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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 ' c [) G1 c- S+ W' a
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英文电子说明书; {$ v9 U0 R5 R+ B. R
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory3 c, S' F7 E: p7 O/ D. Y
default settings. The subsequent settings remain stored in a Flash EPROM: V* `3 ?4 h# ?* l$ K/ ^
after switching the unit off (unit contains no battery).
- y: b' g3 \& L; Q% E0 o4 l8 }[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
& C q/ P; \/ S" s E between microphone and line sensitivity setting ranges. q( F4 D# |4 `% p. {0 {
Mic: Range –40...+20 dBu6 Z2 o# ?, e2 c0 G' J0 M
Line: Range +14 dBu, +24 dBu+ v9 B+ P* A8 _' O- U, ]; B7 N
[3] Fine Gain Potentiometer for fine input sensitivity setting.
m; g9 l6 m% L( L8 u Range of additional gain: 0...+15 dB.
' d' [( p5 R: p0 d" ] Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
) r5 I$ C9 M3 U' o the dBu value of an analog input signal which causes a full-scale output of" W, [: H2 P$ s Y( B3 D. V( _
the A/D converter.. d& o; a, U6 T0 W) m- X
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
! ]* r. a+ `: i+ \9 J- ` the peak level is therefore +16 dBu. The “Input dBu FS” rotary
: ~ F" \7 t% p7 ]4 E2 h' C# m switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
5 T# {( ~; U) {: d9 n% K- ] Gain” potentiometer [3] increases the gain by 8 dB.( }& Y! B/ N) U
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
: d" ^- h# G7 P9 N$ K[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals4 d9 u0 e( U3 U$ u6 `( e6 u
have more body; percussive instruments are less aggressive.
9 }& I e1 ~% c3 t# k" K5 q: \ The group delay behaviour due to AC coupling of the stages is different in
0 y' m" I% c. x& n4 l! g* r- t tube amplifiers.
$ U# A/ o& K, |9 D) c The “Bass Warmth” control allows to select the frequency range
0 _* n# W8 T: q v5 J (10...200 Hz) within which the effect is active.9 \; U; x3 S' Z# A" ^7 Q4 h
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
' t9 G- B- x# F Valve amps have a characteristic response, mid-frequency harmonic content
( O# z5 N; W* u6 x# P! M is emphasized.
5 ?* Q' N% @+ b7 T3 E% e[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.+ n9 o ^) n+ G, J* ~
The harmonics spectrum of a delicately overloaded valve amplifier is completely
+ N0 W1 I& M7 ~ different from an overloaded transistor stage.
" O* D+ a2 G R0 N# A The “Gain” control adjusts a gentle overload while the odd-harmonics content" J/ X, c1 V4 W7 i1 I8 C
can be adjusted with the “Clip” control.3 E, r! s7 Q7 X1 }8 O
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24* c7 i: R; m4 E8 H& ~" t0 E0 ?$ u
dBu FS." S% J, y7 W6 X6 C7 i
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the* L; T2 q' q7 d6 Z# O1 ?: g$ _* ^
desired channel.
1 R; I9 N" q5 l; A The “VALVE” LED is on when the Valve Dignifier stage is active.
+ s; v8 r4 j3 t! k; m[9] INSERT INSERT function./ L8 B2 Q1 m2 y
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
* s* Z3 p' {0 ~. E( y! `6 b4 Z the valve stage (display: “INS”); the Insert Return is directly fed to the Line9 q0 Q0 B8 c$ v" j4 E0 ?
and AES/EBU outputs.
% g6 w# X3 U8 _" G4 r, k; Z Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
! ^5 A5 `# G0 B2 ?: b! V$ i the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
7 {- S: j9 l3 W/ v- } the valve dignifier stage to the Line and AES/EBU outputs.
, |) K( f* E0 ~& B Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
_+ d* D6 S7 T* M/ B& X5 S [ stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
$ N# {' s. F' e' K: \ receives this signal; display: none).
: `$ @5 W0 a) J2 j0 S Insert Send and Insert Return are electronically balanced and equipped with
4 s$ s2 o, {, E XLR connectors., N& f! v L* @7 u+ [
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
! T/ T8 `" |+ H) ]* i5 ` I% @ ADAT digital interfaces. Each input channel can be switched to one of the8 p" y1 E+ ^/ z) P9 h1 r1 v+ h
channels 1...8 of the multichannel interface. If desired, also a mono mix is
. M1 M: u# @/ X' A( } possible by selecting the same output channel for both input channels.
5 \. f- X0 { ]- K0 p. ~; \[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone- N8 H& V9 V- e
channel.
7 g8 R2 A, f) B7 q6 }( ? Can be operated only if the input gain selector is in Mic position. The
( S0 I- @: c1 d j$ C8 e! ? setting remains stored when switching over to a line gain setting.; o) |4 @- C8 V% [. ^
[12] Activates the high pass filter on the microphone inputs of the desired channel.. Z+ ?4 q5 p# i$ ^' u, z
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
) l% H. D2 w3 y+ J* J Can be operated only if the input gain selector is in Mic position. The* _8 G: ~6 z v. l
setting remains stored when switching over to a line gain setting.' L# J& M. T3 E# R2 |: G- y
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
; O8 D. q. G }1 H' M( C/ W[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:) g2 k& G6 d( h' J; z, @. T5 d. e( {
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with3 T& Q+ |7 J: ~5 z. K. Z! a: ^
Noise Shaping (display: “16NS”) can be selected.
' C' F& S) h/ S n[15] SYNC Selects the synchronization source for the unit. Possible selections are:2 {1 `8 a" z& _* I8 I$ F# P
INT 48 Internal quartz reference, 48 kHz e% [1 V$ D. ]/ x
INT 44 Internal quartz reference, 44.1 kHz
' `5 N. c4 j& d1 U! b WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)" s9 n# {7 e( q) T0 I7 U
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
: ^/ s# Y: h. c1 \ AUTO Selects sources automatically in the sequence AES-WCLK-INT
5 ~9 z& a& D: Y VAR Indication only, active if the external source frequency deviates from 48 or
4 ^0 |/ g6 D5 S5 a& d1 @/ ?( k0 m 44.1 kHz for more than approx. ±3 %.
' Z6 h# w, e4 H0 a h& O2 \& z[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
: [, V7 r2 e0 l7 W A9 z& X. @ either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.5 B. Z% b& |# v' _+ `8 j
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce0 N$ B8 h$ q+ F5 F/ s4 K- C
the danger of overloading the A/D converter with short signal peaks (if
$ \5 n H( n1 b. m/ ^$ w5 \. r0 r$ G active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
5 d! D, c7 `! ~: [+ {6 I: s* n, H allowing for approx. 6 dB reserve before hard clipping occurs" |; Y v0 d2 h/ w. x( [) K
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