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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
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英文电子说明书( P% v$ L$ H( ^) q4 {6 s8 G
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory) K" Q* W1 W: W: k& e7 |) [& j% q
default settings. The subsequent settings remain stored in a Flash EPROM
, ]6 z3 @' [/ D3 ^( x+ Q \# p after switching the unit off (unit contains no battery).; F. H+ b' A g! [% P' g+ L' ]1 k
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
: p1 Y" u' _6 a* s W `1 @7 w2 J between microphone and line sensitivity setting ranges.. Y& e5 c, Y" h
Mic: Range –40...+20 dBu
1 P( q7 g* w! b( Z Line: Range +14 dBu, +24 dBu! B2 q' C: o9 {, @! c3 d* U
[3] Fine Gain Potentiometer for fine input sensitivity setting.* h5 r( B+ g3 e6 Y
Range of additional gain: 0...+15 dB.1 P+ X" G4 {5 d, m
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents7 U! ?& v* ?- M- ~! i4 O
the dBu value of an analog input signal which causes a full-scale output of
0 j7 K }# u/ o% K8 H! H" c the A/D converter.
/ \, P( @) W0 t2 c. ?' a Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;$ s, i# f$ p1 {, j
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
/ B# A1 k" G* A& o0 N# d switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
7 _& z& o( S# t( F! ^9 P7 ~4 s u Gain” potentiometer [3] increases the gain by 8 dB.
$ n* L0 B1 @* X0 L% N v[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active./ T2 q6 `4 c, j f3 i
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
8 \/ @' ^+ _9 R6 Y# f! C have more body; percussive instruments are less aggressive.& e; M( J& I" Q2 ^% F: }; v0 ^& {
The group delay behaviour due to AC coupling of the stages is different in6 y7 s- |0 S4 {
tube amplifiers.* k$ Y, x' l: b# d: X! ~, L
The “Bass Warmth” control allows to select the frequency range5 J( ]) N7 E- g z
(10...200 Hz) within which the effect is active.
% I/ H$ H- G& B9 r4 P( N, n. w[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
+ a1 F1 i: L9 ` E T1 ` Valve amps have a characteristic response, mid-frequency harmonic content: T4 G0 L' u5 f: j- z6 k. `+ t
is emphasized.
+ @3 v7 t) l2 Y8 |/ `2 g[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
7 \5 w- S4 g$ m ?6 o. J. K The harmonics spectrum of a delicately overloaded valve amplifier is completely5 I2 |( x6 m: s' \
different from an overloaded transistor stage.
5 A0 z4 q) p* V! Q4 G% g; r The “Gain” control adjusts a gentle overload while the odd-harmonics content
; u: `0 s6 b8 t R can be adjusted with the “Clip” control.7 O, O- _9 E3 N; u3 e# p+ ^
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24, {! h( f$ g& I, u/ g, ^
dBu FS.1 ]; p9 X. y$ i4 s; u3 |( V' e! r/ m
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
$ |( o+ w( ^3 C" t desired channel.! n- N6 o9 }- U# u. s: g! X
The “VALVE” LED is on when the Valve Dignifier stage is active.
% h& `" g- c: O8 S! V[9] INSERT INSERT function.8 m7 j ^0 A/ d% _8 W1 ^
First key pressure: INSERT POST VALVE, the Insert Send is tapped after7 G2 `4 | q y# h
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
) {9 y A( F1 T0 U and AES/EBU outputs.
# [+ P/ p) J" f2 C2 [$ p- j Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
1 ]2 j$ y0 y: I% ]# K0 e+ d the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
/ Y" i& |5 n$ @3 Y! x$ d/ C the valve dignifier stage to the Line and AES/EBU outputs.
* b5 S! g' @9 z* h, D2 w; L& B* B Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
9 [! ~0 o( i) ~# M stage (if active) to the Line and AES/EBU outputs (also the Insert Send output% X* ] S$ E, h! ]' n- J4 ?; Z
receives this signal; display: none).5 {# i" ]' _8 J# I: t
Insert Send and Insert Return are electronically balanced and equipped with9 M: p# x# _7 b! ~8 n6 E
XLR connectors.# v8 p+ r$ N' {9 E. @2 }
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
0 L8 l6 f- P7 t/ A# a$ v( A& J ADAT digital interfaces. Each input channel can be switched to one of the
$ K. W# N2 e, c0 a- t& O# b channels 1...8 of the multichannel interface. If desired, also a mono mix is2 C" F3 b! c9 M7 Q$ P1 A; [( L
possible by selecting the same output channel for both input channels.
* w8 u( W# z; C4 o: N, P[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone6 }2 D: i+ {* v: ~5 p) t
channel.6 x: j ?7 p+ u( ^* x
Can be operated only if the input gain selector is in Mic position. The
" |2 ~# u8 }% m+ b5 J setting remains stored when switching over to a line gain setting.3 w1 S# Y7 C# u! ]# R
[12] Activates the high pass filter on the microphone inputs of the desired channel.7 m( l. |" S1 w! t0 L. f
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.# n7 t; k4 P5 I* z+ W8 V. c9 ~
Can be operated only if the input gain selector is in Mic position. The) _9 R# z& f0 p# e
setting remains stored when switching over to a line gain setting.
" U$ R |. x8 W. v5 |) E. J3 F1 o3 t" G4 `[13] Ø Toggle key to activate the phase reverse switch of the desired channel.6 D& _+ q. e: U O$ v* Y
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
! U2 a, ` Q5 [( | “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with! D1 g' ]- k. R& e8 k* b
Noise Shaping (display: “16NS”) can be selected.
4 ^% a4 X- }1 N[15] SYNC Selects the synchronization source for the unit. Possible selections are:
) d* w/ S1 n' T$ ^+ t: V INT 48 Internal quartz reference, 48 kHz) g8 ?6 H$ B$ }6 ?
INT 44 Internal quartz reference, 44.1 kHz5 Z. p& {1 r% \! p
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)& H R+ w: [0 z! i- ^
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
3 O3 {3 D- M! F% U. p+ M3 w" m- v AUTO Selects sources automatically in the sequence AES-WCLK-INT" \7 @7 r. m1 v( S& ]3 g
VAR Indication only, active if the external source frequency deviates from 48 or
% j0 v* U6 {% |* Y3 M9 [ 44.1 kHz for more than approx. ±3 %.
. _/ Y$ [" F! x Q9 W1 V. H/ y[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
0 u& N, d. O9 B P! |1 Y either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
0 i, W7 q9 c7 p3 H+ \$ E0 l( Q[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
# j" J- d( Y0 o, h5 c3 _& E( c( Z the danger of overloading the A/D converter with short signal peaks (if. J, O4 k" i1 d# ]& d, l
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,9 a5 @1 {7 j6 h. M! o1 ^, A7 d* }
allowing for approx. 6 dB reserve before hard clipping occurs
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