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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
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英文电子说明书' l+ H# N& ~9 k' ?% e( F- u
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory8 x8 |8 R) B! \5 s( ~# E
default settings. The subsequent settings remain stored in a Flash EPROM+ N# V5 p; c! P0 N, p
after switching the unit off (unit contains no battery).
7 z0 Q1 N& h. Q/ k, u6 ^[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position" {* A* Q" V$ D: A# p0 R
between microphone and line sensitivity setting ranges.4 n% @3 O8 K7 p1 q/ u; o
Mic: Range –40...+20 dBu2 W1 m9 z+ u+ K! J& W3 L$ x1 h# t; T
Line: Range +14 dBu, +24 dBu
! P. `9 |8 k1 P$ a[3] Fine Gain Potentiometer for fine input sensitivity setting.
9 |- G7 Z; G- Z3 e( |! G Range of additional gain: 0...+15 dB./ ]3 c* G( P2 \' `1 `1 X i4 p
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
; F# E- e! I9 i- k the dBu value of an analog input signal which causes a full-scale output of8 F6 z( @& k$ L5 T9 |. N) w9 z
the A/D converter.7 O" h& l# [! f& P( e8 j" K
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;0 c/ X" Y% {1 d9 O9 P
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
+ l1 ~+ L _; K switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine% M5 q" z8 y! D' |: R
Gain” potentiometer [3] increases the gain by 8 dB. H! J* [& O0 i6 m2 \0 x
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
6 s( F- L+ f. F, b' _9 ][4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
# s# R+ w, i( q4 L0 U have more body; percussive instruments are less aggressive.: Y% Z3 Z/ ]# }
The group delay behaviour due to AC coupling of the stages is different in: G* Z: f' K! f; o
tube amplifiers.5 Y4 v: e+ f" M9 q; k, Z; J
The “Bass Warmth” control allows to select the frequency range! C. i. [, r7 `1 Y6 g/ {0 i9 b! Q5 ~
(10...200 Hz) within which the effect is active., j, ]) G: Q9 u3 [
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.; U' s3 E0 y0 J) h; X8 h
Valve amps have a characteristic response, mid-frequency harmonic content
: S3 h* p! d3 H [ is emphasized.
# [, u5 D( e+ ~' _[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.( D1 K1 Y7 y+ g" D, t: n( O$ R. E
The harmonics spectrum of a delicately overloaded valve amplifier is completely
: W, s& X) \, N; B different from an overloaded transistor stage.7 b, k9 m8 ~9 U
The “Gain” control adjusts a gentle overload while the odd-harmonics content
4 Z: d5 o% z9 R! g f can be adjusted with the “Clip” control.
& R! ~& y; \( {[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
C% {9 Z+ z& M9 Q7 h0 q* h( m dBu FS.
$ R& y4 W! h: H1 e& `[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the9 T7 s: U5 c% J! l) \) U) V- k
desired channel.* `6 R! V) [; c6 ?/ ~7 p2 ?7 A+ L
The “VALVE” LED is on when the Valve Dignifier stage is active.
. i, s( F( R, d, v5 G' @4 q$ a[9] INSERT INSERT function.) U7 C f, T) b5 E% }
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
' f" B" E4 _9 A. j& N& ?# N' _ the valve stage (display: “INS”); the Insert Return is directly fed to the Line
- @9 G7 Z% }$ I- i and AES/EBU outputs.
' m6 N: F( C9 ]( Y* L Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before2 J3 T5 f" \/ w6 S } S1 r
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
. `7 M: j' J. g; {+ ~% l the valve dignifier stage to the Line and AES/EBU outputs.
9 s0 _8 l) ^5 G, c6 w Q, L Third pressure: INSERT OFF, the input signal is fed via the valve dignifier( y4 {% O( R. R; Z6 n
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
# z8 E" N/ x$ t; g ^5 x: B" ~7 p, Z receives this signal; display: none).
6 ~( Y' p9 D) I Insert Send and Insert Return are electronically balanced and equipped with& p5 C6 w1 Y" I) l- g [
XLR connectors.+ E. _6 A! S: Y$ J3 l
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
1 ?( [* s0 J0 y ADAT digital interfaces. Each input channel can be switched to one of the3 u; T8 C* f. b1 X7 D
channels 1...8 of the multichannel interface. If desired, also a mono mix is
- y4 m, T$ R, d4 b possible by selecting the same output channel for both input channels.3 {- S9 r: {6 d U0 y
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone' R% X3 K( s V j
channel.
) X- I- j* o( F' c' R9 Q1 I Can be operated only if the input gain selector is in Mic position. The
6 F9 H$ f' {( ~! @4 L9 G setting remains stored when switching over to a line gain setting.% X) C- w" s4 w
[12] Activates the high pass filter on the microphone inputs of the desired channel.
6 H4 h8 N7 r" G Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.- l+ e7 _, Y% I( H1 p5 W
Can be operated only if the input gain selector is in Mic position. The
7 @7 z3 r* Y0 k" ~ setting remains stored when switching over to a line gain setting./ f5 n7 n& w2 |( h
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.7 n! f6 p! ^! D% `
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:' y6 x7 [8 A# L$ p! K6 }& `+ R
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
( Q1 r9 e# l& G# `( v' x Noise Shaping (display: “16NS”) can be selected.6 A/ z, n% ^4 l8 f
[15] SYNC Selects the synchronization source for the unit. Possible selections are:- r. t3 s& ~4 `" K! X* k" Z
INT 48 Internal quartz reference, 48 kHz" B& ]8 B0 c8 h8 F i
INT 44 Internal quartz reference, 44.1 kHz" e& Z' ]; S# P7 Q& T( m6 A& v
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
: y$ b9 s+ S1 E AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)3 y/ z9 y/ n+ _1 a2 ^
AUTO Selects sources automatically in the sequence AES-WCLK-INT( C3 Z9 m* t/ P7 D6 s% o# z4 R
VAR Indication only, active if the external source frequency deviates from 48 or D9 x) I2 ^$ V6 A% T" `
44.1 kHz for more than approx. ±3 %.
! G& ]+ C) A: S/ Y# L[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –. N% ?6 i j2 S$ B4 |1 Z, _( T% j
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
" m5 E1 y @3 z+ L' | B( S[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce/ n( X7 d3 z" Z
the danger of overloading the A/D converter with short signal peaks (if2 q! N& B* }. W0 Q2 q
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
H* M9 D, {9 g4 O$ {$ ^ allowing for approx. 6 dB reserve before hard clipping occurs
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