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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 , w) _- f, q) b( N' m7 t
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英文电子说明书
6 V u j1 O: `' J3 d[1] POWER Switches the unit on or off. The unit is ready to operate with the factory; C% |$ G' L" j
default settings. The subsequent settings remain stored in a Flash EPROM/ D9 w" b2 v& R8 F3 K4 }6 k. o
after switching the unit off (unit contains no battery).
' B j; z5 P2 q[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position+ C, O# M4 h0 f4 K \
between microphone and line sensitivity setting ranges.
! W8 y) W' F: L9 ]% Z; i( i! n Mic: Range –40...+20 dBu' f! Y) ?3 x. Y# d2 I0 E1 G- k
Line: Range +14 dBu, +24 dBu
9 D C1 Y# d6 Z" k/ W; k[3] Fine Gain Potentiometer for fine input sensitivity setting.
' x, R8 w6 y6 J4 ~) o; o Range of additional gain: 0...+15 dB.
: i8 Y1 q' _; C: U6 q Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents# W9 m! p5 _3 q) L
the dBu value of an analog input signal which causes a full-scale output of
# t/ d3 @* J) [& {+ T7 S the A/D converter.
2 @$ `2 f' N) S5 L" P( C/ H Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
0 H O/ @. y2 d the peak level is therefore +16 dBu. The “Input dBu FS” rotary
7 p# m, o. M. X/ ? switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine) Y/ ]$ n/ Q. f- m2 g
Gain” potentiometer [3] increases the gain by 8 dB.7 T6 v6 o( Q1 l
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.; l b% H o# X" O# L! q+ }1 O; L
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals" Y+ Q! Y5 n2 v, w0 G
have more body; percussive instruments are less aggressive.
3 W' z9 W7 l/ g" w2 d* f4 ~3 n The group delay behaviour due to AC coupling of the stages is different in% z& J, I6 J- ?1 f9 p
tube amplifiers.
' b3 {8 i/ h/ L The “Bass Warmth” control allows to select the frequency range
* C% f9 ]. Q. k% P3 V; K# r! \' l (10...200 Hz) within which the effect is active.
6 J3 T# b$ V" t# ]4 z[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.: P" t- v# K4 O
Valve amps have a characteristic response, mid-frequency harmonic content
3 p2 |1 ~# _ r D is emphasized., c8 S# v6 Z/ u! y5 [; u5 k
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.; q0 q( Y( R9 J
The harmonics spectrum of a delicately overloaded valve amplifier is completely3 k* H. C/ n# U" {$ ~( E
different from an overloaded transistor stage.
- m+ N2 X" c3 K1 S9 p+ [ The “Gain” control adjusts a gentle overload while the odd-harmonics content+ T+ C, ]% C6 X, Y$ K3 P+ N
can be adjusted with the “Clip” control.1 P0 S$ y5 j9 V5 Z9 u% J* Y9 t5 k
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24) @$ a$ [6 _- \9 i) {0 `7 e% v
dBu FS.$ V8 f, ]) c7 `% O7 ^8 \4 Q5 l0 d
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
) {% J9 y- R+ e2 ]0 P, ]- x ]2 |. G desired channel.3 g5 H) W& q& J. _- O
The “VALVE” LED is on when the Valve Dignifier stage is active.
9 T6 m @/ a$ J5 [& z4 o[9] INSERT INSERT function.
: t8 L) W! \+ t7 U5 Q5 R First key pressure: INSERT POST VALVE, the Insert Send is tapped after
1 e5 q8 f! W# ~* r the valve stage (display: “INS”); the Insert Return is directly fed to the Line
0 k7 i( W. D, @" S0 L5 C$ T and AES/EBU outputs.0 @* O0 I* z* ~! F; D# S( M' \
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before c$ `# I6 _0 m; R
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via& Y- p& F. F* g7 p t
the valve dignifier stage to the Line and AES/EBU outputs.2 d7 P R" q3 n
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier' x5 x4 J4 z* j$ v) _: v! ?
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
+ e* ?6 k( M6 j2 ]" m receives this signal; display: none).
/ I2 s1 m# W$ w, p; H Insert Send and Insert Return are electronically balanced and equipped with* i9 K: ], ~- W! r: Q# n; E4 x, q
XLR connectors.
; \# y* G. W% N; O/ Q$ f, y[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
1 L4 K$ a4 T/ L& i) J# W8 ] ADAT digital interfaces. Each input channel can be switched to one of the* }" V$ |/ x# i( A' y9 V
channels 1...8 of the multichannel interface. If desired, also a mono mix is! X" }2 p& p7 U. _
possible by selecting the same output channel for both input channels.9 o$ g8 [9 [: v3 y. t/ S$ t6 d/ q
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
" l/ u# i# Z! G6 D# h i channel.- w3 l8 I8 S/ u( |! C. d
Can be operated only if the input gain selector is in Mic position. The) D) R( H( w2 n# u3 T r; e# B6 L
setting remains stored when switching over to a line gain setting.: s& s& d" g# C* ^6 y0 h
[12] Activates the high pass filter on the microphone inputs of the desired channel.' q+ @& o$ B9 R# [
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.& t) ]2 x0 V6 d9 h& E+ h& k1 v
Can be operated only if the input gain selector is in Mic position. The1 a( ~# {/ o* s/ `: E( x" D
setting remains stored when switching over to a line gain setting.
+ s( f7 ?3 b! z! c6 l" C) b8 ][13] Ø Toggle key to activate the phase reverse switch of the desired channel.
1 \) K' q8 W1 h, R[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:0 J/ S5 w" I5 E5 j) g% o: E w
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with. [2 D8 P/ B$ l# f( Z" u, `1 o
Noise Shaping (display: “16NS”) can be selected.2 I- [+ R2 H9 r- p+ d
[15] SYNC Selects the synchronization source for the unit. Possible selections are:* R. S, D! {1 T$ F9 [8 U4 U" ^$ ?
INT 48 Internal quartz reference, 48 kHz: C5 Y. z' j$ O5 c2 n5 c7 C
INT 44 Internal quartz reference, 44.1 kHz& k8 J5 L1 t* _. u, y
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
/ w1 N/ J: U7 R% C/ E AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( e8 s* Y8 A4 E; Z+ ]4 z
AUTO Selects sources automatically in the sequence AES-WCLK-INT
4 J& _& e: B' _/ ?2 t4 J- z VAR Indication only, active if the external source frequency deviates from 48 or0 j1 C8 v9 C* ^# ]$ a2 j
44.1 kHz for more than approx. ±3 %.
% E' L1 D R" L1 ]. ?( {2 h( P[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
, ]( |! [* I+ z H0 x0 |" O either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.1 t" p9 _6 T/ G$ E2 [7 M
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce/ w& A3 z' q: G5 ~6 k* h
the danger of overloading the A/D converter with short signal peaks (if
" x$ [9 p$ F k* `% X- x" @1 K* W active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
4 m# h K3 y; G1 D allowing for approx. 6 dB reserve before hard clipping occurs
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