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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 ; g: m0 E8 W! |; ]$ p8 e
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. G8 g8 H* j1 N: e% N- b英文电子说明书
: P! t% t" x! ^% y6 p$ V8 l1 ?[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
# u; j8 w L5 [: X& U! g/ [ default settings. The subsequent settings remain stored in a Flash EPROM
" ]: h% ^2 t- Z B; W" Y" p after switching the unit off (unit contains no battery).% A! k% M: p7 J5 X" j. c, T
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position! o/ f) b9 W. k0 `/ l
between microphone and line sensitivity setting ranges.3 b2 m( K" Z+ Q5 H
Mic: Range –40...+20 dBu7 e* k- |- `9 p: N4 ?* z6 t' X. ]
Line: Range +14 dBu, +24 dBu
- _' c3 d5 j$ S# R4 g* J( F- t2 ~8 ?[3] Fine Gain Potentiometer for fine input sensitivity setting.
6 [# b# W: \+ x7 n. s) R- q4 q Range of additional gain: 0...+15 dB.7 _$ \5 r( Y& z4 K$ e8 C, @0 q0 W$ m- x
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
3 S0 p( S, _' @2 L0 a the dBu value of an analog input signal which causes a full-scale output of( I4 @) X, g% p* i2 W6 y1 n
the A/D converter.
% | J/ y1 _, S Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
. D& ^; g( H8 Z: N% Y the peak level is therefore +16 dBu. The “Input dBu FS” rotary: x; `2 \5 y% G' c
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
0 Q d" w- |! Z Gain” potentiometer [3] increases the gain by 8 dB.
( K- ~, p2 r2 N1 f[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
5 S! B, e: W7 \[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
1 A1 T1 x* C: v0 I9 F# l8 f have more body; percussive instruments are less aggressive.; b5 p$ W+ j4 Q0 O% \
The group delay behaviour due to AC coupling of the stages is different in
9 z$ l$ D6 B! @; M tube amplifiers.: O! O& X/ t9 k2 c6 b: ^* E% ` Y3 o2 O3 W
The “Bass Warmth” control allows to select the frequency range! n& Q a( \& K" Z. n M) Z+ R
(10...200 Hz) within which the effect is active.
/ ?3 X$ F/ k$ z7 R) d! A5 d- W[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.% r" k5 }" V9 G! Y' a1 Q
Valve amps have a characteristic response, mid-frequency harmonic content
1 F6 ?9 w9 x: M" A) x4 k0 a7 A is emphasized.
* t% X/ R! r: Q$ j- _5 g. j2 I1 L[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
1 Z a4 D! y7 Y8 R6 H. Y* T The harmonics spectrum of a delicately overloaded valve amplifier is completely
- \" }4 O: N$ l% {7 I different from an overloaded transistor stage.5 F8 V2 w) p0 Q
The “Gain” control adjusts a gentle overload while the odd-harmonics content
w D' D: r' u! M: t+ b8 E can be adjusted with the “Clip” control.$ [( U7 d4 q5 U3 ^: e4 D4 ]' I' @
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
9 p5 I. B1 d5 _& d1 T# P* N dBu FS.% {8 }" O( ], Y" g
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
z1 z6 v M7 z% h0 W6 `" b desired channel.
. c% h X) s+ r8 A The “VALVE” LED is on when the Valve Dignifier stage is active.
! W1 ^) V" W2 Z$ t[9] INSERT INSERT function.; n( h0 f# Q, f" [
First key pressure: INSERT POST VALVE, the Insert Send is tapped after' d1 Q6 J/ V0 j7 c2 C7 K$ N5 R
the valve stage (display: “INS”); the Insert Return is directly fed to the Line% L) P) @3 B& l9 m
and AES/EBU outputs.3 q) p+ b' B$ M C! x
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before- ]- E1 Z- A- |* D
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
& X) ?* @/ Q, |, [0 r8 T the valve dignifier stage to the Line and AES/EBU outputs.
9 P, I M* z' F8 b5 ?- _ Third pressure: INSERT OFF, the input signal is fed via the valve dignifier; K: H( X4 U; E6 L
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
8 w$ J% j, n, \+ W/ P; {# I receives this signal; display: none)., L$ B: k- R! @+ ~% i; r
Insert Send and Insert Return are electronically balanced and equipped with
# q3 [3 @2 Y0 l& m" T XLR connectors.- U# w' Q6 G% t, w+ u
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or6 |4 x) W5 z, p* n
ADAT digital interfaces. Each input channel can be switched to one of the$ _& x% ~/ R: K
channels 1...8 of the multichannel interface. If desired, also a mono mix is1 r- w4 L4 n2 `2 n
possible by selecting the same output channel for both input channels.
$ A5 y. S7 }- m2 @[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone! X* b x& r, I- }. {
channel.! r/ @8 S9 E" |) P) d& s; R
Can be operated only if the input gain selector is in Mic position. The* \6 B+ G/ d! c8 j2 s* R0 D
setting remains stored when switching over to a line gain setting.: W& s7 L! S; _+ R& t% p/ N
[12] Activates the high pass filter on the microphone inputs of the desired channel.) f9 ]7 ?% p* l3 S5 |
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
; x+ [; J6 a- C Can be operated only if the input gain selector is in Mic position. The
c- t: k! C/ ] setting remains stored when switching over to a line gain setting.2 H4 j/ l |3 H8 q8 \
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.& c& M; j& L7 ?& `0 a
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, \& x" L2 r+ L- q# ?! ~6 I “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with' C( L: D! z! d( ~4 U/ p
Noise Shaping (display: “16NS”) can be selected.! R4 u5 Q ?- W' Z
[15] SYNC Selects the synchronization source for the unit. Possible selections are:1 ?5 q9 k1 H) U% H
INT 48 Internal quartz reference, 48 kHz& e+ j+ F4 M0 X" A
INT 44 Internal quartz reference, 44.1 kHz
4 n V9 k5 C8 d# S3 s; a! {+ N WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
, H+ O. R& a1 @* C+ S AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
7 h$ ^( e @$ Z) l4 @* z" a6 _# { AUTO Selects sources automatically in the sequence AES-WCLK-INT3 F" Z$ j. Y a
VAR Indication only, active if the external source frequency deviates from 48 or9 C6 Y5 z3 a! P! ?& G
44.1 kHz for more than approx. ±3 %., G2 p- `" w9 T5 H! @, d' C* {* E
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
* ~. N7 o y9 M2 Q6 o either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.- S! o( [3 k& b6 @$ e0 ]
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce+ ?& p7 J" U/ C( W1 Z4 u9 o! _
the danger of overloading the A/D converter with short signal peaks (if1 V9 V! f# ^; S8 [* u3 z! y
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,* z* ^0 g, J9 a. K
allowing for approx. 6 dB reserve before hard clipping occurs
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