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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. @( q1 i' s: t; b9 N; W; ^: S0 X! @
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory; U1 x$ N; G; \" a2 T9 \. G& n
default settings. The subsequent settings remain stored in a Flash EPROM
' t- m4 U! f& N: {0 E$ S8 [ b2 n after switching the unit off (unit contains no battery).
5 I: M/ a, ?* y8 q; H9 i7 v[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
7 O* J+ v2 E- i, F5 L6 y between microphone and line sensitivity setting ranges.' C4 D- ^7 d. i
Mic: Range –40...+20 dBu4 o$ ?6 p: i" v& I
Line: Range +14 dBu, +24 dBu5 K/ @* c, D# e$ X6 q3 Z+ t9 G6 Y
[3] Fine Gain Potentiometer for fine input sensitivity setting.
* C }& e* _: q; ^7 b Range of additional gain: 0...+15 dB.
& e7 Z# p# e6 d' s, I5 ]$ `, V1 d Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
) K& }; z$ x( I# K" J the dBu value of an analog input signal which causes a full-scale output of
) f3 I, R, k5 o& r5 a2 H the A/D converter.
- u$ ~# k0 M) Z/ t8 ~; A Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom; m, _* g% r+ ]& H
the peak level is therefore +16 dBu. The “Input dBu FS” rotary& l B1 H% p: O2 R
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
, \; V6 v% _$ L Gain” potentiometer [3] increases the gain by 8 dB. a, i6 t s0 o# C" z8 g9 v
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.- W' V0 L/ k5 o9 I# ^0 m; V. Q
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals+ j7 C. c2 p0 M2 i4 c9 O
have more body; percussive instruments are less aggressive.3 R: {4 @2 _3 E& ?
The group delay behaviour due to AC coupling of the stages is different in
# A4 O# V; ], t- ?: R* T! B* y tube amplifiers., F( A* q; X9 h0 ^
The “Bass Warmth” control allows to select the frequency range8 q# a& T' R& y
(10...200 Hz) within which the effect is active.
- W/ i& f5 j8 q$ J3 T[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.0 y7 ]+ t: V, k+ V- u
Valve amps have a characteristic response, mid-frequency harmonic content+ a2 R* n5 ~) T- @' _6 [
is emphasized.
+ g1 x( a/ y d6 `! K, V2 r# @0 E[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
. }6 @3 I6 A1 F. q( L% c The harmonics spectrum of a delicately overloaded valve amplifier is completely
. ~! c) r8 O! ?+ c different from an overloaded transistor stage.
P' |6 x' B/ U2 o7 J6 f' ^) s The “Gain” control adjusts a gentle overload while the odd-harmonics content. G+ T# b6 J0 f! E
can be adjusted with the “Clip” control.1 ^. v7 @9 j7 h' y
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
% k9 ~$ x# d5 \. W dBu FS.
" x! X+ o2 A3 D: D! ?[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the4 l) D. I/ \0 G6 G0 B+ ~% S, D
desired channel.
9 O& u/ Y3 Y* d/ ^ The “VALVE” LED is on when the Valve Dignifier stage is active.
3 @% E! J4 U5 N t2 u; c[9] INSERT INSERT function.
: {5 o, Z/ w! _% q First key pressure: INSERT POST VALVE, the Insert Send is tapped after
, i( G4 z" V" [% Q: R the valve stage (display: “INS”); the Insert Return is directly fed to the Line& [! n1 e; w2 h3 i
and AES/EBU outputs.- J- V$ u3 y/ W. L+ x( e, j+ t, g
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before0 V/ x* ]( R* V1 g
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
6 I- `+ [# n. Z/ c7 S2 V the valve dignifier stage to the Line and AES/EBU outputs.
- M. d3 _6 ^ p6 \, @- e Third pressure: INSERT OFF, the input signal is fed via the valve dignifier& V# }$ ~4 v; |( S* e
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output# Q2 s+ t7 W t: h4 R; e* h
receives this signal; display: none).
% y, G& I( E j& W# N Insert Send and Insert Return are electronically balanced and equipped with
3 L* p0 x( c; v' J XLR connectors.
8 |' I$ O" y7 G& Y* s+ v& b[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or% ]6 p* s1 V+ y: I
ADAT digital interfaces. Each input channel can be switched to one of the! M3 Z8 X! R2 K; P" m7 O
channels 1...8 of the multichannel interface. If desired, also a mono mix is
( B+ L, ~: e' Q possible by selecting the same output channel for both input channels.% f5 b1 z- R6 P0 S' i
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone2 F4 l% f9 \1 ^% c9 u. T
channel.$ J7 R4 Q5 r6 D2 q- q6 ]
Can be operated only if the input gain selector is in Mic position. The+ s6 @7 g/ u# Z' y2 M: [* w
setting remains stored when switching over to a line gain setting.- S: [# S& e* q+ Z
[12] Activates the high pass filter on the microphone inputs of the desired channel.- ]3 r; q3 T4 k* ?4 S: W1 c( p
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
" s; v7 ^2 F; e7 g/ e3 C Can be operated only if the input gain selector is in Mic position. The& ?, Z2 j. D ^( h7 B' m) d0 T- l9 [) ^
setting remains stored when switching over to a line gain setting. o& F& G0 H7 u* g$ t8 s1 t
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.+ [5 f D) r8 R1 P0 y
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
7 E% E# |$ ?. Q- N7 G “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
8 i# P7 s; ]# g& V/ Y; V7 g! H, T Noise Shaping (display: “16NS”) can be selected.9 z" K7 O1 a$ l) O! G
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
3 r1 S) n" B3 I4 N7 T( V INT 48 Internal quartz reference, 48 kHz
6 _( c- R, Q, s INT 44 Internal quartz reference, 44.1 kHz9 j$ @, C7 R9 a) y9 L
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)2 `7 Y9 e* ?% `, ^
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized). n3 e7 x+ D8 J9 B
AUTO Selects sources automatically in the sequence AES-WCLK-INT" z6 ^4 _5 t E* N8 k
VAR Indication only, active if the external source frequency deviates from 48 or
( ]5 f! v5 N/ ~/ f 44.1 kHz for more than approx. ±3 %.
, K( k4 L0 W+ v4 Q" Q9 X4 m# K p[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters – ^. N# L6 r) v3 p5 b% m
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.. i3 A1 \+ K# N0 b& J6 S8 \9 s
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce3 F( ^1 A+ \) _8 }" d9 i( I
the danger of overloading the A/D converter with short signal peaks (if
3 l2 A# D! @! w+ D: X2 h active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
) Y8 _* r: w1 K' V" A allowing for approx. 6 dB reserve before hard clipping occurs
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