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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 3 {) ]8 f! c: G, E# T
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* W5 Q# j+ l( l英文电子说明书' q' H( r# O3 T, @4 ~
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
$ E$ \# |: ^9 |/ [, U default settings. The subsequent settings remain stored in a Flash EPROM9 d( B' a7 _6 L- \" ^7 l
after switching the unit off (unit contains no battery).
2 u7 `9 D1 W4 o+ i- P' Y[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
# y8 J2 t. i, h- x' A2 o( Q between microphone and line sensitivity setting ranges.
% b Z/ j! G/ b" V8 c4 S! G# O Mic: Range –40...+20 dBu
V; L5 o! L6 w8 P/ J6 \. N( r( h0 z Line: Range +14 dBu, +24 dBu4 h+ D% E- |9 {0 x i# l0 i
[3] Fine Gain Potentiometer for fine input sensitivity setting.6 I" F8 ? x& n' D: K
Range of additional gain: 0...+15 dB.
7 N& G7 |- \9 o8 {& f4 G Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents" e; p+ Q7 S D" W8 \* h% T) o
the dBu value of an analog input signal which causes a full-scale output of5 b1 \# \/ J2 F. A- [- @
the A/D converter.
! R, v" y8 l! H Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;0 o) i d+ V5 V* I8 _1 M
the peak level is therefore +16 dBu. The “Input dBu FS” rotary( d; d u% ` i4 U
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
2 s8 H1 T) S1 y8 z. `+ u) Q Gain” potentiometer [3] increases the gain by 8 dB., Z" i5 [" `% v; a' O) }* J
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.8 q$ C& r# K/ C: p5 ]4 I; g0 |+ B
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals6 w4 V1 d3 p: C2 o* }
have more body; percussive instruments are less aggressive.
+ n* L7 x) C, ?6 u* ~$ \ The group delay behaviour due to AC coupling of the stages is different in
9 E9 [ ]- T, u' H) e/ f' f" s tube amplifiers.5 U1 t6 H2 j' ^! H9 r
The “Bass Warmth” control allows to select the frequency range
2 B! s- [8 n( y; _. R (10...200 Hz) within which the effect is active.% G. q2 j9 ~9 N$ J1 T
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
( z) i9 d/ [, M7 A0 ? Valve amps have a characteristic response, mid-frequency harmonic content
+ z) s" j& u+ U: v7 ~" v6 U is emphasized.7 |. y; ]& F% ~: K
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
5 y3 l( y# L1 A$ b& s The harmonics spectrum of a delicately overloaded valve amplifier is completely+ M' e8 t# n- d/ R
different from an overloaded transistor stage.6 n# e2 |* n+ L+ g2 E
The “Gain” control adjusts a gentle overload while the odd-harmonics content' Z, _# F! d5 E
can be adjusted with the “Clip” control.
4 B& L6 A2 Y+ \, }# Y[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
! ~+ Y; U. E. x' ], l dBu FS.
. Q. H% k" U) o) L[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
. Z4 J3 o$ g) t# U7 J+ {% q desired channel.) O, R# O& ?9 E' P
The “VALVE” LED is on when the Valve Dignifier stage is active.
/ P5 W# e; C% B0 S% T# @9 V[9] INSERT INSERT function.
- V# C3 m1 V% [4 X First key pressure: INSERT POST VALVE, the Insert Send is tapped after# E2 w+ U, v( B3 G8 u3 H' z) Z
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
# D3 j* R! |; `" v! L8 [9 A. k and AES/EBU outputs.+ N$ h, k- \9 N5 C. n+ S" U9 ]+ S
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before" T5 @9 C0 q! [( V: W
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
, c+ Z b, {% n, h2 P6 U% u0 M the valve dignifier stage to the Line and AES/EBU outputs.7 f0 a2 r" l/ Q* i
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
% o( E r7 ~/ V9 J stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
4 C5 c/ c; [: o/ e- Y receives this signal; display: none).
9 m. Q/ E$ s: F' `, E3 q Insert Send and Insert Return are electronically balanced and equipped with2 {% z" u) g2 i5 A$ Q0 [
XLR connectors. W! V8 |. g0 b
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or0 a9 P+ ]" \+ L0 d, t0 N4 [) g
ADAT digital interfaces. Each input channel can be switched to one of the, D) `* S% [. l" F. ?" N
channels 1...8 of the multichannel interface. If desired, also a mono mix is
6 H, i7 [2 q0 N* R7 a possible by selecting the same output channel for both input channels.$ G! P) O: h; |7 m. Q" p7 d
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone- X% x b% c J9 G3 t2 f; T! f
channel.
" u. l& [+ P2 y! r Can be operated only if the input gain selector is in Mic position. The, s' v1 n, t" v2 y; J* X5 S
setting remains stored when switching over to a line gain setting.1 f" l& v7 C, @/ U+ ]( G
[12] Activates the high pass filter on the microphone inputs of the desired channel.: N. {) P" a0 @) c" P% y1 F: x
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
$ W5 E% o. U9 L# Y Can be operated only if the input gain selector is in Mic position. The& S) }& X X# g8 L$ Q, o8 `
setting remains stored when switching over to a line gain setting.- L4 z1 G/ y; U# w) v
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
e3 F( F) Y' P& ], s3 ?[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
6 d8 e% c9 M: L! j1 [ o! q2 a: t& g “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
& s( H% L- Y+ a7 E9 O' o3 k1 d- D! w% S Noise Shaping (display: “16NS”) can be selected.
& c4 p d) N1 D[15] SYNC Selects the synchronization source for the unit. Possible selections are:- a4 \! M7 z8 r' o! q
INT 48 Internal quartz reference, 48 kHz
! X; s- O% o/ U% D+ N INT 44 Internal quartz reference, 44.1 kHz# t& X* @ C' ]9 _* @$ a. T4 ]6 f
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
2 ~6 h" |6 A% P" w0 z' [9 w; b AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
) F0 R7 Y9 x' O7 o AUTO Selects sources automatically in the sequence AES-WCLK-INT9 G$ p6 H! J4 n% t5 [( d
VAR Indication only, active if the external source frequency deviates from 48 or$ `, D [% ?2 g- D2 C% _
44.1 kHz for more than approx. ±3 %.
/ k+ @7 m0 _( k5 O0 \[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –3 C" p7 c) B/ Q; M
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
3 x% D: G2 j, i# p[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce$ B9 I2 V1 x/ L; P3 B
the danger of overloading the A/D converter with short signal peaks (if/ d# E* ~) b* n; x5 ?& Z
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
7 W, G2 E4 q0 `" q allowing for approx. 6 dB reserve before hard clipping occurs' @0 @" H! ?; O9 I- o% q
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