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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 , L6 Q0 r4 l' k$ }! V/ q3 I7 n. [4 \+ w
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英文电子说明书& P( h) e# K2 i8 a* _, l' |
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory1 t" G2 ~/ o+ e: H% G) _( F9 c
default settings. The subsequent settings remain stored in a Flash EPROM
" @ ]2 b U! r5 N after switching the unit off (unit contains no battery)., S1 C& Y* D5 Y9 ^7 [
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position. O% a7 g/ G+ E0 ~- V& S! P
between microphone and line sensitivity setting ranges.2 W* t' v) d; _. M& F" y1 B/ t$ a
Mic: Range –40...+20 dBu) H t* w8 s1 ]2 R- _" d* v t
Line: Range +14 dBu, +24 dBu
?" K' z! r2 A$ W- h& }[3] Fine Gain Potentiometer for fine input sensitivity setting.$ S# t% ?1 _0 W5 ?7 q0 N
Range of additional gain: 0...+15 dB.' V7 `5 Q C u X% O0 o: b+ S
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents2 D3 C. R( p# d4 S2 b, O
the dBu value of an analog input signal which causes a full-scale output of
' H( D# j6 {- A the A/D converter.
& i- o) d4 N4 i* K/ y3 x" S# B Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
' f+ |7 k- Y4 y$ k/ A) z6 y the peak level is therefore +16 dBu. The “Input dBu FS” rotary
, P+ S5 F. `; o+ u( @9 s switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine4 O( d- p2 a. B$ M7 Y
Gain” potentiometer [3] increases the gain by 8 dB.
- B ?5 k% C+ y6 e/ t x1 U# ^[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
6 Q+ V$ C. v; V" W# m[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
5 F# y" C9 x' ^0 Y! Y have more body; percussive instruments are less aggressive.5 C9 R) H+ Y$ O+ S$ z# ^- w
The group delay behaviour due to AC coupling of the stages is different in
; [+ ?. I! z" E& W* _0 e! m( O8 a; A tube amplifiers.8 ?* S0 y$ E8 I
The “Bass Warmth” control allows to select the frequency range0 Y2 i5 G5 M- ^; q9 j# G
(10...200 Hz) within which the effect is active.
$ k4 x& ]; c* t, V: O% G8 ~% {1 K+ h1 ~: ^[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.) }3 M% D2 |7 k; g0 A$ i& H
Valve amps have a characteristic response, mid-frequency harmonic content4 W* U' h& ?( {
is emphasized.% g' c5 C; \5 n
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
. G; N& t8 @# c The harmonics spectrum of a delicately overloaded valve amplifier is completely
: E3 O" L0 H/ i- X& {# n/ {% J" v different from an overloaded transistor stage.: K$ S0 n @/ [+ |9 @, l, k, S
The “Gain” control adjusts a gentle overload while the odd-harmonics content2 y Y+ m4 G+ d- L! N& M+ ]# q
can be adjusted with the “Clip” control.& t" x2 {% \, c" _2 ?8 B
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24/ ~$ Q( l8 x' B% z
dBu FS./ g2 r% z7 I; J" Y; i0 ]* D
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the- ]/ N3 R& l9 x* _$ d% s
desired channel.
% C U4 W. L; ~8 W* f$ D The “VALVE” LED is on when the Valve Dignifier stage is active.
5 n' E. H! n, P; z! ]* d" t6 A$ ~" R[9] INSERT INSERT function.
, f% o0 p7 s9 j3 x, d4 {. x$ e- [) Z First key pressure: INSERT POST VALVE, the Insert Send is tapped after
* T' x+ l/ G2 {' T9 s! E, [2 P the valve stage (display: “INS”); the Insert Return is directly fed to the Line
$ d, _( e* q- |+ E8 B and AES/EBU outputs.4 }; H, Y ^( E0 d5 E1 d
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before/ L* {( s* p2 Q2 a: o- E9 k
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
% p }7 `) U a" w8 ?. o9 b) I. { the valve dignifier stage to the Line and AES/EBU outputs.
* E/ A, ~0 j; G4 K Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
! F5 M3 y) i$ M/ \5 b! F" l stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
6 l& `' l. ~+ h& o receives this signal; display: none). p+ I4 o+ r3 O2 |4 K2 i. I: V
Insert Send and Insert Return are electronically balanced and equipped with
- W# s5 W- q; ]* x% H, d9 L XLR connectors.6 q! `& G# i+ m9 I, J& N
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or* [9 n, K# i! r5 K$ _- F/ ~
ADAT digital interfaces. Each input channel can be switched to one of the
4 h+ r' f4 @: W channels 1...8 of the multichannel interface. If desired, also a mono mix is9 G5 v! U1 j+ T* _8 Z
possible by selecting the same output channel for both input channels.; @, F9 y7 x, V+ Z B
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone& i p8 S! x, H6 Y! a7 w
channel.
5 x/ z( g m6 z7 j6 u Can be operated only if the input gain selector is in Mic position. The6 K2 w$ G2 o. z6 E1 o. _) t: E% N
setting remains stored when switching over to a line gain setting.6 F, f5 Y. B+ `( p p- B, |
[12] Activates the high pass filter on the microphone inputs of the desired channel.' w- a8 y |; g2 i( [
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
. p" U$ j4 F+ }; T: K+ A8 i( C Can be operated only if the input gain selector is in Mic position. The
( u \8 w4 M9 Z1 d setting remains stored when switching over to a line gain setting.+ P- x, p+ T0 A+ B" x$ C' K4 P
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.3 |+ n# o; t! Z( I3 Q; |, t7 w3 Q
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:: n% ]; y5 Y5 Y8 R
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
0 s' V6 ], Q8 J& g" q Noise Shaping (display: “16NS”) can be selected., f3 P2 o c4 E. C& c
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
8 }! a6 @" {, t' C INT 48 Internal quartz reference, 48 kHz4 E- ]. ?* a4 ~$ q- w3 e: v# S L
INT 44 Internal quartz reference, 44.1 kHz
: t7 C* Y0 U$ G; z7 a& I WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
9 |) ~. L9 r& k3 s _6 z1 {9 R AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)% b4 j7 m3 U% T% @# q
AUTO Selects sources automatically in the sequence AES-WCLK-INT
: K& {9 P, |+ U( N; Z$ z4 | VAR Indication only, active if the external source frequency deviates from 48 or
2 h' u2 Z: i! z: [" p. d 44.1 kHz for more than approx. ±3 %.3 A# D2 i- b4 z, m- U7 m+ ~& c
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –- I5 [7 _" l# W/ T2 x2 m
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.: x7 n: ^9 ^4 p
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
+ M: k. `9 W" v: M; i# |% p; @ the danger of overloading the A/D converter with short signal peaks (if
8 L# ?2 W! F/ e; y' ~ active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
2 J4 \1 B( F3 ?) |5 h allowing for approx. 6 dB reserve before hard clipping occurs/ `* c; ]1 t+ Z
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