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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4 _- _, l" Y. q3 X4 @) U6 m, N
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory" O& o P$ n. W0 Z. ^2 p2 k
default settings. The subsequent settings remain stored in a Flash EPROM$ u* P% r6 S# p. i
after switching the unit off (unit contains no battery).) O* w3 w' m, M3 f$ N8 Z
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position2 }/ R# q, z8 X/ f) E
between microphone and line sensitivity setting ranges.% J# L1 J6 n( ~- N+ f
Mic: Range –40...+20 dBu$ y- N2 ~% G9 }; R
Line: Range +14 dBu, +24 dBu d$ q! u6 \. g$ a2 ?
[3] Fine Gain Potentiometer for fine input sensitivity setting.3 z& _* o, Z, U! S% p' b' G
Range of additional gain: 0...+15 dB.
$ m4 I# Y1 k0 t5 @ Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents! `6 S* z0 I0 P" ~$ r
the dBu value of an analog input signal which causes a full-scale output of+ \! ^; U2 A: o/ j4 u
the A/D converter.
7 _! I2 d7 b/ R7 ?0 c, \ Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
0 A A6 k! T: o9 p: a3 l the peak level is therefore +16 dBu. The “Input dBu FS” rotary' Y$ o# K% ^0 t" d& f
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine* b( c6 n& u( Y. v3 L* M' @$ [
Gain” potentiometer [3] increases the gain by 8 dB.; D& M# |' n5 w3 J* l
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.7 q1 O: f8 i4 l% N/ t8 q
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals, O/ G) o4 P3 I' P' C
have more body; percussive instruments are less aggressive.
, a7 |" x. l1 C; D. t' ` O4 | The group delay behaviour due to AC coupling of the stages is different in$ z7 Y* i; I! P/ J. m+ N
tube amplifiers.
& s% a8 V/ r8 c# v& W The “Bass Warmth” control allows to select the frequency range$ B) Q' M6 ^( @; F
(10...200 Hz) within which the effect is active.6 Q3 p6 e$ ^; g" y; |4 `
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.4 f5 k* M8 s, w/ C
Valve amps have a characteristic response, mid-frequency harmonic content
" b f4 z5 F# i0 I8 K- i is emphasized.
2 U6 ^: x& c8 ?1 R4 {9 l% f[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
# \4 p8 K0 `3 n! J5 `2 J The harmonics spectrum of a delicately overloaded valve amplifier is completely' B/ F. j+ L, B O# q
different from an overloaded transistor stage.
- C7 a( {# D0 v+ |; p The “Gain” control adjusts a gentle overload while the odd-harmonics content
. r" O8 G5 Q& q$ I can be adjusted with the “Clip” control.
0 P5 h4 F. O2 U[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
- t( a* q) N! J: k/ |. a dBu FS.) Q. G9 ~% g a5 V8 O
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
7 j- h0 e* Y) Z+ I$ r3 m1 d' C desired channel.3 Q4 @; Q2 w R5 a; w8 H
The “VALVE” LED is on when the Valve Dignifier stage is active.
* e: m( O- _0 k[9] INSERT INSERT function.
. _4 \( {8 S' U1 v First key pressure: INSERT POST VALVE, the Insert Send is tapped after9 @) S! E( t3 r! z
the valve stage (display: “INS”); the Insert Return is directly fed to the Line; ?2 s4 N0 X3 x. ?
and AES/EBU outputs.0 M7 Q/ z' L" \, ^1 h
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
6 x4 m1 r, G' g5 e* I: \* P the valve stage (display: “INS” and “PRE”); the Insert Return is fed via* ?' r" v" w$ i2 X
the valve dignifier stage to the Line and AES/EBU outputs.
2 b5 }4 l4 Y. i) S+ g' j# S, i Third pressure: INSERT OFF, the input signal is fed via the valve dignifier! [" i2 v& G ~3 v7 @+ W
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
0 Z2 z6 ^; c( \ z6 q receives this signal; display: none).
" y2 p; c5 ^. B v" h Insert Send and Insert Return are electronically balanced and equipped with8 }( z4 d* {; a
XLR connectors.
+ E7 w( d7 w3 r! h[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
6 M; r. f5 o/ @* b ADAT digital interfaces. Each input channel can be switched to one of the
6 e7 g4 r: h) K$ ? channels 1...8 of the multichannel interface. If desired, also a mono mix is$ A/ r/ v% |' h# J' B/ v
possible by selecting the same output channel for both input channels.1 y- C o6 N7 Q1 S$ b3 z. L
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone! a( j+ u# i1 x, D7 Q+ a ^3 w
channel.
* P/ I2 m: ?" ~: b' g9 I Can be operated only if the input gain selector is in Mic position. The) Y) M% B. O! \% v5 J' n B7 g- ^9 }0 {
setting remains stored when switching over to a line gain setting.
5 t3 P- a( A' | c[12] Activates the high pass filter on the microphone inputs of the desired channel.& f0 [: F# w% b' G
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.) X/ N, H3 e8 ?$ p
Can be operated only if the input gain selector is in Mic position. The
! _& c7 ^5 S9 v, {/ W& b% l% H1 j1 q setting remains stored when switching over to a line gain setting.
c7 R& c1 `" B! p+ Z[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
% v% `& @1 y& P" ]" i[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, [" r m) W/ x9 ~8 k' B6 V! j “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with# U6 d! a, a& r \: g
Noise Shaping (display: “16NS”) can be selected.4 v( B1 B4 I) k) H
[15] SYNC Selects the synchronization source for the unit. Possible selections are:' z% n5 j( s; b
INT 48 Internal quartz reference, 48 kHz* j9 S5 M) R: `( ^0 U3 w2 x
INT 44 Internal quartz reference, 44.1 kHz `* m* M, k0 L0 }2 U# O5 Y
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)1 l, d+ h* @5 j" _1 b; `% @
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
s$ L5 C& |7 B/ d- e) D AUTO Selects sources automatically in the sequence AES-WCLK-INT6 j# Q: @/ M9 E% i% }. c U
VAR Indication only, active if the external source frequency deviates from 48 or, p* M. {* G5 w7 J$ g
44.1 kHz for more than approx. ±3 %.# N& C8 B/ [4 F& r3 A* Z9 w3 |4 Z& q
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
6 U! C' p/ A2 Q4 b either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
: O- M: F( w3 l6 b! [* J[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce7 G7 {% a9 L+ K
the danger of overloading the A/D converter with short signal peaks (if% o0 B! I h4 g5 `, I
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,% \# S' Y5 ?, i% Z( T
allowing for approx. 6 dB reserve before hard clipping occurs1 N8 |- B) C9 p" A
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