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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 ; l0 i& L6 w6 r* a/ y% v
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英文电子说明书8 }" L5 H3 y9 b, f' s8 X; T
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory7 z- \: ]8 u0 {# x& l2 p% k
default settings. The subsequent settings remain stored in a Flash EPROM
1 J: }0 R4 x( \ after switching the unit off (unit contains no battery).4 @& e- c7 {0 s$ T/ D5 I7 `" e0 {/ V
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position, u, Y: U8 [) i: X, Y8 K
between microphone and line sensitivity setting ranges.5 q1 w+ }# j+ s' I6 C
Mic: Range –40...+20 dBu! Y& T: P& m( d9 d
Line: Range +14 dBu, +24 dBu
) W8 g6 w% r3 q[3] Fine Gain Potentiometer for fine input sensitivity setting.
, t/ o4 a" \2 U Range of additional gain: 0...+15 dB.8 L( p: R/ y, W. o
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents% ?1 P* F6 A4 D( N' x# G; o
the dBu value of an analog input signal which causes a full-scale output of
1 S- u$ |, q# D3 `1 f( S+ W7 U' N the A/D converter.
! X8 ?+ l2 Z- d* {2 c$ {/ h* c. D Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
, q. c/ J2 ^) @9 | the peak level is therefore +16 dBu. The “Input dBu FS” rotary
& _$ `/ ^3 U t6 e+ a7 U1 Y switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
* [1 z& I/ e9 r1 S: D Gain” potentiometer [3] increases the gain by 8 dB.8 O) ]4 ]6 Z2 W% \7 ^6 B! r8 a% z
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
: I1 O5 ^" D' {) d& x0 N7 a[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
6 ~; f9 R) w- C3 { have more body; percussive instruments are less aggressive.
* e3 f& I% I. ^9 }( e The group delay behaviour due to AC coupling of the stages is different in2 t. u: y. `4 f4 _5 n1 U/ W
tube amplifiers.
9 G1 p% _( f% n The “Bass Warmth” control allows to select the frequency range
4 U9 a9 Y' |: j0 F: @$ Z (10...200 Hz) within which the effect is active.9 d/ ^7 N/ { W7 y/ m! _! r# E
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.3 R7 _1 F j1 ~0 X0 a2 M$ \
Valve amps have a characteristic response, mid-frequency harmonic content6 I8 ]4 i+ b* c% i% M( Y
is emphasized.; v. R: K, @- ^) r! N
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.5 R# k1 ~! Q s/ U) t% N9 o+ D5 V
The harmonics spectrum of a delicately overloaded valve amplifier is completely
2 o9 B) W O0 |$ h# _, d different from an overloaded transistor stage.
% M& {! O* O/ {) W6 m' Z# g0 g* i+ X The “Gain” control adjusts a gentle overload while the odd-harmonics content
5 A; Q, J4 Z$ V; y8 q can be adjusted with the “Clip” control.4 U N. ]1 ~1 Y. _& n$ _# B
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...249 `7 e; }0 I4 j3 `. v8 Y4 V+ U
dBu FS.
. M6 }( b" S: F( J[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
8 e- g, g# a, N desired channel.
" X1 S4 e m" a The “VALVE” LED is on when the Valve Dignifier stage is active.
" h2 K! ]. j; {$ Q6 _[9] INSERT INSERT function.
8 c/ C, e$ z' U5 z' Z2 v/ n First key pressure: INSERT POST VALVE, the Insert Send is tapped after
" {, p6 b6 c0 h. D# j+ q the valve stage (display: “INS”); the Insert Return is directly fed to the Line
3 |$ V* X: v# Q) k and AES/EBU outputs.( r# X* K* y4 t% {& t6 u6 X
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before# J3 P9 b) W+ z: J' v/ X; M
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via1 |3 U/ q2 s6 B: A6 ~" m
the valve dignifier stage to the Line and AES/EBU outputs.
; \' v! M) y: x# s- l2 h Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
2 ]# w" [" C* a9 ]: _8 C [& w stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
0 M( K1 `5 D4 V- Y receives this signal; display: none).
f% {/ W- V2 ?6 D) w Insert Send and Insert Return are electronically balanced and equipped with4 n) F5 r& v+ l: M7 P
XLR connectors.% I; k# w! v9 o: B) j
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or; F M) B) h. A/ U9 u. d
ADAT digital interfaces. Each input channel can be switched to one of the
2 K& S, @* @5 L7 S/ G: h- l8 v* ^ channels 1...8 of the multichannel interface. If desired, also a mono mix is
& Z# a0 p* k5 M possible by selecting the same output channel for both input channels.
, @0 y2 J) u }0 c! D+ v. V[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, C `7 R# y% o$ b8 _+ {+ l channel.
2 k9 _! G7 T P; ? i9 K Can be operated only if the input gain selector is in Mic position. The0 w4 \7 J! e3 d' N$ S' x" r
setting remains stored when switching over to a line gain setting.: Q2 t2 f: j3 w. D
[12] Activates the high pass filter on the microphone inputs of the desired channel.: ~$ s9 f- w; l) \) E, U
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
1 h! w1 n' D9 e' _ d+ _. ] Can be operated only if the input gain selector is in Mic position. The+ a# _0 b% S" O+ S+ K( i
setting remains stored when switching over to a line gain setting.
; V f3 H0 p' c# A: b! h[13] Ø Toggle key to activate the phase reverse switch of the desired channel.0 p; p7 [% _- @
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
# q; X. P0 X! Y, D0 A “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
+ v- S- k- \# a# W! I Noise Shaping (display: “16NS”) can be selected.
1 F( Z; G: c; X' Q4 Y2 V" X[15] SYNC Selects the synchronization source for the unit. Possible selections are:5 M7 m% |; S( q) ^: a7 ^4 t5 g
INT 48 Internal quartz reference, 48 kHz
) j1 K# K$ N* l7 {$ @ INT 44 Internal quartz reference, 44.1 kHz
# l% f- r k. s( p$ S+ i; f5 i @ WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
* k7 F7 Y5 E! y. X5 t AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)+ _0 n- J2 G* w4 E6 H
AUTO Selects sources automatically in the sequence AES-WCLK-INT
6 e, T5 c, _2 A VAR Indication only, active if the external source frequency deviates from 48 or
$ e) e2 F& z8 e7 j; a8 E, L I 44.1 kHz for more than approx. ±3 %.1 x9 Z; N r6 `! r7 k1 b
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
+ @$ c+ V2 D6 K, a either permanently (display: “HOLD”), or with automatic reset after approx. 2 s./ i4 S, z3 ?; J0 u
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce6 ?2 E4 F& F( f l, E
the danger of overloading the A/D converter with short signal peaks (if
0 B- O7 X4 F: r0 w# L& y$ p9 P! E active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,. H4 y2 j2 b) ~8 M7 C6 o+ L
allowing for approx. 6 dB reserve before hard clipping occurs$ W$ Q A2 n% k, {
0 [6 i0 U1 X6 ~8 T1 `7 x& W8 x
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