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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 + h" D% H; g+ ^6 p5 u9 b/ s! p
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A4 k: G: L: R' i6 h( U* `# e英文电子说明书
2 |& N# d* T9 U1 s6 o! o6 P% y! N[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
4 F) y1 U3 S8 k9 l5 m default settings. The subsequent settings remain stored in a Flash EPROM
- u/ X; e, ?! v( r& t2 D; @ after switching the unit off (unit contains no battery).; H1 G9 y% f# e+ C
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position: k P/ E! r+ B! s9 T) {; A7 Q `
between microphone and line sensitivity setting ranges.
! S z4 c" } D' N Mic: Range –40...+20 dBu/ I2 q- H" ~# e* H1 C- j& M: A) P
Line: Range +14 dBu, +24 dBu
3 I& ^2 d; N/ f! _, w[3] Fine Gain Potentiometer for fine input sensitivity setting.
1 ?) A7 D) ^. H: P+ Z+ r: ~2 r$ X Range of additional gain: 0...+15 dB.
- O E( z+ ^% z0 ~6 ` Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents& r6 i4 a. l' w7 D: L; t
the dBu value of an analog input signal which causes a full-scale output of
& O, A9 \( c. w, N# ~, ~. Z the A/D converter.% C7 U# S2 D/ c0 j$ w( F1 a
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;% G* p' z5 E1 t+ l; x% o: E0 [
the peak level is therefore +16 dBu. The “Input dBu FS” rotary+ M/ c; F( n3 g8 }" Y
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine2 w% g9 x$ |. l% _+ r' M2 D
Gain” potentiometer [3] increases the gain by 8 dB.
# ~# P \# N& p[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.% k0 i8 T% x/ q
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
6 n! L1 S5 Q' e# t have more body; percussive instruments are less aggressive.* D. Z6 I2 Q& | V( a. G
The group delay behaviour due to AC coupling of the stages is different in' ^- F' t5 K6 R5 |) {
tube amplifiers.
0 W$ x# J, s4 A8 b8 O, e The “Bass Warmth” control allows to select the frequency range2 C& J, f K- `8 r0 ^. ]" P1 x
(10...200 Hz) within which the effect is active.& A9 [9 ], ]8 C! G2 O0 b
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
1 T3 C+ [6 ^' e& A( [; X- f Valve amps have a characteristic response, mid-frequency harmonic content
2 D# A! K# I9 @; k9 e$ q+ Q5 m' P is emphasized.
! ]4 Y5 Z6 X. c/ S# h[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.6 x0 w w0 r' K. G4 f1 k6 _8 [
The harmonics spectrum of a delicately overloaded valve amplifier is completely
' m% t, P1 o( i! P- D* U0 }5 w2 d different from an overloaded transistor stage.# w& S3 O+ c9 E$ _/ O
The “Gain” control adjusts a gentle overload while the odd-harmonics content4 I/ A- A) a3 s9 H# C
can be adjusted with the “Clip” control.
8 _" `' }! }2 `4 c6 |[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24" z: A" S+ @( b- V3 T3 P3 c! _1 |
dBu FS.
6 C6 d& h& `0 N! `$ o3 S0 K[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the; C" A. e b8 `, W+ T: B2 o
desired channel.* L: J# W; r7 L, Y5 F
The “VALVE” LED is on when the Valve Dignifier stage is active.* j& d9 K0 p# G1 A: a
[9] INSERT INSERT function.# Y* V5 i1 e, S" E% V
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
; M( s! {6 a; V( k+ x the valve stage (display: “INS”); the Insert Return is directly fed to the Line
$ G) b) z2 F' M3 n; }- c: t6 [ and AES/EBU outputs.
! s4 b; X4 P A Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before% T3 g6 m, U* z$ V* ]" C. Y
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
- g9 K9 }8 f" V) ^3 g d9 j5 Z* S: S the valve dignifier stage to the Line and AES/EBU outputs.
! _9 O3 {/ q+ D' b+ I, M4 h' s Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
6 D) C( G9 {3 \ stage (if active) to the Line and AES/EBU outputs (also the Insert Send output3 d+ y2 C+ ]" `6 A: b% B
receives this signal; display: none).
8 M E, | W7 J }8 `8 P5 U Insert Send and Insert Return are electronically balanced and equipped with
- M1 X; `2 ?8 J XLR connectors.
G5 K1 R& L! X+ ~5 n[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
1 p& ]6 c) j* k ADAT digital interfaces. Each input channel can be switched to one of the( ]1 B$ ^: x: H9 |$ @
channels 1...8 of the multichannel interface. If desired, also a mono mix is
u0 O% Y' L9 E% Z! _ possible by selecting the same output channel for both input channels.- p- `1 L, L1 B. y; ^
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
i2 |. N; L) ` channel.9 K! e; ]4 F; _2 b* i# I
Can be operated only if the input gain selector is in Mic position. The5 O' A9 D/ e; T& S7 x
setting remains stored when switching over to a line gain setting.: g( I( s+ s/ Z# y5 J( k
[12] Activates the high pass filter on the microphone inputs of the desired channel.
' Y y# [5 b4 z) t Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
+ v4 ^. T* x$ n$ k3 J Can be operated only if the input gain selector is in Mic position. The/ t& ?2 ^- ~$ n, L
setting remains stored when switching over to a line gain setting.
+ G( |6 a# x0 V! y[13] Ø Toggle key to activate the phase reverse switch of the desired channel.# @% S! R$ ^9 C# K- N2 e% Z9 s* B
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:% P6 C! e6 s& B3 F/ @
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
, J$ P; z# s# j' e2 F Noise Shaping (display: “16NS”) can be selected.7 t$ |5 G8 j3 p) Z$ c
[15] SYNC Selects the synchronization source for the unit. Possible selections are:- [# ^5 V6 v+ W8 \
INT 48 Internal quartz reference, 48 kHz0 @* F0 o; u! w+ Y# O9 j
INT 44 Internal quartz reference, 44.1 kHz
) B! r. p3 s' }% p& ?. H5 m WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
" k ?. x# ]- H* I8 l& _ AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
6 B; O/ k/ J% f. k7 ]) n AUTO Selects sources automatically in the sequence AES-WCLK-INT/ H* C8 R: s: _2 B% r0 Q" G4 M- o
VAR Indication only, active if the external source frequency deviates from 48 or- l: {$ r5 J6 [
44.1 kHz for more than approx. ±3 %.
1 l+ M+ L. j/ N5 _# t[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
' q0 Y% H% O: }. G" G! [, M either permanently (display: “HOLD”), or with automatic reset after approx. 2 s. h C8 L* H* O1 z# P
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
" s) W, e4 Z" {# N* S. t) N the danger of overloading the A/D converter with short signal peaks (if
* J C: q) @2 s3 e$ \ active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
; {" [& w! S0 L0 k6 o8 Y allowing for approx. 6 dB reserve before hard clipping occurs
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