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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 ! {9 b$ E2 u4 @9 `% |: D
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英文电子说明书4 W4 i4 K! x8 q8 |
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory' E4 V8 g8 v) S( A5 ]9 x
default settings. The subsequent settings remain stored in a Flash EPROM
! ^7 \0 C2 Y7 A. o( a' | after switching the unit off (unit contains no battery).
# Y$ ?1 ^0 z' [5 T9 T4 i[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position% |& A$ ^8 x' c9 e, R6 }0 y4 V
between microphone and line sensitivity setting ranges.
2 L+ m. F- F, f Mic: Range –40...+20 dBu5 U `' t) `8 I9 P& |$ t
Line: Range +14 dBu, +24 dBu2 C' N& R, v/ o
[3] Fine Gain Potentiometer for fine input sensitivity setting.
+ }$ Q# \- Y9 |- K$ g Range of additional gain: 0...+15 dB.8 J% ]0 X( O& I* p7 M8 E
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents$ p' a9 Z1 q ^$ h. Q
the dBu value of an analog input signal which causes a full-scale output of
. f& I; G f( X# J! q the A/D converter.3 \( w* c- n- S: x) V( J3 U
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;* r R* o7 J. E- O. I$ u
the peak level is therefore +16 dBu. The “Input dBu FS” rotary/ H$ a$ ~0 n# _, [ j* T( }3 y' ^
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine6 \& r1 B# N; _! @/ x: E" E8 g5 }/ l' O. }
Gain” potentiometer [3] increases the gain by 8 dB.
; ~# u0 X9 m; i+ u[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.% ]; I3 I: j- M: q
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
0 L3 ?0 C$ j: i1 T6 L) c9 w have more body; percussive instruments are less aggressive.) d1 {; `! l4 F& y) s" [# N
The group delay behaviour due to AC coupling of the stages is different in
* Z' o9 c2 C; Y1 |$ H tube amplifiers.
) D R. q" I* @+ [/ S9 u4 j The “Bass Warmth” control allows to select the frequency range4 q/ j/ |0 I% ?2 }. C
(10...200 Hz) within which the effect is active.
. w! P: ]7 m! J1 U; n, R[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments./ @1 J4 ?- Y* U4 W. g
Valve amps have a characteristic response, mid-frequency harmonic content: m0 k8 {/ Z; s9 _7 U" u
is emphasized.
0 M9 K. m! R' I. Q" P, G5 R[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
: V5 G2 F1 o6 P The harmonics spectrum of a delicately overloaded valve amplifier is completely
+ W+ R+ u7 G1 t/ _* P+ S different from an overloaded transistor stage.( ?; X% d8 _3 ~/ Y$ [$ J
The “Gain” control adjusts a gentle overload while the odd-harmonics content
) W; z" t: E3 V4 C" I2 a' a( b* t can be adjusted with the “Clip” control.9 d7 P$ T8 W# y* g. @& ?
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...244 t+ }) m. u* x2 T2 q
dBu FS." b' n5 v( \% y$ B+ a4 `0 ^
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
" ]. A( z- O' | p- L desired channel.
8 f& @# l( t2 v1 o I The “VALVE” LED is on when the Valve Dignifier stage is active.* U) o* ^7 A8 Z& p' q4 x
[9] INSERT INSERT function.
, l3 y5 x+ J# S" d& Y8 W! ` First key pressure: INSERT POST VALVE, the Insert Send is tapped after" h$ u5 ~4 O. w" d% i; K2 m5 j: o# F+ v
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
, v; O# j- e, |" O and AES/EBU outputs.$ {( N, r2 `' G' W( _5 G
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before% D2 }7 c9 N5 `4 X; r* p) P
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via. m& B* S* x' t! H* z/ P
the valve dignifier stage to the Line and AES/EBU outputs.% U7 p+ b+ u& }6 b. Q; q, z6 S
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier* C( t/ S. E# s1 ~( L1 f
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
0 c9 S2 U8 v* H8 x receives this signal; display: none).
/ a4 @8 [9 K- d6 h { Insert Send and Insert Return are electronically balanced and equipped with+ s; L* W# e9 n2 z8 C4 _
XLR connectors.7 P) f" A3 p0 A8 w$ a
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
- X- b! L" r: N ADAT digital interfaces. Each input channel can be switched to one of the
3 K# {; ] {$ ~5 a/ P" y channels 1...8 of the multichannel interface. If desired, also a mono mix is
6 i2 d- \+ E O! f7 r/ Y4 w possible by selecting the same output channel for both input channels.
# ?/ T+ @5 q# x5 P/ K[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
+ z5 ~0 X: M0 Z channel./ Y9 ^% u/ m2 F7 g
Can be operated only if the input gain selector is in Mic position. The
6 h2 ~! i* F6 B& O" w: A& R) i6 K: h$ { setting remains stored when switching over to a line gain setting.
6 k5 \% }1 @( c2 Q[12] Activates the high pass filter on the microphone inputs of the desired channel.( ]$ s' B; j# Q7 p% m8 J
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.3 f9 @+ i( J! `' f5 A
Can be operated only if the input gain selector is in Mic position. The
0 u& |( W0 ]* t, a setting remains stored when switching over to a line gain setting.
# ^2 g. I) l+ f3 K9 j) @( u! e[13] Ø Toggle key to activate the phase reverse switch of the desired channel.- {( W6 x- V+ e
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:8 ~! t/ L# n6 J; E3 y' W0 A2 y
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
/ s Q6 o, c" B4 j( c" M Noise Shaping (display: “16NS”) can be selected.
* a8 B4 P& C2 @0 @ M[15] SYNC Selects the synchronization source for the unit. Possible selections are:1 W( x5 `; `+ ^2 V$ Y* h
INT 48 Internal quartz reference, 48 kHz
|3 K2 Z- f* U# J; g' P+ Y INT 44 Internal quartz reference, 44.1 kHz# j* i+ G$ H* Y" o; i1 B
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)! [0 d. r6 x% D* n9 S- b) U1 z
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)0 L, C4 d6 s5 z
AUTO Selects sources automatically in the sequence AES-WCLK-INT
! H T6 F5 M" R4 I! X VAR Indication only, active if the external source frequency deviates from 48 or
$ @! |" Y, a+ {$ h: E" \% w 44.1 kHz for more than approx. ±3 %.* { n$ _. t5 ^, G& v3 c- z
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –2 p" S$ I1 {4 ^) p* T
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.$ z! O% ^2 \1 Y- T" A
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
p8 \+ Q v5 F3 o& ~+ R9 @ the danger of overloading the A/D converter with short signal peaks (if
, V/ R* a# e7 |2 Z$ B! P active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
5 p1 `4 Z# f% [/ h+ H# b% I allowing for approx. 6 dB reserve before hard clipping occurs* t& o0 b7 ?, b+ n" } m, S
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