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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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: v* l' Z) Z) F& y( `( X7 Z' [4 w. _2 y英文电子说明书
! f& G# H* v( {- O[1] POWER Switches the unit on or off. The unit is ready to operate with the factory4 H, E$ S" u8 \' f( a
default settings. The subsequent settings remain stored in a Flash EPROM
8 a; [% |: g, Q" A after switching the unit off (unit contains no battery).: O+ q$ n+ _- P$ _! l
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position* F" p" }/ @1 N: q7 [0 v1 X& r- u$ w
between microphone and line sensitivity setting ranges.: ?( U; B3 Y% L) Z3 e
Mic: Range –40...+20 dBu3 z' d* Z* Z5 d; e% ] n" S/ N2 L( Q
Line: Range +14 dBu, +24 dBu
4 ^7 P1 ~& x" N: S& }$ U8 l$ H) _[3] Fine Gain Potentiometer for fine input sensitivity setting.
+ Z) ? e. o4 F T$ R( k Range of additional gain: 0...+15 dB.% [6 g+ ~! [1 u0 ~: h z
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
1 y% H$ x; \' q+ N) Q the dBu value of an analog input signal which causes a full-scale output of' U/ e7 b( b( C* i
the A/D converter.
0 V6 T( S: J- O# G Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
8 t" |0 v) w7 v" u5 F: E) o$ f the peak level is therefore +16 dBu. The “Input dBu FS” rotary4 ^% T0 K: X) y) H/ G
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine' g+ t- b6 b: x5 t
Gain” potentiometer [3] increases the gain by 8 dB.9 t* F/ Q( X6 ~( D9 V
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.* p2 r: T0 W1 f
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
! v% F% @. `5 ^: y6 C have more body; percussive instruments are less aggressive.% P( K) Y. T+ Q, j; y4 `4 L! B. k
The group delay behaviour due to AC coupling of the stages is different in
% a( \8 G6 {4 \, A O1 s tube amplifiers.
: Y7 [5 g+ b+ o; c9 S/ V! @ The “Bass Warmth” control allows to select the frequency range
4 ?+ w% r- M0 q4 m) P (10...200 Hz) within which the effect is active.
6 F( N* ~, ^( B[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.0 k% x$ G4 `* `# A4 _! C
Valve amps have a characteristic response, mid-frequency harmonic content1 A7 I4 _$ G' ^9 s& p" z8 Z
is emphasized.. C( P* i2 p- u3 c! }; x3 S) g/ {$ N
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.* W/ o( d0 V" a
The harmonics spectrum of a delicately overloaded valve amplifier is completely) @+ Z$ {4 ^/ Q/ z+ ?4 i( ?
different from an overloaded transistor stage./ j; U e4 K! j7 S& K- P. _
The “Gain” control adjusts a gentle overload while the odd-harmonics content
/ x/ y' y' H! D& | can be adjusted with the “Clip” control.
5 u# \, e/ a/ u& S5 W3 ~[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
8 `! t4 ^ R$ j7 O5 \ X- g dBu FS.
! m$ x9 l) m( ]1 `[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
) V: w+ V- ~& A2 _- g6 g+ O desired channel.
+ Z$ B" r& r8 k4 E7 M The “VALVE” LED is on when the Valve Dignifier stage is active. W$ r: C6 S2 N
[9] INSERT INSERT function.2 ?) `8 @4 U+ C: g; \ K6 V, r
First key pressure: INSERT POST VALVE, the Insert Send is tapped after8 G( I) k' `, ~! {' Q
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
j# q: ^' V N3 o/ Q and AES/EBU outputs.
% a$ `- M. X: o Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
! e1 F& P, M# _4 z' _: A7 ` the valve stage (display: “INS” and “PRE”); the Insert Return is fed via1 e( I5 M6 Z* |) Z& n
the valve dignifier stage to the Line and AES/EBU outputs.3 q3 z$ m- y9 U. d
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier+ E3 z ]+ L" m& c3 {
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
2 s, T! M8 P6 Z# H2 A receives this signal; display: none).5 z# B9 |1 D) z
Insert Send and Insert Return are electronically balanced and equipped with
4 D% ?0 s' ~0 B; x! E XLR connectors.
) i2 M' c: ~% {5 o2 y[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
8 h( {( R' L* | ADAT digital interfaces. Each input channel can be switched to one of the
/ C! Q, S& ~: X; t+ U channels 1...8 of the multichannel interface. If desired, also a mono mix is
5 b+ J& L- I Z } possible by selecting the same output channel for both input channels.# _% f: ? O9 p/ |" P9 d
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
$ t; ~% d. H* z+ h J6 x/ H$ ` channel.- F4 s; b2 s) {6 U
Can be operated only if the input gain selector is in Mic position. The2 P* }; d5 y" a* W0 L2 O" X3 u
setting remains stored when switching over to a line gain setting.3 K: U9 E7 c2 u5 Z8 y3 N
[12] Activates the high pass filter on the microphone inputs of the desired channel. M1 u) F, u* l* k' P! B X$ |
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
0 n; z7 r+ c# g j0 f% Q' f Can be operated only if the input gain selector is in Mic position. The; Y2 p* S' w. X8 L9 P
setting remains stored when switching over to a line gain setting.
, s! ]$ a, V* K( [1 L! L1 h$ a9 |9 e[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
/ F( h6 R$ G0 ]- D+ e, F! C0 _0 r1 P[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, E, b% ^0 G; D* J “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with ?5 B3 m8 g q% S
Noise Shaping (display: “16NS”) can be selected.$ B, c8 F$ }( |( ` \& V7 P# [1 R
[15] SYNC Selects the synchronization source for the unit. Possible selections are:* b" S+ j% L6 N
INT 48 Internal quartz reference, 48 kHz6 [& F0 d5 R2 p4 H7 F& O" V/ l
INT 44 Internal quartz reference, 44.1 kHz- A8 y8 V8 |( i( ~
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
& p. k# l& [) d3 V9 I AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
* k% m' _! w" K1 z0 z AUTO Selects sources automatically in the sequence AES-WCLK-INT
& V" _5 J1 Y! h, y& Y! E- C VAR Indication only, active if the external source frequency deviates from 48 or
; h! W- C2 b# w# T- F 44.1 kHz for more than approx. ±3 %.. g0 ?, Y# |9 p
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –% y5 s, F4 L2 t
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
8 L" N' P+ s) d4 q" |' y1 ][17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce- \; C0 ~3 c0 s* n3 h) n! K
the danger of overloading the A/D converter with short signal peaks (if( D$ L2 {, U- z: y) R+ ]9 I
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
* i5 k+ |$ J h( v allowing for approx. 6 dB reserve before hard clipping occurs
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