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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 " i# U/ u' b! p* z( D* l ?5 L$ p- h
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英文电子说明书
' ~9 H9 A9 R$ _[1] POWER Switches the unit on or off. The unit is ready to operate with the factory' f8 |0 C8 D" J
default settings. The subsequent settings remain stored in a Flash EPROM
; D' [5 e3 P: z+ V after switching the unit off (unit contains no battery).4 S7 {) L4 H; l2 {
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
) C* e4 `! ~# Z" M6 D4 O between microphone and line sensitivity setting ranges.
" g- A- R7 i' }! o Mic: Range –40...+20 dBu
8 a& d5 E8 @" ~$ w# i: g, S Line: Range +14 dBu, +24 dBu
7 @. B' q4 Q! |[3] Fine Gain Potentiometer for fine input sensitivity setting./ K3 K" l, z, l0 {* C. i7 J
Range of additional gain: 0...+15 dB.
8 j, r; x$ u# w5 q# H, X/ ] Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
: h) `# v7 _/ H5 m the dBu value of an analog input signal which causes a full-scale output of
0 c, D: I+ l7 n9 t the A/D converter." T% e L9 i* E: Q/ u# q+ x
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
; A! X u9 U( t5 B' {- U the peak level is therefore +16 dBu. The “Input dBu FS” rotary$ X; k1 i- X, l% O, q$ {
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine0 z/ c$ m1 Y! G& V6 f0 n
Gain” potentiometer [3] increases the gain by 8 dB.
$ b# T$ V M. G$ Z( O( J[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.2 e6 c& j, B s) I4 v' W
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
0 d% b: }$ X& d* q) ?2 W# Y. W6 \) d have more body; percussive instruments are less aggressive.
$ A8 F ]$ B# Z' k# S7 b The group delay behaviour due to AC coupling of the stages is different in
" a* y" Q" T: K tube amplifiers./ Y* v4 t; y* Q# h' {. Z8 `
The “Bass Warmth” control allows to select the frequency range/ x6 D8 ], _3 |1 L. L6 {+ C
(10...200 Hz) within which the effect is active.
7 J. O+ w. ]( X- p# ^/ s[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
7 q, q8 ~3 [+ V7 K8 s" n Valve amps have a characteristic response, mid-frequency harmonic content8 ~6 Z( I& {( [! h# J
is emphasized.5 a0 S9 I( w& M' j9 \
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
5 K" w6 ^ k* U8 |: v' ?: S The harmonics spectrum of a delicately overloaded valve amplifier is completely6 z1 b6 s& b( `1 [
different from an overloaded transistor stage.0 L- l) z2 F- O) O: a
The “Gain” control adjusts a gentle overload while the odd-harmonics content
* W, @) P; f4 S* W. {2 @/ ?: H2 @) M can be adjusted with the “Clip” control.+ v5 p) q. h6 K9 M( G d. t) `
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...241 O7 ?3 i1 U$ h" l
dBu FS.
& u5 E& O, c' Q! @9 W: u7 q[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
% b6 C2 w7 T$ c desired channel.5 G; | P w- m
The “VALVE” LED is on when the Valve Dignifier stage is active.
( l- H) R. Q+ S3 t[9] INSERT INSERT function.
8 D; w. Q+ \. ~% J% ] First key pressure: INSERT POST VALVE, the Insert Send is tapped after
& w1 J% q# P5 g5 q1 G ^ the valve stage (display: “INS”); the Insert Return is directly fed to the Line
% z; \ u1 X3 Q0 R, A and AES/EBU outputs., i# I; `* T; \5 Q0 G
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
! O# Q4 K, I7 b9 D. l! D1 t the valve stage (display: “INS” and “PRE”); the Insert Return is fed via/ ~1 Q6 j3 M% V6 W- @) ]; F" C
the valve dignifier stage to the Line and AES/EBU outputs.
; c! O! t& H( u- [; q- t5 X- f: ~9 K Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
8 T$ S/ t5 i! w3 m6 j. R' S stage (if active) to the Line and AES/EBU outputs (also the Insert Send output; c( g( U$ Z- P5 f# T' X: q
receives this signal; display: none).
- P/ Z7 t, H, g% J: a* Y7 A Insert Send and Insert Return are electronically balanced and equipped with
6 R" o- b( N& r XLR connectors.& Y0 |7 f- g% e2 R0 ]% F
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or, @% p5 b. b, A5 G7 I$ X. i, n
ADAT digital interfaces. Each input channel can be switched to one of the
k: `3 ^3 {7 }3 g% e' s3 y channels 1...8 of the multichannel interface. If desired, also a mono mix is: p& V! r& ]; U9 T$ G
possible by selecting the same output channel for both input channels.
& x8 p* |9 H* ?5 j+ F[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone U5 j; m7 ?% T" O
channel.) W0 l/ ]. s( D# X
Can be operated only if the input gain selector is in Mic position. The6 `* ]# E8 d$ V/ J# m
setting remains stored when switching over to a line gain setting.+ [0 I8 e2 ~7 Y* j o5 f) t
[12] Activates the high pass filter on the microphone inputs of the desired channel.
4 H4 N% O, r4 k) S8 x& h' G Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.# I) [2 Q. f) E5 K9 p- n
Can be operated only if the input gain selector is in Mic position. The
2 f! H! _0 j( Z$ j0 ? setting remains stored when switching over to a line gain setting., h6 g9 h/ ?$ j6 w; T
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
, ?2 a4 N3 g. q3 d[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
& l" Z7 h: _) o “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
3 ]4 @" m& c' j) h Noise Shaping (display: “16NS”) can be selected.
: C: f- @ N6 X: C[15] SYNC Selects the synchronization source for the unit. Possible selections are:
: L/ @8 G* r2 w, ` INT 48 Internal quartz reference, 48 kHz. j1 G. z, C, q& e
INT 44 Internal quartz reference, 44.1 kHz7 x: q9 V" b. R/ M
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
; w: ~5 o! K, n! P AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)* G! b0 ~+ T0 T9 \) {: q9 v" V
AUTO Selects sources automatically in the sequence AES-WCLK-INT
+ ^, U# m* |2 M8 @5 }. o VAR Indication only, active if the external source frequency deviates from 48 or- d# F4 G! i2 |5 e
44.1 kHz for more than approx. ±3 %.4 b, e. k6 `/ @/ P. ^, ?6 \. m
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
% O: w7 c% J9 q l either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
# ~3 K- @2 t5 `3 G( ?9 ]4 O[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce. Q2 G9 b! h, G, Z6 A4 ]0 x' S
the danger of overloading the A/D converter with short signal peaks (if
7 N ]+ }: A( N3 ` active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,8 [$ J: l; E6 I6 X" y/ Y
allowing for approx. 6 dB reserve before hard clipping occurs9 ^, a7 }4 O3 Y/ }, d) R% x
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