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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3 f$ G6 N, u: s- o! |/ ~
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
# }: d) N$ M2 d: o( ]8 G/ U default settings. The subsequent settings remain stored in a Flash EPROM3 ?7 ]9 e- n4 K8 V2 q
after switching the unit off (unit contains no battery).
X. B; S& s) ^. p[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
7 R* }2 t, ?1 i& ^3 X2 m/ ` between microphone and line sensitivity setting ranges.
+ {* b4 ]; g _& Q! p3 W7 U. j Mic: Range –40...+20 dBu3 s+ n* H* P: m- l, v" }0 q( _
Line: Range +14 dBu, +24 dBu
1 N s2 y7 c) t& J& K/ [& k9 T[3] Fine Gain Potentiometer for fine input sensitivity setting.! Y2 E9 ~- W9 D- `. t: G, F) N
Range of additional gain: 0...+15 dB.
2 q2 R9 O Q. N' k) b! x Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
% T, k8 z8 h% T$ g the dBu value of an analog input signal which causes a full-scale output of' \* k1 n& m" S
the A/D converter., E+ Q, e+ N$ J: B& e
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;, ~) i9 p; j% e, k) D, T7 P# k) P8 ~8 T
the peak level is therefore +16 dBu. The “Input dBu FS” rotary4 w4 W! L* ^4 `/ M
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine9 G2 x; w: u+ N9 S
Gain” potentiometer [3] increases the gain by 8 dB./ h+ W: K$ y0 M* c
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.1 g$ V3 x1 p: x$ ]/ P; G @, T
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
2 G1 z4 T5 Z8 }) G' `1 W5 S have more body; percussive instruments are less aggressive.
# f6 K& O9 `; y% d& b3 |& P, D& G The group delay behaviour due to AC coupling of the stages is different in6 ~# O0 s6 X* Y- C; i3 X
tube amplifiers.& }; v# Z3 p6 |8 _
The “Bass Warmth” control allows to select the frequency range& o0 }- k9 R( H& \
(10...200 Hz) within which the effect is active.
! e' U( N7 Z8 C9 T9 T3 v[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
1 V' p, [2 @- P Valve amps have a characteristic response, mid-frequency harmonic content
?0 G# E2 o. E5 }, b; ~5 p is emphasized.: C( Z) C* O6 q9 N$ Y7 N3 m# t
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
# F7 h( \: N6 v9 g" j8 a The harmonics spectrum of a delicately overloaded valve amplifier is completely
; w. |" P4 b' A4 X% G' o5 g( p different from an overloaded transistor stage.
1 X9 T# R4 e$ ~$ q1 y, D# Q; K# y The “Gain” control adjusts a gentle overload while the odd-harmonics content
4 j) @) o5 l2 m can be adjusted with the “Clip” control.
( y# O3 K% ^' a1 o) Z[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
4 a5 l& z9 o; c dBu FS. S# n' C9 u$ E" A1 P5 t! q
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the0 |! v0 e& ]5 v
desired channel., \/ c, O8 Z2 t# m( m c; o/ h; J
The “VALVE” LED is on when the Valve Dignifier stage is active.+ f/ i; U9 F, d" t) Q6 V7 X& N
[9] INSERT INSERT function.8 ]4 j; S( e2 `- }, r \
First key pressure: INSERT POST VALVE, the Insert Send is tapped after9 I. P5 j% `7 w2 R6 A2 h' D" j
the valve stage (display: “INS”); the Insert Return is directly fed to the Line! |6 O) \/ c: |6 T( n: e+ e
and AES/EBU outputs.
* _4 f& }, n t# F2 c- e. b Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
9 x7 i/ y- t9 K1 @0 J8 X0 i the valve stage (display: “INS” and “PRE”); the Insert Return is fed via, r3 E0 r, {" V( v9 s& x, c% C
the valve dignifier stage to the Line and AES/EBU outputs.2 `7 M' g1 J1 ]% y$ `2 u: c
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier+ \- ]( Q; ^2 X0 ?7 h& `
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output; x7 H; ^4 S' N' O
receives this signal; display: none).
9 X* b& y" c# |' L8 V/ B( H Insert Send and Insert Return are electronically balanced and equipped with
! O* o. [: g$ D1 W* |, G XLR connectors.1 D% n/ t4 G/ ?4 t; q2 n! r
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
! X9 I4 q1 k6 y' k6 X ADAT digital interfaces. Each input channel can be switched to one of the
8 ` J) f d8 ?3 s. ^9 A channels 1...8 of the multichannel interface. If desired, also a mono mix is e( s) _: W- ?4 M/ _- {9 [- K
possible by selecting the same output channel for both input channels.
1 w1 z/ S' ?& y[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone% A6 o3 o7 H& s
channel.
9 _; c% h0 r& T1 y4 Z3 s Can be operated only if the input gain selector is in Mic position. The M4 `* m& C: c' J4 A/ c
setting remains stored when switching over to a line gain setting.# s- v3 ~& Q# G5 K0 M7 u, u
[12] Activates the high pass filter on the microphone inputs of the desired channel.
. J4 g0 ~9 E, j# |* r4 d2 Y. s+ l( i. T Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.6 {) ?! t5 p& D; k' @( z" w
Can be operated only if the input gain selector is in Mic position. The
( X" ]' R; x- m9 J1 W setting remains stored when switching over to a line gain setting.
) J ^6 x- A J V1 j. W[13] Ø Toggle key to activate the phase reverse switch of the desired channel.9 Y+ t* ]# g0 T
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
+ p! A. G- s, K" J9 p, r “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
: G1 \. [; H; w6 D% S; X Noise Shaping (display: “16NS”) can be selected.' y/ m ]1 J. w* _# T
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
4 q5 u( K* s: k INT 48 Internal quartz reference, 48 kHz& M1 o+ ~1 H, g
INT 44 Internal quartz reference, 44.1 kHz4 W5 l6 M. u3 p% \3 D
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)+ I z- |! Z1 l
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
$ V4 V0 x. Q( }$ U! T AUTO Selects sources automatically in the sequence AES-WCLK-INT& z+ n. ^6 j6 g/ m( g& c" r
VAR Indication only, active if the external source frequency deviates from 48 or$ |( T. F0 f2 r
44.1 kHz for more than approx. ±3 %.' {9 u6 d4 G% |$ { R! H& X3 Q
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
& Z1 }3 O% ]9 w: {" m0 f3 l# L# X4 L+ x either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.1 r+ ~; H! E% p. e) e6 @8 Q
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce h P- }4 Q: P3 p3 ~5 b4 W8 k
the danger of overloading the A/D converter with short signal peaks (if9 i. n* t1 _0 C @- _
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
- U2 T( q% i# a. f& W4 _; j allowing for approx. 6 dB reserve before hard clipping occurs% P. W2 t: Y" z8 h7 H- N+ v* A0 K
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