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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 7 k9 |% K, w7 V- q& G
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1 v, C0 U: f( B" L英文电子说明书( Y1 ~9 ]3 ?6 f8 R( C( P
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
6 n7 ?3 s5 ]. V default settings. The subsequent settings remain stored in a Flash EPROM
+ G) Q% {7 D- }- N after switching the unit off (unit contains no battery)./ I, h2 R4 h$ x7 p5 u. m8 O9 H
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
5 X, ~. f i( t# B+ o between microphone and line sensitivity setting ranges.) b% x$ B6 M( P0 F, A7 X* t$ t
Mic: Range –40...+20 dBu5 P0 W0 M( W' e5 E9 ~7 \: {
Line: Range +14 dBu, +24 dBu; Y- u$ t3 H6 p, P
[3] Fine Gain Potentiometer for fine input sensitivity setting.' {4 ~! d: @5 H# i( k# s& n- o
Range of additional gain: 0...+15 dB.5 o& D2 n; \' Y f6 j1 U7 v
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents( |- c8 d$ A+ w/ ^5 p
the dBu value of an analog input signal which causes a full-scale output of& S3 w$ z& V! J/ q
the A/D converter.
% t! f: c) O# T: `, H Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;# d; |! ^& d+ @7 W" v# o
the peak level is therefore +16 dBu. The “Input dBu FS” rotary+ M C2 F# p. k
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
3 O* l& c& b; P. U# k8 L Gain” potentiometer [3] increases the gain by 8 dB., Q9 ^$ }, e; i s9 [3 ~
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.3 T g1 j1 K' O/ y- \
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals: r; _7 L9 i# P9 I* ]
have more body; percussive instruments are less aggressive.
4 N' z" S- H1 l. C* w: l The group delay behaviour due to AC coupling of the stages is different in( A6 m3 D0 h+ r- W" _
tube amplifiers.
& @: g2 c" ]2 K+ T0 k The “Bass Warmth” control allows to select the frequency range
5 u( Z: c) G2 T. `: k! M (10...200 Hz) within which the effect is active.* `% L9 C, Y7 g5 Q/ E
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.. ~4 A5 g4 ]4 Z) H( ~) [
Valve amps have a characteristic response, mid-frequency harmonic content
3 o, z; \" X4 P is emphasized.5 x3 A9 D4 I9 G3 J4 H0 e
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
7 V1 l! E3 `6 c3 K) G/ t2 k6 M; C5 d The harmonics spectrum of a delicately overloaded valve amplifier is completely3 s0 N$ P6 Y* a5 i2 ?- p
different from an overloaded transistor stage.
" f+ _3 J+ R1 B+ A# Q1 b The “Gain” control adjusts a gentle overload while the odd-harmonics content
; _8 g/ N. I i6 S3 l can be adjusted with the “Clip” control.
4 N' B6 x4 Y3 ]1 q& w[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24$ c; @9 b3 j' H3 s Z7 ~* I/ @5 B8 Y
dBu FS.7 M+ G8 y9 w% u$ X2 n) V1 \' t, s
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
/ y1 s$ l9 B0 a6 v2 j6 Y' W: k desired channel.9 d. E/ S! H3 ^. d; K! r
The “VALVE” LED is on when the Valve Dignifier stage is active.
6 N& z$ z, S! Y9 l[9] INSERT INSERT function.0 }+ Z1 R6 s# W1 D1 n$ | @! F
First key pressure: INSERT POST VALVE, the Insert Send is tapped after7 ` v6 J8 _. f, E' T: A3 J
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
$ J# f* _4 x1 m* ]- Z! _# @+ t and AES/EBU outputs.' r3 s. h5 w. H7 s
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
3 y0 u, F( t' t/ M& @ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 o. s( n0 D) C the valve dignifier stage to the Line and AES/EBU outputs.4 A2 s7 ^1 q5 C9 n |" q; A
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier; h. E7 k( `. y
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
, ], w% \) `" x5 `4 ~( Y receives this signal; display: none).
2 Z( k% K2 ^+ X$ X; F; _$ `0 L Insert Send and Insert Return are electronically balanced and equipped with
% x5 ]) e9 n2 W5 z$ V, S+ } XLR connectors. M' c# G7 g2 _2 o" ]
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or4 ^3 d8 ~5 c% ]+ ?8 u! J
ADAT digital interfaces. Each input channel can be switched to one of the
: K% {9 I& h. H: r3 A4 K2 _ channels 1...8 of the multichannel interface. If desired, also a mono mix is
4 R+ N e6 w ?! _ possible by selecting the same output channel for both input channels.! `, \, I/ [+ m6 G9 x. }% D
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone0 D6 h7 p' A! A1 n" W A
channel.
; j+ q- E/ `& X! F" W Can be operated only if the input gain selector is in Mic position. The
, s* o! b8 ]$ U, X4 F) y8 ~ setting remains stored when switching over to a line gain setting.
1 ~ V* v! f1 G3 H[12] Activates the high pass filter on the microphone inputs of the desired channel.- I. k# p8 ^; o' Q' k. n
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
, `! [ R/ L Q& L7 h# r' p Can be operated only if the input gain selector is in Mic position. The
) j' M u9 Q% j; y v4 t setting remains stored when switching over to a line gain setting.
F0 Z: D+ ~ i! u1 T- m[13] Ø Toggle key to activate the phase reverse switch of the desired channel.7 C. X! f! l& A( F# w
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:) E) ` [# x D+ {4 c( |
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
9 D* }* P9 r! g0 t9 i Noise Shaping (display: “16NS”) can be selected.9 P( Z. A9 X/ T w! `
[15] SYNC Selects the synchronization source for the unit. Possible selections are:2 R8 p9 f0 w3 j( \9 v, R l
INT 48 Internal quartz reference, 48 kHz) Z2 B, h; O" O6 o; U
INT 44 Internal quartz reference, 44.1 kHz
- w$ f3 G' S4 F+ }! U WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)6 s$ g" L% M/ \6 h( q
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)& Q9 U- Y6 s+ D$ V
AUTO Selects sources automatically in the sequence AES-WCLK-INT
7 s/ g9 Y0 _- K! W: A: n VAR Indication only, active if the external source frequency deviates from 48 or6 Z# k+ M+ C; O- ^3 T- N
44.1 kHz for more than approx. ±3 %.
( M4 l4 U6 i/ L( [- x: e[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –( \4 V/ n+ ^6 }0 x% _) c1 {
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
# B4 L- f6 A. d% @8 d[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
) g( a8 T/ o- x9 i; `' @/ t: j: V6 K. g the danger of overloading the A/D converter with short signal peaks (if- E! Z$ q: q, F6 J; K
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,5 X7 w! A0 {; C% W' ?; G
allowing for approx. 6 dB reserve before hard clipping occurs5 Z% J J3 U0 N0 {/ b
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