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发表于 2012-5-20 00:04:04
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本帖最后由 dan3963101 于 2012-5-20 00:12 编辑
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- b$ g% J. S, p& @! I- H4 F0 e5 b: R英文电子说明书
( n0 \! J8 F& i4 A$ M[1] POWER Switches the unit on or off. The unit is ready to operate with the factory1 ^0 x) [# u. W6 m+ Z; W5 B# k
default settings. The subsequent settings remain stored in a Flash EPROM' @3 t7 O9 H9 i# g1 f# Y6 }! T
after switching the unit off (unit contains no battery).
: [8 A; b4 o' g1 K[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
k, Z' Q m7 f- M$ {) n! V; r between microphone and line sensitivity setting ranges.. `' _9 X( R( v
Mic: Range –40...+20 dBu4 O, v; ], z# B: a
Line: Range +14 dBu, +24 dBu
) z% p. G$ \8 Q6 {$ R, p[3] Fine Gain Potentiometer for fine input sensitivity setting.1 m; j* e2 ^9 L. h& h+ Z/ I
Range of additional gain: 0...+15 dB.' O( U8 j' H$ {$ E3 B6 g% R
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
+ }& Z- |/ w0 K0 M the dBu value of an analog input signal which causes a full-scale output of
O) [9 E8 t2 y% z& v& z the A/D converter.
6 Y9 O7 A+ y; @6 b5 V9 R3 r5 ~ Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;& ~( l3 ~- H% u' \
the peak level is therefore +16 dBu. The “Input dBu FS” rotary* _; k r5 U$ m
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine1 i( Z% X4 y5 K @& @! I
Gain” potentiometer [3] increases the gain by 8 dB.+ k! y' k: b6 D F: P5 m
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
, ]; D& @8 ~, C( k, j[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
! b/ w2 ]- j* } have more body; percussive instruments are less aggressive.
& r$ @' k: c% V: j The group delay behaviour due to AC coupling of the stages is different in
& F7 i, H& u, c8 W( M2 k tube amplifiers.- ~4 `% M. O |/ T: f7 p
The “Bass Warmth” control allows to select the frequency range
; R2 P c: j: } (10...200 Hz) within which the effect is active./ v0 e d% Z9 O1 K1 ]( }, ^
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
7 \& A7 Z' p1 e8 V, _ }5 D Valve amps have a characteristic response, mid-frequency harmonic content: }& i; D) t3 a& Z2 N8 g
is emphasized.
# ^2 C+ d' G5 |0 c4 L[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.7 X* ?6 d" c- [. e' Y
The harmonics spectrum of a delicately overloaded valve amplifier is completely
; b3 ^ o( E5 P7 D8 Z different from an overloaded transistor stage.% K+ A* _" Q" Q- k: @/ E
The “Gain” control adjusts a gentle overload while the odd-harmonics content
* V! }8 `! H+ }& T; X. O! Y$ y) ~% ` can be adjusted with the “Clip” control.& V& M/ v" z; b# T& i! z. P9 j
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
) o9 D/ N" g1 }/ z; H" A dBu FS. v0 q$ h$ v/ B( m1 ~
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the: k* y" j& ~1 G) }) D! G! r
desired channel., _4 p9 @6 b3 Z: ~
The “VALVE” LED is on when the Valve Dignifier stage is active.; p5 B' p. R7 F5 s- \
[9] INSERT INSERT function.
! }+ ^0 N7 [. N! o% H9 { First key pressure: INSERT POST VALVE, the Insert Send is tapped after
3 W" S% L% i, h the valve stage (display: “INS”); the Insert Return is directly fed to the Line
( I- G2 c ]& k, b7 Y Q- p and AES/EBU outputs.
) {" m3 X% W2 b' E5 {- J. i Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before6 w0 I L' _: X* s& s. p
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via3 n: A2 {+ @9 I3 n6 K
the valve dignifier stage to the Line and AES/EBU outputs.
& W% g3 ]9 V! e9 w- Y0 f# S Third pressure: INSERT OFF, the input signal is fed via the valve dignifier( R9 N! g8 w) j! {9 o7 V- l+ v
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
. q/ p7 ]& ^3 T( a) L2 J$ W- E receives this signal; display: none).$ J$ U7 T+ E" E# `4 t, K
Insert Send and Insert Return are electronically balanced and equipped with
& F+ N# d; p" P t XLR connectors.
) a/ Z: N' N; U) E3 W[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or. g/ t8 W6 G% C# k
ADAT digital interfaces. Each input channel can be switched to one of the% e6 X) |7 f8 N/ t1 \4 j
channels 1...8 of the multichannel interface. If desired, also a mono mix is7 C1 `) u b0 ?3 ] u/ [) y
possible by selecting the same output channel for both input channels.* a* {- b: l) u" @0 j9 f$ k4 D- H
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
$ k" C; ]( `- A a; R7 M+ _ channel., o" G' n* [3 P! {" n7 p
Can be operated only if the input gain selector is in Mic position. The
' `8 ^4 I6 f* ]0 Q( \ K6 [ setting remains stored when switching over to a line gain setting.
/ n$ ]- Y0 {8 t/ x' S( |, @[12] Activates the high pass filter on the microphone inputs of the desired channel.( I2 G" U- f5 C- a& o$ u
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
0 R7 c: ^4 C9 H Can be operated only if the input gain selector is in Mic position. The; Y& D) [! M' d
setting remains stored when switching over to a line gain setting.
/ l* t7 M3 e0 _. k# ^, c. U3 Z[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
9 ~9 }# c5 ^" ^, E[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, G, w0 V8 L6 s2 ?' O* P) G “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
2 U! u' d5 a% L- L) G& G Noise Shaping (display: “16NS”) can be selected.3 P7 X; X) u- M8 L
[15] SYNC Selects the synchronization source for the unit. Possible selections are:; Y) J; E4 o! s: i# M5 i
INT 48 Internal quartz reference, 48 kHz1 q' r/ a8 n& ?* U1 t
INT 44 Internal quartz reference, 44.1 kHz$ I& v# x8 F! T6 D; s9 q0 d% v" q
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)% B' l/ l9 b, c2 V0 m
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
4 B" v: d4 s- h AUTO Selects sources automatically in the sequence AES-WCLK-INT& S) `0 r' x# E5 m! q
VAR Indication only, active if the external source frequency deviates from 48 or9 _3 j6 f# w* h" _0 f0 _( r6 @
44.1 kHz for more than approx. ±3 %.& S( J* u! D& C2 \2 o$ I
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
( C/ C) W4 d8 J6 u! r either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
8 N6 w z: K; r- u[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce) V( S- Q. f0 e) |
the danger of overloading the A/D converter with short signal peaks (if
7 S+ E2 G: }$ r5 B0 X2 H active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
6 [( q; T* t% @, P( f6 M allowing for approx. 6 dB reserve before hard clipping occurs( u9 v" N- N1 }1 s$ I; J" `. ]
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