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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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% d7 ?% {4 e! V0 f; H* N5 E3 Q e( N英文电子说明书. y# V1 K5 E v' R- J5 V" L
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
6 G. D, h: D& B; { default settings. The subsequent settings remain stored in a Flash EPROM
# s. b6 t2 Q* O3 ^) t* x4 ?3 j after switching the unit off (unit contains no battery).
. n* {/ D. m/ E# P6 t& y[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
* x: D, a1 G4 n) q! {8 G between microphone and line sensitivity setting ranges.
! R5 h4 e: D: G" u8 u& G4 _% ]0 i/ k Mic: Range –40...+20 dBu+ [# L- j P6 b1 b) I
Line: Range +14 dBu, +24 dBu. ^: b, t, z2 O# D- B+ M: ^( O
[3] Fine Gain Potentiometer for fine input sensitivity setting.+ C0 q; o1 B" V# U
Range of additional gain: 0...+15 dB.* Z% f8 q4 Y" e) X, S3 ~
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
0 F8 }) w9 v2 R the dBu value of an analog input signal which causes a full-scale output of* f3 y" q% r- y* `" D
the A/D converter.5 J- I' i: S; E% c. f
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;; b0 T+ B' m0 [3 y, O
the peak level is therefore +16 dBu. The “Input dBu FS” rotary8 X" T' h) V' t: |# |8 q3 @
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
' K Q# l" h& p, P: @& S, t Gain” potentiometer [3] increases the gain by 8 dB.
+ @8 k# C3 {3 P/ E' m[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
3 V- v$ B2 C/ t! e& M[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals/ F! h3 R2 g6 R% E5 s, O
have more body; percussive instruments are less aggressive.
# J. L) E9 o8 ^2 _9 i The group delay behaviour due to AC coupling of the stages is different in
7 E6 V* x: U9 n* p9 J5 x' g! {2 Y; {3 C tube amplifiers.
& ]. E0 p. M3 d( V The “Bass Warmth” control allows to select the frequency range
1 r$ o" ? K# _' U (10...200 Hz) within which the effect is active.
( n1 y4 d$ G4 {1 G" g7 o8 v3 o[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
b( w4 c) Q% C# Q3 T' M+ p Valve amps have a characteristic response, mid-frequency harmonic content
3 j( V; |% J8 {3 B" ` is emphasized.- U: y2 c* ]8 E* A$ b% [: N
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.0 M9 C0 Q8 L; s& v. r! C: H/ o5 q
The harmonics spectrum of a delicately overloaded valve amplifier is completely0 k( L4 g: `, E4 }7 J: R2 q% v
different from an overloaded transistor stage.
$ n% _2 }) G$ t0 ? The “Gain” control adjusts a gentle overload while the odd-harmonics content
% y6 P' {3 U5 [( E$ Y+ [1 h; p can be adjusted with the “Clip” control.
( `5 V, a0 S: l/ G0 N[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
) D9 B1 l) l d( ]- V8 A7 I dBu FS.# ?% m9 p: O5 z: a' H
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
9 `" f+ U. l" ]/ o# v& W: B desired channel.2 D" |) W8 ]% I8 U8 h6 \6 T; [8 i
The “VALVE” LED is on when the Valve Dignifier stage is active." D1 X" C. k2 C6 s& L: b! U
[9] INSERT INSERT function.
3 Z7 U6 i5 ^% m9 H B First key pressure: INSERT POST VALVE, the Insert Send is tapped after
+ q( h/ V$ E& H) I the valve stage (display: “INS”); the Insert Return is directly fed to the Line
4 ^9 r% E+ \1 r) ] and AES/EBU outputs.
! l/ U) p% u( [. f* t: T, |* O Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before8 f9 q& @; ]5 Q" Q, C/ V
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via5 n+ N' t: y& M B9 t
the valve dignifier stage to the Line and AES/EBU outputs.
4 g; ^6 n1 O0 E/ _* ? Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
O0 b2 p( S6 {/ [& c @% r* H stage (if active) to the Line and AES/EBU outputs (also the Insert Send output" U1 @3 l& p7 G4 ]+ B% X
receives this signal; display: none).
+ Y5 I. P* T% i Insert Send and Insert Return are electronically balanced and equipped with
" o. ]! O6 v' o XLR connectors.( Y1 K+ B+ O; o( y p
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
# |$ s. T# U. z ADAT digital interfaces. Each input channel can be switched to one of the1 P" A7 W! m: n7 g
channels 1...8 of the multichannel interface. If desired, also a mono mix is
4 n0 w" b, \! X7 {6 f possible by selecting the same output channel for both input channels.
i5 F8 K3 `# e! g$ i[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone t* n, H: v9 E7 ^; ~) w( f
channel.
; b5 a8 b+ s0 m6 \9 _5 R$ y7 Q Can be operated only if the input gain selector is in Mic position. The3 e' F2 J: N) m
setting remains stored when switching over to a line gain setting.
) F7 F; g% v' e% ?, D[12] Activates the high pass filter on the microphone inputs of the desired channel.
- U$ J$ g+ H, u% j7 T% y Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
7 }7 A$ ^6 }. G7 Q, b Can be operated only if the input gain selector is in Mic position. The- v3 M& b7 B( z9 t
setting remains stored when switching over to a line gain setting.% d7 |' \5 T# p
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
% k+ ]2 C: O- p. e$ @5 A2 D# b[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
2 d' x- E9 c$ h8 G “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
- R8 L+ g1 q5 h, A Noise Shaping (display: “16NS”) can be selected.
* G& U; }& L9 ~3 n& w, e2 G[15] SYNC Selects the synchronization source for the unit. Possible selections are:
4 v$ ?5 `/ b- |# i% P8 ]8 j. J INT 48 Internal quartz reference, 48 kHz. D/ O+ r1 j- b4 v3 V! _, E
INT 44 Internal quartz reference, 44.1 kHz+ m, W* S2 L+ p- b1 D0 P
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
( J3 f4 `! u) c AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
' v8 [3 E6 l+ T3 t% D AUTO Selects sources automatically in the sequence AES-WCLK-INT
7 t4 u, Y1 Y* r VAR Indication only, active if the external source frequency deviates from 48 or
& z; U5 N T" v2 ]' T+ ?& U0 o 44.1 kHz for more than approx. ±3 %. V+ p: h( ~5 O* S: p$ c
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
$ v2 V& Y, z/ w$ W either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.. t2 r: J8 ]. P, _( Z5 q
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
+ i1 T6 }4 k. u" X7 y0 l the danger of overloading the A/D converter with short signal peaks (if% o! J/ s0 x0 o" V
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,7 D8 h% y/ z- J2 P- ]4 n
allowing for approx. 6 dB reserve before hard clipping occurs
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