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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8 Z# m1 m: f$ y
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory/ x. q! [% K) ?' w) F1 k( B$ O7 E8 s
default settings. The subsequent settings remain stored in a Flash EPROM
4 |7 q6 g( m5 n. Q/ ~ M1 d! n/ d after switching the unit off (unit contains no battery).' }6 u! A% |$ h) N+ G$ g' c
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position7 {" h1 F, {; ~% i
between microphone and line sensitivity setting ranges.
3 V" y& {* p: ~ Mic: Range –40...+20 dBu$ |* u X5 ?( z' O6 D# ~! P
Line: Range +14 dBu, +24 dBu
, k" e4 G) A& Y+ S: Q( O' q[3] Fine Gain Potentiometer for fine input sensitivity setting., u4 M7 P7 y9 |
Range of additional gain: 0...+15 dB.' w& D: u2 V$ ?: o& {) f' Q
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
+ C# R& U" O. Q, l* C the dBu value of an analog input signal which causes a full-scale output of2 G1 E5 r% A# i& M* L
the A/D converter. y+ C4 V2 A# K- X
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;' f$ m: z; ?" L: x2 s
the peak level is therefore +16 dBu. The “Input dBu FS” rotary& I. M7 \$ L' j0 R( S! I
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
! s/ F3 E! j) L" ~, x2 \( [. O Gain” potentiometer [3] increases the gain by 8 dB.
1 l5 Q# h7 ?) ?6 Y. k[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
8 a& ^9 z: i' O1 z0 @ q[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
& n$ I& g. g* | have more body; percussive instruments are less aggressive., X0 {2 {* J( k2 C& ~8 ~
The group delay behaviour due to AC coupling of the stages is different in5 Y: R8 Y8 p; ~7 `+ \6 M
tube amplifiers.) a/ {# K/ \& X3 k; M8 A- C
The “Bass Warmth” control allows to select the frequency range$ q2 ^' Y6 ]2 g" P% |% d
(10...200 Hz) within which the effect is active.7 m5 q& H8 d; ~+ ~
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
6 ~4 L% j! C: a2 g7 q# o Valve amps have a characteristic response, mid-frequency harmonic content
) i @. } i' c; x4 R# E$ s is emphasized.; M' B, j& V2 }8 g* A8 N6 b% s
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
9 J- K) @: S( e/ k/ M/ _& D% } The harmonics spectrum of a delicately overloaded valve amplifier is completely
w- x1 g" y+ ?1 `6 r! W$ m( n different from an overloaded transistor stage.
( k; S. I5 v9 W) P# I3 Z The “Gain” control adjusts a gentle overload while the odd-harmonics content! x3 S. ?3 G. R+ o5 R+ H" U
can be adjusted with the “Clip” control.
, }% v h/ t8 p5 t$ G9 \& u3 B[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24& ?# r- z$ I+ h& ^! o
dBu FS.
$ U5 n: k& u3 k[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
, j e3 M/ t, B! X9 v desired channel.) ]: Q. C5 \7 t0 _
The “VALVE” LED is on when the Valve Dignifier stage is active.
( M0 N9 j- K8 q4 r3 c6 @[9] INSERT INSERT function.
, X* w' A1 v$ k. k) S% `. n First key pressure: INSERT POST VALVE, the Insert Send is tapped after$ [; Z% g+ |$ \- N
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
6 r& `, ]8 z' N0 W6 M4 z- {1 q and AES/EBU outputs.' y' [; W4 j$ k
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
: l) C2 B8 t4 F+ Q6 T: D. Z the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
5 B6 \7 r7 Z! N+ B the valve dignifier stage to the Line and AES/EBU outputs.
/ e- d9 Q* ~7 Q6 Q: g2 W Third pressure: INSERT OFF, the input signal is fed via the valve dignifier- b' N: R1 X# r: C
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output- ?5 r( |; f; \. q# d# j) g
receives this signal; display: none).
3 L( x/ m& l# ^, s Insert Send and Insert Return are electronically balanced and equipped with
' X. K, o# r3 A2 y! S+ F8 K XLR connectors.1 Z1 ]. z; W# [& J3 ] k
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
0 u, l, F$ ~' S! n; E ADAT digital interfaces. Each input channel can be switched to one of the1 Q+ A1 d2 I+ T
channels 1...8 of the multichannel interface. If desired, also a mono mix is/ n" x; Z( [- H7 V# P9 ?# F5 I
possible by selecting the same output channel for both input channels.
9 L" l+ W, P5 W S[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, l2 B$ s1 c, r- I- F6 _5 B channel.% w3 Q+ _2 u% j& V# G) E
Can be operated only if the input gain selector is in Mic position. The/ u3 u/ J& a/ }5 r
setting remains stored when switching over to a line gain setting.' J: o b+ I+ M9 w! l
[12] Activates the high pass filter on the microphone inputs of the desired channel. P* k p" }% ~1 f" j& l
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
( p: x% m( X1 j! P: N2 e Can be operated only if the input gain selector is in Mic position. The) ]& A, Y& m4 o% u* v5 m6 N
setting remains stored when switching over to a line gain setting.
0 e0 y$ B% N, ] V[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
1 n( D: l" _) |- }[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
% O3 N; j6 S2 m4 A% C' d. }9 R “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with6 J/ H1 t0 o/ Y5 u
Noise Shaping (display: “16NS”) can be selected.
, z* h, L3 Z/ T: p/ ?- r[15] SYNC Selects the synchronization source for the unit. Possible selections are:
$ n& C2 e5 d) j! I8 X" _ INT 48 Internal quartz reference, 48 kHz
0 |% W: ~# n. S INT 44 Internal quartz reference, 44.1 kHz
r0 t5 Z) E( f* o& J1 f \( N WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
) o6 }8 p, }! ]* m& W' @ AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)7 b. n5 p4 f+ B
AUTO Selects sources automatically in the sequence AES-WCLK-INT
+ |2 Z; ]) z+ v% B$ x VAR Indication only, active if the external source frequency deviates from 48 or* S* p) Z8 i) V; w t7 B8 ?/ b
44.1 kHz for more than approx. ±3 %.# w/ Y, F9 q5 a5 [, M9 U# ^
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –/ x7 |) S& a. i& D6 G
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.) n+ s% a/ ^& @& d/ T& w' y" Z
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce3 N! ~) ]/ @1 _. X7 A7 _. K
the danger of overloading the A/D converter with short signal peaks (if6 C0 i* Q/ g& O( w2 w
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,( n! |+ X/ r& v6 G' b$ O ~' j- R
allowing for approx. 6 dB reserve before hard clipping occurs! |- Q9 U4 |8 ~
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