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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 7 p0 M! g0 i( x+ y. F6 A
& Q# Y k, D* Y8 R9 e! T+ w, y英文电子说明书
4 L* f+ f3 |! F- o) }[1] POWER Switches the unit on or off. The unit is ready to operate with the factory4 F2 j! x1 C0 h
default settings. The subsequent settings remain stored in a Flash EPROM
* x2 T' s- a7 D9 j' s8 O* B after switching the unit off (unit contains no battery)./ O2 }! @# F: R/ c! \7 j
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
$ T$ G. R" G! X) ?% k between microphone and line sensitivity setting ranges.' y( v0 e {3 U6 {: r- N. S9 w
Mic: Range –40...+20 dBu
1 H" a5 R. H4 J7 }# V1 Z Line: Range +14 dBu, +24 dBu
' `' b; C% K0 H' f% k- i/ C" f[3] Fine Gain Potentiometer for fine input sensitivity setting. H1 d( w3 f! r1 C+ s3 ^: {9 R
Range of additional gain: 0...+15 dB.
, K; T( q3 {2 P: u3 R" @+ A Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
: N! ~" a- C8 i3 K% v$ R, [5 Z the dBu value of an analog input signal which causes a full-scale output of
: o3 w' u, Z( ? the A/D converter., O8 ~" ^, G& w6 n6 o" P
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom; i! Z l$ U, l$ n
the peak level is therefore +16 dBu. The “Input dBu FS” rotary$ s) m8 h6 c3 w* y% @
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine4 T L! `8 {' L$ y+ a$ G( h, E
Gain” potentiometer [3] increases the gain by 8 dB.
+ ?3 {% r0 x2 V$ r[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
" I) D; u& k5 U7 c: }[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals5 N4 P7 Q" N. s- X' V/ G: w
have more body; percussive instruments are less aggressive.
( G6 |- n# ]3 R7 ` The group delay behaviour due to AC coupling of the stages is different in
1 T6 b5 X% z6 @& p, S/ v2 c! N tube amplifiers.
" x, J: e- ?( \- ]; K, } The “Bass Warmth” control allows to select the frequency range% y7 o3 t( O* q- G7 N g: z n
(10...200 Hz) within which the effect is active.
! N6 L. t8 v! m% Y2 \' o[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
3 ?! ]$ A1 N8 C7 G: K9 m Valve amps have a characteristic response, mid-frequency harmonic content
* V. c: B! x3 I; S" x. \ is emphasized.# T2 k t/ N; e/ h3 h% n3 M
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer." h+ _ x- H9 g+ I7 \0 O3 d& G6 X- j
The harmonics spectrum of a delicately overloaded valve amplifier is completely
% t. s. |; P6 }% ]& y different from an overloaded transistor stage.9 w1 b0 j' ?$ o. N& z- ?
The “Gain” control adjusts a gentle overload while the odd-harmonics content8 A7 H/ T. R: ~% v9 `8 u
can be adjusted with the “Clip” control.7 }1 Z; x' H: w7 T0 m! e3 ]
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24: y1 P& ]# D& Y
dBu FS.
6 o+ }: i: Y* G+ m$ `( L, g# G! _[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the3 x) E# r, s x& P( F* o# \
desired channel.
3 ~5 j: c- l6 c. z+ s+ Z& l The “VALVE” LED is on when the Valve Dignifier stage is active.
4 J q. J6 f! V' W[9] INSERT INSERT function.- @' N7 a2 Y( W$ R( ?3 @
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
; Z' v6 A$ N9 D* y2 V the valve stage (display: “INS”); the Insert Return is directly fed to the Line
6 A4 m. _% ~, [: U and AES/EBU outputs.7 B$ }5 J0 j' e @, E# e$ }
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before/ p1 z/ j+ j* Q' |6 m$ w( p; w
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
4 y' d$ [! k6 a4 j8 u9 | s% F. N& W the valve dignifier stage to the Line and AES/EBU outputs.# O, Q. m$ c Y d/ T
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier, L6 A# L: Q n; c8 K
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output) _" m2 J7 S6 C( c5 B$ P+ j
receives this signal; display: none).# ^! Y5 t8 E. u$ g
Insert Send and Insert Return are electronically balanced and equipped with" C; Z2 O$ @& t3 j( P' {& K1 Q
XLR connectors.
; e: Z% N- E: b4 z$ d[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or$ W; ~8 G0 c4 s2 d
ADAT digital interfaces. Each input channel can be switched to one of the* V4 ~" v" t% ~7 J G
channels 1...8 of the multichannel interface. If desired, also a mono mix is R) P# O6 H* E: [4 [: F% X6 C
possible by selecting the same output channel for both input channels.- f4 }4 h5 O5 M5 u( y! ^
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone5 l' p; F8 ~& A o' B. z4 t
channel.
& @9 G% X! i! b, J$ c7 D F Can be operated only if the input gain selector is in Mic position. The: l: Y6 j+ s3 k Q. m3 n4 T
setting remains stored when switching over to a line gain setting./ L9 b1 C: q8 p# I" A4 Y
[12] Activates the high pass filter on the microphone inputs of the desired channel.
2 f; Y$ v- v, F! ^" F- t Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
" p3 R$ c/ r) W. w/ } Can be operated only if the input gain selector is in Mic position. The
$ k+ K4 X5 |3 o/ U g1 G) |5 J setting remains stored when switching over to a line gain setting.8 w. g U1 x0 C0 g. a; T$ x
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.3 v- k0 P7 l8 C ?, I% Z
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
) i4 d1 E# d$ d' f; ` “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
! ]5 @, M' |, e, i9 |0 a" i Noise Shaping (display: “16NS”) can be selected.) ], ?( n6 Z) r/ g( g
[15] SYNC Selects the synchronization source for the unit. Possible selections are:( K. Q3 z2 u! D1 V6 K
INT 48 Internal quartz reference, 48 kHz4 ~/ {; C' m! k; K/ e0 \0 O) `, [1 x
INT 44 Internal quartz reference, 44.1 kHz8 w! |8 P6 z9 Q6 {! L8 @
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)0 N2 i* `6 o$ y3 N- i" h
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)8 S, b, H5 c/ f+ K7 D' h
AUTO Selects sources automatically in the sequence AES-WCLK-INT. c( i# }$ K6 S: }: F3 }# q
VAR Indication only, active if the external source frequency deviates from 48 or
- W) d' i, H" t9 S! b: _# z 44.1 kHz for more than approx. ±3 %.
; M2 Z# E9 J; g, P6 h( g[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –- M: Y/ J8 V p% j' x
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
; A2 f! }" e! c( u[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce+ X- {6 S: m' J$ [9 f1 Y( H, ~+ G* R
the danger of overloading the A/D converter with short signal peaks (if2 F- e2 C5 B/ i9 \
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,6 ~. F' q% Y. \0 W: U9 I
allowing for approx. 6 dB reserve before hard clipping occurs
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