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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
! E1 U* r7 F( h* {9 E# a3 p( k1 K( L$ L[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
) U" l* ]6 |! S8 v default settings. The subsequent settings remain stored in a Flash EPROM" v) e, c$ E% f9 u, i+ y% S# T5 s
after switching the unit off (unit contains no battery).( W6 r% k* B2 X- v- Z2 ]! t
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position; V8 l6 V, P+ z
between microphone and line sensitivity setting ranges.& s% Z: Q, T, d# B5 Q+ C& X
Mic: Range –40...+20 dBu$ H0 L. h4 |' g' p
Line: Range +14 dBu, +24 dBu! [" E! y: {/ a8 i0 R8 p
[3] Fine Gain Potentiometer for fine input sensitivity setting./ j2 `" W d) T" S- c
Range of additional gain: 0...+15 dB.
2 ]8 R- B3 n. H" V$ u Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
* I; S/ h0 D* o: P# P$ ?$ a the dBu value of an analog input signal which causes a full-scale output of7 d( V) |$ X! o8 _
the A/D converter.
, \" x. j9 G5 s' K% O% A Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
: Y5 {- `+ U, j1 T" K the peak level is therefore +16 dBu. The “Input dBu FS” rotary
# @9 j S) V+ m! y% l8 [; u switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine6 l6 j% F$ t- }* S; Y* y, [1 X" k2 X6 ]( n
Gain” potentiometer [3] increases the gain by 8 dB.+ \+ J8 f- S8 s
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.. v! l% e8 f/ {+ j1 P
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals6 V$ u/ Y/ i4 T' `* l$ L
have more body; percussive instruments are less aggressive.# A' y/ N" l$ j4 W2 ]+ p; V$ d9 k
The group delay behaviour due to AC coupling of the stages is different in, E6 q0 A3 H1 ~8 ^. E
tube amplifiers.
+ Y7 I$ a: u4 y" U, W# n2 a The “Bass Warmth” control allows to select the frequency range
0 s$ M4 ^! x) o% l9 }* W4 s (10...200 Hz) within which the effect is active.
9 v' H4 Z& X& H6 }2 v2 P3 @3 ?[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
( g3 a- K+ G- Z( C' u- m Valve amps have a characteristic response, mid-frequency harmonic content& S; `$ J* K& R8 [+ H
is emphasized.
+ t9 b# _9 b" ~+ ~) ` i q" k5 P[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.! V' w' l5 A7 b G& i* s
The harmonics spectrum of a delicately overloaded valve amplifier is completely
9 N& D9 n( u" ~3 P1 `/ y different from an overloaded transistor stage.
( u m" I% O8 S4 h! S% s2 y3 G The “Gain” control adjusts a gentle overload while the odd-harmonics content
" c, L4 |4 ?+ P4 k* A9 z can be adjusted with the “Clip” control.
3 z* k' T' q- |! z" R[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24; Y+ ?% }! H2 B% R( k$ n
dBu FS.
0 \, f4 l# ^; J# y) F% ][8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the) b. v; C# ?- u4 B: w
desired channel.0 m j4 ~8 g! ~$ L
The “VALVE” LED is on when the Valve Dignifier stage is active.! W4 i5 }- W8 G O6 f" V3 x7 l
[9] INSERT INSERT function.
. L- f' d) B1 P ]1 l3 a1 A7 V First key pressure: INSERT POST VALVE, the Insert Send is tapped after
% b- A. L9 ~" H" L9 p) @1 g$ I the valve stage (display: “INS”); the Insert Return is directly fed to the Line4 g7 O1 W% `! a/ U1 S
and AES/EBU outputs.9 c- ~& T3 ^" V1 H9 {3 b" c( P- e
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
& C" K, l+ x, c! S% }( j5 h5 U3 `( W the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
% m2 l1 g W- H' @% O the valve dignifier stage to the Line and AES/EBU outputs.9 Y, j4 K' N5 K; E+ V% \/ f+ c: w
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier, r6 w9 w) d' I- X
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output9 s6 s( P, S/ Y" E) P3 M
receives this signal; display: none).
0 X( @( ^: G4 x& I6 k Insert Send and Insert Return are electronically balanced and equipped with2 v5 c' W) G X5 l3 {
XLR connectors.
' d) A& I4 y7 \+ A; U[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or3 H! x; K4 b I5 J
ADAT digital interfaces. Each input channel can be switched to one of the- o% c- F/ z/ H8 X
channels 1...8 of the multichannel interface. If desired, also a mono mix is
- ?# R5 ], N' M( j! M8 a7 [! @ possible by selecting the same output channel for both input channels.
v9 p' U% d6 m[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, r6 W# W9 P8 W6 \2 B: K* q channel.* u, e' t4 s2 x4 T3 e# W' y5 F8 `5 K7 H
Can be operated only if the input gain selector is in Mic position. The
& _2 c, f7 n7 O D+ j+ Q setting remains stored when switching over to a line gain setting. T( R9 }( u( U8 c' e
[12] Activates the high pass filter on the microphone inputs of the desired channel.
! g" F) F2 D% u4 _& h Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.; b: q% ^ ?( j5 {" {. Z/ h
Can be operated only if the input gain selector is in Mic position. The
* J+ O- _5 w" y8 s; H6 m setting remains stored when switching over to a line gain setting./ m$ X3 k8 k, T) U- Q
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
* J4 I$ x: z0 t: C[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:. ~0 }# d$ a9 ]+ ]! P
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
8 H/ U, \, g7 p7 S/ E- ]+ B4 I; E/ O Noise Shaping (display: “16NS”) can be selected.5 b' q r& p3 v5 V2 A: i
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
; \0 _$ M' [! {5 I, P6 x; w6 P INT 48 Internal quartz reference, 48 kHz
" w7 M2 W: I& v) F INT 44 Internal quartz reference, 44.1 kHz; D) s: s: h- Q
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)7 l5 E9 {7 l2 m" ?& P h9 ]2 d
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)- I$ l' w% _ \, O5 v% y, h6 B! b
AUTO Selects sources automatically in the sequence AES-WCLK-INT! c$ }3 w9 V3 f/ e V
VAR Indication only, active if the external source frequency deviates from 48 or
. t# M" L5 R# a7 `4 d# |) A 44.1 kHz for more than approx. ±3 %.5 \/ W. u1 ?2 D* K
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –: Q f7 i1 Z3 M: ?
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.: y5 ], Q" u' I
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce U# d/ u. c; @6 a2 `8 D) h0 k
the danger of overloading the A/D converter with short signal peaks (if
9 E- s% M8 l% m! o/ q active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,3 M# w4 u( c$ B7 d0 D) n
allowing for approx. 6 dB reserve before hard clipping occurs
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