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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 / f. ], B i( n) H. g
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英文电子说明书3 f$ b" L4 a) m% |
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory( _( c# [" j) i8 K F0 ?
default settings. The subsequent settings remain stored in a Flash EPROM
+ l3 F* t! V) Y) B. r after switching the unit off (unit contains no battery).: E/ O3 {# m3 _1 b/ @; C
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position& L- E9 j7 z; C% a
between microphone and line sensitivity setting ranges.2 K4 K( m& t' N1 y- F8 N/ b9 o S2 \/ @
Mic: Range –40...+20 dBu( I4 K& q9 q* H: u4 ^
Line: Range +14 dBu, +24 dBu
5 h& f; i- p& _[3] Fine Gain Potentiometer for fine input sensitivity setting.' b: V" m V" o' ` i5 ~
Range of additional gain: 0...+15 dB.( k( K( K( }, F( I7 X) b
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents! U A0 H8 X$ A# _7 L/ F' h2 r
the dBu value of an analog input signal which causes a full-scale output of+ ^1 d, p: f; f) c) _8 P
the A/D converter." Q% V- [" h9 @: U$ a$ j# m
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
) b9 y6 _. H; s, s8 j the peak level is therefore +16 dBu. The “Input dBu FS” rotary
1 Z% M# V# |: U5 G2 N switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
7 S" i9 X4 L, O: l Gain” potentiometer [3] increases the gain by 8 dB." \0 r1 M b5 \( A7 A
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
% S/ t9 O! q. k8 C[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
% V5 s# ], E. I4 O* o" |0 J/ { have more body; percussive instruments are less aggressive.' p& L k; \) Z4 v8 B8 _+ i
The group delay behaviour due to AC coupling of the stages is different in/ @" `5 H3 D2 u" p ~
tube amplifiers.
2 Q3 X' ~. g$ |2 m! A2 B The “Bass Warmth” control allows to select the frequency range. f2 W% l' a% s9 W s
(10...200 Hz) within which the effect is active., @4 ~( U. J9 y
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments." | K4 h0 I8 L* `3 P
Valve amps have a characteristic response, mid-frequency harmonic content
6 q" ?" Y8 J5 n is emphasized.
: t& V W5 I- m[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
$ Z$ N+ x; H" G' ?3 {. q The harmonics spectrum of a delicately overloaded valve amplifier is completely& I: r% |" `0 p+ O1 C/ B) E
different from an overloaded transistor stage.1 T8 E4 n- m( V/ Q- u& \2 Q
The “Gain” control adjusts a gentle overload while the odd-harmonics content8 ? c, @% h. b1 P3 Z
can be adjusted with the “Clip” control.
: W) A8 h. L0 a+ X[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24+ `4 B- O9 e+ S/ r
dBu FS.
+ D; B$ u- M' m; l[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the K0 C, d4 i( O! R7 R
desired channel.* K7 r( g/ M) C: O$ u! Q+ a) O
The “VALVE” LED is on when the Valve Dignifier stage is active.
) G% ?; H8 p. K* E/ Y0 i[9] INSERT INSERT function./ L2 f2 m3 A) k# J) B) @4 C) V
First key pressure: INSERT POST VALVE, the Insert Send is tapped after' U7 E5 J& P3 g& J4 Q0 p, I
the valve stage (display: “INS”); the Insert Return is directly fed to the Line' p3 s' i0 I$ B8 z$ R" ?+ z, {
and AES/EBU outputs.2 l1 K3 I- w2 n1 `
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before5 M& ?3 ]: K+ R$ H( ?
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via% S* n. `1 h- Y3 Z7 \4 Y8 l3 F/ s
the valve dignifier stage to the Line and AES/EBU outputs.8 q+ ?; R# o c* { |: c ^) Q
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
' y5 z: k1 k% ^3 d stage (if active) to the Line and AES/EBU outputs (also the Insert Send output* v% t5 H; U7 |
receives this signal; display: none).
* @, H" b( n) K* a0 F Insert Send and Insert Return are electronically balanced and equipped with( V5 O+ k) k+ `, [. d* I
XLR connectors.2 y1 R! L* X2 p7 Z! X7 I
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
e# ^, Q6 P7 Z7 x/ I8 |/ @. ^+ u ADAT digital interfaces. Each input channel can be switched to one of the
( o1 @0 I) @2 { `8 O8 x9 e; p* W channels 1...8 of the multichannel interface. If desired, also a mono mix is$ U' U T* c! m0 o! M5 W; S+ j& o6 ?
possible by selecting the same output channel for both input channels.5 Y3 n0 c1 ^4 E2 j+ e8 b; A6 O
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone' O, G2 ^' H6 V5 R2 `* n9 U
channel.
3 f& \6 I. {9 V o2 H+ p9 q( A$ d7 m Can be operated only if the input gain selector is in Mic position. The
* C! L4 _1 n( ]! y setting remains stored when switching over to a line gain setting.6 |6 S, S {1 r. H" F
[12] Activates the high pass filter on the microphone inputs of the desired channel.5 j9 N2 D. T* O" ], @$ K$ M
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
" {; s2 E: ]+ v/ d/ O7 Z/ C9 e Can be operated only if the input gain selector is in Mic position. The3 G% `8 v( t" }3 M! x+ }8 D+ c
setting remains stored when switching over to a line gain setting.
; b, t& Q0 i: q4 c9 \2 D[13] Ø Toggle key to activate the phase reverse switch of the desired channel.' z w+ `- B0 y0 J8 _) W
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
4 R% N5 y$ Z! ^. J “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
, q* q3 \. \6 f( K7 N. D g Noise Shaping (display: “16NS”) can be selected.
: g: M/ i5 O4 F: x( j[15] SYNC Selects the synchronization source for the unit. Possible selections are:9 s1 p/ s5 Z, @8 J" ^
INT 48 Internal quartz reference, 48 kHz$ n0 o' u1 I, O1 g" V
INT 44 Internal quartz reference, 44.1 kHz
$ P6 t+ T0 i/ M# P* j; R WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)* J7 [ T; }7 e7 X1 e
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
6 A; b) I4 E4 P/ ^5 V AUTO Selects sources automatically in the sequence AES-WCLK-INT! G5 P% c: N. P( ~6 E/ P
VAR Indication only, active if the external source frequency deviates from 48 or0 H% v& i2 T3 w+ i
44.1 kHz for more than approx. ±3 %.
: m7 y% Z9 Q" Q: @. n* s) L" Y[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –" H, w$ d+ [" n1 x, f8 {
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
k; S$ m; Z1 _5 Q2 i* W# p( j[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce/ s7 O+ P. |2 w- h( e3 V/ t
the danger of overloading the A/D converter with short signal peaks (if& y! }& q2 U( y* [* }9 r
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,1 {5 \6 ?3 ]- {( f$ u
allowing for approx. 6 dB reserve before hard clipping occurs. V: a9 f5 R6 ]
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