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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 6 L5 h2 A# P+ e1 h& l3 X9 u
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英文电子说明书# I+ P: U M9 ^; B2 V* W8 O& V
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory4 Y7 l- X9 {9 S+ w
default settings. The subsequent settings remain stored in a Flash EPROM! Z2 h2 K3 \# k9 g
after switching the unit off (unit contains no battery).; i; }) A$ i1 W" c2 k. @! M8 u
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position3 q2 m: S) d3 H$ U/ r$ u5 |' V
between microphone and line sensitivity setting ranges. R9 w! H- j' S
Mic: Range –40...+20 dBu
# [/ R$ v3 A% s9 R1 n* ~ Line: Range +14 dBu, +24 dBu2 }- p) v% I3 H; d2 V4 U4 B$ y
[3] Fine Gain Potentiometer for fine input sensitivity setting.
5 w0 f4 [0 G, z. `- r Range of additional gain: 0...+15 dB.
4 `. P( Y d2 k. w( J Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents5 M8 l) \; W; h' P
the dBu value of an analog input signal which causes a full-scale output of5 q- ?0 m; l; {3 A+ K9 c
the A/D converter.& {7 y- L1 ?' y; [$ ~3 Z
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
4 W+ k1 p3 N6 Z. z! }) C the peak level is therefore +16 dBu. The “Input dBu FS” rotary
2 |1 c! f) i# e switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
`9 t- ^) K) [/ B% }# z" B) I: Q( J Gain” potentiometer [3] increases the gain by 8 dB.
; v7 R& a1 x6 p' h( V6 o[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.. w, c7 l" R' k0 [: e4 _' b$ ]
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals" g; Q: L) P% o3 k7 A5 O& w' Z
have more body; percussive instruments are less aggressive.! F& c3 p% Q( a9 u1 Y+ X( S2 x% a6 b
The group delay behaviour due to AC coupling of the stages is different in3 C- U' P, f* Z1 G2 L
tube amplifiers.1 `& P# X3 a( w% _# p4 x8 P$ h
The “Bass Warmth” control allows to select the frequency range
- B0 ^0 C5 F# k1 o; J2 u (10...200 Hz) within which the effect is active.$ m, L/ r/ k4 _, y
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments./ O$ q& p2 ^# A7 M9 @$ Z
Valve amps have a characteristic response, mid-frequency harmonic content9 l) E z) Q: q! d
is emphasized.
9 ^& q. M8 ]# z[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
7 A L, k) R+ u" z, v The harmonics spectrum of a delicately overloaded valve amplifier is completely
% h$ u) X/ D3 ~& U5 ]8 u1 Q. a different from an overloaded transistor stage.
' z3 Q' P8 x+ E" ]/ L6 ? The “Gain” control adjusts a gentle overload while the odd-harmonics content
! @/ t/ H& k F% q) G1 _- q2 s can be adjusted with the “Clip” control.
( ~5 \: ~8 v$ [$ s( S5 [[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
( b( f( X: u( B3 z- f9 Y dBu FS.
/ H/ \2 D: y# w- M' x[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the, g2 F. K0 ?0 L* o+ j0 a
desired channel.2 x3 j7 Y1 I1 K# v+ _
The “VALVE” LED is on when the Valve Dignifier stage is active.
4 X- \; m7 P5 X& p8 U: {3 { |[9] INSERT INSERT function.) x( X0 D$ W! U' J; g3 d9 ?' X
First key pressure: INSERT POST VALVE, the Insert Send is tapped after3 B; y) }1 ^2 J8 z( ]
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
$ w+ B$ {1 Z$ ]% n7 ` and AES/EBU outputs.
8 k( S- y' m: ^% }. Y' s Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before5 U( l6 j( j# G: X
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
: Q/ Y# E/ k. `8 l( } the valve dignifier stage to the Line and AES/EBU outputs.
) a; w1 g0 F5 P" x Third pressure: INSERT OFF, the input signal is fed via the valve dignifier! z3 X& L v8 N4 ~% v m9 a
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
9 ^8 k. A: c/ R6 j receives this signal; display: none).
9 r4 q+ y4 Z8 v4 Q/ } Insert Send and Insert Return are electronically balanced and equipped with
3 a8 ~& _0 k2 i3 t/ n0 m. b4 b XLR connectors.
5 z) e1 i9 {& }' ^" z( Y5 L' b[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
/ A* c. R% V' D ADAT digital interfaces. Each input channel can be switched to one of the
1 C9 M$ Q# P3 J7 m$ ^. q. |% m! g channels 1...8 of the multichannel interface. If desired, also a mono mix is
, @6 F l3 p! Q; f7 D possible by selecting the same output channel for both input channels.
4 \. a; B, ]! N2 M- _[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone6 J* w+ x% N( O# |8 R8 D8 o
channel.
* w; x9 U( K" o a Can be operated only if the input gain selector is in Mic position. The
2 s+ V9 d+ Z+ R$ P setting remains stored when switching over to a line gain setting.2 A+ L4 p5 ^+ `( g
[12] Activates the high pass filter on the microphone inputs of the desired channel.$ I5 |1 y2 l2 K8 V |7 L
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
: ^/ O8 e. I. ~( [ Can be operated only if the input gain selector is in Mic position. The0 d0 X# m6 H; Q* u3 ], U3 p
setting remains stored when switching over to a line gain setting.
! u' L( y! A$ M( a8 M! J[13] Ø Toggle key to activate the phase reverse switch of the desired channel.$ O! \, R7 k0 r# {* a8 W* O9 o& k0 z
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
. `1 x; T: `+ I9 @6 X; t “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
$ v* M: R% Z9 A Noise Shaping (display: “16NS”) can be selected.2 ~+ d% k6 w& r& D
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
- G9 \/ `8 M1 T" [: | INT 48 Internal quartz reference, 48 kHz
0 i! ]# y4 G9 V9 { INT 44 Internal quartz reference, 44.1 kHz1 F+ }) J* |. h$ Y) X( q
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
+ W" S1 S+ I7 k% [9 u" } AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized), B- R1 x, D2 R# K) {" o
AUTO Selects sources automatically in the sequence AES-WCLK-INT0 D. h1 a, f9 K& [
VAR Indication only, active if the external source frequency deviates from 48 or
) e7 t o. q8 u: W. y( F* R- t- p 44.1 kHz for more than approx. ±3 %.
8 C1 a* C& x B4 i! ^- J9 P[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
5 A6 O" V% J. I4 A- ^ either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
! S! s. o8 C9 u. A$ E[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
5 z/ z# ^0 V; J9 Z* J1 @% ^ the danger of overloading the A/D converter with short signal peaks (if
+ r9 O4 K/ k7 Z* H! E2 E active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,( q1 c. w0 @2 G8 i
allowing for approx. 6 dB reserve before hard clipping occurs
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