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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
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英文电子说明书3 S* s% v2 J8 P& x0 j
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory; M% j/ I& e9 Z6 x3 V# J9 ^. Y
default settings. The subsequent settings remain stored in a Flash EPROM1 n1 C E+ V, j# r, h9 P1 C) [
after switching the unit off (unit contains no battery).
( o6 a( {7 n( b5 T; E) |[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position/ L# u: g o9 x$ o& h& l1 Z
between microphone and line sensitivity setting ranges.. A. w' N8 g. Q3 E7 D6 _, z/ E* I
Mic: Range –40...+20 dBu# U6 H$ x' ~ e; N; R* d$ U# {
Line: Range +14 dBu, +24 dBu
! K1 o# r6 S4 |7 V# _[3] Fine Gain Potentiometer for fine input sensitivity setting.
, O& f" x4 R6 }9 X* P+ a) x Range of additional gain: 0...+15 dB. i0 b* j/ l4 A: [4 p
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents; D& R8 g6 L g: q+ M2 j* M: U
the dBu value of an analog input signal which causes a full-scale output of
' Q2 u+ s+ a7 N( J- {0 B the A/D converter.+ a! v z7 l4 ?, E/ [
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
) T% [5 g" i9 D/ m A5 w# u the peak level is therefore +16 dBu. The “Input dBu FS” rotary
5 @7 A# H* _* d5 X switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
. g8 J" b6 D, u2 t( Y) R3 z Gain” potentiometer [3] increases the gain by 8 dB.# n& M/ s5 i" A9 ^* Y+ m; D
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.! {8 J1 e1 t# b. C- S) G
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals) R! i; L f& s b$ \/ ~, `3 r! J* k8 u
have more body; percussive instruments are less aggressive.- E- h1 h2 h: l+ k
The group delay behaviour due to AC coupling of the stages is different in
) }8 e3 _4 a7 ^( Q5 ] tube amplifiers.
! L/ N. ^1 X- x( |: H4 j, ]3 m* [ The “Bass Warmth” control allows to select the frequency range! O5 W" k1 f. D
(10...200 Hz) within which the effect is active.% A, {8 M5 H, F2 L7 l1 a, \8 u
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments." ]: Z+ V5 I- [2 G$ P
Valve amps have a characteristic response, mid-frequency harmonic content" @6 A" ~, J+ M" B- R1 J- ]; ^
is emphasized.' x8 R( ~1 y: k" W {3 }- L: Z
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.( d; i) H7 I8 Z2 c$ Z: B% s8 S$ l
The harmonics spectrum of a delicately overloaded valve amplifier is completely. {8 i0 Q& s1 ^3 Z' K9 `! t' ]
different from an overloaded transistor stage.8 ], G; @0 z6 G' r$ i% s8 j: H
The “Gain” control adjusts a gentle overload while the odd-harmonics content
& Z( S5 l* i$ ?8 l+ d can be adjusted with the “Clip” control.
4 m- i8 z( `; P$ r* n9 j+ N[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
% ]6 D/ q9 a* T dBu FS.% Y$ A) u7 G- X8 |; g5 p$ c
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
0 f! \0 r) p( u0 x4 j* Y2 d desired channel.
( x( s: d. O5 [9 D& \4 x The “VALVE” LED is on when the Valve Dignifier stage is active.) W# S4 y( G1 j! c- E2 a5 V, t
[9] INSERT INSERT function.
9 G/ q3 C+ Y: Z" @7 \ First key pressure: INSERT POST VALVE, the Insert Send is tapped after
2 M8 b8 ?8 h$ [0 D U7 U the valve stage (display: “INS”); the Insert Return is directly fed to the Line
' P! W& q3 i/ {* Q and AES/EBU outputs.
. r" S) v3 ]) C; E Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
( z+ u8 Y7 m2 A) [0 } the valve stage (display: “INS” and “PRE”); the Insert Return is fed via; ^% X# K P# l- ^, L) i( z3 E
the valve dignifier stage to the Line and AES/EBU outputs.
+ v8 z; m/ J4 \# u% W- f Third pressure: INSERT OFF, the input signal is fed via the valve dignifier* b& J) A5 h8 {
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
5 ]' z: I; C8 y! R/ h9 M; W. _( U receives this signal; display: none).8 y8 L% o4 I/ D
Insert Send and Insert Return are electronically balanced and equipped with- P, R6 ]* R+ ], P7 \( R
XLR connectors.* r' H V4 C9 X/ i/ R; V
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or5 n, I; _, e9 h0 P, x
ADAT digital interfaces. Each input channel can be switched to one of the
8 u9 \; v+ _! t! h2 n: f0 y' G channels 1...8 of the multichannel interface. If desired, also a mono mix is
6 X9 U. y5 c, X0 C possible by selecting the same output channel for both input channels.) N% ^9 z! h7 }: f+ a8 T4 l* F
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
! l" s" b% f% T channel. s0 g U1 ? \: J2 O, L
Can be operated only if the input gain selector is in Mic position. The
8 i5 R/ E* y5 K setting remains stored when switching over to a line gain setting.
7 d8 k' H1 H5 z. ^* u3 _7 F% |[12] Activates the high pass filter on the microphone inputs of the desired channel.8 X' J; j# c% Y1 J# |2 h2 R& k
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
+ L8 _& i+ f9 R# s& G) q Can be operated only if the input gain selector is in Mic position. The
3 Q# d# R B; L& q& i$ Y7 |9 | setting remains stored when switching over to a line gain setting. K3 f! Y {9 j0 ]( I. p
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
z' `- l9 L) Y6 |[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
2 k: A. X; Z2 `( l7 R6 s" K “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with: B0 h# _1 n+ J* _5 S; U1 w( X
Noise Shaping (display: “16NS”) can be selected.
: H1 C Z( z6 t9 N0 ?) c3 W) N6 ~. i( \* F[15] SYNC Selects the synchronization source for the unit. Possible selections are:" C3 Q2 w$ T6 F& x3 L) C5 O6 a8 o8 d
INT 48 Internal quartz reference, 48 kHz
* M" u9 O6 j, D2 _$ c INT 44 Internal quartz reference, 44.1 kHz
6 K4 E, B) A) O& {5 u WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
5 h$ i; n I, \& A AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)$ Q C) v% h: c6 F
AUTO Selects sources automatically in the sequence AES-WCLK-INT/ O- J8 @4 j% ^- N1 l
VAR Indication only, active if the external source frequency deviates from 48 or8 u$ k3 _. m4 l& z$ ]2 @8 K
44.1 kHz for more than approx. ±3 %.' N% T3 U4 S G7 f
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
# n. ]6 U0 l: ~) A either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
8 ~! }. ?! L) X' S: g5 o0 F: V3 S[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
3 ?: p+ F4 a1 H the danger of overloading the A/D converter with short signal peaks (if; C7 [$ r: m" `8 A
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
6 i) R3 D5 { w7 M allowing for approx. 6 dB reserve before hard clipping occurs' f6 b7 G" |! v0 m, B
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