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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7 [8 y9 o' `) e! x3 i
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory6 L2 l2 e! B" u
default settings. The subsequent settings remain stored in a Flash EPROM
$ V( o, X& c2 h6 l after switching the unit off (unit contains no battery).5 |1 c6 e- N- f5 y
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
( }& ]/ L0 S3 x2 H between microphone and line sensitivity setting ranges.
( x8 `9 l$ K8 O2 ?; N2 @* M1 X Mic: Range –40...+20 dBu. V* b8 N# v) Q. r8 h1 r D
Line: Range +14 dBu, +24 dBu9 {( a/ y: t$ K* G$ Z# p* f; b
[3] Fine Gain Potentiometer for fine input sensitivity setting.
' X' V' j4 b, C4 o4 [5 [4 p: b Range of additional gain: 0...+15 dB.
~3 F" N$ H: Z: e- o Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents6 ]- B" d. S/ [: c* i
the dBu value of an analog input signal which causes a full-scale output of, Y- l7 U+ G% Y5 `
the A/D converter.- v% l. ~5 N8 r* f
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
* }; b `+ y- Z( A! s2 M2 ~ the peak level is therefore +16 dBu. The “Input dBu FS” rotary( h7 m0 `* O8 ^* {2 \
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine, l, ~, R' U9 h( k+ o' W+ m
Gain” potentiometer [3] increases the gain by 8 dB.) u# g: z& u% W$ Q+ t: |
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
: h4 C. g/ d$ e4 @. d[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals# {3 ?# O& R5 p
have more body; percussive instruments are less aggressive.
6 d: S# M& K0 s0 x, G4 A( N" V The group delay behaviour due to AC coupling of the stages is different in
. k; `% G( B5 l tube amplifiers.6 t; o6 |/ H% ]4 a9 [' j$ z4 f4 O
The “Bass Warmth” control allows to select the frequency range
+ a1 E5 a! I" v* P+ Y& m (10...200 Hz) within which the effect is active.3 q, N1 L2 z/ N/ Z' F* l& g
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments." l- p: ]3 ?4 G* j2 v8 l- `
Valve amps have a characteristic response, mid-frequency harmonic content
( P5 j, F" c; ]- ` is emphasized.
& X) q! f1 f! ^5 u0 A; N[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
% p5 J" l0 H& t- q: x: r! J, p The harmonics spectrum of a delicately overloaded valve amplifier is completely' c2 ?. q/ ]5 |0 l- {
different from an overloaded transistor stage.' N, t* X5 i- ] ^# L/ \) `. o
The “Gain” control adjusts a gentle overload while the odd-harmonics content
( K, h" L- C* z( p. E7 S Z# g can be adjusted with the “Clip” control.
7 v, w! ^" C6 o4 @: X, P[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...242 v' [1 I3 E" _- }0 a6 L
dBu FS.
# J# y) j) P. a* g[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the( V' I0 r" R; G$ |
desired channel., D3 [% h: ~4 Q
The “VALVE” LED is on when the Valve Dignifier stage is active.; y" B; R8 O9 }' |- j) u
[9] INSERT INSERT function.0 c, o) l5 Z3 a0 M0 d
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
3 h4 i9 A. d; l4 n7 s& D2 D the valve stage (display: “INS”); the Insert Return is directly fed to the Line
) B! p8 p+ m! T/ N) o and AES/EBU outputs.
/ Z$ \8 Z) e2 J" n( Q3 j Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before) T' W# h3 v9 R! S
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via6 {- {. i. Y3 `1 C0 e
the valve dignifier stage to the Line and AES/EBU outputs.
# E' C6 K9 y/ U% q Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
+ O' m" \; ~ l+ F3 X$ y% ? stage (if active) to the Line and AES/EBU outputs (also the Insert Send output$ [- w3 H, x1 X
receives this signal; display: none).
# j2 c9 R6 x! a& {: { w. w! k) [ Insert Send and Insert Return are electronically balanced and equipped with
! B+ z+ ^; v+ T) n2 M" Y XLR connectors.6 X% G7 W9 Z0 l0 o
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
5 h; G" I' T' H ADAT digital interfaces. Each input channel can be switched to one of the
# H3 U- G4 i( L" n( G! Q& C I9 L channels 1...8 of the multichannel interface. If desired, also a mono mix is: p% ?1 B( l D& K V0 P
possible by selecting the same output channel for both input channels./ {( z& a- n; l3 [% g. j" {
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone- |% K1 W0 I+ z2 l) A6 R8 ^: w: f
channel.
+ T/ V7 f7 B# G& m; A% [ Can be operated only if the input gain selector is in Mic position. The! [, r# J* j; D4 U, g( w, E
setting remains stored when switching over to a line gain setting.
: Z+ Z8 N) q; i[12] Activates the high pass filter on the microphone inputs of the desired channel.
& z9 s# M5 e" m" K: o Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
+ N7 ^' D% l# C5 k4 P+ q9 \3 P4 k& \, p Can be operated only if the input gain selector is in Mic position. The4 {, \+ g: W; d l8 _
setting remains stored when switching over to a line gain setting.' w E( V) s2 \2 u
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
/ T0 W, P. ?5 F# Y0 G; G6 s[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, Z% H f! p3 f: i “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with/ ~* e( t. L a6 }& J
Noise Shaping (display: “16NS”) can be selected.
' I! g$ Q2 a( Y8 {4 O- w/ d- I[15] SYNC Selects the synchronization source for the unit. Possible selections are:
/ a+ Z/ S" B4 L3 p8 W& p0 P7 I INT 48 Internal quartz reference, 48 kHz. }% u# k \. ~+ I; v. n1 h
INT 44 Internal quartz reference, 44.1 kHz
- X* p( c0 l/ h0 X! f' t' y% m' t WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
- y" |* G1 V" j1 z3 c* b% ?6 w8 { AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)+ C8 r! N6 @; ]& h }+ M
AUTO Selects sources automatically in the sequence AES-WCLK-INT* }% u: J0 u; H- `8 w
VAR Indication only, active if the external source frequency deviates from 48 or
7 p w' U7 p1 u; s, W9 O 44.1 kHz for more than approx. ±3 %.: O& [. t5 X! L; P0 P# M3 }' P
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
- U. ^0 S! D2 o either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.( s" C( W. }% c) c
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
- ]$ ]( j# x7 K# G0 ]7 X% v the danger of overloading the A/D converter with short signal peaks (if
' N* y) W& m+ ~) c4 n+ i' n active, the display indicates “SOFT”). Threshold at 3 dB below full-scale, K$ R- s8 q) f( m6 x# s
allowing for approx. 6 dB reserve before hard clipping occurs
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