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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- j0 }' u% F: \( y
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory' Z/ o' g7 A% Z( r! H+ |
default settings. The subsequent settings remain stored in a Flash EPROM
8 B# z0 _; H" g* p after switching the unit off (unit contains no battery).
5 D1 T( S; k$ l[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position, a, l7 R" l) S- F- O( U
between microphone and line sensitivity setting ranges.
' g+ D2 u. R1 U. z Mic: Range –40...+20 dBu/ B9 ?/ J7 F, F% \' W) u
Line: Range +14 dBu, +24 dBu |6 i @- z6 O( k0 D% [
[3] Fine Gain Potentiometer for fine input sensitivity setting.3 @* z5 `% Y# e4 T; Z8 Q8 h
Range of additional gain: 0...+15 dB.
' @. t( o; N& g+ u Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents% ~0 k' `+ P1 U# K) F) j; r! e
the dBu value of an analog input signal which causes a full-scale output of2 f+ [6 V& s4 n: Q4 {
the A/D converter.
8 b: M! ~: C" @( `( g Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
" W) }( T. \5 g( Q& h the peak level is therefore +16 dBu. The “Input dBu FS” rotary" r4 _7 d; C6 [9 _% B1 H
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine) F- e2 K8 P" H. M: y
Gain” potentiometer [3] increases the gain by 8 dB.
. q7 e( v) M6 P* }6 G[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.8 Y6 \5 [" m$ h
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
, g D( S" F @( e8 V; o+ F have more body; percussive instruments are less aggressive., X! }( ?/ F4 f& V5 J# i
The group delay behaviour due to AC coupling of the stages is different in
% a) P% Z* \8 c; Z2 b tube amplifiers.
0 V* @9 B8 u1 o/ d The “Bass Warmth” control allows to select the frequency range
+ d) W! d2 p+ A: @9 A (10...200 Hz) within which the effect is active.0 T, e; @, A! B
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.( p9 E6 t7 F, v3 ~! L
Valve amps have a characteristic response, mid-frequency harmonic content
: Z4 {) l' S6 e- |+ g% K is emphasized.
- d, z) t$ d& ^ ^! q# [/ I$ J[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
) L$ N+ D' ^' u# ?3 W- W6 z The harmonics spectrum of a delicately overloaded valve amplifier is completely
# N9 `0 V6 r$ ^6 R% d. y different from an overloaded transistor stage.# @& A/ |, A+ Z+ j+ B7 v o0 y
The “Gain” control adjusts a gentle overload while the odd-harmonics content
# v: z& G5 ^3 H can be adjusted with the “Clip” control./ Y* |# d2 U" v/ h$ X" }
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...249 d" y* b; M- k, f3 e
dBu FS." M* B# K' }3 @0 ]
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
6 f' O, N2 b: } c& H9 d8 C$ { desired channel.
$ |2 Y$ m3 { I/ O The “VALVE” LED is on when the Valve Dignifier stage is active.
! w( S( \8 C& T! R. U# A' r[9] INSERT INSERT function.
5 M# k! w1 m! \% @ First key pressure: INSERT POST VALVE, the Insert Send is tapped after' o+ [9 F4 Q" Y" \9 k1 {% e
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
/ n6 V! D$ N/ J' |1 V and AES/EBU outputs.
1 Q; Y: U8 m+ e9 m1 Y* P; v Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
) ]( q; _5 Z9 p; f& K& [ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via( I' `; H; `1 q' P! q
the valve dignifier stage to the Line and AES/EBU outputs.& }9 G! ^7 u H; | I; o# C+ d
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier. `. r; Y6 a# v; |! f/ n1 Z2 m- }
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output/ Q, F8 L5 T* w; S' s. `0 ~; F, @7 |
receives this signal; display: none).; O; a. R! [3 u
Insert Send and Insert Return are electronically balanced and equipped with
/ D5 B/ b& ?* ` XLR connectors.+ E( {7 t- Y9 [: h% @1 N7 [* Q& [- l
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
" f8 A% Q: [2 N' c( q ADAT digital interfaces. Each input channel can be switched to one of the5 x* {( s- Y u* [6 k, L
channels 1...8 of the multichannel interface. If desired, also a mono mix is3 n2 Y: e2 P- _4 `, c
possible by selecting the same output channel for both input channels.- q) D$ K) |7 [) k6 r
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone/ \) t( O# `, d) V9 S" `
channel.; t' g$ W. n& _( u
Can be operated only if the input gain selector is in Mic position. The6 C, w; R* `% S2 V- l! o/ Q- S
setting remains stored when switching over to a line gain setting.
+ ~, l3 G. m; f) w- B2 ~6 L) t; J[12] Activates the high pass filter on the microphone inputs of the desired channel.
* ]; Z' W1 u- q. ~! P W% W: X8 a Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.. R- n# l) A1 Q: @
Can be operated only if the input gain selector is in Mic position. The
* N4 O. Y1 j; c6 U: t setting remains stored when switching over to a line gain setting.) b% c3 n+ R7 M
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
9 |6 v- @) m; j V[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:3 C" p3 ?+ V6 O" A& [( _! Z) Q
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with8 }: P3 a& Q; f7 x( E
Noise Shaping (display: “16NS”) can be selected.
3 o8 Z0 F. L1 N0 y) @ e3 j[15] SYNC Selects the synchronization source for the unit. Possible selections are:' P' F- [& ^ \7 y
INT 48 Internal quartz reference, 48 kHz
7 L: E& ~/ i t$ X4 b. z, ]" x INT 44 Internal quartz reference, 44.1 kHz5 o# H) L( b W
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
! U6 D$ L! O* i/ {7 g! ~6 H( a- G AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
% ` D4 M/ O+ `/ {9 J: O C AUTO Selects sources automatically in the sequence AES-WCLK-INT5 R. \2 e# l- H. u' b- L
VAR Indication only, active if the external source frequency deviates from 48 or. I% Q+ g' z& P+ A3 T
44.1 kHz for more than approx. ±3 %.
2 Y ]! P7 J! Q P: D1 _" S. o[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
% M* Q! I+ G0 J$ t either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
2 B1 Z5 a# `- `( j2 W# b[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
& z* |, U2 Z+ j3 k; f3 A the danger of overloading the A/D converter with short signal peaks (if# l D$ g0 s% M7 Y) W
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,1 |$ m" S$ Y9 r* ^) z
allowing for approx. 6 dB reserve before hard clipping occurs
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