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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1 q+ x+ |7 J' e) U' X' j" u4 K1 y
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory& G$ j' w- v) e$ X
default settings. The subsequent settings remain stored in a Flash EPROM
8 r: H! Y2 ~0 ~5 ]% D after switching the unit off (unit contains no battery).
. r. Q; v+ [3 M( r[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position; B2 L$ P) Z- s, c- ]0 Q k, b* F
between microphone and line sensitivity setting ranges.' w5 [# Z [5 U/ k9 b3 { n
Mic: Range –40...+20 dBu% a: E' m0 m! N6 c
Line: Range +14 dBu, +24 dBu
! d* t* S$ O# U D0 c* \% L+ p[3] Fine Gain Potentiometer for fine input sensitivity setting.
5 I7 a1 m& f2 [ G8 V7 r: Q Range of additional gain: 0...+15 dB.
6 }$ U/ D1 X% Y, Z5 j Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
, g, G& E6 v1 J$ D$ F the dBu value of an analog input signal which causes a full-scale output of3 Q% @9 ]6 D& D( M4 ? z
the A/D converter.
9 P% U W+ D$ }: [( J. o1 n9 J Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;( g* h! g3 ^5 C$ m' L
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
' V2 q; D3 S- G- S- i+ r" N switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine/ \+ \! S$ r; K0 { j* J+ ]
Gain” potentiometer [3] increases the gain by 8 dB.
" {9 P/ {5 R4 |1 I9 W: l4 S[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
4 `2 C9 B8 @) a[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
& W+ ?1 `8 Z6 T! y4 ^2 c" u4 w/ A have more body; percussive instruments are less aggressive.2 r; F3 m+ y: p, x; P, o9 j
The group delay behaviour due to AC coupling of the stages is different in
$ H+ Z. _% L! \ tube amplifiers. [! d3 {+ s* }9 j& R8 I7 @5 d
The “Bass Warmth” control allows to select the frequency range; z7 B1 j# V7 V; v: m
(10...200 Hz) within which the effect is active.3 J2 W# ?4 B6 ]4 T
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.. G' K* G1 m) g1 t
Valve amps have a characteristic response, mid-frequency harmonic content9 [# T5 Z8 d" W* E/ G, b1 N
is emphasized.+ t6 x) f7 ]# f T
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
5 L( m0 K& @# @; Z. T The harmonics spectrum of a delicately overloaded valve amplifier is completely: I3 e; c1 u6 ^8 M
different from an overloaded transistor stage.
5 H" m4 W! y' m% j9 m) ? The “Gain” control adjusts a gentle overload while the odd-harmonics content
2 z% s! }+ D4 l1 Z9 C3 x can be adjusted with the “Clip” control.2 J N8 j4 N, P7 @3 e1 Y. F% t
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
8 I" f X9 \4 H j b dBu FS.
9 u) V4 R7 c. }8 {* K9 w+ F% _[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the3 S& G$ ?& Y! O- D. r# H
desired channel.
! t' r$ k6 j. u The “VALVE” LED is on when the Valve Dignifier stage is active.0 \9 _* d6 b( w) H! z r
[9] INSERT INSERT function.
! o* Q! A2 a% q/ K. v First key pressure: INSERT POST VALVE, the Insert Send is tapped after' N/ J; T* ~& N- Q1 N
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
+ q7 V }$ j/ R2 }8 M and AES/EBU outputs.
+ D, O" p3 w0 A& q; s Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before; m5 B/ Q. r: d! e! H$ ?; @
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
' V+ a; r8 p) i# Z/ e, E the valve dignifier stage to the Line and AES/EBU outputs./ X1 S, A0 N( ~2 y9 Z8 I: P
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
! V$ H `) M) N2 R3 C/ q- [& n2 F stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
- B G! Z/ Y5 I8 ^( R' k j receives this signal; display: none).% M# y5 B2 ~- M1 v
Insert Send and Insert Return are electronically balanced and equipped with* f* e' ~+ x6 W6 ?9 P; W
XLR connectors.- L" |! d% }7 m, r" U
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or* q3 w* P1 O4 ?7 ^
ADAT digital interfaces. Each input channel can be switched to one of the
1 t! P. G3 _- Y: k: k3 v2 v' c! N channels 1...8 of the multichannel interface. If desired, also a mono mix is! v& T7 W" H; b7 n' O6 z1 m" p5 i
possible by selecting the same output channel for both input channels.2 v1 o% C( u( p# s/ a
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
& Z2 m9 C0 a, l W: \: ] channel.. C: N# e# S$ g( I7 ~7 |( Z
Can be operated only if the input gain selector is in Mic position. The
8 Q* v! R6 L3 S0 d setting remains stored when switching over to a line gain setting.
' n9 y3 @* s9 Y$ |9 I7 h3 d[12] Activates the high pass filter on the microphone inputs of the desired channel.* t! Y( T) ^" Q; q6 n
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.) \( [1 n/ {% ]; l
Can be operated only if the input gain selector is in Mic position. The
- B: g! Y7 a& R" ^4 q# z2 ` setting remains stored when switching over to a line gain setting.+ r0 G% B: G; d( [4 K* P
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.5 T3 |7 g, N, E- z" j, a4 d4 W
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:% C6 x B: x! b/ P9 @: x: O
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with0 w2 m j, C/ `. x5 `
Noise Shaping (display: “16NS”) can be selected.
9 Y3 [0 F/ W7 ], N- ]" d; Y[15] SYNC Selects the synchronization source for the unit. Possible selections are:
# d. ?: M, U. R7 L- w# R+ j3 F% a INT 48 Internal quartz reference, 48 kHz# D5 g& `. }8 s8 z3 ]3 z5 X: i. x" k
INT 44 Internal quartz reference, 44.1 kHz
9 l$ F. A3 n' J) R- [ WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)3 n4 `. E L. y Y. _, v Q
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized). |! N e d- \4 U% Y; I
AUTO Selects sources automatically in the sequence AES-WCLK-INT
8 L! z4 a6 E8 m, o l0 G$ u& n, A VAR Indication only, active if the external source frequency deviates from 48 or
+ [% Y" W$ D: V- ^ {0 z, n" p 44.1 kHz for more than approx. ±3 %.
3 d/ i- C6 q) s* p[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –& r1 q' C4 O6 h
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s., A4 r; o* |, R& {
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
( X4 L9 s: N) y- T7 x6 b4 G the danger of overloading the A/D converter with short signal peaks (if w4 [& |( z- d
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,% k- h) k# F, U6 i
allowing for approx. 6 dB reserve before hard clipping occurs
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