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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 / S4 m4 F4 b7 e( i) S% G3 P
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: \# u/ J4 ]6 D: V8 [英文电子说明书
2 l$ Y. ?: J6 G; R2 K[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
: q* ^, O0 |1 b default settings. The subsequent settings remain stored in a Flash EPROM
- H& s- {) M% J9 w1 i: _% K. A; x: x( @, s after switching the unit off (unit contains no battery).
8 X" _; t: Q, H, S8 T$ j( W[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
% S7 g- f( B! R9 e9 `! a between microphone and line sensitivity setting ranges.
! S" Z2 O. h. ^ Q Mic: Range –40...+20 dBu
. ] a9 v& _6 B3 P6 f4 `* J Line: Range +14 dBu, +24 dBu
0 i% b3 M% {2 n+ y# _' N# d8 E[3] Fine Gain Potentiometer for fine input sensitivity setting." U5 C8 n: {2 l- f ^( h1 z
Range of additional gain: 0...+15 dB.) |7 p P. B+ [; A" p* T/ j
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents4 t( w) ?$ X% P$ g" `9 U
the dBu value of an analog input signal which causes a full-scale output of2 r3 [2 d4 V/ F, S1 c
the A/D converter.
3 G- P# R, V+ G Y8 T Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
7 M# H! m8 g# a the peak level is therefore +16 dBu. The “Input dBu FS” rotary
- G& c9 s% K9 |; J switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine2 _9 W4 i7 M1 r
Gain” potentiometer [3] increases the gain by 8 dB.
% A5 t9 X" c& M' b3 f6 r1 r[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
2 z t* D0 t( { n0 l2 L3 F[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
) T! ^) M- }; |3 C have more body; percussive instruments are less aggressive.
/ f. y1 k6 w7 b8 u The group delay behaviour due to AC coupling of the stages is different in
- e2 N9 m% f9 t: C. P5 d( h tube amplifiers.5 o8 A/ s/ ^7 Z' {5 x
The “Bass Warmth” control allows to select the frequency range
* V, M# g/ F6 K( r( d2 I6 Y (10...200 Hz) within which the effect is active.
+ O4 a3 x/ n+ `* `[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
0 f c7 d; j/ e9 ] Valve amps have a characteristic response, mid-frequency harmonic content
+ S: V x, k7 U n is emphasized.
7 q" f# ~4 r2 ~) y3 }' s1 L2 w( B[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.) T9 P# p$ N6 X2 i) a
The harmonics spectrum of a delicately overloaded valve amplifier is completely" l9 f2 C0 Q7 _5 s: ?( U: Z
different from an overloaded transistor stage.
+ I D* m, k% X! e& M V6 O/ F9 U; ^ The “Gain” control adjusts a gentle overload while the odd-harmonics content
" g8 ^) o/ r6 Y% X. A8 a can be adjusted with the “Clip” control.
1 u2 o1 }2 b# n[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
/ P4 m& W) { \3 w; D9 \& c dBu FS.
# ?7 |, ~, i b2 [8 e[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
& g% b* f+ s# Q" ^, ]; m2 f7 f$ Y6 j desired channel., }5 y" U1 x: O F- x4 m3 A
The “VALVE” LED is on when the Valve Dignifier stage is active.& s1 M0 E8 O1 _4 E4 q- L
[9] INSERT INSERT function. H7 p0 @9 q0 K8 a2 B
First key pressure: INSERT POST VALVE, the Insert Send is tapped after+ e3 v @& I% m
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
- G9 x0 W9 r8 Z9 y9 c8 V5 S0 S and AES/EBU outputs.6 `4 o9 a; N& e
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before* i4 e2 Q. X) \$ L+ E; f5 a
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via0 ~7 _2 m I, j! F( Q
the valve dignifier stage to the Line and AES/EBU outputs.
8 s) x. w' N* q& b/ [* \+ I Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
% W3 c' T8 u& G9 c3 v! S5 ~5 F stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
( z# ]% x* \( v" } receives this signal; display: none).. H `' W( r- U; d
Insert Send and Insert Return are electronically balanced and equipped with
* w6 n# U7 @- K& Q XLR connectors.
+ v& m/ L, ^0 D[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or$ O8 L3 W. l2 Z" C. D
ADAT digital interfaces. Each input channel can be switched to one of the+ u% y" e9 G2 g" p c9 R
channels 1...8 of the multichannel interface. If desired, also a mono mix is) u7 Y) M2 N5 c" L$ \0 o, b
possible by selecting the same output channel for both input channels." @1 p4 w- A5 \9 E( A
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone0 L- _" u/ J1 }, X' n5 C2 S
channel.2 q! [! c, d7 y$ Z, q+ K
Can be operated only if the input gain selector is in Mic position. The
& |# T8 ?2 `3 I& n( u setting remains stored when switching over to a line gain setting.
/ V6 q+ e$ {; Q$ j- S0 A# |[12] Activates the high pass filter on the microphone inputs of the desired channel.2 [9 W: ?+ J1 L) G% K3 u
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
( r0 B: q! I0 T8 P& y& A; } Can be operated only if the input gain selector is in Mic position. The& O' y. m$ s* E7 l/ c. P
setting remains stored when switching over to a line gain setting.
& ^ z4 H2 f1 N! y[13] Ø Toggle key to activate the phase reverse switch of the desired channel.# T1 w% _! J2 g$ B) j- B% Z1 K |/ M3 n
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
& F! w7 ^( } i5 Y8 _) K+ D1 H- B) ] “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with6 Y3 b3 ^% f5 S% U* T9 x7 G7 f
Noise Shaping (display: “16NS”) can be selected.0 q4 u4 {' i c8 l' f3 ?
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
$ L. a) E- I' i! b* F) z INT 48 Internal quartz reference, 48 kHz
( Z* N; D8 V% c' Y INT 44 Internal quartz reference, 44.1 kHz
% q* ]6 s- G, F" Y" { WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
0 m2 L9 E" U: w9 k9 j7 R9 Q. ^ AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
* b; Y* a7 ~$ l7 }8 z1 ^: M# Z AUTO Selects sources automatically in the sequence AES-WCLK-INT, `' }9 k- }- l' Q, t g- d( C
VAR Indication only, active if the external source frequency deviates from 48 or
6 N, q# e! u6 ~# n) z& M: Z 44.1 kHz for more than approx. ±3 %.& {9 ?7 D+ L- l
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
* {7 ?' z* Z. ]8 F6 K either permanently (display: “HOLD”), or with automatic reset after approx. 2 s." Q5 E/ V. t, e P' E, T6 n/ `) j
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce0 \! E3 u2 D( @: G. v: ~0 p: l5 B
the danger of overloading the A/D converter with short signal peaks (if# U, y; K9 n8 F' p8 J0 v
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
0 `1 v# k" p$ z. \% m allowing for approx. 6 dB reserve before hard clipping occurs; r6 i7 f" s8 ?( f
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