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发表于 2012-5-21 23:23:18
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本帖最后由 dan3963101 于 2012-5-20 00:12 编辑
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英文电子说明书
- v% C" Z7 Q, c) ]6 d3 v) l5 t' `[1] POWER Switches the unit on or off. The unit is ready to operate with the factory. G; l6 x1 {& C6 H7 k8 u
default settings. The subsequent settings remain stored in a Flash EPROM. Q8 T. b6 C; Y/ x/ a3 O: @
after switching the unit off (unit contains no battery).
. {5 f9 e% W* X3 T' z" _[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position# p. o n/ i( U H" d
between microphone and line sensitivity setting ranges.
) z+ o; [& Z0 c& v. v7 l( H Mic: Range –40...+20 dBu" Z& B R4 b5 S% `+ Z* A8 K
Line: Range +14 dBu, +24 dBu
, o" m# {3 V; q# l$ B+ |. E( h8 J[3] Fine Gain Potentiometer for fine input sensitivity setting.
" ?# J, `4 v- }: U) k( F Range of additional gain: 0...+15 dB.* ]+ a3 `- f+ ?
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
- v# G4 Q9 O$ d the dBu value of an analog input signal which causes a full-scale output of
) w8 t2 V) Q$ X/ x2 Z the A/D converter.
+ q! r9 e. {% h: ^/ w# X, Y5 t Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;3 h0 y& {5 E( ?) x/ a% z9 B
the peak level is therefore +16 dBu. The “Input dBu FS” rotary/ q, [% P; S, }7 P( H; H1 f5 u
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
+ Y6 ~: H0 o( {' r" N1 }7 R Gain” potentiometer [3] increases the gain by 8 dB.* e T V# i5 V3 E9 B
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
3 w# o) x* N$ q: N8 B[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
; g9 K1 N& @* R- m5 Z; i$ x have more body; percussive instruments are less aggressive.
! o5 i4 v% J- a. V The group delay behaviour due to AC coupling of the stages is different in4 m. }6 Z1 I# L/ b/ {% W3 w d
tube amplifiers.- b2 ^7 R& z# U% A
The “Bass Warmth” control allows to select the frequency range
4 H2 E) [# J; f0 A+ S) c" `" ~ (10...200 Hz) within which the effect is active.
0 d& f Z3 j2 P2 Y; B[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.* M+ u+ @) X5 v" ?/ [0 S0 T
Valve amps have a characteristic response, mid-frequency harmonic content+ C- A( s, w3 h# @* B& J. L+ j6 Y
is emphasized.
6 z+ U" \+ i( Y% u( \[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
3 q) l0 C; [! z) R( i The harmonics spectrum of a delicately overloaded valve amplifier is completely
/ p5 [$ K/ Y5 o5 @0 W different from an overloaded transistor stage.: z }- V# q: f4 z! ^1 y# S/ O* }
The “Gain” control adjusts a gentle overload while the odd-harmonics content0 j$ t; T. B: t/ i1 P& o- w
can be adjusted with the “Clip” control.
5 P' U, {& ~: Y[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24# m. G! w: h; z1 ]
dBu FS.
8 a5 L. T; h! x% F* p& K' f[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
" H4 q+ b1 d! W; k) b5 M desired channel.
; @3 X1 w$ c* x! S) X1 B5 s The “VALVE” LED is on when the Valve Dignifier stage is active./ Q" V. h0 P8 @& k/ H$ ]* u8 H% G! Y
[9] INSERT INSERT function.' ]0 {# w6 q' J' P" a$ q
First key pressure: INSERT POST VALVE, the Insert Send is tapped after8 i3 G0 b) a9 U% {1 s. T
the valve stage (display: “INS”); the Insert Return is directly fed to the Line7 a; ~4 q6 j$ k& |2 _, F. O8 u$ B
and AES/EBU outputs.
$ d0 L9 {( T; {) |' o% _. C Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
, I- q. r) ~; i' p$ x the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
2 {/ p3 R6 u9 ` the valve dignifier stage to the Line and AES/EBU outputs.# U0 ^% E& Z w0 m) c2 {8 ~# _
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
, J2 Y8 g6 F0 o! Z1 k Y8 S9 J( c stage (if active) to the Line and AES/EBU outputs (also the Insert Send output% g2 r | Z4 A2 C
receives this signal; display: none).1 X% d6 Y6 h+ j6 ~' i4 s# p# l
Insert Send and Insert Return are electronically balanced and equipped with, \" g/ Z% O) J( e/ u' l& ^; y
XLR connectors. g. J* I0 l0 O; g. C
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
2 i! ^0 w! t/ \8 R# z ADAT digital interfaces. Each input channel can be switched to one of the1 \3 c' [* X" l9 y F
channels 1...8 of the multichannel interface. If desired, also a mono mix is
$ T& f G' x6 y9 \; i: _5 | possible by selecting the same output channel for both input channels.% ]+ N. R, _0 r ]
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
' |: L; }# y- t$ ~0 @ channel.
$ r S0 a: [. a8 F: \ Can be operated only if the input gain selector is in Mic position. The
9 m+ S% d0 U/ v4 ^3 I2 j setting remains stored when switching over to a line gain setting.
4 M4 w3 k! b4 Z' k[12] Activates the high pass filter on the microphone inputs of the desired channel.) ~& h y( y" K- f" |# f2 s5 L$ J
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
+ z/ D/ Q& x2 D Can be operated only if the input gain selector is in Mic position. The
, w1 T' X. J4 i$ Z( T setting remains stored when switching over to a line gain setting.2 Q, v9 L4 f# l3 `- F; @
[13] Ø Toggle key to activate the phase reverse switch of the desired channel. @* X% P. R- ^& B A+ |1 ?& V* {$ |
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:5 T* m, G1 ]2 b$ t4 C
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
/ w5 i9 u {1 V! M: T" R Noise Shaping (display: “16NS”) can be selected.
( v& f, J% ?6 B0 m* w[15] SYNC Selects the synchronization source for the unit. Possible selections are:& V% |/ P/ |8 T/ c+ l9 a- P" e
INT 48 Internal quartz reference, 48 kHz! U* E; F( C5 p' G
INT 44 Internal quartz reference, 44.1 kHz) h( f) K: z5 L4 i' p+ C
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
. B1 d5 B1 d7 X. _ AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)$ V# d6 T& s% Z0 j
AUTO Selects sources automatically in the sequence AES-WCLK-INT" l# ~# q4 k- Z5 @! A1 P
VAR Indication only, active if the external source frequency deviates from 48 or! o9 _ A5 V3 }6 n
44.1 kHz for more than approx. ±3 %.
T) g, _) H# X6 I. [[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –5 L k, I5 q" I n4 @/ M# V
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
9 H! @3 R3 f) s3 S9 v% g0 n[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce+ c0 j" y) q: s# c3 s/ w0 e
the danger of overloading the A/D converter with short signal peaks (if( A$ Q* S, Y, e
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,3 L/ B1 ^) r( U' r
allowing for approx. 6 dB reserve before hard clipping occurs/ d& f1 x5 i. E4 |, u
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