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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 # S) @5 `7 U9 ], q: G3 q$ e
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英文电子说明书
4 O8 T; C" M6 B3 n7 g" }[1] POWER Switches the unit on or off. The unit is ready to operate with the factory! Y2 ]4 h* N% u& P7 f) Y+ k9 i
default settings. The subsequent settings remain stored in a Flash EPROM
/ ^) t! s( r% L* B3 S after switching the unit off (unit contains no battery).
) v& n \, O u3 n. R) f[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
+ J. x& b$ J6 c/ T7 S! K between microphone and line sensitivity setting ranges.
! ^2 i3 C5 _8 B% u Mic: Range –40...+20 dBu( j8 }! I" r* b/ w4 a# x
Line: Range +14 dBu, +24 dBu
8 Z. T! m# i: o/ ^8 q4 F' b[3] Fine Gain Potentiometer for fine input sensitivity setting.
; d6 b* z' @9 ]8 B2 G, ] Range of additional gain: 0...+15 dB.
. Q8 M( L5 o1 X! Z! p, G5 z& q! T3 q4 M Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
& v: k: Q9 M4 ~4 c) z2 \) a1 E( l the dBu value of an analog input signal which causes a full-scale output of& p1 c) `, p; }. ^8 K' g/ n
the A/D converter.
% Z' r8 x1 k% e/ l. Y* O' w* @ Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;/ ?+ r, H5 F0 M2 @. ]- n
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
. x. T& L9 y0 S, Q3 v( ?; D, G# f switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine6 F, o, i ?, Y, |7 a' F7 k' t
Gain” potentiometer [3] increases the gain by 8 dB.8 m, D2 \# [9 x
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.( U" y7 |7 N9 Q7 j; j: ~1 d9 o
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
. l1 G9 r# |' m7 F have more body; percussive instruments are less aggressive.. I& T6 v3 }: @2 E( m7 v7 d$ T
The group delay behaviour due to AC coupling of the stages is different in% x- A# [% L7 `$ {. W) E$ o
tube amplifiers." _. |0 r& m& M) P E- q
The “Bass Warmth” control allows to select the frequency range W6 E# c) P) R) E! y
(10...200 Hz) within which the effect is active.+ c0 u! ]( W) D4 A) f
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
( h) W! d% p' M7 F5 C7 G, S) F* U% e7 t Valve amps have a characteristic response, mid-frequency harmonic content' d; B$ Z8 Z& L- [# S
is emphasized., [# b7 y9 h# l9 }# o! o$ z
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.- y* ?7 H7 A3 w9 r# d
The harmonics spectrum of a delicately overloaded valve amplifier is completely# G2 f* R1 d8 `
different from an overloaded transistor stage.6 Q: S$ S& Y" Q$ u6 Q' t
The “Gain” control adjusts a gentle overload while the odd-harmonics content4 g. D! Z( E% J5 J
can be adjusted with the “Clip” control.
9 l$ S3 M* k" E4 Z3 j g[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
+ I# i) H8 ^, p. D' S" |4 W4 g dBu FS.
8 d- V1 X+ H3 D' a F[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
3 u' o7 X2 `$ V6 S% S( ` desired channel.
" W. s1 E( Q; ^6 z1 A The “VALVE” LED is on when the Valve Dignifier stage is active.3 v1 J0 u% r, |* S9 ~( G4 ^$ e
[9] INSERT INSERT function.
9 z8 m# f) u; A% l# E8 r First key pressure: INSERT POST VALVE, the Insert Send is tapped after
# s1 B6 R4 N( c the valve stage (display: “INS”); the Insert Return is directly fed to the Line
2 n. e8 i r# H0 h and AES/EBU outputs.; I& K: F2 E$ J
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
" e! l, A1 z7 \$ ?, j$ q9 { the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
) N( S% P- e3 x N J, v" d the valve dignifier stage to the Line and AES/EBU outputs.2 U: n5 X/ Q% r, }. b5 @
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier W: N! x0 h) x& X% k2 f- V i" W( u
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output; y6 p7 O( A9 N# j1 O5 g- Y
receives this signal; display: none).1 o# i- D: x3 I
Insert Send and Insert Return are electronically balanced and equipped with
' d: S* `' y5 G! p3 } z$ ^ XLR connectors.
: F$ E! {: f7 z0 C8 V[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or* z5 F9 ]3 M7 d# I; a
ADAT digital interfaces. Each input channel can be switched to one of the+ Z, d5 i7 }- L" ?/ x X
channels 1...8 of the multichannel interface. If desired, also a mono mix is
$ v9 s2 i7 ?$ ^' d0 c possible by selecting the same output channel for both input channels./ G( b$ I7 R W9 e3 Q
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone4 Y% E& C) O; x& |% x' z9 Q
channel.4 f$ X; E5 a4 _/ n8 ?1 H6 c
Can be operated only if the input gain selector is in Mic position. The4 |1 @+ O0 W- [7 s' }7 X e
setting remains stored when switching over to a line gain setting.8 Z2 ]! x0 Q$ a1 L
[12] Activates the high pass filter on the microphone inputs of the desired channel.' R+ p6 }. q$ E: R7 \
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.5 _8 A- t& Z2 S6 g0 l$ i6 z
Can be operated only if the input gain selector is in Mic position. The$ \% I! r; {* @1 q4 [ M2 d
setting remains stored when switching over to a line gain setting.2 n' O$ f0 Z/ X4 J
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* o* y( }% Y' {. I
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:7 ]6 ~! {* Q3 o' z
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with/ k5 O5 y2 V( d. j2 v; ? H
Noise Shaping (display: “16NS”) can be selected.
7 H/ @9 J8 D+ N2 a[15] SYNC Selects the synchronization source for the unit. Possible selections are:1 K0 _0 G# V3 M' O/ h7 e
INT 48 Internal quartz reference, 48 kHz$ ?- V4 v. W( }" z; }
INT 44 Internal quartz reference, 44.1 kHz0 ?2 ]( f2 ?) S3 R5 W. {* ~
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)% V- a/ ~" I2 ~( M! z: {# n
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)$ h6 D% N% J: w
AUTO Selects sources automatically in the sequence AES-WCLK-INT
: m- ~4 I( v8 F8 A! g8 U VAR Indication only, active if the external source frequency deviates from 48 or0 ~4 M6 o- ~( E6 x: L
44.1 kHz for more than approx. ±3 %.7 |/ G' A0 p: v+ u# R6 d
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –( Z3 w* W# o6 B
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.' o7 A, Q: O( b/ F4 P- r5 i/ G
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
8 Q, Q1 o t* F% g& c- X% _- L the danger of overloading the A/D converter with short signal peaks (if
, H$ U2 M8 k9 h( t active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
; T8 S& r. q9 B1 S ? allowing for approx. 6 dB reserve before hard clipping occurs
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