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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 ; `; b. {/ O! I4 P5 t( U
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0 V* E" b p, i6 L* w/ \英文电子说明书
6 {4 m& a/ f2 m& F; E[1] POWER Switches the unit on or off. The unit is ready to operate with the factory# _& V) x1 S! X, o
default settings. The subsequent settings remain stored in a Flash EPROM
" G2 i! {+ }8 R; @ after switching the unit off (unit contains no battery).
7 R+ u2 `: o4 m2 u3 T+ M! n1 K1 _[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position/ g# {: }. _7 I) W. f# K# y$ y
between microphone and line sensitivity setting ranges.& }3 G7 O: i7 c: t/ N
Mic: Range –40...+20 dBu7 L J9 ~; t) w) S$ V0 H
Line: Range +14 dBu, +24 dBu! z6 I- W) @& S+ P6 a: P7 j
[3] Fine Gain Potentiometer for fine input sensitivity setting.2 I4 e4 [% C! Z0 ~, O
Range of additional gain: 0...+15 dB.- {& s! R# V% V/ H) V
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents' T- d4 Q) ?5 p! s/ Z
the dBu value of an analog input signal which causes a full-scale output of
7 M3 A; K- F' _2 p& v5 a$ R the A/D converter.4 J0 _& [2 T* r, P, p# t. E. J
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;( L% D, z7 V. Z b% ]
the peak level is therefore +16 dBu. The “Input dBu FS” rotary+ _6 y( N" q. }, S8 k# [% i
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
/ n0 w8 k* r! w" ]9 u2 e Gain” potentiometer [3] increases the gain by 8 dB.
. z0 e& t5 e8 z7 q7 i' L% m9 [* R# {[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
) Z+ E) E; t7 a& F8 V0 t6 r[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
0 @* a5 x4 k" `. G6 J have more body; percussive instruments are less aggressive.
" z. s# o( i! q2 J) ~5 G& c The group delay behaviour due to AC coupling of the stages is different in4 H% w! E7 e) x+ S
tube amplifiers.. Z, N- ]/ R/ p5 P5 w0 n
The “Bass Warmth” control allows to select the frequency range
- H: n* Y" ~" v( C (10...200 Hz) within which the effect is active.
! c1 a, u4 y& j6 ?9 i, y2 Z' ?[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
. f+ Z% w7 ~; J+ ~ Valve amps have a characteristic response, mid-frequency harmonic content5 i& i" F) z: x- M3 h* h& ?
is emphasized.
& K( P, C1 t. [/ Y' I[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.0 o$ N) D/ E% \, I* R
The harmonics spectrum of a delicately overloaded valve amplifier is completely" T' f4 k+ ]9 y7 G( T# g
different from an overloaded transistor stage.
- k% \2 N, T; C) S! n4 ]' j The “Gain” control adjusts a gentle overload while the odd-harmonics content
/ i) t1 i1 z7 S" A0 M5 M can be adjusted with the “Clip” control.3 R. `7 O' N7 P. [! B
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24! V3 x/ W( j8 {. W" ^
dBu FS.
3 x" b! y9 ?& I5 Q* S[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the1 P+ t6 u& u+ ^' D$ N
desired channel.
* @' C5 u9 q8 |7 t: ^ The “VALVE” LED is on when the Valve Dignifier stage is active.
0 `! B4 ] f7 @( a( v[9] INSERT INSERT function.
0 J# T( o& D' N- N" U$ ^ \ First key pressure: INSERT POST VALVE, the Insert Send is tapped after3 h5 N" b1 M4 f
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
: P! h" B; a$ w9 @' M) t* S$ W/ g" I: z and AES/EBU outputs.
. m3 i$ d, D \4 W L; ^ Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
1 H1 A8 }3 U+ Z, {* W the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
" ]& S* Z! l0 D the valve dignifier stage to the Line and AES/EBU outputs.5 f* d9 z3 I/ ?" J. H7 Q0 K# s
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier9 f. p$ m% l) P0 w% ]
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
, V; E* i a* D# W o8 Z- u receives this signal; display: none).: m6 x; S \$ e4 W& R
Insert Send and Insert Return are electronically balanced and equipped with
3 f# P$ Y3 @$ U9 v4 `6 o+ n XLR connectors.% S5 a. d3 R/ c2 t9 T0 O& }
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or/ W1 J7 N# `( c7 a1 @
ADAT digital interfaces. Each input channel can be switched to one of the
, k4 ~ z" |* \0 g, T/ ^0 a channels 1...8 of the multichannel interface. If desired, also a mono mix is* \& c( K2 E* F9 N6 ~
possible by selecting the same output channel for both input channels.$ \# h( @: m) k2 l* V
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone4 M x! q0 h% e+ l, H( C) j
channel.& j( K9 e3 R; `/ {9 v6 `
Can be operated only if the input gain selector is in Mic position. The
) n' o ~9 F) w: R7 c6 k% I setting remains stored when switching over to a line gain setting.
( g, t/ o6 D- |[12] Activates the high pass filter on the microphone inputs of the desired channel.
- w: e" o8 K- u) Y Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
; s7 l: v9 Y% D- j1 J G% y Can be operated only if the input gain selector is in Mic position. The7 J; k9 A8 M8 w$ C5 e) n
setting remains stored when switching over to a line gain setting.
/ t. a, g8 A2 L+ \5 c) y8 ?[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
) t2 _1 D9 r9 U( [0 l% Q; S[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
+ Q& Q' c8 V( ?+ R4 ~5 e “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with( M, F8 m7 L0 Q6 v7 w
Noise Shaping (display: “16NS”) can be selected.
4 X0 R# m% T5 U[15] SYNC Selects the synchronization source for the unit. Possible selections are: x7 D/ z" ~0 g+ U
INT 48 Internal quartz reference, 48 kHz
$ t* N) r; w5 e. }$ d2 z0 v INT 44 Internal quartz reference, 44.1 kHz
$ h$ W6 z3 ^" | Z+ b- j$ O% D4 F4 w WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
" P7 M. N) w6 O2 O: A AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)3 ?9 |0 [* Q0 x: q8 G! y& b
AUTO Selects sources automatically in the sequence AES-WCLK-INT
, c! T. I" f, L( ~% F VAR Indication only, active if the external source frequency deviates from 48 or
2 K% K- R' J1 n5 Q 44.1 kHz for more than approx. ±3 %." M- z; Z. \, u% U* y! x
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –# x; r$ ~3 k9 n
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.' P4 l& x. k8 }3 t
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce9 U8 u h% \) `) s8 }! @9 v9 F
the danger of overloading the A/D converter with short signal peaks (if
8 H( V( a, z7 G. M2 f active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
5 q6 ~) ^3 }7 ^ allowing for approx. 6 dB reserve before hard clipping occurs
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