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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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英文电子说明书
2 E, e7 H5 i& g- `: d, J8 f' l[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
* _8 o7 f+ z% ~ _ default settings. The subsequent settings remain stored in a Flash EPROM
2 i, P' M8 V! k; P' |; |/ z8 K after switching the unit off (unit contains no battery)., R$ r) |3 T3 a
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
, `- X9 e2 j+ |3 E between microphone and line sensitivity setting ranges.- Y* _$ o( b5 Z
Mic: Range –40...+20 dBu5 U+ U# F, l/ n+ K* E( r
Line: Range +14 dBu, +24 dBu- Q9 b {% u% r: I; B- @. S8 K* |
[3] Fine Gain Potentiometer for fine input sensitivity setting.& N$ [- t8 X( J! S1 l( O
Range of additional gain: 0...+15 dB.
' i) |/ Q& O- h) `" h7 e' E' h Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
, t" g" h2 s1 M) a9 T the dBu value of an analog input signal which causes a full-scale output of
6 x, c! l) C9 ?9 g$ c' B! A$ F& `1 ] the A/D converter.
1 ?; R2 Z z7 }: e7 S+ w% R& C Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;" M9 N. Y% _+ a9 D4 L; U
the peak level is therefore +16 dBu. The “Input dBu FS” rotary g% C- ~& B5 O
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine# ^. [# }( B' t0 _" @
Gain” potentiometer [3] increases the gain by 8 dB.
0 s5 p5 |- B8 F: F% L( M( e[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
z4 o: P( i2 a) n8 G1 k, D[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals, |- n" ?- v# s9 ?3 R9 j: j
have more body; percussive instruments are less aggressive.
3 Z0 x& @8 c1 k/ d0 K( p The group delay behaviour due to AC coupling of the stages is different in
; q: c: u* ?+ x U tube amplifiers.
) |9 F$ M. ]) Z8 m The “Bass Warmth” control allows to select the frequency range+ k; z, W. |/ m( ]
(10...200 Hz) within which the effect is active.1 h1 c3 Y* f7 V
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.. b6 Y; `/ p9 h1 G$ b- l
Valve amps have a characteristic response, mid-frequency harmonic content- j1 y2 F5 d. h. I5 K3 p6 n7 _' u4 @
is emphasized.
! d, K4 ?+ l: ^$ N5 ?[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.: i0 l" i! ]- v# z
The harmonics spectrum of a delicately overloaded valve amplifier is completely7 T3 d7 E b" l0 ?& A/ O- S
different from an overloaded transistor stage.: w3 h6 g: z: e& d1 f* w8 y3 w
The “Gain” control adjusts a gentle overload while the odd-harmonics content: k% k; m! A4 y
can be adjusted with the “Clip” control.4 z! U: ^+ x0 W& }2 R1 {8 O' V
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24+ Q& E% G4 ^9 T/ H( A x9 t1 T
dBu FS.
9 a$ e( [/ K9 _, ][8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the; W. g% V8 v. P0 Q( S! Z) v
desired channel.
6 L# T# g* T) i0 P) I% J$ U The “VALVE” LED is on when the Valve Dignifier stage is active.6 b9 s. z# n) P9 f
[9] INSERT INSERT function." R: O5 @$ g+ y6 r ]
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
) O0 Z, g2 @5 R& J: e l+ W2 _ the valve stage (display: “INS”); the Insert Return is directly fed to the Line/ \7 ]) K! _3 u/ c: J' `
and AES/EBU outputs.
, b3 Q. |( f2 |+ D ] Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
+ r) n: ]0 s+ q) O& r- r: ~9 w the valve stage (display: “INS” and “PRE”); the Insert Return is fed via9 {. f' Q, |) Q
the valve dignifier stage to the Line and AES/EBU outputs.
7 A! V2 C5 H- } Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
/ w. B5 Y) b( z stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
, A$ }' Q9 }8 h; q8 c/ } l) S receives this signal; display: none).* @; J9 D# r% o' o$ n3 ]6 k
Insert Send and Insert Return are electronically balanced and equipped with
6 k/ B3 M, G0 R3 |" s XLR connectors.$ Z+ f! ?/ c2 I* E" }1 `9 o* t
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
( Q: w$ R5 e) R5 g' P0 S# g ADAT digital interfaces. Each input channel can be switched to one of the
* b7 A4 L3 k" q# p% w. m$ q% k! K channels 1...8 of the multichannel interface. If desired, also a mono mix is
" l! D. }' n. w7 g8 A0 W possible by selecting the same output channel for both input channels.
0 W7 F" l0 x% O& `3 m, [' n) ?' f[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
; b+ a$ ]% w& {' f# l3 G channel.
3 N0 R9 t5 \$ Z: B7 y Can be operated only if the input gain selector is in Mic position. The
# @7 i2 g3 ^0 Z% M setting remains stored when switching over to a line gain setting.
' a7 ^" G* G8 Q E) _[12] Activates the high pass filter on the microphone inputs of the desired channel.; l# t7 U. Z* Q! o! m
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
+ n/ T/ j* D- P3 Y3 a% Z' Y, Y7 k Can be operated only if the input gain selector is in Mic position. The
% N7 n+ Z( ~; j setting remains stored when switching over to a line gain setting.
) a* p0 T8 C* X6 z+ G[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
8 U: J( G) M. v$ g7 S5 o) V" P[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:" i9 _2 V# V+ r8 Z) d! ~9 p
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with1 |; R4 L& O1 D6 _6 }) O
Noise Shaping (display: “16NS”) can be selected.
" e7 L- ^' ^6 o8 N! ~, u[15] SYNC Selects the synchronization source for the unit. Possible selections are:" A7 o& M' M6 ]0 b3 U% W: {$ o$ E
INT 48 Internal quartz reference, 48 kHz
3 x8 I1 O. m; d INT 44 Internal quartz reference, 44.1 kHz
6 v) W9 i0 h q8 g ^ WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
. m/ }5 r9 l& O5 @8 |( ~& O AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( U( w9 n( O: Y2 a4 ~ G( k
AUTO Selects sources automatically in the sequence AES-WCLK-INT1 Y, F$ Z% H2 X
VAR Indication only, active if the external source frequency deviates from 48 or
) ?! }1 _+ f/ [ ` 44.1 kHz for more than approx. ±3 %.
6 r! t- P3 k$ @- L; O, D[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
/ f0 |1 o' ]& H9 H0 E% ? either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
% D/ q# ~6 @8 ]& ^ F[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce( e7 h: V0 T( N9 c( w% F0 G
the danger of overloading the A/D converter with short signal peaks (if& s. {0 p- h0 E# W
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
6 Y- O7 o0 n5 h6 H. T allowing for approx. 6 dB reserve before hard clipping occurs4 {0 n, J5 p9 H/ O1 R4 n2 f p( n: W
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