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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 8 X3 R+ W$ m. }6 |* _2 `9 d6 {8 B
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英文电子说明书2 g; M9 }6 b% E% ?; ?
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory( j; ? [9 w# ?# L) C( o7 o
default settings. The subsequent settings remain stored in a Flash EPROM- d- E9 k1 ^$ G
after switching the unit off (unit contains no battery).
, y3 U: E& W& C, |9 D, `$ V) x) @[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
, {9 H R, i2 }& @7 g8 v between microphone and line sensitivity setting ranges.) U) ], T3 L) Z. J( y% W
Mic: Range –40...+20 dBu2 G& V9 M" M6 i& q: R: N
Line: Range +14 dBu, +24 dBu1 N. b7 I% |2 J8 b z
[3] Fine Gain Potentiometer for fine input sensitivity setting.3 J! k t1 y' x) {$ _& |- Y! b
Range of additional gain: 0...+15 dB.
* n. G4 d, B' _ D/ M' N9 y3 F Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents4 a7 @- b3 W4 j5 N# f
the dBu value of an analog input signal which causes a full-scale output of8 x4 G% b+ d7 d# E4 D- U
the A/D converter." f- v+ R% M4 [, ]
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
7 l6 m" f; f* X. H% f$ [ the peak level is therefore +16 dBu. The “Input dBu FS” rotary1 R7 @* u) v t2 _7 S
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine+ r( n7 L: D6 @6 v/ M) }
Gain” potentiometer [3] increases the gain by 8 dB.: k( c( M/ d$ Z+ M
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.+ U1 G' g: b: _
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
7 {0 H- L z- ?# a9 {6 [ have more body; percussive instruments are less aggressive.
- ]+ h; Y- ]6 Y) w$ g9 T/ p+ R: \ The group delay behaviour due to AC coupling of the stages is different in9 x1 Y( v1 J$ `. b
tube amplifiers.
1 }7 \: W. B: U The “Bass Warmth” control allows to select the frequency range0 j t6 G# p' v6 Q
(10...200 Hz) within which the effect is active.
$ X7 }2 G. `- I4 }! q[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments." t0 k$ y Z/ w- m
Valve amps have a characteristic response, mid-frequency harmonic content+ y2 I Q2 T( `! L
is emphasized.
6 T c0 }( U4 y& ^) J+ D[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.- K3 h" H* r# P# H" \
The harmonics spectrum of a delicately overloaded valve amplifier is completely
! Z% Z/ n, L8 R4 C! I0 `1 m4 @3 z different from an overloaded transistor stage.
x* d1 P( l3 T% ]& l The “Gain” control adjusts a gentle overload while the odd-harmonics content
4 w) t X3 {0 q/ ? can be adjusted with the “Clip” control.
1 J* p& e' U- c }7 m. H6 V/ z[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...243 g; b4 s1 C0 t2 E/ X
dBu FS.
! e3 }: _; y& R3 N) y[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the4 `, H' Q5 d6 t
desired channel.2 j3 L# @, \: r$ v6 d: ?7 U/ j( P9 c
The “VALVE” LED is on when the Valve Dignifier stage is active.
5 [7 E1 }7 j+ H/ G& G) q# l[9] INSERT INSERT function.! ]6 Q" p. v: W7 K2 o
First key pressure: INSERT POST VALVE, the Insert Send is tapped after2 p3 z. E. X8 a m/ @
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
, v$ B; i* D/ h' P7 a, H, D" e and AES/EBU outputs.
! x' M% P" c( e/ {' P, i! u Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
8 K z. e b3 ?. r% X8 z3 |! [ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
?! N. L) w/ `; F( b8 |3 t the valve dignifier stage to the Line and AES/EBU outputs.( P* R5 M: l- Q! e4 @+ o6 [! ~
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier) W H* b& G& v+ X; N: ^! f
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
& B. u& i& X1 B8 V" B1 D receives this signal; display: none).
8 ~7 c. i( L5 b% F1 q* t Insert Send and Insert Return are electronically balanced and equipped with
7 B8 B- g$ J k0 z4 d+ ]; Y$ B% Z XLR connectors.9 F- X) j8 ^# b% @
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
" O% W* Z$ ^$ H% {+ {+ e ADAT digital interfaces. Each input channel can be switched to one of the+ U a9 U6 Z" P$ O
channels 1...8 of the multichannel interface. If desired, also a mono mix is" o; ~9 e9 R0 _& J T: X7 `/ X- _/ `
possible by selecting the same output channel for both input channels.
, ?0 Z1 H; m0 E6 Q& ?[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
6 f9 f/ H# I3 Q a4 E channel.
2 U8 A& C7 I$ J1 S Can be operated only if the input gain selector is in Mic position. The1 Z, p2 y; L+ a$ [: n/ q$ N" T
setting remains stored when switching over to a line gain setting.
$ e. W, i# _. h" F" ?; T[12] Activates the high pass filter on the microphone inputs of the desired channel.! \( m" M' B. |9 I
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.7 l- c8 J1 Q5 {8 z% h
Can be operated only if the input gain selector is in Mic position. The
, z% E& w+ d2 Y! Q, o" b8 {" _ setting remains stored when switching over to a line gain setting.
) b9 L" v6 w k- H v[13] Ø Toggle key to activate the phase reverse switch of the desired channel.4 U; ~ ~ ^) }, ?
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
. v# H! K, Y/ f8 \0 K/ L “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with, d, v! b4 L2 r. C
Noise Shaping (display: “16NS”) can be selected.
1 g% i' B. W9 d, V/ U4 T! F[15] SYNC Selects the synchronization source for the unit. Possible selections are:6 o/ ?7 A$ Z' H! t
INT 48 Internal quartz reference, 48 kHz. [* s1 Q6 Z% b& r* ?, J/ X g( `% p+ `
INT 44 Internal quartz reference, 44.1 kHz
; g* Y; r2 L1 [: _6 O, } WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
! a1 l8 C0 n, I. `3 T AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)/ Y) g% j4 f/ P" E5 \
AUTO Selects sources automatically in the sequence AES-WCLK-INT2 X& D; }3 p! }0 Z. u% B8 g6 `
VAR Indication only, active if the external source frequency deviates from 48 or+ t' ?1 z/ v/ B
44.1 kHz for more than approx. ±3 %.1 J( J; V/ f# ` F# y
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
6 c) g- v% r& l2 W6 ^; t0 T either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
p; @# U" f, k- @$ [[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
1 M4 b3 g- m* Z1 V7 v the danger of overloading the A/D converter with short signal peaks (if) O7 e1 {3 }/ W3 E- d
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,5 H( C8 u% ?/ `7 Z* S" u& `
allowing for approx. 6 dB reserve before hard clipping occurs
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