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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 " G$ s4 q9 o. t/ |" V; u
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英文电子说明书+ D" K1 d" ^- A
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory {3 Q- ?+ M. }" F7 z+ ~
default settings. The subsequent settings remain stored in a Flash EPROM
, _/ C" S/ f% Q9 w' R after switching the unit off (unit contains no battery).
% N7 C5 u( F8 M4 ]$ W3 A5 Y[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
7 o( g n4 x6 r, K8 R between microphone and line sensitivity setting ranges.
+ M. H9 r( O) D* m1 q; b* g$ a/ f Mic: Range –40...+20 dBu
. j y) h3 @3 {3 q! v- B; [ Line: Range +14 dBu, +24 dBu
4 P k5 u/ P: p: g2 l, X( P0 E3 d[3] Fine Gain Potentiometer for fine input sensitivity setting.
7 Y4 I! c7 k- H; v) S0 p: e Range of additional gain: 0...+15 dB.5 E& O! Z! ? Y% }
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
$ @5 p0 R8 x8 w2 J: b! @) H the dBu value of an analog input signal which causes a full-scale output of
0 T5 u- ^- P; _" ~5 p. Z( T$ x the A/D converter./ O" {& {; F8 o0 i; ]3 l
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
+ X9 v% z1 v% j- p, K- Y9 G the peak level is therefore +16 dBu. The “Input dBu FS” rotary* r! j3 a7 e9 W1 }9 \5 ?
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine1 P$ f* P) H. P" ]0 A# X
Gain” potentiometer [3] increases the gain by 8 dB.
) t( K) e) A3 }! _4 [% Y[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.. t7 {+ l% I [' g4 a
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
# h% Y ?7 R* m7 v4 X have more body; percussive instruments are less aggressive.
# y, Y9 K0 A. I1 D& C The group delay behaviour due to AC coupling of the stages is different in6 T8 M8 @* C: S% l% l
tube amplifiers.
' }) [5 i& W0 F" X, {' { The “Bass Warmth” control allows to select the frequency range
! t* N- }# c. T% c3 n (10...200 Hz) within which the effect is active.
/ E5 I5 E1 Z' P5 E. L[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
4 f; Y' F/ Q) O. k6 v0 I T% w Valve amps have a characteristic response, mid-frequency harmonic content
# d5 C& f2 h- e. j! p h is emphasized.. @$ H% l/ x* H1 v
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.! E, i4 W( V/ O! J1 W9 l$ }$ p# u* F
The harmonics spectrum of a delicately overloaded valve amplifier is completely
, z3 | i; |% n4 `" j) k7 f$ X different from an overloaded transistor stage.
7 n4 Q- a$ \4 e' `% H, \2 L The “Gain” control adjusts a gentle overload while the odd-harmonics content
s) I( d. s6 b' r2 t1 P! C can be adjusted with the “Clip” control.
; f* c" j$ u: J- E# H1 m( p9 N( I5 R[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24$ w+ E$ E3 d/ O" T% r- b7 {
dBu FS.
2 H" ]( w. L& j5 F[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
$ n# K1 b- P3 P desired channel.. F) y3 L4 K8 P. ~
The “VALVE” LED is on when the Valve Dignifier stage is active.5 J6 [8 }; v+ [$ t/ a! s+ A
[9] INSERT INSERT function.* j/ S4 X% a/ A& S$ x" [
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
3 L( K O& n# y6 ~% L! [* c the valve stage (display: “INS”); the Insert Return is directly fed to the Line
: F1 x1 W; ~: L% `7 i0 s: V and AES/EBU outputs.9 {) I( L+ K7 D9 C" f$ d7 ]% E
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
- C% Z8 `2 |% U the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 \0 a! o) H7 O) v5 f the valve dignifier stage to the Line and AES/EBU outputs.: e2 j( X5 T+ k, i g
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
& T! P$ K. t1 R3 y stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
& `! @7 q8 o6 R3 q' c; o1 [ receives this signal; display: none).
7 Y, X: D8 x6 E( { Insert Send and Insert Return are electronically balanced and equipped with
) `7 f- {6 ?* P i XLR connectors.
; R( k' {% S$ \, z[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or3 v" i: v- @! i [
ADAT digital interfaces. Each input channel can be switched to one of the. V- U c# U/ \; U Y7 G
channels 1...8 of the multichannel interface. If desired, also a mono mix is
9 L: W) Z& Q' w4 [( y possible by selecting the same output channel for both input channels.
) F% `8 T1 u% J; q& v9 H2 K[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone8 a2 A; |& m/ i9 J) `) n
channel.
5 m9 B. z5 O: X& ^9 f+ e3 {. n Can be operated only if the input gain selector is in Mic position. The4 g9 i. f, L+ c
setting remains stored when switching over to a line gain setting.
7 _/ P. Z5 |7 w/ `[12] Activates the high pass filter on the microphone inputs of the desired channel.4 k2 X2 m( m5 N/ q
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.( H* ^' @1 P5 ?1 J* f3 B
Can be operated only if the input gain selector is in Mic position. The
$ T Z& r! t9 n3 W setting remains stored when switching over to a line gain setting.7 ?' A0 E/ k0 H% h
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
$ a1 a+ V/ w, ` X* ?: I' ?& U7 N" V# I[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:5 v: `8 ]5 Q$ ?) i; v" n
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with% m9 M, X2 f$ v# k
Noise Shaping (display: “16NS”) can be selected.
. g! c3 p g d2 N' E[15] SYNC Selects the synchronization source for the unit. Possible selections are:
1 U5 K2 }1 Q& p% d INT 48 Internal quartz reference, 48 kHz
3 e( C$ }% F9 _1 i* S3 ~3 j6 U. s INT 44 Internal quartz reference, 44.1 kHz
$ P; x6 `) T3 h WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)0 T$ n1 k( N* D; r: `5 X
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
! P! w' C8 W. Z1 {$ A. ?' E AUTO Selects sources automatically in the sequence AES-WCLK-INT1 Y* A3 t: D* n" o
VAR Indication only, active if the external source frequency deviates from 48 or
6 A3 q8 U$ O9 b 44.1 kHz for more than approx. ±3 %.
, K i. T/ A% b0 n[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
% C% f: U) H/ t$ i/ q9 \0 ^5 R0 g$ D either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
7 U2 |9 ~. ^& p$ D- r* J[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
1 X/ Y( Z9 j% u the danger of overloading the A/D converter with short signal peaks (if% D, Q. p# h, {5 N7 e0 r' {
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,# Q5 @$ N- T6 l/ B, p, B
allowing for approx. 6 dB reserve before hard clipping occurs1 r. Q: x) R4 ]; V+ K! n7 [
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