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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
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英文电子说明书. N# ]) l/ z3 d/ G. ]2 J
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory, ] H" M4 v+ E: K
default settings. The subsequent settings remain stored in a Flash EPROM0 d7 I+ S ~, d' `, ]" J9 `/ v% t
after switching the unit off (unit contains no battery).
, Y4 l; r0 Z5 V- {[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
% ]& d$ x6 Z8 y) j5 V between microphone and line sensitivity setting ranges.) b/ j9 t7 H; D! G- E
Mic: Range –40...+20 dBu
7 T7 v; |# @2 w$ N4 H# V1 c# q) w, G7 K Line: Range +14 dBu, +24 dBu& k) a5 G5 V/ N
[3] Fine Gain Potentiometer for fine input sensitivity setting.
, X& y& j' L4 V! W( h& }, C Range of additional gain: 0...+15 dB.
7 a' K3 Q- o1 s. Q Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
: [$ p' F9 I% s the dBu value of an analog input signal which causes a full-scale output of0 j) Z! ~8 a7 T( ^5 M/ l
the A/D converter.9 F8 f) X% ~/ U2 }5 V6 w( \
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;. z- X4 R* x$ {
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
5 c) u7 @7 J ]9 s3 H* j switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine3 l6 \( |/ z- `
Gain” potentiometer [3] increases the gain by 8 dB. W7 _- a" T. s; Q" @; y+ }
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
7 n: ?0 P" Q$ u5 L$ b; h[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals2 I" X: I+ v' Q
have more body; percussive instruments are less aggressive.( {' x n3 _# R4 O0 w
The group delay behaviour due to AC coupling of the stages is different in' q3 B1 h$ e, k2 L8 Z) X9 l, F
tube amplifiers.
0 n9 W! e( ^0 K6 [1 s The “Bass Warmth” control allows to select the frequency range3 K0 K" Q+ I6 o) T3 e
(10...200 Hz) within which the effect is active.
( z: ~' N& c' a- [; b% R[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.- U- j- I6 f2 x+ Z( a0 ~ q P' L
Valve amps have a characteristic response, mid-frequency harmonic content
, N) R, X2 i( `% | is emphasized.
+ H: z/ x! a5 _[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
; `3 A2 d( o* X7 a9 m The harmonics spectrum of a delicately overloaded valve amplifier is completely. s* Y) S( R0 w
different from an overloaded transistor stage.
/ ?/ _& k# P$ G' l }( W; U5 A The “Gain” control adjusts a gentle overload while the odd-harmonics content# u$ U' `/ [2 Q# H. X. Q
can be adjusted with the “Clip” control.
; I$ }7 U, i# m( i, A[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
* w" d0 W7 c, V" I" U) M ^" b dBu FS.; B2 m: a( o$ H0 u
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
' p+ X- a: m- L/ ~ desired channel.2 |# a7 _9 @' B8 y; l: x0 G
The “VALVE” LED is on when the Valve Dignifier stage is active.
. Z$ o" d3 D' Y& {$ c[9] INSERT INSERT function.
! Q7 B8 v, {, Y& G6 m; X First key pressure: INSERT POST VALVE, the Insert Send is tapped after+ ~# O3 |( M, I+ `
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
& ? S$ g* O2 V* Z% x& g6 @ and AES/EBU outputs.3 s+ s1 D8 W d/ l/ |# ~
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before" u$ N: c% H7 D$ K
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 j- k# U6 p4 m) u" Q the valve dignifier stage to the Line and AES/EBU outputs.
1 K( F' a2 Y* U! D: B* w/ r Third pressure: INSERT OFF, the input signal is fed via the valve dignifier/ Q, [; p7 b3 T A- v v. i* @
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output$ Y+ V: L' T$ T- O, E, l) A7 S
receives this signal; display: none).
+ T* b4 S5 `3 c/ Z Insert Send and Insert Return are electronically balanced and equipped with/ Y2 i( C I1 r) G; `$ }5 G5 y
XLR connectors.
( V' I9 A7 q n' a, }[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or5 D+ x0 } ~2 a
ADAT digital interfaces. Each input channel can be switched to one of the
) | B! X' N" H* ?) A% r' X6 m4 v% p) c+ J channels 1...8 of the multichannel interface. If desired, also a mono mix is- x: W5 O F- v( [5 @( W$ H
possible by selecting the same output channel for both input channels.
% \. a Z4 G" q6 F3 D# u& F1 Y[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone5 Y/ v& Q8 W3 g8 Q6 {- v+ I% e
channel.% m6 b2 U* w* b* c
Can be operated only if the input gain selector is in Mic position. The
% _9 k3 @7 E# v' R' U7 ~ setting remains stored when switching over to a line gain setting.% o! n! I4 Q6 a5 F
[12] Activates the high pass filter on the microphone inputs of the desired channel.2 _0 h; n+ N3 [2 `+ o+ e
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.' l" G2 N% J+ r$ F+ z: K
Can be operated only if the input gain selector is in Mic position. The& y, M; p6 W' a' a
setting remains stored when switching over to a line gain setting.8 f( P( a/ O9 p5 s0 G; A* z9 I* H2 ^
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.( n" X K& s- ]6 T6 c$ v
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
% |# A) o( g- R' X “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with7 y; M a9 n" Q% V, E, L+ S' B
Noise Shaping (display: “16NS”) can be selected.6 b( g/ D! s' P* r8 n9 `, A
[15] SYNC Selects the synchronization source for the unit. Possible selections are:% |' `# m' C& ]
INT 48 Internal quartz reference, 48 kHz* {! m$ H+ A7 A
INT 44 Internal quartz reference, 44.1 kHz
Q4 K) e5 h" }0 J! ]4 ?/ @6 D WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
$ G, F* X1 n" u: I2 C9 R l AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
' `5 @( N8 ]( z& ~: a AUTO Selects sources automatically in the sequence AES-WCLK-INT
- ~; T8 I4 b6 c7 \: L3 r VAR Indication only, active if the external source frequency deviates from 48 or
- w4 |: M8 u0 H& x+ `. ~% h 44.1 kHz for more than approx. ±3 %.
) J$ Y$ s2 v- t. ?/ A1 H[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
* B6 D% L( v0 R9 c9 ` either permanently (display: “HOLD”), or with automatic reset after approx. 2 s., g2 Y5 z) k* ?7 O: L3 p9 N e q2 f" e% w
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
: [& m3 k- B7 Y0 e9 _ the danger of overloading the A/D converter with short signal peaks (if5 \* K9 Q( U2 j+ V
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,8 S5 D: m% o0 f# N+ x
allowing for approx. 6 dB reserve before hard clipping occurs
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