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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
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英文电子说明书: L" @7 w- a( w6 z) a( |
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory6 \1 i4 N8 U' n8 ?9 J. f
default settings. The subsequent settings remain stored in a Flash EPROM
, Q- B# d: d( R2 P after switching the unit off (unit contains no battery).) F2 X; U* U$ H, Z/ g! D. [
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
" V3 I u, }/ Q4 m) Q between microphone and line sensitivity setting ranges.
4 U! z# ^5 Y! L5 L4 r8 p( } Mic: Range –40...+20 dBu0 E0 D2 Z6 e0 n* u8 {4 p' Z
Line: Range +14 dBu, +24 dBu" l7 a; c2 _* P3 A7 x/ r, ?2 r
[3] Fine Gain Potentiometer for fine input sensitivity setting.- m! U3 A+ r' z5 }. S/ ]' U- r6 y
Range of additional gain: 0...+15 dB.; R2 M+ m- j8 e# A6 T; n( d
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
8 Q5 ?5 I" N s0 _- d the dBu value of an analog input signal which causes a full-scale output of5 P% M1 {0 G! G4 K
the A/D converter.) p! T' e2 q( e& J% ?
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;9 W3 t( _: H% x1 n- e
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
( [0 x; U: n4 F6 ^2 [9 V' x/ H8 q switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
F* {- c/ M) W5 c2 O& v1 N) e Gain” potentiometer [3] increases the gain by 8 dB.8 T' {( V' I& k6 E
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.9 x8 I1 q3 @8 s5 x/ P
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
) W) o. `* v* ~) J m have more body; percussive instruments are less aggressive.
( Y' S2 W, `% y* n+ T! @2 j The group delay behaviour due to AC coupling of the stages is different in: z) T, Q* j/ J, i& g3 \6 u
tube amplifiers.+ c+ Q& e: [. J! n$ O
The “Bass Warmth” control allows to select the frequency range6 v" D* X' F4 p6 m, H
(10...200 Hz) within which the effect is active.
4 a; k) n% ^& c2 W. P[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
' V( _+ d/ T$ `8 q Valve amps have a characteristic response, mid-frequency harmonic content" x8 r5 e; L6 ~% W. ~% @
is emphasized.
+ P$ l1 _4 c3 h3 t1 l[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
$ U! T- g0 Z7 B! d+ z9 L) z The harmonics spectrum of a delicately overloaded valve amplifier is completely/ Q$ k! B$ p* w# P( n5 {2 ^
different from an overloaded transistor stage.
2 @+ d+ p+ _4 G4 b4 U The “Gain” control adjusts a gentle overload while the odd-harmonics content
- @+ J+ v9 H7 o% f8 D K can be adjusted with the “Clip” control.; H+ q9 c3 F3 ]
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
, `: V z2 o) H P I3 o dBu FS.
6 ~; _; o3 Y0 K[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the/ |+ q1 [, P) P L' a3 Y" E/ n
desired channel.
" w4 @( Q( ^. f& G; a The “VALVE” LED is on when the Valve Dignifier stage is active.3 n7 Q) G# L1 h1 J( l
[9] INSERT INSERT function.
5 a& A( {6 M. t4 o0 @ First key pressure: INSERT POST VALVE, the Insert Send is tapped after
& e3 r# W) P- [% j9 s the valve stage (display: “INS”); the Insert Return is directly fed to the Line: Z# M0 [3 T2 p& w) m( y
and AES/EBU outputs., c0 ^# o( K( G# p U1 }$ T! e
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
7 ?& w8 A! n8 Y: l( h! z. U4 B; i; L the valve stage (display: “INS” and “PRE”); the Insert Return is fed via" r7 y! D# r! s# _+ n& n' F" H% M
the valve dignifier stage to the Line and AES/EBU outputs.
" e7 z5 l% V' X Third pressure: INSERT OFF, the input signal is fed via the valve dignifier( }) M" o Y$ h- M7 z
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output T9 A# h0 W5 A" l
receives this signal; display: none).8 {; F6 p; y( l" o* X* v: f' ]& M
Insert Send and Insert Return are electronically balanced and equipped with% N/ M8 e. L. ~
XLR connectors.+ [: t7 \$ e! }
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or$ x- i9 L! t5 f! {
ADAT digital interfaces. Each input channel can be switched to one of the* Y' s) ~, O! z6 d/ m% N3 V
channels 1...8 of the multichannel interface. If desired, also a mono mix is! s; ~% p ^ P; E) S1 J
possible by selecting the same output channel for both input channels.) c/ L) F+ i& v
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone1 a) r5 R1 O" h
channel.
3 j1 q8 _6 H' Q1 ~5 I& G Can be operated only if the input gain selector is in Mic position. The
, P9 J# ^3 ]; s) e setting remains stored when switching over to a line gain setting./ H; D7 f% N# ` A2 l8 Q j
[12] Activates the high pass filter on the microphone inputs of the desired channel.0 p* D1 g5 q' B7 n7 C
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
) d! u2 g' V! F: M( e2 | Can be operated only if the input gain selector is in Mic position. The
8 B5 f' E! Y- ^( @6 ~3 l setting remains stored when switching over to a line gain setting.
% ?& v# X+ L+ [6 b9 \4 g- `, L[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
, `9 P2 A& ~" T' i! T9 t3 K4 U: o[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
+ }' U3 {- s6 F5 j6 k8 a- r# q0 A: x “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
4 R+ l4 V+ j, \$ s* x( q, Y Noise Shaping (display: “16NS”) can be selected.
9 M0 s3 [$ V$ I[15] SYNC Selects the synchronization source for the unit. Possible selections are:
) d/ w% [% h* W/ J% L$ G! v+ ` INT 48 Internal quartz reference, 48 kHz& L6 c. K( d; H( C2 }" ?3 K( @
INT 44 Internal quartz reference, 44.1 kHz3 x4 |! W$ r) A
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)* Y" |: l5 e+ B
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
0 V+ A1 V6 T/ }- H f AUTO Selects sources automatically in the sequence AES-WCLK-INT* i X+ B, S4 q
VAR Indication only, active if the external source frequency deviates from 48 or5 Z: [! F4 w" v) _& [
44.1 kHz for more than approx. ±3 %.
9 [( v( H9 t; p6 t1 m! h3 F- v1 y[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –# m/ ]9 x+ ?( F" r, t
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
; q% |) d3 c* B7 A3 N+ P- \[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
, L7 M% \* |. K& |, i the danger of overloading the A/D converter with short signal peaks (if/ A1 f n. h9 U( j$ B
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
$ e/ K. u, x% a. L# J6 y allowing for approx. 6 dB reserve before hard clipping occurs
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