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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 # O# K p+ g8 H+ O
8 F* L0 G, T& c. B0 b" H' ~! d- B' g; F英文电子说明书
' |/ s% E7 D. T, U[1] POWER Switches the unit on or off. The unit is ready to operate with the factory* _+ B3 G2 H8 }/ L6 k
default settings. The subsequent settings remain stored in a Flash EPROM3 V; S" _* j% l1 l+ {
after switching the unit off (unit contains no battery).
- A2 Z, b+ W. s" [& U[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position7 d2 E4 r! t) D
between microphone and line sensitivity setting ranges.
% d$ b/ c& L3 b( d6 M+ G- c Mic: Range –40...+20 dBu
. B$ F( B6 A! G1 E$ z# ] Line: Range +14 dBu, +24 dBu, K+ g5 t% I* Z- o+ r1 a% R! x1 I
[3] Fine Gain Potentiometer for fine input sensitivity setting.
- |3 @% }/ n1 J9 a Range of additional gain: 0...+15 dB. h/ a. H0 U7 h% p1 z: z1 ?
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents5 R5 ]1 d7 ^4 e' b6 W
the dBu value of an analog input signal which causes a full-scale output of
8 _7 M' d( D; F: e the A/D converter.2 D! l+ \% k% ?$ |
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;7 b% U7 Z6 K) Y- |3 ~4 j$ |
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
& q) h$ X$ \0 p# L1 Z8 T switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine: [8 ]- U+ V6 F( g
Gain” potentiometer [3] increases the gain by 8 dB.$ {# s; J, ?* s }
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
6 @! N% b ~; J0 W3 U[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
$ y% ^9 g( v( K |' \" G# f3 y have more body; percussive instruments are less aggressive.
; z; t4 b( t$ x5 ]! S; t1 ?1 `0 h' F The group delay behaviour due to AC coupling of the stages is different in% Z3 v1 {$ k- {; D+ K
tube amplifiers.
- q0 x! S* ?& p* u2 v The “Bass Warmth” control allows to select the frequency range$ B4 c9 j1 t1 J
(10...200 Hz) within which the effect is active.
" @! i8 w* X* ~[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
+ C1 Z, M! F* }6 Z( N% V% v$ H4 \ Valve amps have a characteristic response, mid-frequency harmonic content4 d7 H$ n o& ~- u0 V
is emphasized.
( @: \; Q$ z* L- f[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
5 `9 C0 m: `$ ~5 Z7 V1 o( E* | The harmonics spectrum of a delicately overloaded valve amplifier is completely8 Z. _7 I9 b% F! C8 w5 @) p* K
different from an overloaded transistor stage.
8 H% C+ R5 A$ } The “Gain” control adjusts a gentle overload while the odd-harmonics content$ J" q: b( V2 o; g/ g
can be adjusted with the “Clip” control.
0 n, d. e! P0 ^# I9 r[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
K; L U# K8 g3 z6 i4 _ dBu FS.( P* A* r: r( m( Q6 I# }
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the; l2 d, E# K3 ]$ Q1 M
desired channel.3 f" ~6 H+ C" E6 a
The “VALVE” LED is on when the Valve Dignifier stage is active.
# e+ z( ?9 I+ H: b* p1 V: S% B4 M[9] INSERT INSERT function.
$ d0 S8 `7 Y2 ?% @. U First key pressure: INSERT POST VALVE, the Insert Send is tapped after5 a$ A2 y: {" l# j! v, n
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
: O$ i5 K2 k% R and AES/EBU outputs./ E) n" j/ s: J( q( J7 [ d N
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
3 f, O) V- r' G" i& I; U7 x* V4 m4 o9 O+ q the valve stage (display: “INS” and “PRE”); the Insert Return is fed via0 T* @9 j7 o' r$ Y
the valve dignifier stage to the Line and AES/EBU outputs.
- O7 P+ q9 a! D I Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
5 Y# D% i% b/ p7 i8 G& q: Q stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
: Q. e# o6 e9 p5 d6 i# u) D, R receives this signal; display: none).
( c' c$ y3 N. o0 K% Q) ]. h Insert Send and Insert Return are electronically balanced and equipped with& N8 x1 Q0 v! Q, t1 R& V
XLR connectors.) P' f; A: o6 z5 q; G/ z# s
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or2 o/ r1 k0 v6 ~8 {7 k
ADAT digital interfaces. Each input channel can be switched to one of the
" H! X4 h9 q# s, H( z; M channels 1...8 of the multichannel interface. If desired, also a mono mix is3 _( h! f' t: N, r2 V
possible by selecting the same output channel for both input channels.
4 h$ p O( w/ N6 v, t5 [[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
' T) E5 [1 ?$ s5 D" r4 u) C1 o channel.
- E# B T+ g( w, Y. Z Can be operated only if the input gain selector is in Mic position. The
5 D- g% p* B" u- w4 P a setting remains stored when switching over to a line gain setting.$ {2 ^ {' q e) n9 l
[12] Activates the high pass filter on the microphone inputs of the desired channel.
5 `" ?$ s6 P6 W Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
; P# q& z3 \+ t# ` Can be operated only if the input gain selector is in Mic position. The. H7 H0 y& h3 a, b* {" J" X
setting remains stored when switching over to a line gain setting.& W* M& @ X* [- V+ B2 Q1 \
[13] Ø Toggle key to activate the phase reverse switch of the desired channel. S* C( O4 j: |" C2 F
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, c V3 J; [( ~2 T “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with1 ^9 V9 u* Y m1 d @
Noise Shaping (display: “16NS”) can be selected.
# l* d9 m9 s/ g; ], J& a[15] SYNC Selects the synchronization source for the unit. Possible selections are:
# v* [* n9 m& w# ]& y INT 48 Internal quartz reference, 48 kHz
3 u8 o T5 y9 V, H0 {- q+ l' _# } INT 44 Internal quartz reference, 44.1 kHz6 v5 Z+ E) {& G9 h7 X
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized); j/ Z- C! }/ N. X! \# t. {- D
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)" }- J8 p: D8 N
AUTO Selects sources automatically in the sequence AES-WCLK-INT4 o9 t5 Z# c* A6 P+ a
VAR Indication only, active if the external source frequency deviates from 48 or
1 c( L4 ]1 {/ H7 ~+ @( ~ 44.1 kHz for more than approx. ±3 %.
( j% l0 Y* F: f) Q3 t* Y$ d' j; v[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –9 t4 d+ A+ c) [. {+ k/ B
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
( t+ w, v, ~7 _) X[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
/ n" b1 P& [9 t# U' |* I: i2 A7 J the danger of overloading the A/D converter with short signal peaks (if0 U( W$ Y; l* q {+ k, \1 E5 A
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,, t# A9 C* x O2 h7 p
allowing for approx. 6 dB reserve before hard clipping occurs
3 w8 P' a' y' t8 c" I: p 6 x( G7 G0 B( m6 |0 @* y1 N- u* Y3 u
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