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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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! t* Q5 l- _+ b- v& _ H0 X$ _英文电子说明书4 ~) C4 p- A* A
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
1 o) }6 D" z( S default settings. The subsequent settings remain stored in a Flash EPROM- N8 H( j. O4 C. m$ p% b F5 \
after switching the unit off (unit contains no battery).
( I1 s) N2 C& n! F+ m[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
: e0 a' J x3 Q. k9 k/ U between microphone and line sensitivity setting ranges.4 N+ P0 {4 {* s6 H
Mic: Range –40...+20 dBu
- T: p, V: N4 w8 C8 u Line: Range +14 dBu, +24 dBu7 ]. U; ^9 T) n, M4 t& E; F
[3] Fine Gain Potentiometer for fine input sensitivity setting.( J" {$ \# S8 h. a
Range of additional gain: 0...+15 dB.
9 d! f2 l8 J. \4 d( ^3 V0 T9 b Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
8 ~2 M( |) N6 y* s* k; z% [ the dBu value of an analog input signal which causes a full-scale output of
9 D h. p8 a, q( E the A/D converter.
7 o4 v- V0 ]) z* r Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
, x! d2 d& \* c the peak level is therefore +16 dBu. The “Input dBu FS” rotary+ S; S! w, Y: U8 I% b( c
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
. |8 X% T' ]8 K- J! ~# q Gain” potentiometer [3] increases the gain by 8 dB.. p7 {5 h3 n% ~& O* R! ^) Q
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.; L* C/ _1 V' s8 c8 M( ^. r6 V
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
1 I+ g$ l6 p# ^2 }5 C4 @- d have more body; percussive instruments are less aggressive.
8 u) z! I8 }: w. z The group delay behaviour due to AC coupling of the stages is different in. V; l' `( P% ^! I; ~1 Z
tube amplifiers.( `( V D& X: d% s3 `$ V4 u3 s
The “Bass Warmth” control allows to select the frequency range1 f/ E3 @+ t% L. Y' J2 g
(10...200 Hz) within which the effect is active.
) M" M) I% K0 P/ A) y[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
' [0 b' c) i% w8 g' L S Valve amps have a characteristic response, mid-frequency harmonic content! g6 q4 P( @! W$ I" |0 ]
is emphasized.: q. B, u% I% m' H, r: O9 ]
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.0 H. z% v7 }" s# ^! U
The harmonics spectrum of a delicately overloaded valve amplifier is completely! a! S0 Y) r7 A9 g
different from an overloaded transistor stage.9 _' f" n3 Z+ G' @% R0 S: q
The “Gain” control adjusts a gentle overload while the odd-harmonics content* x3 K }/ }6 n# X6 N" x
can be adjusted with the “Clip” control.
- p2 j4 i. G3 j! y! b: y; V[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24$ @3 Y! z# R$ T1 i, m, c6 z( y6 S, h
dBu FS.
) F' e7 K* o- J+ V2 ?[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the: p1 C5 F; z# h
desired channel.
- H5 V) D+ F; f2 m; g4 {+ R The “VALVE” LED is on when the Valve Dignifier stage is active.. i3 T, v; e5 {9 a1 a0 N
[9] INSERT INSERT function.
+ P2 _3 n0 r) e$ r" f, V0 s First key pressure: INSERT POST VALVE, the Insert Send is tapped after
9 D3 t, B$ D& q4 b the valve stage (display: “INS”); the Insert Return is directly fed to the Line
) @. _" |/ {) O6 u and AES/EBU outputs.) \) l7 V! I! P
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before; x$ c# b* B/ K6 }
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via. c; O' L5 \* V, O0 k
the valve dignifier stage to the Line and AES/EBU outputs.
" V6 k" h% {* B( h3 E* r3 c- m Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
2 Z2 z# @1 b7 T stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
' Z9 E0 |$ k4 |. K receives this signal; display: none).
6 \: L0 Q8 c' P6 {, Z Insert Send and Insert Return are electronically balanced and equipped with
4 b2 R& U3 R- V: @ XLR connectors.
% X7 u) }3 ?) [+ I% q, l4 G[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or0 q H: s4 N! C: A6 n0 f
ADAT digital interfaces. Each input channel can be switched to one of the, `; }+ s' X! | C4 ?% e) u
channels 1...8 of the multichannel interface. If desired, also a mono mix is
2 n+ E0 l& o& k3 I possible by selecting the same output channel for both input channels.
# ~" s+ `/ a! \2 }+ R+ _[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone5 ^, k2 E3 j/ d0 h
channel.
! I& v) P& L/ |) q$ ^# @/ W. ] Can be operated only if the input gain selector is in Mic position. The6 {$ s3 I+ Z# y6 y
setting remains stored when switching over to a line gain setting. N V% b/ P! A- @4 j S
[12] Activates the high pass filter on the microphone inputs of the desired channel.5 m% u; o3 M8 ?2 Q/ o; @
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.9 v) R2 p# T* J8 Z" R' }+ W) _
Can be operated only if the input gain selector is in Mic position. The
5 J/ |, _5 N y9 f3 H setting remains stored when switching over to a line gain setting.
0 }( h8 n& L, J[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
1 B9 ?7 T5 z+ W) b[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:. t* X& ^/ o; o. v) p! E- [
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with) I$ l) ~$ E5 [. }% S4 K) U
Noise Shaping (display: “16NS”) can be selected.( _6 x k# c& I4 W: D6 R
[15] SYNC Selects the synchronization source for the unit. Possible selections are: u0 s# r4 l6 G" y
INT 48 Internal quartz reference, 48 kHz3 y, }, K2 v* Y5 X$ ^0 z, P' c/ b0 q. y
INT 44 Internal quartz reference, 44.1 kHz
: T* N8 D5 u, Q9 z2 t WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
, }) L/ Z' _& v AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
0 F( P3 S8 L* G/ M3 o8 J AUTO Selects sources automatically in the sequence AES-WCLK-INT% F( L6 c4 m) t! l7 i
VAR Indication only, active if the external source frequency deviates from 48 or& d- K/ i6 Z) ]7 ]; m+ I. E
44.1 kHz for more than approx. ±3 %.6 A6 L/ M( K. S2 R! [6 j. R; s* I
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –( f2 v6 \7 a5 f) @5 I
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
( q& ~+ h0 Y% c( d+ e[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
) ~( c. D, l9 U, a W the danger of overloading the A/D converter with short signal peaks (if
. @! k' o* i; R4 c/ o( X, B active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,4 {' O8 ~6 k. H) N$ D5 c" r( i$ J
allowing for approx. 6 dB reserve before hard clipping occurs
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