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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 ) M. U, T5 x- Q% i
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$ m4 D( f! n9 K w英文电子说明书2 ~4 a' X! [ P0 s
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
- d% ~- A& Q6 H, ?( ?: G8 y default settings. The subsequent settings remain stored in a Flash EPROM
' x* s! a( m. f after switching the unit off (unit contains no battery).4 A6 R; ]5 u$ Q: ?- T6 q$ A0 j) g
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position; G5 _; U8 h6 D) _% g; J. |
between microphone and line sensitivity setting ranges., }) g8 y+ m, d6 l8 r$ ~/ L
Mic: Range –40...+20 dBu' q* L' b; u9 p$ G! W, Y, A
Line: Range +14 dBu, +24 dBu
3 d; R" t' Y5 U6 _& i- w* a[3] Fine Gain Potentiometer for fine input sensitivity setting./ r. j" H" l, Y0 f3 M. W
Range of additional gain: 0...+15 dB.
) O" B3 O8 ]- U+ u Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
6 N' m8 p2 |, P: _7 ~2 ` the dBu value of an analog input signal which causes a full-scale output of
1 J4 {8 k& l& K3 U# q) H the A/D converter.
# f7 g, D* }* |$ \$ ` Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
( t+ v& q# y+ `; v- f, m$ g8 O the peak level is therefore +16 dBu. The “Input dBu FS” rotary
& W0 Q* J: R2 b) { ^ switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
2 @/ B! \/ T- |# Y+ x8 V Gain” potentiometer [3] increases the gain by 8 dB.
, j$ l3 K& O% n$ @4 K1 A$ o[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.1 x) h0 F9 {7 F/ W
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
, O" V, F- f6 |, f" J" A have more body; percussive instruments are less aggressive. x% X1 T" v+ `
The group delay behaviour due to AC coupling of the stages is different in
4 @$ a- m. {: x- N+ j3 [( O* ?9 _ tube amplifiers.# j- o' J, m6 t5 O0 @
The “Bass Warmth” control allows to select the frequency range
: I1 p' a. h' G% e (10...200 Hz) within which the effect is active. s% o# U/ j' h# T/ B6 _5 g" b
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.+ ~" h4 S$ f" R7 G0 X H5 g
Valve amps have a characteristic response, mid-frequency harmonic content
5 s+ H; r2 Z( o6 v/ P, t is emphasized.
- Y3 q0 i8 r/ |, ?[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
) D* [+ Q: ~7 T4 Y0 a3 Y5 C0 ~ The harmonics spectrum of a delicately overloaded valve amplifier is completely
, D8 B% C2 J+ k" |8 s/ F, f6 s different from an overloaded transistor stage.
4 U- e% S9 A, V C& ~& J! c The “Gain” control adjusts a gentle overload while the odd-harmonics content
) d9 y. `7 ]0 C2 [/ T7 g2 C can be adjusted with the “Clip” control.- i: ]/ g3 E/ z7 E
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
/ d& f( G6 X: O dBu FS.
# S+ Y) x- o. Q[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
5 r/ R# E* V1 }" m desired channel.' z9 \# ?/ `7 t" p
The “VALVE” LED is on when the Valve Dignifier stage is active.
q3 h! l2 W0 {0 A+ [: o[9] INSERT INSERT function.) A+ D/ c+ u! _/ m
First key pressure: INSERT POST VALVE, the Insert Send is tapped after9 V1 w( a9 o4 [$ Q4 a$ w* h8 k
the valve stage (display: “INS”); the Insert Return is directly fed to the Line) e! I+ e6 l1 ^5 h
and AES/EBU outputs.- K( A+ p' p0 `, W, S( W
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before' h0 M4 s# _! V1 a K3 B! p
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via6 ~" W1 }4 [6 {9 {7 \
the valve dignifier stage to the Line and AES/EBU outputs.' g1 ^0 _+ C' S$ V- B. j3 m
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
/ l# K* d8 p2 p8 V' F. z4 R# C stage (if active) to the Line and AES/EBU outputs (also the Insert Send output: Q5 O) f( @) b8 \' R) k" @
receives this signal; display: none).
% f: k' P: H- m1 b u Insert Send and Insert Return are electronically balanced and equipped with
7 w& [4 q# h% L; ?: R2 v XLR connectors.. P! c* U# _$ ?4 D. e3 [
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or- }$ q2 Z) g: j' T' |" y2 u
ADAT digital interfaces. Each input channel can be switched to one of the
( u; b, D; o7 f6 i channels 1...8 of the multichannel interface. If desired, also a mono mix is
; l' w# ? m1 Z; N; Y possible by selecting the same output channel for both input channels.
9 U9 v6 J0 s/ g: C" h% C[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone* H8 E/ h2 c% j) V T3 W- \: Z
channel.
3 H( _5 }0 w8 t9 E9 x% Y Can be operated only if the input gain selector is in Mic position. The
p& k3 n5 \3 u v( d k1 u8 @ setting remains stored when switching over to a line gain setting.
5 G: M7 q9 q& l9 V! l[12] Activates the high pass filter on the microphone inputs of the desired channel.( c1 u4 t" T4 T8 @1 n/ C% `* o3 x2 ]
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
, x4 ]( Q' O% A/ k8 r+ w T" K* y Can be operated only if the input gain selector is in Mic position. The) G8 M: T- F$ B; L: F; x6 J& g
setting remains stored when switching over to a line gain setting.
/ q+ Q7 A8 b& A+ K[13] Ø Toggle key to activate the phase reverse switch of the desired channel.) ]2 n4 \) R- |7 G% G
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
: D; l1 @% k" l8 u% m" E “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
/ _: X; ~3 a9 N9 m. o6 r Noise Shaping (display: “16NS”) can be selected./ }6 @- I# S* Q! q3 s U
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
1 M, H4 E8 H! P. X' g INT 48 Internal quartz reference, 48 kHz
# B( N0 K6 O* d4 p INT 44 Internal quartz reference, 44.1 kHz5 \+ o! u( A4 a) Q& |" s
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)# e7 _. |* j6 `& Y
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)# n8 Q; ^, z% X* ], E
AUTO Selects sources automatically in the sequence AES-WCLK-INT* c: K3 c! R2 O" {
VAR Indication only, active if the external source frequency deviates from 48 or$ c7 R- K* u) T5 v
44.1 kHz for more than approx. ±3 %.
7 E8 s7 e* S, P# _ \[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –) `# j9 J$ V" _
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.& f0 s) A) z! e ~" y" T+ Z
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce! ]6 \( B [; v# y( v* P4 J/ k
the danger of overloading the A/D converter with short signal peaks (if
S; e8 O' u+ M/ e w5 r active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,( p9 ]8 e: n: v( A' j
allowing for approx. 6 dB reserve before hard clipping occurs+ n* m6 u" A! @6 T' ]4 d) M& m. p B
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