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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 $ ~: ~' g8 V4 F
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5 }- f2 d$ r2 J/ @7 Z8 D英文电子说明书
T+ f! @: e: L/ w2 d' s/ c1 G[1] POWER Switches the unit on or off. The unit is ready to operate with the factory2 f$ d/ d1 I% |# ?; U! F
default settings. The subsequent settings remain stored in a Flash EPROM
. }# G4 M6 y+ J4 j9 q after switching the unit off (unit contains no battery).6 D0 D; [+ Z% `+ u
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position2 J, e# K5 ~6 h# H5 R4 K! K
between microphone and line sensitivity setting ranges.
1 V" {9 u M, u% o Mic: Range –40...+20 dBu
& Z5 F. |( o! m, O, h Line: Range +14 dBu, +24 dBu
- D9 c. |1 t2 `1 e3 R3 u0 ~4 q[3] Fine Gain Potentiometer for fine input sensitivity setting.
+ i5 K; H3 ]- H, G% P Range of additional gain: 0...+15 dB.
) t c2 w' I& E/ J: l; F. S) z Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents) p* v" @. Y" N' S4 F" H/ V% |
the dBu value of an analog input signal which causes a full-scale output of
. f+ l3 ?3 e" X5 ^8 L/ ` the A/D converter., w; }& o9 }" a. |( j) U/ `7 s
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
% D& C" j0 e. F the peak level is therefore +16 dBu. The “Input dBu FS” rotary
2 v, i$ N8 ~0 H& x2 X* x& _. s: P switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
" _& t. O* Z! W% {9 [, E" L Gain” potentiometer [3] increases the gain by 8 dB.9 B' j% q( o6 t& t6 O- g
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.8 x1 X. k" L" S0 {) ?. H2 E
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals( a6 z) R% s9 s( I1 U! C+ ?& E3 ^
have more body; percussive instruments are less aggressive.; ?% n) P' p- F
The group delay behaviour due to AC coupling of the stages is different in+ w* k4 `, I" o) z: l; _" R
tube amplifiers.9 R* u) ]( Z* S+ U
The “Bass Warmth” control allows to select the frequency range
" ~7 {6 M6 B l t4 d (10...200 Hz) within which the effect is active.- `6 T: g' m2 _( e) a" B& R; x: _
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
2 ^& w5 k* k* q/ ~% v Valve amps have a characteristic response, mid-frequency harmonic content: R( @3 m* j" K/ m; A5 O0 y
is emphasized." n. A) j6 S$ r' L: y0 Z
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.; v2 @, e. I0 u6 {$ x6 }0 U
The harmonics spectrum of a delicately overloaded valve amplifier is completely) _) v) w1 `0 b, K7 E9 E+ \# G
different from an overloaded transistor stage.
5 W( T5 P' L* }& M) C# y! O The “Gain” control adjusts a gentle overload while the odd-harmonics content
) b4 r% z: p+ |+ B2 W8 Y% Z: Q can be adjusted with the “Clip” control.! Y0 Y6 u) k) W) }' c/ w
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
! G/ ]: |. e' Y; p3 |0 h5 t dBu FS.4 v1 W$ N a* T C
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the, A2 y3 F9 [% [& _5 H8 k5 l% e7 t
desired channel.- Q; Y( m+ l! C' L
The “VALVE” LED is on when the Valve Dignifier stage is active.
5 `! M0 _& \6 D% c! E( y! M[9] INSERT INSERT function.) p. A w# B; g/ u5 e& R
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
; w6 }- P0 {4 w2 s5 L4 N9 i the valve stage (display: “INS”); the Insert Return is directly fed to the Line7 m3 W9 [# o" |1 ?5 t! _: B' x9 ?3 L
and AES/EBU outputs.
" E( W; g* p; D0 d% ^% O Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before5 s- `4 U/ Y" {/ ]1 p' {5 k4 L
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
9 |! y, V1 k+ M& y( f+ ~! V the valve dignifier stage to the Line and AES/EBU outputs.
7 u1 h9 M$ t9 k3 n2 l, m8 K Third pressure: INSERT OFF, the input signal is fed via the valve dignifier! W. {, A6 f8 {3 M' b
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output5 G$ L, c! l' Z( l4 I$ e
receives this signal; display: none).& u7 R* P2 t+ G# [4 U
Insert Send and Insert Return are electronically balanced and equipped with% c+ f9 r2 E8 v9 C/ Z) N3 P9 d
XLR connectors.' l" \+ e- \9 M* X$ I- `
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or& y4 q1 z2 z9 [& |+ x7 ~% f
ADAT digital interfaces. Each input channel can be switched to one of the+ ^' R! ]3 p8 o8 g
channels 1...8 of the multichannel interface. If desired, also a mono mix is0 C0 j/ Y) S2 R: ~) o, \
possible by selecting the same output channel for both input channels.( _* L6 U7 r$ z9 J* ?! Z% c
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
7 ^& I$ A, M# _6 A* i: C channel.
1 J" T h/ j: r. y/ E3 }7 l Can be operated only if the input gain selector is in Mic position. The/ c' a# a$ l9 ]) |# a
setting remains stored when switching over to a line gain setting.
8 @7 X& [+ u. z[12] Activates the high pass filter on the microphone inputs of the desired channel.
1 Q4 `0 L3 `) e% U9 N8 f Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
4 m$ e, q; S6 D% {8 q Can be operated only if the input gain selector is in Mic position. The
0 J2 l5 f$ M& C0 l setting remains stored when switching over to a line gain setting.7 {1 [, M* r3 d9 b1 j; ~
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* l* \ P% D3 ~/ F
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
7 M( @$ m6 t6 J. g: p- r0 d “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with6 }# z( H9 x4 H
Noise Shaping (display: “16NS”) can be selected.
8 `# N; e: L3 i[15] SYNC Selects the synchronization source for the unit. Possible selections are: j& L2 s1 l. \) N. [
INT 48 Internal quartz reference, 48 kHz
6 ^! \" h! |5 a INT 44 Internal quartz reference, 44.1 kHz
* h; Q) |& b2 T9 M4 G8 v* ?4 t9 _6 s R WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
9 T$ Y% J5 J7 ]* H) K' m2 \ AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
_1 D) f3 D1 Z0 B AUTO Selects sources automatically in the sequence AES-WCLK-INT" ]; I5 U# y/ x# v0 V
VAR Indication only, active if the external source frequency deviates from 48 or4 w. s# H; l" P( d
44.1 kHz for more than approx. ±3 %., e& e0 {, ~; K* t1 B; b
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –$ ~0 o& e+ O( c5 w
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
, E+ @* l d: V# F[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
f) [8 }* D1 `9 K; H1 X the danger of overloading the A/D converter with short signal peaks (if
, z* v8 H- G4 V$ g; ^1 B% J. f. r active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,& Z$ ?3 j5 B Z
allowing for approx. 6 dB reserve before hard clipping occurs! ^( i" B; ^, H! A$ a
- t8 l# D' A' W+ z0 w 7 R$ |& }0 s$ q2 `4 n4 B
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