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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5 w9 x! R3 \% C. o u4 P
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory# e3 w+ m% T# \2 x
default settings. The subsequent settings remain stored in a Flash EPROM
+ H# f7 r) [& ^ @ after switching the unit off (unit contains no battery).) a/ S3 _" C K
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
% v N6 u4 C$ \ between microphone and line sensitivity setting ranges.
9 k; m& _' x7 R' F4 J& w; Y+ q; ^# q Mic: Range –40...+20 dBu( B E- C1 D# U% @; k$ i
Line: Range +14 dBu, +24 dBu
" z% X$ y" n4 n[3] Fine Gain Potentiometer for fine input sensitivity setting.% P6 L. L# ^4 J
Range of additional gain: 0...+15 dB.7 |+ y3 W. S+ {8 Y$ V+ i4 ]: D
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
2 v: Q+ A, u1 K) {# b+ n the dBu value of an analog input signal which causes a full-scale output of8 I) M, L. ^( w% O
the A/D converter.
* |0 ?* j) J- |6 ^6 w8 J- B Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;: m5 z3 ^. D5 D0 T9 m
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
# q1 _/ N) H8 T# G1 t2 W, C switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine2 v! I( [( k0 c9 ?+ [- Y6 W, M1 ?* g
Gain” potentiometer [3] increases the gain by 8 dB.6 j& o; s6 @$ d' i
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
. K; z& D& W8 I p; p0 q- y# w' |7 E: V[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals6 V) R6 A. H: g6 \/ X. _- f
have more body; percussive instruments are less aggressive.
# _2 P- e' Y3 L8 b) B8 N The group delay behaviour due to AC coupling of the stages is different in
* I, Q" B# F/ n3 { tube amplifiers.
$ T7 ~! B1 J. }0 {8 t The “Bass Warmth” control allows to select the frequency range+ W4 ~! q& f! `$ J: K3 [
(10...200 Hz) within which the effect is active.
2 D" C$ o/ Y& N" G& q4 P6 C[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
2 o; a- z! s$ G4 o Valve amps have a characteristic response, mid-frequency harmonic content& M; V2 N5 v% h2 k4 Z2 `
is emphasized.! l+ E, M6 p, J, Y% i
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer." V5 Q" Y5 D/ q6 o+ v1 i
The harmonics spectrum of a delicately overloaded valve amplifier is completely, T( l" u9 {* B9 N2 X
different from an overloaded transistor stage.
5 ?+ P& y* f: ?6 Y7 G The “Gain” control adjusts a gentle overload while the odd-harmonics content' y. M6 S. q3 F F
can be adjusted with the “Clip” control.
; l6 |' {% Y6 E. N[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24; X# i' a* L: p" C' s
dBu FS.
/ E. q J- F! `! l[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the3 N: s$ a& j1 k, e1 P- [5 D3 R" C
desired channel.
5 P- C, M! Y+ j/ g. p; k The “VALVE” LED is on when the Valve Dignifier stage is active.
( r, j& U. b" p' ~2 E[9] INSERT INSERT function.
$ n; C$ W8 m0 N9 ?; n- y% f First key pressure: INSERT POST VALVE, the Insert Send is tapped after
1 r1 p/ c% J H; k5 T9 Q3 r the valve stage (display: “INS”); the Insert Return is directly fed to the Line
, ^: k+ g4 b5 Q and AES/EBU outputs.
( A- w A. k9 k- N/ j# _ Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
# W8 W% y; Q6 _" X) o2 | the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
* Z: ~* O m4 z2 J the valve dignifier stage to the Line and AES/EBU outputs.* q" [7 ]9 J7 c4 t* Y- u2 l4 n1 e
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
2 S* [4 \" o- N2 ?7 @6 N/ ~/ X stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
) g6 e% t4 }* @# p! N receives this signal; display: none).' W! w( \& w' r9 w# z+ E9 g
Insert Send and Insert Return are electronically balanced and equipped with
/ m) @5 z! b4 h. |( |1 m* M XLR connectors.
3 M$ @# f$ Z; R; B$ H/ P6 n[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or7 p4 m# u2 W( L1 x
ADAT digital interfaces. Each input channel can be switched to one of the, F0 Y* I. T# }( O6 z8 p
channels 1...8 of the multichannel interface. If desired, also a mono mix is
& j0 i" K8 Q% o. W3 K4 M possible by selecting the same output channel for both input channels.: Y% V' [2 q, s$ ]
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
9 m* P6 i1 |% G3 t channel.
; v: S! w. o1 f/ f2 S Can be operated only if the input gain selector is in Mic position. The( A3 A2 F5 j# a! C$ d5 @( m S$ T
setting remains stored when switching over to a line gain setting.8 i+ `# R6 f" B4 f: O1 y) u
[12] Activates the high pass filter on the microphone inputs of the desired channel.
+ n/ e0 Y( f8 F, I Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.% \) @+ a' G9 ?* H) G. V& \9 E. {
Can be operated only if the input gain selector is in Mic position. The
7 t' h9 o8 t0 t) f( ~* [ setting remains stored when switching over to a line gain setting.8 S) y2 |2 t; z1 n3 i3 T
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* r1 ]. u, B2 s5 V: _% W! {2 A
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:/ k; }+ I) b: d% U" \- i
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
( l, c/ c; J% [8 m5 [0 }/ u Noise Shaping (display: “16NS”) can be selected.4 G/ e+ S1 k/ ^' T( ^5 ]
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
/ b2 n1 g) ~$ e8 G INT 48 Internal quartz reference, 48 kHz, k; z6 }( I6 l8 t
INT 44 Internal quartz reference, 44.1 kHz
% n( q( x: L! s/ L1 z7 {4 P3 x. I. | WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
# x# U* b5 S: e$ F$ K B6 A AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
7 w2 f9 ]! V: g9 I AUTO Selects sources automatically in the sequence AES-WCLK-INT* x# @" Z$ k0 l: x& Q" N8 f7 s
VAR Indication only, active if the external source frequency deviates from 48 or
. S& K. y) a8 u8 r* o; _1 p- { 44.1 kHz for more than approx. ±3 %.
+ X9 c2 u8 f* ?, m- T, E) {9 H[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –8 o: F. \+ ]4 V- g1 ^( Y* @9 }
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
A. u \$ j# H3 i- r! K. e3 T[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
" Y" Q2 o% z1 N6 w/ K7 { the danger of overloading the A/D converter with short signal peaks (if
0 [0 k# g. I ?! r9 G+ V6 Y D active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
3 Q4 ?9 M4 I$ ~% g) p& i allowing for approx. 6 dB reserve before hard clipping occurs- k4 w D8 j W! P& k9 c
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