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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 8 F C; k6 m' _9 K6 b4 e
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, ^8 g' R0 ~- v5 y/ e# } u: x' w5 k英文电子说明书
. [* x/ @! C0 d' P% f[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
. @$ l+ {5 t! S. r default settings. The subsequent settings remain stored in a Flash EPROM
8 N( R5 n$ ?: e% E2 {- T after switching the unit off (unit contains no battery).
) g, H# U. A, U6 L/ Z7 A[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
# D$ V- }7 M- V) Q1 J% W0 p between microphone and line sensitivity setting ranges.
g ~% I) [+ H0 v: ]7 w Mic: Range –40...+20 dBu
7 K7 H; D4 g& I0 ^ Line: Range +14 dBu, +24 dBu
" P1 x8 R3 H6 j& U[3] Fine Gain Potentiometer for fine input sensitivity setting.
) A3 V( J( j/ M" s1 x Range of additional gain: 0...+15 dB.9 A- T! o8 M, ~, r) k: L
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
# B& H/ _( q$ s) g8 D! i the dBu value of an analog input signal which causes a full-scale output of1 c! _& r0 @, q9 S
the A/D converter.
# p! z& t' N9 H% F% S Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
! v8 p/ |) P, T! ] the peak level is therefore +16 dBu. The “Input dBu FS” rotary
* A4 h, h: {9 E- V( Z- m3 q switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine( U$ i5 C7 @# L+ ?+ `7 }2 E
Gain” potentiometer [3] increases the gain by 8 dB.
0 t& O+ s1 _- D" ]& K, |; H[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
$ I# N3 B8 O" B- V7 `[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals/ U( r$ W2 P7 j6 c6 A. f
have more body; percussive instruments are less aggressive.
: e% U( O( Q7 E/ y The group delay behaviour due to AC coupling of the stages is different in
2 S0 K: J+ c8 V( l0 x: y& c. I7 c3 U/ u tube amplifiers.2 x$ K6 w! P; q4 U
The “Bass Warmth” control allows to select the frequency range
# H8 W2 ]! M8 p! Y! W& M7 P (10...200 Hz) within which the effect is active.
6 Z+ V9 f* t6 T& Y$ H[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.* [; h4 f7 J% r
Valve amps have a characteristic response, mid-frequency harmonic content
! k' q6 N8 n' w3 e- g4 u is emphasized.& r( O6 H: p$ d* `
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.# W. H% I% C0 r6 H( @. \8 h
The harmonics spectrum of a delicately overloaded valve amplifier is completely
% e W& U2 K( ^( ` different from an overloaded transistor stage.; C6 |* g+ u* v' l' u3 H
The “Gain” control adjusts a gentle overload while the odd-harmonics content
6 \2 D- b4 G) ^! t* }' r3 D can be adjusted with the “Clip” control.& p+ j, |; v0 M
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24' Y/ R- o) r5 b F: |
dBu FS.
r( E1 |# B2 e c: Z5 b[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the4 i, W* a" m. i( c, |
desired channel.
! v' j% B0 V+ @9 h The “VALVE” LED is on when the Valve Dignifier stage is active.
' K; T; W1 c [* ?$ I) s* \- w5 F[9] INSERT INSERT function.
\9 N- r, q; y9 W1 g; a1 Y First key pressure: INSERT POST VALVE, the Insert Send is tapped after
# d. X% p/ O- R- x the valve stage (display: “INS”); the Insert Return is directly fed to the Line
9 E& E, O$ D( |2 [4 H and AES/EBU outputs./ ?/ P4 w' }/ \& m
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before ]( l& ~2 n2 t( t
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via) X3 d3 R; m: z. H, s# S) e! O2 i
the valve dignifier stage to the Line and AES/EBU outputs.9 A9 D4 F0 Q7 g- M; U- l$ [: n
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier6 L- M9 ]3 t5 B6 D" \
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
: E( s( e7 j6 k$ j0 F receives this signal; display: none).& X; V% Q$ g U/ \5 s) h3 O
Insert Send and Insert Return are electronically balanced and equipped with6 L6 { M% L: A& E7 b
XLR connectors.
' S( s' ^) @% p" T3 ]6 G[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
9 J- {* e9 w g ADAT digital interfaces. Each input channel can be switched to one of the8 o& Z, _4 U& {7 p) {) _# l. `0 }8 Z
channels 1...8 of the multichannel interface. If desired, also a mono mix is
; K" [# x/ s: d7 ]# Y% D7 O. l possible by selecting the same output channel for both input channels.0 Y6 a+ k; y% X
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone( Y1 U. H7 N" D( e) e% n" J$ C
channel.
3 U9 v8 b- _! W( B( e& d i+ R- Y Can be operated only if the input gain selector is in Mic position. The8 k6 C8 Q0 ^; @, c- R
setting remains stored when switching over to a line gain setting.
; m0 H! c0 O' a' \# R4 J) A; j[12] Activates the high pass filter on the microphone inputs of the desired channel.
4 W- L, S3 }' C8 v Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.- @/ o8 y5 C: d; H7 `) a
Can be operated only if the input gain selector is in Mic position. The
( Z3 v1 J5 {5 v- G; w0 Y# v+ L setting remains stored when switching over to a line gain setting./ B: M1 H3 P: e/ r: j
[13] Ø Toggle key to activate the phase reverse switch of the desired channel., _! b0 L& `4 {) x! c" h7 a; U
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
. O& h2 s0 t% Q “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
7 @( L7 S: ^( h! D z& F; g' v% [ Noise Shaping (display: “16NS”) can be selected.3 e0 C2 g4 U1 S7 h
[15] SYNC Selects the synchronization source for the unit. Possible selections are:2 d2 S6 q+ {: }3 Y
INT 48 Internal quartz reference, 48 kHz
+ z: b/ p8 ~/ D" r6 L8 R( D INT 44 Internal quartz reference, 44.1 kHz
9 l2 K" e1 n" v% p" K" X WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
. d8 ?+ i. z) e$ O0 M AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
3 u9 p$ C! b9 P3 o K# l AUTO Selects sources automatically in the sequence AES-WCLK-INT' o r8 K" e: l
VAR Indication only, active if the external source frequency deviates from 48 or
: e0 N6 |0 ^9 N3 S o! M6 o 44.1 kHz for more than approx. ±3 %.
- h! f G1 q- D( x$ s1 U+ v: ~& g[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –7 u2 L6 M& ~8 C4 A
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.9 P; x( S' M* }+ o8 W% z6 h1 o# r
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
3 V$ [5 }2 g7 B7 }0 C5 r d) a8 u the danger of overloading the A/D converter with short signal peaks (if( y& {5 b% B/ J& K' K; e3 }
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
# k W+ J; C1 t$ k9 _9 u allowing for approx. 6 dB reserve before hard clipping occurs
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