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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
4 _0 v) ^* G; [" X$ D/ \[1] POWER Switches the unit on or off. The unit is ready to operate with the factory( H2 U* b' H# J) ^. J5 H
default settings. The subsequent settings remain stored in a Flash EPROM% L' s. ~ j0 {8 ^' N" N
after switching the unit off (unit contains no battery).+ ^! F4 x1 l, b% c2 N
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
7 Y3 h( `) n( y% x6 P between microphone and line sensitivity setting ranges.
: V/ q5 D) B2 k9 _4 l Mic: Range –40...+20 dBu3 M& @- w. A# P, [" l
Line: Range +14 dBu, +24 dBu% h' ]! n& z0 ]+ V- ] Y$ r) i
[3] Fine Gain Potentiometer for fine input sensitivity setting.
+ m' Y; i( g5 p( Y7 t* D Range of additional gain: 0...+15 dB.; Y# ]6 V7 ?9 y$ a2 P! A
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents# U# W2 D% ~/ I. e# Q
the dBu value of an analog input signal which causes a full-scale output of- q* O) g$ j8 P
the A/D converter.+ ?1 m$ g# \# i- s
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;) n4 G: P& C" \ X3 }( x/ p
the peak level is therefore +16 dBu. The “Input dBu FS” rotary2 G9 K% \9 ~/ J. u# A/ T
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine" Q* T! d, U `: [4 Q7 y) S
Gain” potentiometer [3] increases the gain by 8 dB.! m+ z$ P% ]! P% \6 I! h
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
2 F: J2 l- e, B3 h5 {2 u' v[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
+ ?: i* c2 m8 ?) z/ `* G% B2 q- k have more body; percussive instruments are less aggressive.
/ {( w* J# \$ G9 U1 t The group delay behaviour due to AC coupling of the stages is different in- h- b" C! U6 M# y9 @
tube amplifiers.
4 N& u% x& p( e% K The “Bass Warmth” control allows to select the frequency range
" \1 d) |" [% c( K (10...200 Hz) within which the effect is active.+ k3 Q. X& y# _5 t1 r/ W- G
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.4 F" |0 e- T1 s4 I3 M% }
Valve amps have a characteristic response, mid-frequency harmonic content
$ K" g" t7 [& Q' B) X! E7 n is emphasized.4 I3 `8 _- B. q2 L
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
$ S1 q0 g- \, R2 b1 [) u, G T The harmonics spectrum of a delicately overloaded valve amplifier is completely
6 w! E: a" ?) G2 d$ U d5 T different from an overloaded transistor stage.2 D! S: F- Z2 [7 U, i6 F4 ?
The “Gain” control adjusts a gentle overload while the odd-harmonics content
, M+ t; c9 T+ V4 b% F7 x5 |7 D can be adjusted with the “Clip” control.1 V7 w, K( j0 [' V0 R; }
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24/ H" B& b2 `; s: ?0 H
dBu FS.
& }9 ~7 \" w, Z( Y$ Y0 x[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
# F# R7 l6 M4 n6 P- \ desired channel.3 f7 ]9 e/ m7 u$ n/ d
The “VALVE” LED is on when the Valve Dignifier stage is active.
, O* v, a) s' ^" a5 ?0 P[9] INSERT INSERT function.# k4 y9 F, E* W2 E3 N. d
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
% P. X& A @' e/ R- F$ }! g the valve stage (display: “INS”); the Insert Return is directly fed to the Line
8 D# A- a( x# m4 c) O and AES/EBU outputs.0 P, {: X, v+ B7 k
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before7 X; E N9 C( `7 E1 a
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
% T* R$ t* y6 n! P; G7 n# x V* \ the valve dignifier stage to the Line and AES/EBU outputs.
^% {0 c z( w) T1 P2 j4 v Third pressure: INSERT OFF, the input signal is fed via the valve dignifier# z6 i6 P0 b& C0 I
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output- Q% l0 m h+ Q2 M; k1 |9 `& b
receives this signal; display: none).
* E2 g1 m3 c9 \" c Insert Send and Insert Return are electronically balanced and equipped with* F, r# [$ g# n; ]
XLR connectors.& M. o3 B6 x9 T, ?
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
0 G: p; H; T6 s9 n& J; z( p ADAT digital interfaces. Each input channel can be switched to one of the9 I, {4 n& J! q* R. l9 I
channels 1...8 of the multichannel interface. If desired, also a mono mix is
$ ^0 h6 |0 c- }# A6 I# e0 X possible by selecting the same output channel for both input channels.+ N+ w$ m" T! C3 n! v
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone. Y9 p* n- g& h8 j* t
channel.( F8 @, t {; J2 z9 G% t& P7 A
Can be operated only if the input gain selector is in Mic position. The" T6 O! a! o8 R4 r- P8 l: }4 E
setting remains stored when switching over to a line gain setting.2 B7 Z7 H+ a5 w# ^, A% [
[12] Activates the high pass filter on the microphone inputs of the desired channel.! u6 }5 F7 g5 [& D v7 r& J
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
/ X+ ?6 N: |& ^3 j Can be operated only if the input gain selector is in Mic position. The
/ C3 S1 z# a# _, d& E G3 A( G/ K setting remains stored when switching over to a line gain setting.2 C$ [& z% M' m) h/ I$ V
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* z( P7 R6 h; N
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:0 v0 d" d, ?* A# x# H: ~3 y, g7 U
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with9 c: W# D/ x' s/ @( p9 F5 t7 Z
Noise Shaping (display: “16NS”) can be selected.
0 v4 `% h( @' i4 i" ~* R; M[15] SYNC Selects the synchronization source for the unit. Possible selections are:+ S% g# {! W2 S7 H7 v1 R
INT 48 Internal quartz reference, 48 kHz
7 D! C- u5 e) f! q2 C/ y' @ INT 44 Internal quartz reference, 44.1 kHz
& V6 s8 F$ ^8 P, x4 {. Y WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
' ]9 t8 }, D/ I" ?/ }6 h AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
% ?/ X/ C3 H6 A1 _, \. X AUTO Selects sources automatically in the sequence AES-WCLK-INT
# L4 W" I9 F' F2 P$ N* i# { VAR Indication only, active if the external source frequency deviates from 48 or
( }1 ?1 ~8 x9 h5 W( {1 s 44.1 kHz for more than approx. ±3 %.- O6 g' m1 e* i3 Y
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
2 [. Y- W2 @0 `1 M) ?4 ?4 o: C. ~2 m either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
+ c. { ~: { k: a$ T4 |[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
4 y( V8 r; z& b- H- b5 Q7 o2 S the danger of overloading the A/D converter with short signal peaks (if
4 ^- \/ m' K' A, F active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
4 N& c' R# N/ Q+ { allowing for approx. 6 dB reserve before hard clipping occurs
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