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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 " ~! {" c8 u+ k* z9 X: Z9 h; ]
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1 ]! ]' g+ K, t' c2 d5 U+ C英文电子说明书4 w( I1 S# ^; z0 c+ k% X$ L' m
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
7 L& s5 K$ A6 `; z. _9 R default settings. The subsequent settings remain stored in a Flash EPROM4 X! a) o9 k4 B4 @% a
after switching the unit off (unit contains no battery). q. [" o6 q. R5 {/ E6 Y
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position- ~$ x% Z4 d) E3 R. e
between microphone and line sensitivity setting ranges.
; ^, _6 F: t6 ^ Mic: Range –40...+20 dBu( D8 @; p7 K; Y! E; I! ?
Line: Range +14 dBu, +24 dBu( W; @# c8 I$ E5 B, _, B4 F
[3] Fine Gain Potentiometer for fine input sensitivity setting.- |, b1 f! T" q+ D& e7 P+ X5 Q
Range of additional gain: 0...+15 dB.& s7 A9 z3 m" V3 m8 o) V |8 X' X
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents# }' j- q, P% O% I+ |% ]& y
the dBu value of an analog input signal which causes a full-scale output of r+ J3 o$ J! c" M3 c( Q5 |) ]
the A/D converter.
: M5 W9 g7 a! [! A- C Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
7 t) a; J5 T' W0 T the peak level is therefore +16 dBu. The “Input dBu FS” rotary. l: a# E% x9 `- B+ }4 J
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine( @# k) c: d# J
Gain” potentiometer [3] increases the gain by 8 dB.
- p" q$ J0 e$ F( V4 k[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
! f+ T1 ~" ~. z( C y! p[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals$ P: X! Q2 W$ r% F
have more body; percussive instruments are less aggressive.
% _1 J" @8 M6 O/ }2 {( ] The group delay behaviour due to AC coupling of the stages is different in
# Y! y J0 v. R$ ] tube amplifiers.
) C2 D% P: i2 U g7 F" q; d0 v The “Bass Warmth” control allows to select the frequency range
/ \+ c% |$ O& T2 R (10...200 Hz) within which the effect is active.
6 I: [: G5 ^3 I7 L6 h. \/ r$ P y[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments./ V5 y* P. t# {- [) w3 D0 }, h
Valve amps have a characteristic response, mid-frequency harmonic content
2 ^) x2 T- Y" Z% ^ is emphasized.- V* w) A# Z6 d U
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
: P% v: c/ D0 u- g, a The harmonics spectrum of a delicately overloaded valve amplifier is completely. m4 p0 p. s, p. e" h, w
different from an overloaded transistor stage.
& G- c* [/ }5 O! q$ r The “Gain” control adjusts a gentle overload while the odd-harmonics content
+ t3 G; }. [+ E- w( {7 O can be adjusted with the “Clip” control.: z4 m$ [# E2 v6 H$ G# I
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
4 E+ y8 L, |& ?+ @ dBu FS.
# ^7 c5 W- b+ A: ] Z' A% `[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the- s% L& x" r( F8 A2 I; p$ x( u
desired channel.$ j& Q k! Q* @; r
The “VALVE” LED is on when the Valve Dignifier stage is active.
, l {- B( A& f$ p[9] INSERT INSERT function.
; H/ d- N; S- d& [+ W First key pressure: INSERT POST VALVE, the Insert Send is tapped after
8 J' B$ P0 Q% L! u2 k1 p, u1 ~ the valve stage (display: “INS”); the Insert Return is directly fed to the Line
: X5 u6 Z0 i) ~2 U2 V5 U and AES/EBU outputs.) A. X2 L2 G0 {( Y
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
9 _, B8 ` N9 t5 I, [ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via- `: a9 P3 {- h! O$ o
the valve dignifier stage to the Line and AES/EBU outputs.4 X* c4 ^6 Q- R. Y' y1 a
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier- h. c' D; B+ k" h0 ]% g
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
% j0 F4 H; _8 w' r receives this signal; display: none).) `$ u7 ~* d& j, P- q
Insert Send and Insert Return are electronically balanced and equipped with! V+ g' ~$ T, @+ S
XLR connectors.
' k" l4 \8 \4 W, m7 q! S[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or. S& B% Y$ k- Q; U! ^
ADAT digital interfaces. Each input channel can be switched to one of the
3 ]" a3 [# N: b channels 1...8 of the multichannel interface. If desired, also a mono mix is' b; U% r" E% W1 j, M3 j
possible by selecting the same output channel for both input channels.5 y* l4 @9 m5 k
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
+ Y4 ^- [# R5 M% o# @. X: N channel.
8 Q7 s9 L8 E0 @2 T& _4 `& Y Can be operated only if the input gain selector is in Mic position. The
% R, B$ t3 i; E setting remains stored when switching over to a line gain setting.
0 n: U% f- R0 g8 z[12] Activates the high pass filter on the microphone inputs of the desired channel.
) Y& z; p, L& |+ u6 o& _, b% x! y0 g Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.& W8 ?7 y5 B8 [4 `
Can be operated only if the input gain selector is in Mic position. The. Q* ?+ d# s) i
setting remains stored when switching over to a line gain setting.' Z4 C8 ]: P H. B
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
4 {1 N9 r( T w% y0 Z- |[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:( i# y, W( P# g, u
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with6 c4 K1 Q0 @4 }8 W3 Z5 Y1 B) r
Noise Shaping (display: “16NS”) can be selected.3 Z' j$ C3 _ E: E: c" X" q! I+ S
[15] SYNC Selects the synchronization source for the unit. Possible selections are:+ G: o. w& T/ o0 n* Y
INT 48 Internal quartz reference, 48 kHz
. {6 o3 p; T/ f o' m INT 44 Internal quartz reference, 44.1 kHz" G) e( T7 `2 f% p9 W' \
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
0 l, e! z6 o/ I9 q( V AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
1 E2 o& I- |$ C. i: Z0 H/ ` AUTO Selects sources automatically in the sequence AES-WCLK-INT1 j4 |3 }1 x' j9 T% [5 R& M
VAR Indication only, active if the external source frequency deviates from 48 or
2 O6 B7 Z! w3 U: {1 ]/ x2 x 44.1 kHz for more than approx. ±3 %.
/ d- |( A4 ]! q8 z: T$ J Q[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –# V! X4 [2 h. c& ]3 ^- z
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
- O2 o5 F) T! C( {[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
- H' }- ?& f. r* L6 s7 f+ l$ t the danger of overloading the A/D converter with short signal peaks (if
; z% U+ q! g1 i- j# z# U; y active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,8 J: s+ Q, u( R% w/ e
allowing for approx. 6 dB reserve before hard clipping occurs
( X. S! V- N9 j9 s& A! c9 B : m4 M+ }3 ?" Z/ m% d# r; `) G* ^$ F2 R
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