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发表于 2012-5-20 00:04:04
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本帖最后由 dan3963101 于 2012-5-20 00:12 编辑 # s2 m# z4 J5 O( N- v# z+ J
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英文电子说明书
% ^" t6 |/ g, v0 ~* N8 M* T[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
. E+ i+ Y3 g9 U/ A+ l default settings. The subsequent settings remain stored in a Flash EPROM
9 U t2 c0 }0 v5 {9 D1 i after switching the unit off (unit contains no battery).( v% X1 V7 d7 j& L. [4 G
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
) Y. U. n" l' u, `" z2 B, f7 _ between microphone and line sensitivity setting ranges.- U" z s2 F: i& J+ V
Mic: Range –40...+20 dBu$ j) D6 z) R J, N! n! I5 U/ ^
Line: Range +14 dBu, +24 dBu
4 R; W9 Y% _6 R# Z/ v5 g# R[3] Fine Gain Potentiometer for fine input sensitivity setting.- u# A8 k( j- e: [/ ^1 u- ^" \
Range of additional gain: 0...+15 dB.
$ l! H, x. H6 ]# x* Q Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents, w/ N, Y k7 Q! g3 }. u
the dBu value of an analog input signal which causes a full-scale output of
/ W. O2 i$ c* [$ Y$ l5 H3 b. E the A/D converter.- G# K( Y% Q& V3 O, w. x
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;8 I5 f! C% {/ R/ Y, G8 r
the peak level is therefore +16 dBu. The “Input dBu FS” rotary+ m. ?# m8 Y. H; A
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine' o3 L, ? J8 C1 K) g
Gain” potentiometer [3] increases the gain by 8 dB.4 {5 _+ f. s2 |. [$ c1 w& B
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.5 b0 E- T5 M$ s) i4 {
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals' s- T# S3 h: p8 M5 c' l
have more body; percussive instruments are less aggressive.
0 W5 N8 ~4 [# l. | The group delay behaviour due to AC coupling of the stages is different in- Q+ ^# _$ |; s w# b/ `2 ?2 L
tube amplifiers.) A: J; V0 m9 { l# _- |
The “Bass Warmth” control allows to select the frequency range
3 _' p7 l5 K* p# ~2 P& e* O (10...200 Hz) within which the effect is active.
9 ^$ O/ q( _/ i: F+ O. O[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.2 H8 f7 d9 x1 \9 i
Valve amps have a characteristic response, mid-frequency harmonic content. B- }0 I8 N& i6 z5 f9 a, f
is emphasized.
+ e/ S) J% _' T2 n, V[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
' d% m# \% v! f: A* d3 y% {6 p The harmonics spectrum of a delicately overloaded valve amplifier is completely$ F7 _( r( p6 p; m: I; x9 L- f
different from an overloaded transistor stage.- ]$ W" N5 Z, K6 @
The “Gain” control adjusts a gentle overload while the odd-harmonics content
3 P5 A4 Z+ D8 t: m" i: L6 ^2 G. S can be adjusted with the “Clip” control.
" E3 Q' x1 z% a T7 L[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
. y$ u* k& k5 o" l( t dBu FS.8 w- ]! `* w. k7 l- k+ K ?
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the k& ~9 ^2 B( _% c6 @( l5 c- `8 I/ `% M
desired channel.8 o" O, [. T3 c
The “VALVE” LED is on when the Valve Dignifier stage is active.. u/ _. y8 A: V; c* D- m) U$ y+ `
[9] INSERT INSERT function.
6 U/ r( ^. ~* w; F. t0 Z% y First key pressure: INSERT POST VALVE, the Insert Send is tapped after6 M+ ~* @, E S# s
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
4 ]1 P. i9 D% c and AES/EBU outputs.
8 D8 l6 |# j* O9 | Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
0 r- }9 ^, z3 @) G* K0 c, x the valve stage (display: “INS” and “PRE”); the Insert Return is fed via2 c+ T o, r' E$ n: G. i
the valve dignifier stage to the Line and AES/EBU outputs.( h- u% `6 e: Z0 N' I- J
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
4 @' p% p/ J5 P2 _" R9 T2 G5 \ stage (if active) to the Line and AES/EBU outputs (also the Insert Send output$ o' {- ?( |5 t( q
receives this signal; display: none).
! \9 ^- w0 Z3 x: S" o1 J Insert Send and Insert Return are electronically balanced and equipped with
! K$ k+ h. G0 D* F/ h XLR connectors.
' B; X0 ^/ S* M5 P9 h1 x[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
_; B5 u" C2 M! c ADAT digital interfaces. Each input channel can be switched to one of the, I2 z8 P& H, R8 a: T' t0 p
channels 1...8 of the multichannel interface. If desired, also a mono mix is! i* k9 s& N; K
possible by selecting the same output channel for both input channels." {: j7 h$ q5 i4 d" o) [
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone% Y! T. H4 y# q1 L
channel.
! z7 n: ?0 D2 N" Z* s Can be operated only if the input gain selector is in Mic position. The' D3 }, J1 u8 T" B
setting remains stored when switching over to a line gain setting.: t2 k% p" O* W- [+ b" Y5 ^
[12] Activates the high pass filter on the microphone inputs of the desired channel.. n2 W; c3 x- V5 L
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.0 A( `5 H8 _; N5 b3 ^
Can be operated only if the input gain selector is in Mic position. The
# @% B3 N/ K: I8 ~3 x5 m setting remains stored when switching over to a line gain setting.) J, {/ r) y4 N5 ?' Z X( \
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
. _/ b* L* t+ C- E- p ~[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
Q3 [4 v) q% I “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
A2 \& ], k$ R/ Y3 W1 Z Noise Shaping (display: “16NS”) can be selected.
' f7 q" |3 d3 d4 S& W[15] SYNC Selects the synchronization source for the unit. Possible selections are:% h5 |$ c+ H. [7 J0 z' x. c* b
INT 48 Internal quartz reference, 48 kHz
. `8 I3 T; |6 N9 k; H INT 44 Internal quartz reference, 44.1 kHz
# h% \( H/ t9 J$ B$ q9 k WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)7 F7 D6 B- @& p, B- f
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( m! ?7 M& j0 {7 W1 k& b! v3 ^+ c1 L: P
AUTO Selects sources automatically in the sequence AES-WCLK-INT" j. D" T' M9 e7 Y: v) M! C1 |
VAR Indication only, active if the external source frequency deviates from 48 or
% ?+ Y# \: H4 J 44.1 kHz for more than approx. ±3 %.
4 X' b9 a' t1 t! R' m' N4 [7 q[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
0 z1 R) D; X% C% @. W either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
0 j, h, O2 X( v& h1 G9 G. {[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
* {0 J8 \8 u( \& k$ F* R the danger of overloading the A/D converter with short signal peaks (if
( } M- k! J/ q3 d1 P* ~9 Z active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,* t0 j9 X. u Z7 k3 \. ^5 c( | d
allowing for approx. 6 dB reserve before hard clipping occurs3 L5 m$ n* g9 h8 L. |0 i/ d' _
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