch (SW4l on the MT-16 board
is set to ON, the peaks are held for
approximately 4 seconds.)
When the PEAK HOLD switch on the MT-16
board is set to OFF, the level meter
activates as a peak meter.
~ SCALE selector
This selector selects the scale of the
level meter.
FINE: The level meter scale is enlarged,
and the signal level is indicated in 0.2-dB
steps. If the signal level is above the
maximum level of the enlarged scale,
th~
LED of 0 dB will blink, and if the signal
level is below the minimum level, the LED
of -60 dB will blink.
NORMAL: The level meter scale is as
indicated on the front panel.
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