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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 8 g$ |4 q' M2 I6 N% W
! D# b3 O8 _+ D5 q: ~7 w7 m% J8 H英文电子说明书
& m0 F0 w( [4 S; \[1] POWER Switches the unit on or off. The unit is ready to operate with the factory; l# p3 f0 ?' \- B& c( P
default settings. The subsequent settings remain stored in a Flash EPROM$ g/ J- n- ~: ]
after switching the unit off (unit contains no battery).. \9 ]4 N3 P0 r
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
' E5 T9 p$ l' g F4 ^ between microphone and line sensitivity setting ranges.$ ?) I' |3 n' H" e5 i, R8 N
Mic: Range –40...+20 dBu- `4 u8 H. _% ?( ^& a
Line: Range +14 dBu, +24 dBu
) l! s K+ F) j[3] Fine Gain Potentiometer for fine input sensitivity setting.4 H4 o, z# I. a$ M3 J) g
Range of additional gain: 0...+15 dB.- [1 H& C2 |7 i8 V7 ~
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents% |* {4 s8 O! L: o. C+ g
the dBu value of an analog input signal which causes a full-scale output of$ ]( O, B2 l+ ^- H' h
the A/D converter. ~1 d- Q! S9 N3 H/ r& w
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;- H2 v* P& T7 Q( c; i# ^
the peak level is therefore +16 dBu. The “Input dBu FS” rotary2 ^2 `; K6 \$ ]' B9 S1 F
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine( @; J. f. j/ } w5 y
Gain” potentiometer [3] increases the gain by 8 dB.
8 K" r4 B/ Z4 s/ s4 O8 w; O# P- V8 r7 P: q[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
; c) q# I9 ?/ r& U" T' k) M[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
5 e9 R0 ?1 o2 r( i& x" x( ^0 f have more body; percussive instruments are less aggressive.
- C+ K' k. i' [& K4 T- D h! ~ The group delay behaviour due to AC coupling of the stages is different in& X4 t/ G" C C/ {# i6 d6 R! @
tube amplifiers.
- ?: R& y* P. B! s# p7 ` The “Bass Warmth” control allows to select the frequency range( n/ W7 X3 c% Y( v3 L
(10...200 Hz) within which the effect is active.% e+ b6 l& j' K, X N( B
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.: ]% Z& I- X4 @; t( ]# {# ?
Valve amps have a characteristic response, mid-frequency harmonic content
0 L# J3 w# X1 B is emphasized.
; B8 y, y/ T& }! h* |[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
) }! P3 W8 e. Q# i' I! o) M6 P The harmonics spectrum of a delicately overloaded valve amplifier is completely' c2 X7 x- e" p" ]
different from an overloaded transistor stage.7 k, O( U! m# u5 r! j5 Q6 G! w
The “Gain” control adjusts a gentle overload while the odd-harmonics content, R: Q+ ~" q) Z7 U- E, F/ Q7 q
can be adjusted with the “Clip” control.2 h- @" z- m$ O- f& ]% P
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24& Z6 c* }2 P' c# c1 U7 e H
dBu FS.
2 h: K: _5 r! I: d[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
5 {" B0 w, Q# A& Y$ N desired channel.
4 K( I" `- i5 H& S The “VALVE” LED is on when the Valve Dignifier stage is active.9 m" i8 _+ V3 q9 H$ v
[9] INSERT INSERT function.
; n% S& A6 b& |& w First key pressure: INSERT POST VALVE, the Insert Send is tapped after
( o: k" _+ O1 n: q$ o+ P, W: ]& s the valve stage (display: “INS”); the Insert Return is directly fed to the Line
! Z2 v; t) f5 ]4 L0 Z4 P( T p( E2 p and AES/EBU outputs.1 _, |( x1 o( w' H( I/ B
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before8 k' V9 [: v/ |7 A7 k- w U
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
; N; k5 v0 g4 l1 h8 e2 R2 U, W: q the valve dignifier stage to the Line and AES/EBU outputs.
+ ^, w+ k7 j6 @ Third pressure: INSERT OFF, the input signal is fed via the valve dignifier4 h( ?2 b5 |. L5 q
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output( d5 o/ U; L- }9 \" b6 m
receives this signal; display: none).
3 k% [1 H# i' |4 d4 J2 U Insert Send and Insert Return are electronically balanced and equipped with) }1 b3 L/ @9 B- C
XLR connectors.7 j# Y8 S" o( M1 V4 \, v/ J
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
/ V/ v( ^7 q! m/ s ADAT digital interfaces. Each input channel can be switched to one of the ]& v! n- D, g6 w
channels 1...8 of the multichannel interface. If desired, also a mono mix is
; T! U& o7 p8 t1 o0 d9 ` possible by selecting the same output channel for both input channels.
9 {8 b' O2 x5 s3 B' N[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
2 n8 H$ J" M3 {+ M+ @0 w9 H+ ?2 h channel.. ` R& a& ~! S- R
Can be operated only if the input gain selector is in Mic position. The
' `! q' J% W: q8 i0 B! {; u setting remains stored when switching over to a line gain setting.) f* ]0 W% k: T. q1 Q' C* x
[12] Activates the high pass filter on the microphone inputs of the desired channel.6 d9 w3 j2 |) \; d& H8 Q
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.3 s( ^( `2 _% {% A" |& W
Can be operated only if the input gain selector is in Mic position. The0 |1 W, y& e& b' C
setting remains stored when switching over to a line gain setting.
) U W2 t1 ~+ t1 ~5 s: I2 C9 a[13] Ø Toggle key to activate the phase reverse switch of the desired channel.6 Q: n' m" Z3 _5 B
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:. R& {! v2 [1 l" s0 a6 c
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with) Q! i: x- t9 A4 K9 p
Noise Shaping (display: “16NS”) can be selected.
* H2 {+ S' Y6 S. K# o( i[15] SYNC Selects the synchronization source for the unit. Possible selections are:" u& K7 s7 {$ R1 _% ~9 _% Y% ^5 q
INT 48 Internal quartz reference, 48 kHz
( T# C; W, H) M4 [& c" \ INT 44 Internal quartz reference, 44.1 kHz6 p; T! M/ ^& _ U G+ v2 m! i
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
) p, q) u' N7 A3 M0 C AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
9 {" e r- s3 S3 l" q1 m# j( I AUTO Selects sources automatically in the sequence AES-WCLK-INT
5 m/ m4 b7 b& h: F0 y VAR Indication only, active if the external source frequency deviates from 48 or
! [9 U8 o. _4 x8 `* R* c 44.1 kHz for more than approx. ±3 %.9 W$ L9 g5 T8 T( @4 b) ^
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –: J- y" L" J% _1 _: C
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.! |" Y% P/ y' m# |& p
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce7 ^8 C- ]8 ^8 G
the danger of overloading the A/D converter with short signal peaks (if- {3 W7 e. O; ], O0 X- P( t8 X
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
% a$ \6 I& }" a allowing for approx. 6 dB reserve before hard clipping occurs
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