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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 o9 s# \2 a9 S% h/ o9 q
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英文电子说明书
5 X4 c# |3 T% x+ ~ K3 g+ }2 a[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
" S4 S; U% ^7 Q. {( ?) u& h default settings. The subsequent settings remain stored in a Flash EPROM
" p& E4 i: n4 @! _: k4 ^# W2 q after switching the unit off (unit contains no battery).
: ]# e. o3 @- _. F2 P, p ?3 A7 k[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
# W) c3 K h" b/ ?" Z8 p between microphone and line sensitivity setting ranges.6 t; Q, T: H, k$ A+ m' N) f" ]0 T0 j
Mic: Range –40...+20 dBu$ A$ m# `1 U( w! l) v
Line: Range +14 dBu, +24 dBu
' T0 T( N( P8 X6 W4 `) P: E[3] Fine Gain Potentiometer for fine input sensitivity setting.: @+ r' l& G* g
Range of additional gain: 0...+15 dB.# ?& \/ L' C$ }/ m1 h- } j& @* P
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
1 f) {! I9 |4 U9 ]# r the dBu value of an analog input signal which causes a full-scale output of
6 j' m7 N, t& b" ^) d2 B' E the A/D converter. m1 Y" I% v2 {4 C2 c
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;7 ^- q! p9 U$ G- F8 U- X
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
+ `2 |8 d9 d5 _$ t switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine5 p2 M- N! z7 f9 t7 d9 s/ _
Gain” potentiometer [3] increases the gain by 8 dB.2 W# c+ b: q' m% C m) E
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.: z$ `6 D, g. ?% n# j. t# n
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals9 y4 p- ~) @, _9 G$ V. t
have more body; percussive instruments are less aggressive.
# T$ F' @/ @) w1 p0 K# e' i The group delay behaviour due to AC coupling of the stages is different in
: p3 B7 m; J0 k# Z, V' W) n) S' N tube amplifiers.
# M T! b, s# m$ @ t The “Bass Warmth” control allows to select the frequency range
1 E7 V; v' n% B; }$ C (10...200 Hz) within which the effect is active.
" W. F+ d* n! ]. s: M- P[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
' @* G5 j( [9 g1 o0 j Valve amps have a characteristic response, mid-frequency harmonic content$ r( P Y& V( k! p! _
is emphasized.
0 R0 K8 ]: I$ t' Y+ R- A[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.% {2 D9 b; X( N
The harmonics spectrum of a delicately overloaded valve amplifier is completely
. G4 F) [ x: |- {* ]3 u different from an overloaded transistor stage.( I& z5 |3 N6 v! @, f! u
The “Gain” control adjusts a gentle overload while the odd-harmonics content
3 Q% J3 P: D; ` can be adjusted with the “Clip” control.2 C$ A4 a) w6 m
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24) T/ f5 Q4 _& ?! h- K
dBu FS.2 a; f, p& P1 n' U C9 A
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
* M: F {* m+ e: d% h n [. f desired channel.4 w: ^, t9 W8 y
The “VALVE” LED is on when the Valve Dignifier stage is active.
& j: {6 H- F3 b) d4 A# x[9] INSERT INSERT function.7 w% l: \, b. y; M! _- J
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
% q K5 O/ E! S! I$ o7 E the valve stage (display: “INS”); the Insert Return is directly fed to the Line; ]2 z3 J* S' c* W3 [0 G
and AES/EBU outputs.$ k8 C6 D" w! B4 b/ `
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
- J+ |7 W5 j6 y/ [; R) t5 Z the valve stage (display: “INS” and “PRE”); the Insert Return is fed via1 J% `; U6 Z( N: M
the valve dignifier stage to the Line and AES/EBU outputs.
, Z2 W O" Q) G, W) p, } Third pressure: INSERT OFF, the input signal is fed via the valve dignifier* C: g2 d7 J+ |# k$ R. B
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output0 ~: T) j. }) y- `# N% }
receives this signal; display: none).
; ?2 ~8 b+ E% {% u* R0 [ Insert Send and Insert Return are electronically balanced and equipped with
1 n Q+ S- ]5 B P XLR connectors.
+ p4 k: b" ^8 S, k B# j1 r5 |[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
' U6 ]2 M& m& {8 w( i( \ ADAT digital interfaces. Each input channel can be switched to one of the0 T# ~2 e( }0 g1 |7 |( E; a
channels 1...8 of the multichannel interface. If desired, also a mono mix is4 }' y% N1 e$ f; w* P ], u
possible by selecting the same output channel for both input channels.3 F) A$ Q& [9 c- J
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
8 _: g: V3 y h# b; B0 x8 f channel.
$ |5 r: e4 j- o! N Can be operated only if the input gain selector is in Mic position. The, w7 Q2 o. h- {0 p" |
setting remains stored when switching over to a line gain setting.
9 @# E2 _$ F, j* b8 U8 E[12] Activates the high pass filter on the microphone inputs of the desired channel.
9 S2 A% _* h) l( @2 W Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
& s0 V; {9 m b) n Can be operated only if the input gain selector is in Mic position. The+ G( \( S u' }
setting remains stored when switching over to a line gain setting.# ?' p3 L/ I/ X' `# R* R2 _8 }
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
, t/ S+ L) W% T! d p, U+ E6 @[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:/ g a6 |" ~' @( K' D
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with* W0 R. Z, H# d1 q n1 s- k
Noise Shaping (display: “16NS”) can be selected.$ t( e0 M; w) V& ? N1 y5 m
[15] SYNC Selects the synchronization source for the unit. Possible selections are:$ c: _$ _/ d% c$ O, y
INT 48 Internal quartz reference, 48 kHz
+ z7 Y6 Z: B1 i6 W' `, a INT 44 Internal quartz reference, 44.1 kHz, B/ \: q+ t1 @
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)7 O1 M& T5 x `6 ]
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
! X v5 E8 X6 ^" i7 w0 i9 r AUTO Selects sources automatically in the sequence AES-WCLK-INT7 v5 C) N' {) ~* Q' A, N6 E2 k. q
VAR Indication only, active if the external source frequency deviates from 48 or( v0 \3 g0 r* m
44.1 kHz for more than approx. ±3 %.
4 ?" [5 ?0 B6 p: n/ H% ?% r[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
. i8 e/ A7 z; ? either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.5 ]+ X3 O& U8 }7 j0 ]
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
9 O. [7 [6 ~4 U- K# d the danger of overloading the A/D converter with short signal peaks (if
. m Y0 h i* { X1 H$ t active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,- ~9 V+ L. ^, W2 V
allowing for approx. 6 dB reserve before hard clipping occurs
3 [5 F. U( a1 \ ' ~, ]/ f3 v2 x9 D
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