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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 * |' K: I0 \8 V# z' E
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& R" ]( m/ ]2 @英文电子说明书
$ k4 E0 i7 d D6 ^% L/ G& e- C; A% G[1] POWER Switches the unit on or off. The unit is ready to operate with the factory8 s& c" Y/ J4 G- l4 Y
default settings. The subsequent settings remain stored in a Flash EPROM" C3 \: Z# m- M$ [% ?% ?: ]/ o
after switching the unit off (unit contains no battery).) Y5 w2 M% Y- k7 ?
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position# [! h i7 o2 J' t1 t; E
between microphone and line sensitivity setting ranges.9 `1 r1 d9 L' k' _6 k" x
Mic: Range –40...+20 dBu: o' c( g1 d* Q6 K/ l3 `' o! h3 y2 ^+ Q
Line: Range +14 dBu, +24 dBu
5 w9 v3 H3 r% i[3] Fine Gain Potentiometer for fine input sensitivity setting.
, i4 ^/ l7 f4 S' A; } Range of additional gain: 0...+15 dB.' C& @# O' o# L# @8 b3 e: v7 C
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
" a5 ]6 R- \. W' H$ [( w k the dBu value of an analog input signal which causes a full-scale output of _/ d# n' M9 X- a2 z D+ ^; }
the A/D converter.
! P) T; Z2 _' k" `$ z3 C* g7 H) |3 T Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
: Z, M u. d& D T the peak level is therefore +16 dBu. The “Input dBu FS” rotary
4 } a* G5 h0 a4 | switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
! {4 b# N- K5 r7 t Gain” potentiometer [3] increases the gain by 8 dB.
- Z. T7 t- V: s1 D[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
* y- m* s! x, E4 A, U[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals6 t' X0 b0 u( \. P" u2 {+ _$ N7 _
have more body; percussive instruments are less aggressive.
) P/ s- I' W9 E The group delay behaviour due to AC coupling of the stages is different in
6 X# P- m7 Q8 [6 z/ j tube amplifiers.
/ N. W& _5 Y7 T% M4 t9 Z# {- {+ z The “Bass Warmth” control allows to select the frequency range
& {: F+ M( `' d8 O( `9 k (10...200 Hz) within which the effect is active.
5 I* s ~9 i! Y. B& K$ W% ~( j[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.9 q0 p; ]; W8 |7 O* B& F2 B, ]
Valve amps have a characteristic response, mid-frequency harmonic content
/ H; k i3 ?& y- n& l8 I6 c& I6 Q is emphasized.
' }! h0 [! {! u8 m, ~[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
2 F( R+ C) r, _* y The harmonics spectrum of a delicately overloaded valve amplifier is completely; e5 W* I1 q. v
different from an overloaded transistor stage.# C6 I. d; L2 ^1 u8 d) N& ?+ ^
The “Gain” control adjusts a gentle overload while the odd-harmonics content
: G! r3 E, I8 V( G" A can be adjusted with the “Clip” control. F/ @8 \& W; P( T$ k* r" ^
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24* j/ n3 _5 L. F h' @" [1 ^
dBu FS.6 U# J: l! G9 z% e" |
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
8 P8 Z7 }6 R- r/ L9 C- G1 ~) G desired channel.
7 `' S7 N0 _; K& d9 }7 |7 B3 d The “VALVE” LED is on when the Valve Dignifier stage is active.
! _4 ]1 H* ^- W; q[9] INSERT INSERT function.
~" N3 D6 S- V2 | d First key pressure: INSERT POST VALVE, the Insert Send is tapped after& ~& g1 R, [* G8 ^
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
/ ^ s9 `/ i/ x/ O, h$ { and AES/EBU outputs.8 o) r$ y6 L* o" E6 a; [4 R4 Q
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before& `& ~% e! j7 B0 C
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
^% k9 n9 n0 C1 U$ l0 _8 { the valve dignifier stage to the Line and AES/EBU outputs.8 h x4 N/ G- a9 p% {
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier$ a& \8 H* t: x- B( T% e. |
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
3 r' p! m+ H; [ receives this signal; display: none).+ Y& e9 ^7 k' p% N8 Q
Insert Send and Insert Return are electronically balanced and equipped with: C- N, \ b# F% \
XLR connectors.6 c' y o. ]8 F& ]0 X
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or! }* f9 F8 v! f
ADAT digital interfaces. Each input channel can be switched to one of the
9 t' E H; J9 O% j+ d1 \. Y$ a6 w channels 1...8 of the multichannel interface. If desired, also a mono mix is
' @5 f m3 s& Q: q6 S. x possible by selecting the same output channel for both input channels.
7 Z. M3 c! M% [) b[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone0 L |! ]& f( Q
channel." ]: y1 O i3 w! _& d9 N2 d9 U
Can be operated only if the input gain selector is in Mic position. The6 o. T2 L8 Z- F
setting remains stored when switching over to a line gain setting.0 I3 U" I' o) E# P: S' S, J+ U
[12] Activates the high pass filter on the microphone inputs of the desired channel.
3 _: t! f) R7 p! U9 |3 \* s Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.4 v9 p: V! b D' N+ A& ]
Can be operated only if the input gain selector is in Mic position. The9 ]! w8 u J$ }
setting remains stored when switching over to a line gain setting.. _) f O: r9 Q$ q7 b
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.5 q% u+ T8 K: _1 Q1 s$ l6 d/ }
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
+ H2 u. L9 ^7 P/ |, C) @& q “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with* n# F7 h- \& T9 b, b
Noise Shaping (display: “16NS”) can be selected.
" a' v6 a& B4 w. q# s; m4 V[15] SYNC Selects the synchronization source for the unit. Possible selections are:: Q* j- S0 s8 `& N
INT 48 Internal quartz reference, 48 kHz
5 u2 u l- r7 Z" w. g% R INT 44 Internal quartz reference, 44.1 kHz8 G j8 l8 W& {9 k- p9 t: X- ~2 v P
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)6 p9 }, a* c" ~+ c$ x) q
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
: b4 c1 N9 ^& w! p- W, N" _# b AUTO Selects sources automatically in the sequence AES-WCLK-INT
7 I8 W( R9 I0 X VAR Indication only, active if the external source frequency deviates from 48 or
3 M! F! o' [0 E/ h5 ^4 t$ M 44.1 kHz for more than approx. ±3 %.
* }: z0 S( s! ][16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –. X6 I! Q& R% p; \2 y; \
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.4 \0 A0 W1 }3 u1 {7 U* m5 M
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce/ F0 Z/ ^- q) E4 I/ |+ I$ m
the danger of overloading the A/D converter with short signal peaks (if; y* {9 z2 {% _" }1 Q
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
4 W# n2 M) w$ w" u allowing for approx. 6 dB reserve before hard clipping occurs! P' u+ H. l1 N8 f- h. K
, I, C+ Q3 m8 S3 Y; O 0 B4 X0 {8 v/ e+ z# |
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