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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/ O0 A- u- N0 n. p) ~ `
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory' [0 t7 Y. p& r8 b1 H5 h
default settings. The subsequent settings remain stored in a Flash EPROM
, Z2 N% Y+ E" ?: x6 D9 i i after switching the unit off (unit contains no battery).. ]% J0 g8 E P; h8 ?
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position. ~/ ^! c5 d' n2 e8 Y! U
between microphone and line sensitivity setting ranges.
8 ]7 N: ^6 b/ K% G/ u) w Mic: Range –40...+20 dBu
3 V S$ N. G. e- t" R; [! v: x+ O( z- u Line: Range +14 dBu, +24 dBu
9 K) A' v- P) |% |[3] Fine Gain Potentiometer for fine input sensitivity setting.
: S$ ^6 `! q: g" m& t/ H5 z/ D( @% ] Range of additional gain: 0...+15 dB.0 L4 n. o h2 q4 q: r
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
8 I2 b ~7 ^8 `: x# O! ^ the dBu value of an analog input signal which causes a full-scale output of
: E. g t: R5 x' T$ z* K the A/D converter.
; } i$ s4 `) z) p7 g' h* P Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
J& Q9 f- _# f) I* O# X# @ the peak level is therefore +16 dBu. The “Input dBu FS” rotary
6 j- m9 c0 {, ~% ~ switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
9 C1 M2 S/ g# v& w; o, H9 z6 P- M Gain” potentiometer [3] increases the gain by 8 dB. H* I0 B7 f3 c; K. X' V& D
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
) h" x2 s5 u' y9 m+ A! Q1 _ n) l[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals0 T2 y( l- p+ O2 u5 v0 t+ I1 ?4 e
have more body; percussive instruments are less aggressive.9 g4 t: X4 q* I7 Q
The group delay behaviour due to AC coupling of the stages is different in
7 c' N, M9 u( x% V* ^ tube amplifiers.; n$ x; _& ^4 b
The “Bass Warmth” control allows to select the frequency range0 u; s8 B9 ]* b' @0 G' S
(10...200 Hz) within which the effect is active./ V3 R s. Z0 t% W b7 g/ ^
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.8 e3 d* r' h% X4 e" j l1 t( ?
Valve amps have a characteristic response, mid-frequency harmonic content
2 p0 b# C/ p E0 Z. z7 T1 L. _) u; u is emphasized.
+ B/ B7 Y0 d4 T( ][6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
& N! `" g5 x% _' P: A* R# A7 S The harmonics spectrum of a delicately overloaded valve amplifier is completely
" c6 q' s1 y5 I8 u. n5 e different from an overloaded transistor stage.
8 j- u5 t7 Y, v0 A8 D( f8 V The “Gain” control adjusts a gentle overload while the odd-harmonics content
4 @. ~1 M' j) z9 d5 v can be adjusted with the “Clip” control.
5 `5 }( r j' M. i, b9 l& k' J* Z" J[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24, P+ X" a( S/ b7 r' J9 V
dBu FS.% G; k4 i. J Y4 J5 @( O
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
9 E* }( ~5 i t, J desired channel.; B8 f6 S A" ~7 s" Q X- G( v
The “VALVE” LED is on when the Valve Dignifier stage is active.
. ]2 ?0 L' P d6 e; s" w$ |[9] INSERT INSERT function.
& _2 x! n, u5 b# p. S+ _ First key pressure: INSERT POST VALVE, the Insert Send is tapped after& w8 D8 r9 e9 _
the valve stage (display: “INS”); the Insert Return is directly fed to the Line( ]: M5 I- I- x) c
and AES/EBU outputs.
! V' m/ c/ w D3 K Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
' N: \4 `8 S! B5 n& m, q- b4 F0 k the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
6 h; R4 r8 K7 @6 h# B6 M the valve dignifier stage to the Line and AES/EBU outputs.
4 f7 J. W# e$ V8 P0 f Third pressure: INSERT OFF, the input signal is fed via the valve dignifier, \0 U) U+ m5 k u9 d# h9 j+ H
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output: d1 j- z+ s K
receives this signal; display: none).2 o& L% q [' L
Insert Send and Insert Return are electronically balanced and equipped with
- j8 v! I: y" k XLR connectors./ ~1 H0 M/ a5 b" R- v
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or) ?% S0 Z d# o* m
ADAT digital interfaces. Each input channel can be switched to one of the$ j5 x4 L% L: b- i
channels 1...8 of the multichannel interface. If desired, also a mono mix is
. Y% W+ v2 Q7 l possible by selecting the same output channel for both input channels.) Q6 q, d; q! Y5 J0 v- N0 O: C
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone- d* s8 I8 Q) d5 k
channel.2 H2 m. S6 Z9 ^! o9 V( W p
Can be operated only if the input gain selector is in Mic position. The# {8 S4 Q5 q$ ]. m& m" N4 y
setting remains stored when switching over to a line gain setting.) ?) y8 h( G5 E0 r
[12] Activates the high pass filter on the microphone inputs of the desired channel.8 n0 v" R1 c2 X; ^+ d3 g* x
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.# s0 i9 [4 z) a% B% \& h' J
Can be operated only if the input gain selector is in Mic position. The& y1 w- y, N2 X# P1 ~
setting remains stored when switching over to a line gain setting.' D, y8 T4 V) B' m
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
5 Z( ^0 `4 z1 v [2 x/ c0 W[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
9 ^1 e6 ]$ d( Z% e; M “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with( N; X2 V+ Q1 p* ~0 Z0 i. x
Noise Shaping (display: “16NS”) can be selected.& I% y5 v- T& n/ s6 b$ U
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
8 J0 A3 |5 D: E* R: G3 V INT 48 Internal quartz reference, 48 kHz- C' E5 s" ?# I( n
INT 44 Internal quartz reference, 44.1 kHz
% p$ a$ \9 Q$ f% ~' n. }6 [ WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
, T! |# K; N! N6 Y/ L2 i2 O$ A AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
& V' q* Q* ^) b7 c: T( ^* f AUTO Selects sources automatically in the sequence AES-WCLK-INT
3 Y; s8 k. q, C6 A! m6 V+ W VAR Indication only, active if the external source frequency deviates from 48 or
: @3 L/ @( w4 m) w! j0 i 44.1 kHz for more than approx. ±3 %.( \2 \( U% n' m# X M1 w
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
+ R3 f$ P9 W" ?% n either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.$ P# X" z& b/ X1 Y! ]0 h( J% t
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
9 B) ^8 h( _% t/ z$ m, Q the danger of overloading the A/D converter with short signal peaks (if
6 D3 c. \! K% E( t active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,0 n/ @) k; t8 U0 q! k! c
allowing for approx. 6 dB reserve before hard clipping occurs- n, }2 N0 f: O n
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