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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 ' |; r/ l9 L! v7 S! k0 h$ m
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& ^& B m) R# w, ^ B1 A% x英文电子说明书- M- u; y# g1 _8 @6 w) w
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory- z( M( z6 ?1 `: O
default settings. The subsequent settings remain stored in a Flash EPROM
, T+ k) o% m8 | I& p8 t after switching the unit off (unit contains no battery).. V( @! M# x/ [
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position2 L/ X( S( n2 @8 G
between microphone and line sensitivity setting ranges.
/ F$ D: V; a! y$ A4 j `: V( p Mic: Range –40...+20 dBu* F# T! p! V# f0 {4 B& W1 G
Line: Range +14 dBu, +24 dBu
# n) S0 M* w ~% j: `3 o( q a$ D[3] Fine Gain Potentiometer for fine input sensitivity setting.. Q5 r: @) r( U$ T# I
Range of additional gain: 0...+15 dB.
$ H9 y5 p1 r0 S6 m; Y0 c Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents! U/ L, h( \$ q; K9 e
the dBu value of an analog input signal which causes a full-scale output of
$ O% s% M* \ F- b# y9 p the A/D converter.
6 Q% p9 _5 Y6 \% O3 F# ? Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
2 C7 J2 y4 O6 J the peak level is therefore +16 dBu. The “Input dBu FS” rotary2 g) o/ _3 `0 s, L
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine8 G, T; A0 h+ C
Gain” potentiometer [3] increases the gain by 8 dB.
( X# y, n3 r1 B. |% E[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.! o7 k# c# k& A
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals8 Z. ~2 W9 h" I6 v# a# B& C, y: `* b
have more body; percussive instruments are less aggressive.5 O, Z9 d7 g! \8 \ d
The group delay behaviour due to AC coupling of the stages is different in2 L! l. r* X9 x+ A. R* n5 u
tube amplifiers.7 P* M X2 b S* Y& ^7 A
The “Bass Warmth” control allows to select the frequency range
% g& `2 U; q5 {/ ^* p (10...200 Hz) within which the effect is active.
: ^) D- K% K, a2 i! P" ~[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
! J" S( m1 s8 p! d0 {: m( T Valve amps have a characteristic response, mid-frequency harmonic content3 E/ w" W2 o' Y- q, @
is emphasized.
; i. Z" P3 h% E% l( w2 m[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.. M5 u7 E/ O& _5 b- C9 z8 v
The harmonics spectrum of a delicately overloaded valve amplifier is completely, @0 m3 T- E w! T1 @1 ~2 x
different from an overloaded transistor stage.$ w, Z' C8 n5 t- t0 z/ r7 {0 @3 r4 r
The “Gain” control adjusts a gentle overload while the odd-harmonics content7 D6 {( I* r( a+ a- P6 b1 \
can be adjusted with the “Clip” control.
7 t& Z2 r# @6 S* f: @2 J3 a! W[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
0 \2 R! ~+ U* P) M! w) { dBu FS., x4 d8 @- ]- V/ q) J! y
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the4 v7 j: W8 m7 u* V9 o/ T
desired channel.4 b9 `: g2 X8 G
The “VALVE” LED is on when the Valve Dignifier stage is active.
1 ]" J' n, v5 _; U+ a, W[9] INSERT INSERT function.& m8 w) {8 t. P8 J$ Q$ U
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
( H0 ~9 v9 f$ d. S3 m( `- J the valve stage (display: “INS”); the Insert Return is directly fed to the Line
# I( _% g' m$ g and AES/EBU outputs.1 Q! p1 f1 Z- B$ }5 T, O4 k
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
0 A/ L! t8 f0 |4 [ N the valve stage (display: “INS” and “PRE”); the Insert Return is fed via e* D: W* X7 ?, c; j1 k5 j- W
the valve dignifier stage to the Line and AES/EBU outputs., P! q! O; {" z: X
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
* W0 ^) D N' t( H! j/ O7 T stage (if active) to the Line and AES/EBU outputs (also the Insert Send output' u% N: Q4 O# O( z' k
receives this signal; display: none).% I# z& v8 N7 n5 w: o4 W
Insert Send and Insert Return are electronically balanced and equipped with1 l4 C5 Z- a/ J% s' H
XLR connectors.
/ d5 }, \+ D. W" Q( ~[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
4 J& G6 J& D. M4 B! z ADAT digital interfaces. Each input channel can be switched to one of the
0 e# y O$ ~: U# T0 K channels 1...8 of the multichannel interface. If desired, also a mono mix is+ X* A2 f J4 p- U! {3 B
possible by selecting the same output channel for both input channels.
' Q: C: u: Y" T4 W: W[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone5 p% ~ b' J; q" D$ G, P: O
channel.
2 x+ y0 D( ~% l9 ]& {3 G0 M Can be operated only if the input gain selector is in Mic position. The [$ d( \" j# m3 d7 t# u4 O
setting remains stored when switching over to a line gain setting.8 O: g; T$ f, Q' l6 g d
[12] Activates the high pass filter on the microphone inputs of the desired channel.2 I$ B) G, `' K( R
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave." m+ p/ E* M. r* ~/ T F5 H
Can be operated only if the input gain selector is in Mic position. The7 w$ l8 e+ U5 s# |
setting remains stored when switching over to a line gain setting.* L4 D' w" y- v) U' ]0 V2 I
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.( _! X- V+ G' @- @4 P$ t* }
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:6 ?+ h0 d, b0 V
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with1 ^3 ^8 |8 |# m; Y3 i
Noise Shaping (display: “16NS”) can be selected.
8 ~$ `7 e* l4 F7 F/ E# |[15] SYNC Selects the synchronization source for the unit. Possible selections are:
/ b; k5 s/ |. t' u* T; l INT 48 Internal quartz reference, 48 kHz
! W1 `0 _; }$ c' p/ _" { | INT 44 Internal quartz reference, 44.1 kHz
6 u+ \% x) s/ K3 f; s8 r WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)* A6 y4 w( _5 E; g
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized) H$ U3 v4 Y8 ]7 X
AUTO Selects sources automatically in the sequence AES-WCLK-INT2 o# N. h: o+ \& U3 _
VAR Indication only, active if the external source frequency deviates from 48 or& {& o: b( L- J+ {0 S2 }* ?
44.1 kHz for more than approx. ±3 %.
* \5 Z/ K0 F j8 g7 ^3 E& A% k[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
- ?( m- A8 F& b$ o9 _9 c0 u* G. _ either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
8 H3 m& p& I; @4 o" E! G$ R4 F& R w[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
+ O& l& u- E5 e the danger of overloading the A/D converter with short signal peaks (if
: k% F D& c% t- r. Z! e active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
, \* k3 s& F _+ z( i( y' A% ` allowing for approx. 6 dB reserve before hard clipping occurs
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