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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
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英文电子说明书" } D# A$ J" X4 S( N3 o1 b/ l
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory g( z9 }$ F3 p6 O2 t. Y: c
default settings. The subsequent settings remain stored in a Flash EPROM; ^3 t o% Y' k& N
after switching the unit off (unit contains no battery).5 x. C4 _3 O, H& v) _; h& ^
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
+ q8 [/ w# I( Z8 N& j$ z0 _ between microphone and line sensitivity setting ranges.+ m5 E ^4 A0 r0 G) o+ w
Mic: Range –40...+20 dBu
" E2 ]( r5 q2 O5 Z" w' g* y Line: Range +14 dBu, +24 dBu( m5 C+ ]4 m' S/ W5 P8 i: j# g
[3] Fine Gain Potentiometer for fine input sensitivity setting.9 [3 f) u& T4 \) R% H. ^
Range of additional gain: 0...+15 dB.- D( y7 T# K1 `' g) I4 q
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents1 Q+ ~1 K T& ]6 v9 T
the dBu value of an analog input signal which causes a full-scale output of
7 |* ]4 c) N. O1 u6 e* n/ i7 ~ the A/D converter.4 ^% p4 f8 I+ I4 X' O; }2 t; F
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;6 E9 U. Z+ {& o
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
/ t$ I! M5 @0 V* s: i switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
4 D& e5 N' R+ E& s# f3 U Gain” potentiometer [3] increases the gain by 8 dB.. O2 a0 d( e7 G! I+ U2 H7 G, O
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
+ i$ k" m; p" S8 E# M[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
* x* D5 C# i) d* t* w have more body; percussive instruments are less aggressive.
) @2 G* M$ f. e* F! k5 y5 |. {3 K The group delay behaviour due to AC coupling of the stages is different in" z3 V- p) K; ^7 o$ Z* j
tube amplifiers.7 f9 h# m7 U2 A, l% v2 G( s
The “Bass Warmth” control allows to select the frequency range
7 [8 k9 _9 Z) F& w9 x (10...200 Hz) within which the effect is active.
: ~; {: [4 ?! h; o+ l) E6 M[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.& a; B3 d# B7 Q! P2 ^
Valve amps have a characteristic response, mid-frequency harmonic content3 b- C. l! E- |; d. i( M% Q" K
is emphasized.. g9 S& I3 P( Q
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
* I5 _5 N h, `( I6 r+ |: I The harmonics spectrum of a delicately overloaded valve amplifier is completely7 E% X7 R( b3 f/ e; U; {
different from an overloaded transistor stage.
) j4 ?, B$ C5 z6 \3 X" x1 E6 ^ The “Gain” control adjusts a gentle overload while the odd-harmonics content4 C, L; }0 M1 M4 N n1 O5 F. M
can be adjusted with the “Clip” control.1 J; ?; D* F$ W* p7 O' n; R
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
( U& y" E9 a. h& ? dBu FS.
5 H, V F8 Y9 }+ f[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the+ X+ H" c* T4 [2 N; _( I5 l/ X
desired channel.
3 D1 |, s$ C' u3 y; E# |: ` The “VALVE” LED is on when the Valve Dignifier stage is active.5 {8 f9 T) v' E; h& I
[9] INSERT INSERT function.4 F4 S8 W& k9 }. j6 [
First key pressure: INSERT POST VALVE, the Insert Send is tapped after# L9 G4 S i1 A+ M
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
, x. I$ {2 B+ t4 J$ m; n( | and AES/EBU outputs.
, N8 L5 l! E# _ Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before# Y# O' |1 ^& ?/ v, D! f
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via4 J& d. q6 f1 g. B. P
the valve dignifier stage to the Line and AES/EBU outputs.
( | \9 w4 k$ @$ ^ V) R9 Q Third pressure: INSERT OFF, the input signal is fed via the valve dignifier1 Z( f( b3 G" W9 O3 @7 a5 K5 F
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output( y$ v3 @( D8 p v9 a
receives this signal; display: none).% S4 H J+ [# q e
Insert Send and Insert Return are electronically balanced and equipped with
* j/ ^+ w w; I XLR connectors.
- e) b* g. ^ o) W9 _9 W[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or$ C+ q0 C( i/ j/ I* n) L( f
ADAT digital interfaces. Each input channel can be switched to one of the+ K$ [# J6 m6 q! A+ @- M: ?# Q' P
channels 1...8 of the multichannel interface. If desired, also a mono mix is
8 h9 x7 h8 Z% T possible by selecting the same output channel for both input channels.! ? F' ?, w8 m9 u2 P8 B3 b( o5 E
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone, U4 Q9 E. [8 _ F1 E4 v$ d5 u; C
channel.
% |0 q+ }4 {0 X( M$ }, E8 \1 n8 j Can be operated only if the input gain selector is in Mic position. The
3 l2 A/ O- X: v; Q( l' W' X/ b% ^0 D0 ` setting remains stored when switching over to a line gain setting.) e4 Y. i9 f v% h
[12] Activates the high pass filter on the microphone inputs of the desired channel.
% O1 ?" B3 ]+ r$ \8 r- C8 Q Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
$ r5 P5 }: t, \! ?; \7 j Can be operated only if the input gain selector is in Mic position. The1 j. `8 |1 w/ X+ ?$ W; g) ]
setting remains stored when switching over to a line gain setting.) v: j" g5 J6 r$ N7 z* {
[13] Ø Toggle key to activate the phase reverse switch of the desired channel./ G* v F( `' T& Y6 Q; G6 f, P& \
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:. b3 V7 z/ f6 s% E/ L+ a" Z3 z
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with% L7 {8 G0 l S# B+ W' j
Noise Shaping (display: “16NS”) can be selected.2 h' ?: S. g+ q8 o
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
) F" L4 o- }. T INT 48 Internal quartz reference, 48 kHz( U$ @& c4 C9 X/ A$ S- V+ X
INT 44 Internal quartz reference, 44.1 kHz6 j# c0 p5 [3 Z& \& w+ W
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
8 |: D4 h* A; A AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)9 j1 G, S- i! H0 y
AUTO Selects sources automatically in the sequence AES-WCLK-INT
8 c6 w% y* ^8 V( f VAR Indication only, active if the external source frequency deviates from 48 or$ F5 E% ?# m q2 M7 _; n+ P: L
44.1 kHz for more than approx. ±3 %.+ w: B# X( G- }, _
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –" T t& _' h2 v- [* \
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
1 k5 Q, w5 A! x- J7 P6 D) U9 V[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce* ~+ n% N- U# B. Y
the danger of overloading the A/D converter with short signal peaks (if- Z3 a7 @7 q% R$ G+ q, c1 U8 l, r$ r
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
$ {& Q& E$ D0 M, H' H9 \. z$ Y allowing for approx. 6 dB reserve before hard clipping occurs
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