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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 - B. Z% Y3 ?- R: R q4 Y
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英文电子说明书' A& B2 v+ }# E; y0 Z1 m/ r
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory0 u: T# ]: u; B6 s
default settings. The subsequent settings remain stored in a Flash EPROM
& @0 s7 X/ d: i" V- U after switching the unit off (unit contains no battery).9 _( t; c( u Q" W' h1 c
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
8 p0 n0 d! H1 m3 f( \) ]0 H: H- X6 V- k between microphone and line sensitivity setting ranges.
" R& O9 ^: d$ K& H Mic: Range –40...+20 dBu
$ {- S$ s1 l% s Line: Range +14 dBu, +24 dBu8 K) f4 m% L0 L
[3] Fine Gain Potentiometer for fine input sensitivity setting.3 c5 }1 U3 o/ j# x9 S
Range of additional gain: 0...+15 dB.5 M0 O8 b* T l- W
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
8 z6 o% y) z1 c+ G% I the dBu value of an analog input signal which causes a full-scale output of, C3 K8 f; \0 G# ~9 X( k% d
the A/D converter.! O# Z8 N' [4 z r/ O8 M9 @( `
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom; i+ X y4 P: P3 V. T* X: [" v
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
+ v' ?4 s" }0 E8 R; G8 H/ C switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
+ G; G y# k z& m9 Y Gain” potentiometer [3] increases the gain by 8 dB.
$ }! I. @9 y4 A8 g/ z3 o. a[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.; m' i$ S- l, ^( `/ c1 t" `
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals& Q' n, H* [: J" P; i1 i" f
have more body; percussive instruments are less aggressive.
+ m- L9 C8 X8 |2 V9 A7 ]' a The group delay behaviour due to AC coupling of the stages is different in9 i% M% e# ~: L8 I
tube amplifiers.; W8 v4 c, n- h$ ]7 r# e* D+ @
The “Bass Warmth” control allows to select the frequency range
/ ^( t3 A E6 ?7 K* C* }+ H- ^ (10...200 Hz) within which the effect is active.
7 G3 q* O ?/ g* V \. ^) L[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.3 E+ b7 l& L/ S( q i, t8 k) p9 r+ e
Valve amps have a characteristic response, mid-frequency harmonic content6 [* f- Q" I! D; @6 j+ Q
is emphasized.
1 J& Q6 U: G& x$ ?1 ~[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
3 q5 L5 }5 Q U! G1 f! X. E The harmonics spectrum of a delicately overloaded valve amplifier is completely
& E' ^9 a ~7 [! G: ?& B different from an overloaded transistor stage.+ }$ e- W$ L- w6 @2 \6 Y3 E
The “Gain” control adjusts a gentle overload while the odd-harmonics content3 @3 S; F/ A% v, U
can be adjusted with the “Clip” control.
+ P5 Q: W7 p( s9 V9 C2 s9 O. ?) E[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24! f# N7 i0 W, x R0 `, S8 M
dBu FS.' l3 y5 z! u( v! Q' s
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the" F0 V2 M6 U& M) _8 l/ A
desired channel.8 p! W% T m7 j. Q
The “VALVE” LED is on when the Valve Dignifier stage is active.. W" A: R7 {8 C3 F7 G0 U5 t- C C( T) f. ]
[9] INSERT INSERT function.
8 [8 C0 A2 A+ P0 y# | First key pressure: INSERT POST VALVE, the Insert Send is tapped after! v/ c* P$ A* m5 \6 b' N8 K7 o
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
1 z0 c% z( `( W1 G and AES/EBU outputs.
0 S7 M2 C+ z0 s- U& } Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before: r0 s) z5 L9 Y$ q1 m5 P# v
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via4 I! [) s5 g! D* b j+ Z, _
the valve dignifier stage to the Line and AES/EBU outputs.3 u. r; e1 J7 b# _3 `$ H% \
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
: X! w/ A7 a! \0 [& D2 D stage (if active) to the Line and AES/EBU outputs (also the Insert Send output/ F2 s; r6 |! O L6 z8 E; \
receives this signal; display: none).2 k) S2 f+ F; x8 X- y8 I
Insert Send and Insert Return are electronically balanced and equipped with9 h. A4 @* H. V5 q) F
XLR connectors.; f5 H1 A4 P# `8 N! _
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
/ f' Y0 ?3 }, R. ~$ S ADAT digital interfaces. Each input channel can be switched to one of the
( Q7 o' [* U& O9 @ channels 1...8 of the multichannel interface. If desired, also a mono mix is5 v6 M. R- J' G* {0 C9 f/ N, g) x
possible by selecting the same output channel for both input channels.$ H2 R# k3 g9 B
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone/ m* h4 J# ?8 h2 Y
channel.
o( Q% U5 U( j) g0 s" p& C8 Z Can be operated only if the input gain selector is in Mic position. The; w$ X' @/ m, \ {0 H8 x
setting remains stored when switching over to a line gain setting.7 V0 ]0 v1 t# Q$ p) x
[12] Activates the high pass filter on the microphone inputs of the desired channel.3 u9 g# ^; ^! E" H' E
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.2 a1 n7 \6 c( U' @
Can be operated only if the input gain selector is in Mic position. The3 U8 F% @+ y2 {) }
setting remains stored when switching over to a line gain setting.
: J }/ ]4 ^( _1 C9 }3 Y; S' k[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
2 w- P- C* S5 P- c5 m/ b[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
3 {5 c5 s3 [0 [& A/ B D! c b “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
5 M: {7 p4 ?' A" f* s Noise Shaping (display: “16NS”) can be selected.
" I8 ~! L) ]' n: @& X3 p[15] SYNC Selects the synchronization source for the unit. Possible selections are:7 `# J+ g+ [* U" u2 d
INT 48 Internal quartz reference, 48 kHz
4 M$ B4 C0 W2 R( z: K INT 44 Internal quartz reference, 44.1 kHz% ]; Y8 D9 x4 ^! @0 k$ r! t! M
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
: X4 A1 ]) A! p" w AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized). a7 C4 l, o) Q2 B+ [
AUTO Selects sources automatically in the sequence AES-WCLK-INT
3 }* M- p( \& u: G& H6 y VAR Indication only, active if the external source frequency deviates from 48 or
" L4 x9 L( g& U1 S 44.1 kHz for more than approx. ±3 %.( n; z: a6 g: A+ J( v- f" U1 o' T K
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
1 D, @, ]2 l a0 T b* K6 S0 ]5 [ either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
; }7 C0 n) w, B' X( g[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce, H- `5 I- D0 C1 Y( z' n5 `
the danger of overloading the A/D converter with short signal peaks (if
, R! M7 W) q8 E8 Z% _7 h3 [: K& f active, the display indicates “SOFT”). Threshold at 3 dB below full-scale, v0 e; ~. h% u; `- o5 S
allowing for approx. 6 dB reserve before hard clipping occurs& p1 K2 w8 W2 T+ H
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