Yamaha dm2000v2e1 - Инструкция (Страница 64)

DM2000 Version 2—Owner’s Manual
аналоговый ввод-вывод и аналого-цифровой блок ввода
64
4 Аналоговый ввод-вывод
и аналого-цифровой блок ввода
Блок ввода аналоговых и цифровых сигналов (вход АЦ)
DM2000 оснащен 24 входными портами АЦ для подключения микрофона и линейного
источника звука.
Входы АЦ можно соединить с входными каналами, Insert In входных каналов (см. стр.77)
или Insert In выходных каналов (см. стр. 80).
Входные порты АЦ
Во входах АЦ имеются сбалансированные коннекторы XLR-3-31 и сбалансированные
1/4-дюймовые гнезда для наушников с номинальным входным диапазоном от -60 дБ до
+10 дБ Гнезда для наушников, которые также подходят для несбалансированных штеке-
ров, имеют преимущество перед портами XLR, поэтому, когда вставлен штекер, порт XLR
отключен.
Фантомное питание
Во входных портах АЦ имеется переключаемый режим фантомного питания +48V, кото-
рый используется с микрофонами конденсаторного типа и директ-боксами фантомное
питание передается через сбалансированный коннектор XLR-3-31 и может переклю-
чаться индивидуально для каждого входа АЦ.
Фиксированный аттенюатор
Во входных портах АЦ имеются фиксированные аттенюаторы, которые уменьшают вхо-
дящий сигнал на 26 дБ, позволяя усилителям звуковой головки работать с сигналами
Высокого уровня. Фиксированный аттенюатор используется для ослабления «горячих»
сигналов с микрофонов большого или малого барабана или «горячих» сигналов линии.
Регулятор GAIN
Во входных портах АЦ имеются фиксированные вращающиеся регуляторы усиления,
пороговый уровень обнаружения сигнала которых колеблется от -16 дБ до -60 дб или от
+10 дБ до -34 дБ при включенном фиксированном аттенюаторе регулятор GAIN контро-
лирует усилители звуковой головки, позволяя оптимизировать уровни входного сигна-
ла для наилучшего соотношения сигнал-шум. В идеале, регулятор GAIN должен быть
установлен так, чтобы уровень сигнала был относительно Высоким и чтобы индикатор
PEAK мог время от времени загораться. Однако, если индикатор PEAK загорается часто,
следует немного убавить усиление, иначе может произойти ограничение сигнала, если
установить слишком низкое усиление, ухудшится соотношение сигнал-шум.
Индикаторы PEAK и SIGNAL
Данные индикаторы используются вместе с регуляторами GAIN и выключателями PAD
для оптимизации уровней сигналов. Индикатор SIGNAL загорается при уровне входя-
щего сигнала на 20 дБ ниже номинального уровня. Индикатор PEAK загорается при
уровне входящего сигнала на 3 дБ ниже уровня завода.
64
Chapter 4—Analog I/O & the AD Input Section
DM2000 Version 2—Owner’s Manual
4 Analog I/O & the AD Input Section
AD Input Section
The DM2000 features 24 AD Inputs for connecting microphone and line-level sources.
AD Inputs can be patched to Input Channels or Input Channel Insert Ins (see page 77).
They can also be patched to Output Channel Insert Ins (see page 80).
AD Input Connectors
AD Inputs feature balanced XLR-3-31-type connectors and balanced 1/4-inch
phone jacks, both with a nominal input range of –60 dB to +10 dB. The phone
jacks, which can also be used with unbalanced phone plugs, have priority over
the XLR-type connectors, so when a phone plug is inserted, the XLR-type con-
nector is disconnected.
Phantom Power
AD Inputs feature switchable +48 V phantom powering for use with con-
denser-type microphones and direct boxes. Phantom power is supplied to the
balanced XLR-3-31-type connector, and can be switched individually for each
AD Input.
Pad
AD Inputs feature pad switches, which attenuate input signals by 26 dB, allow-
ing the Head Amps to work with high-level signals. Pad is typically used to
attenuate “hot” signals from bass or snare drum microphones, or “hot”
line-level signals.
Gain
AD Inputs feature detented rotary gain controls with an input sensitivity of –16
dB to –60 dB, or +10 dB to –34 dB when the Pad is on. The GAIN controls
adjust the gain of the Head Amps, allowing you to optimize input signal levels
for the best signal-to-noise performance. Ideally, the GAIN control should be
set so that the signal level is relatively high, and it’s okay for the PEAK indicator
to light up occasionally. If the PEAK indicator lights up often, however, you
should back off the GAIN control a little, otherwise, signal clipping may occur.
If the GAIN is set too low, the signal-to-noise performance will suffer.
PEAK & SIGNAL Indicators
These indicators are used in conjunction with the GAIN controls and PAD
switches to optimize signal levels. The SIGNAL indicator lights up when the
input signal level is 20 dB below the rated level. The PEAK indicator lights up
when the input signal level is 3 dB below clipping.
ON
OFF
+ 48V
PAD
26dB
- 16 - 60
GAIN
PEAK
SIGNAL
64
Chapter 4—Analog I/O & the AD Input Section
DM2000 Version 2—Owner’s Manual
4 Analog I/O & the AD Input Section
AD Input Section
The DM2000 features 24 AD Inputs for connecting microphone and line-level sources.
AD Inputs can be patched to Input Channels or Input Channel Insert Ins (see page 77).
They can also be patched to Output Channel Insert Ins (see page 80).
AD Input Connectors
AD Inputs feature balanced XLR-3-31-type connectors and balanced 1/4-inch
phone jacks, both with a nominal input range of –60 dB to +10 dB. The phone
jacks, which can also be used with unbalanced phone plugs, have priority over
the XLR-type connectors, so when a phone plug is inserted, the XLR-type con-
nector is disconnected.
Phantom Power
AD Inputs feature switchable +48 V phantom powering for use with con-
denser-type microphones and direct boxes. Phantom power is supplied to the
balanced XLR-3-31-type connector, and can be switched individually for each
AD Input.
Pad
AD Inputs feature pad switches, which attenuate input signals by 26 dB, allow-
ing the Head Amps to work with high-level signals. Pad is typically used to
attenuate “hot” signals from bass or snare drum microphones, or “hot”
line-level signals.
Gain
AD Inputs feature detented rotary gain controls with an input sensitivity of –16
dB to –60 dB, or +10 dB to –34 dB when the Pad is on. The GAIN controls
adjust the gain of the Head Amps, allowing you to optimize input signal levels
for the best signal-to-noise performance. Ideally, the GAIN control should be
set so that the signal level is relatively high, and it’s okay for the PEAK indicator
to light up occasionally. If the PEAK indicator lights up often, however, you
should back off the GAIN control a little, otherwise, signal clipping may occur.
If the GAIN is set too low, the signal-to-noise performance will suffer.
PEAK & SIGNAL Indicators
These indicators are used in conjunction with the GAIN controls and PAD
switches to optimize signal levels. The SIGNAL indicator lights up when the
input signal level is 20 dB below the rated level. The PEAK indicator lights up
when the input signal level is 3 dB below clipping.
ON
OFF
+ 48V
PAD
26dB
- 16 - 60
GAIN
PEAK
SIGNAL
64
Chapter 4—Analog I/O & the AD Input Section
DM2000 Version 2—Owner’s Manual
4 Analog I/O & the AD Input Section
AD Input Section
The DM2000 features 24 AD Inputs for connecting microphone and line-level sources.
AD Inputs can be patched to Input Channels or Input Channel Insert Ins (see page 77).
They can also be patched to Output Channel Insert Ins (see page 80).
AD Input Connectors
AD Inputs feature balanced XLR-3-31-type connectors and balanced 1/4-inch
phone jacks, both with a nominal input range of –60 dB to +10 dB. The phone
jacks, which can also be used with unbalanced phone plugs, have priority over
the XLR-type connectors, so when a phone plug is inserted, the XLR-type con-
nector is disconnected.
Phantom Power
AD Inputs feature switchable +48 V phantom powering for use with con-
denser-type microphones and direct boxes. Phantom power is supplied to the
balanced XLR-3-31-type connector, and can be switched individually for each
AD Input.
Pad
AD Inputs feature pad switches, which attenuate input signals by 26 dB, allow-
ing the Head Amps to work with high-level signals. Pad is typically used to
attenuate “hot” signals from bass or snare drum microphones, or “hot”
line-level signals.
Gain
AD Inputs feature detented rotary gain controls with an input sensitivity of –16
dB to –60 dB, or +10 dB to –34 dB when the Pad is on. The GAIN controls
adjust the gain of the Head Amps, allowing you to optimize input signal levels
for the best signal-to-noise performance. Ideally, the GAIN control should be
set so that the signal level is relatively high, and it’s okay for the PEAK indicator
to light up occasionally. If the PEAK indicator lights up often, however, you
should back off the GAIN control a little, otherwise, signal clipping may occur.
If the GAIN is set too low, the signal-to-noise performance will suffer.
PEAK & SIGNAL Indicators
These indicators are used in conjunction with the GAIN controls and PAD
switches to optimize signal levels. The SIGNAL indicator lights up when the
input signal level is 20 dB below the rated level. The PEAK indicator lights up
when the input signal level is 3 dB below clipping.
ON
OFF
+ 48V
PAD
26dB
- 16 - 60
GAIN
PEAK
SIGNAL
64
Chapter 4—Analog I/O & the AD Input Section
DM2000 Version 2—Owner’s Manual
4 Analog I/O & the AD Input Section
AD Input Section
The DM2000 features 24 AD Inputs for connecting microphone and line-level sources.
AD Inputs can be patched to Input Channels or Input Channel Insert Ins (see page 77).
They can also be patched to Output Channel Insert Ins (see page 80).
AD Input Connectors
AD Inputs feature balanced XLR-3-31-type connectors and balanced 1/4-inch
phone jacks, both with a nominal input range of –60 dB to +10 dB. The phone
jacks, which can also be used with unbalanced phone plugs, have priority over
the XLR-type connectors, so when a phone plug is inserted, the XLR-type con-
nector is disconnected.
Phantom Power
AD Inputs feature switchable +48 V phantom powering for use with con-
denser-type microphones and direct boxes. Phantom power is supplied to the
balanced XLR-3-31-type connector, and can be switched individually for each
AD Input.
Pad
AD Inputs feature pad switches, which attenuate input signals by 26 dB, allow-
ing the Head Amps to work with high-level signals. Pad is typically used to
attenuate “hot” signals from bass or snare drum microphones, or “hot”
line-level signals.
Gain
AD Inputs feature detented rotary gain controls with an input sensitivity of –16
dB to –60 dB, or +10 dB to –34 dB when the Pad is on. The GAIN controls
adjust the gain of the Head Amps, allowing you to optimize input signal levels
for the best signal-to-noise performance. Ideally, the GAIN control should be
set so that the signal level is relatively high, and it’s okay for the PEAK indicator
to light up occasionally. If the PEAK indicator lights up often, however, you
should back off the GAIN control a little, otherwise, signal clipping may occur.
If the GAIN is set too low, the signal-to-noise performance will suffer.
PEAK & SIGNAL Indicators
These indicators are used in conjunction with the GAIN controls and PAD
switches to optimize signal levels. The SIGNAL indicator lights up when the
input signal level is 20 dB below the rated level. The PEAK indicator lights up
when the input signal level is 3 dB below clipping.
ON
OFF
+ 48V
PAD
26dB
- 16 - 60
GAIN
PEAK
SIGNAL
64
Chapter 4—Analog I/O & the AD Input Section
DM2000 Version 2—Owner’s Manual
4 Analog I/O & the AD Input Section
AD Input Section
The DM2000 features 24 AD Inputs for connecting microphone and line-level sources.
AD Inputs can be patched to Input Channels or Input Channel Insert Ins (see page 77).
They can also be patched to Output Channel Insert Ins (see page 80).
AD Input Connectors
AD Inputs feature balanced XLR-3-31-type connectors and balanced 1/4-inch
phone jacks, both with a nominal input range of –60 dB to +10 dB. The phone
jacks, which can also be used with unbalanced phone plugs, have priority over
the XLR-type connectors, so when a phone plug is inserted, the XLR-type con-
nector is disconnected.
Phantom Power
AD Inputs feature switchable +48 V phantom powering for use with con-
denser-type microphones and direct boxes. Phantom power is supplied to the
balanced XLR-3-31-type connector, and can be switched individually for each
AD Input.
Pad
AD Inputs feature pad switches, which attenuate input signals by 26 dB, allow-
ing the Head Amps to work with high-level signals. Pad is typically used to
attenuate “hot” signals from bass or snare drum microphones, or “hot”
line-level signals.
Gain
AD Inputs feature detented rotary gain controls with an input sensitivity of –16
dB to –60 dB, or +10 dB to –34 dB when the Pad is on. The GAIN controls
adjust the gain of the Head Amps, allowing you to optimize input signal levels
for the best signal-to-noise performance. Ideally, the GAIN control should be
set so that the signal level is relatively high, and it’s okay for the PEAK indicator
to light up occasionally. If the PEAK indicator lights up often, however, you
should back off the GAIN control a little, otherwise, signal clipping may occur.
If the GAIN is set too low, the signal-to-noise performance will suffer.
PEAK & SIGNAL Indicators
These indicators are used in conjunction with the GAIN controls and PAD
switches to optimize signal levels. The SIGNAL indicator lights up when the
input signal level is 20 dB below the rated level. The PEAK indicator lights up
when the input signal level is 3 dB below clipping.
ON
OFF
+ 48V
PAD
26dB
- 16 - 60
GAIN
PEAK
SIGNAL