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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 1 D5 C q$ F4 k, k4 Z& {) P1 E, O
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英文电子说明书% S9 [, V: z# g1 k
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory! ]; w' t# S4 x
default settings. The subsequent settings remain stored in a Flash EPROM
# [& z$ {& L0 A after switching the unit off (unit contains no battery).8 D f! U3 Q' b
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
3 c6 }0 I. s+ K between microphone and line sensitivity setting ranges.
# S- ?2 f, ^- K% @2 ` Mic: Range –40...+20 dBu
4 d: C. E: Y: X+ I( i7 m Line: Range +14 dBu, +24 dBu
: U r: ^& s5 E6 E$ Y$ k[3] Fine Gain Potentiometer for fine input sensitivity setting.
3 q8 L$ a/ b7 M" D* s& u! y7 b Range of additional gain: 0...+15 dB." B2 i' k& b6 W/ m2 B3 O
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
- ? n% d+ g* h' x* C the dBu value of an analog input signal which causes a full-scale output of. s; Z0 N* ?5 N: E/ @/ i
the A/D converter. h4 A$ ?; V6 s1 ~' S. K7 d$ h
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
( `, \; W# E+ b& h the peak level is therefore +16 dBu. The “Input dBu FS” rotary
m/ _' z/ U$ ^# u( C$ ~ switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine, O" N9 G2 _0 p/ |8 F4 L
Gain” potentiometer [3] increases the gain by 8 dB.
9 X0 C( F- e+ d2 U# `[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.' i8 a/ w( J' L: G: K* T
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
$ L+ h; @. \- K, m( `: n! g have more body; percussive instruments are less aggressive.( [3 v& x) J3 n F
The group delay behaviour due to AC coupling of the stages is different in
( m( ?6 j0 u0 M tube amplifiers.! P6 A# x6 L, [' T5 ^
The “Bass Warmth” control allows to select the frequency range0 z& K! J w1 m# f- A
(10...200 Hz) within which the effect is active.6 y( b" f: a4 t) `# F/ y
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments., K$ x3 I" O2 B T
Valve amps have a characteristic response, mid-frequency harmonic content5 `0 w# L3 A' [* d
is emphasized.) }* a+ [& |2 U6 l3 H, D
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.$ x8 I- x# \! l8 c. M: D8 q, I8 X
The harmonics spectrum of a delicately overloaded valve amplifier is completely* p# y) a& s6 i3 R2 d2 E6 H
different from an overloaded transistor stage.% t& ~6 F+ A5 C$ y
The “Gain” control adjusts a gentle overload while the odd-harmonics content
' O( t8 T5 J2 N$ i, x+ m: N can be adjusted with the “Clip” control.4 D' L" g1 Z: p$ J1 V& `4 ]
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
; Z6 ]9 ^ S5 \+ ` dBu FS.
" W" k* e# I; n# e& |( ]1 \+ t[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the2 _9 |3 s- z, A: n
desired channel.' e- X1 e' d: h3 j0 ~
The “VALVE” LED is on when the Valve Dignifier stage is active.+ y& e$ d$ Z7 j+ n/ D, H2 |
[9] INSERT INSERT function.
6 a0 P/ {& l' c4 V0 A9 F1 [* L First key pressure: INSERT POST VALVE, the Insert Send is tapped after
* ?4 e" m; k) J9 @+ X* u1 L. S the valve stage (display: “INS”); the Insert Return is directly fed to the Line
X, E6 M) j/ L# l, G! _+ G and AES/EBU outputs.: C4 o( L9 c9 n9 E+ j" e# }. m8 ]
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before9 G$ q" Z" o+ Y* b7 c0 `
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
' J0 L6 Y" s7 n X6 `* J2 S2 u the valve dignifier stage to the Line and AES/EBU outputs.. U) F' J; I) A5 B! @& F" ~# [1 ?. m
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier2 ]. K. M N& B0 M; x' Z
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
- n- v4 |: V& E& D1 ^& X receives this signal; display: none).
! J! B/ P& G, I+ _% t8 E9 P; `0 F Insert Send and Insert Return are electronically balanced and equipped with
" w2 q9 D: [8 C8 \ XLR connectors.
1 u; R/ f- k3 Z1 w: z: |0 z* J' Z[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or6 ^+ p7 Z* m y: s
ADAT digital interfaces. Each input channel can be switched to one of the/ ~: ^& m% K9 q$ o- L( a6 _
channels 1...8 of the multichannel interface. If desired, also a mono mix is
7 I3 A' \% u6 Y+ X# i$ ? possible by selecting the same output channel for both input channels.1 W/ Y: F7 B+ E2 o/ j
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
) W3 G8 _9 W' o channel.+ }. P+ H; `- v" x: F
Can be operated only if the input gain selector is in Mic position. The
2 c/ Q" T, s$ y9 V0 t) X setting remains stored when switching over to a line gain setting.; x ?% @' [( P* m, I
[12] Activates the high pass filter on the microphone inputs of the desired channel.
* t4 w0 Y! m& ]' k1 u Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.# J2 ~- O6 M/ J v" Q+ n; w$ p2 t
Can be operated only if the input gain selector is in Mic position. The
3 D) L; T& g5 C n9 N" U setting remains stored when switching over to a line gain setting.
" t" h% p/ g# d, T: ?, h& g/ l[13] Ø Toggle key to activate the phase reverse switch of the desired channel.; S* u+ _. \! n! `* Q
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:. a( z' l" j8 N) _( o5 ]7 P
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
3 ?; F T. n6 Q/ [ Noise Shaping (display: “16NS”) can be selected.
- L0 R! z) p, T! w[15] SYNC Selects the synchronization source for the unit. Possible selections are:7 k: e$ ~+ ^. N( W9 G+ ?, M! t. ]
INT 48 Internal quartz reference, 48 kHz y: m5 @& T9 q6 ?
INT 44 Internal quartz reference, 44.1 kHz2 {8 V- L/ y4 L( s* t
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)1 p) S6 v& H$ R% Y2 J! g( L! D
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)4 X/ c' t8 x$ |% a! Z
AUTO Selects sources automatically in the sequence AES-WCLK-INT8 x' Y0 H4 |+ }% w# e) w% `5 K
VAR Indication only, active if the external source frequency deviates from 48 or s% w: u/ y: k) c) W4 @
44.1 kHz for more than approx. ±3 %.
: a# d2 b" v4 |7 j# x4 r, R[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
* w" F! P; l0 i2 M, s$ h+ P either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
+ G+ \) E4 w+ {) P+ P) k% H5 A[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
% C) V7 x: X1 H$ I" M9 [ the danger of overloading the A/D converter with short signal peaks (if" u+ y9 t# W+ Y: q: S
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,0 L& o& S4 f9 O: Q6 l7 p9 Y
allowing for approx. 6 dB reserve before hard clipping occurs5 x- [# ^: x- w) O/ @( e! p
* U3 T: }+ I: C0 h. K1 F0 L
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