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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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' ^; w4 n5 Q+ i: y英文电子说明书7 A4 V! B0 {2 @0 T S y# [$ I
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
1 u% G& j! \: G- M3 m0 A9 w5 Q4 _ default settings. The subsequent settings remain stored in a Flash EPROM
1 D- H1 e& _0 Y6 c! z" o3 R after switching the unit off (unit contains no battery).
* u2 d' z) q* S[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
* n2 f4 b4 X& `6 x between microphone and line sensitivity setting ranges.* G( K( g; w1 ?
Mic: Range –40...+20 dBu
: K8 _& @" N6 W( w" g/ Z( B# m Line: Range +14 dBu, +24 dBu+ \& V" d" Q- o6 [7 H1 a
[3] Fine Gain Potentiometer for fine input sensitivity setting.
6 t. H9 F6 @+ h% m) D; p Range of additional gain: 0...+15 dB.
3 X- p! Y0 s X: z0 z0 v% J Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
' R$ k5 ^& ?8 I5 g# N, ?# \ the dBu value of an analog input signal which causes a full-scale output of
5 d- b& _/ e# g4 j( g the A/D converter.
& R# i: W& F/ H4 @3 F+ J6 F Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
8 ~" N; a$ p _/ C the peak level is therefore +16 dBu. The “Input dBu FS” rotary( R( b4 T8 o+ ]& t' ~% k
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine1 |7 |2 X0 v! {1 _
Gain” potentiometer [3] increases the gain by 8 dB.3 B" v, h3 b5 z+ N* }+ V4 ^
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
) E2 v& k* [& x3 E' |) @% f! K& z9 Z[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
; M8 P3 V. P& l6 @ have more body; percussive instruments are less aggressive.$ \9 _9 c& @( w$ e# I9 q9 e
The group delay behaviour due to AC coupling of the stages is different in* X# t$ A" H* f5 n$ z
tube amplifiers.' ]" x- ^# G8 D0 m. N+ }: O
The “Bass Warmth” control allows to select the frequency range/ A; V; H- W; d4 |0 N9 y3 x6 P
(10...200 Hz) within which the effect is active.. |: [% x& S1 [/ i: J
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments., l |+ L6 ^1 f& q, b
Valve amps have a characteristic response, mid-frequency harmonic content
, E9 U8 o+ ?- O" | S is emphasized.+ n; N3 l) \# O: _- [
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
" p0 \; ]2 e( X: z7 ]7 _" Y The harmonics spectrum of a delicately overloaded valve amplifier is completely9 A. L4 l( R8 `( G
different from an overloaded transistor stage.9 Q( m% b4 m i
The “Gain” control adjusts a gentle overload while the odd-harmonics content1 [# J! t! Z: W2 y' v
can be adjusted with the “Clip” control.
; f9 K6 \2 o! K8 q$ s- z8 R L[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
4 f2 c: Q8 O( Y( H; r1 z dBu FS.
$ \$ X' A4 D1 ?) H# l[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the! | B; }% ~: s$ Y! G: K
desired channel.0 v Z, d5 Z2 z5 w4 D. A* O
The “VALVE” LED is on when the Valve Dignifier stage is active.1 D5 H2 {/ W8 ~/ Q% `
[9] INSERT INSERT function.
5 ]9 P, P: Q/ F0 ]: O' u m4 f First key pressure: INSERT POST VALVE, the Insert Send is tapped after; t4 C o# k% Z. b- T+ K
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
2 E5 V8 B4 {" B( {" J and AES/EBU outputs.3 |$ s: ^$ ~% h2 Q
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before& A1 ?$ G$ i2 w9 _6 t$ u0 M
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via9 B( f' H# ?! z7 B# |; a3 F, t) x0 C
the valve dignifier stage to the Line and AES/EBU outputs.
& t1 V3 E4 A/ M' Q) O4 [! e% \ Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
4 S/ C& H: i% h, F stage (if active) to the Line and AES/EBU outputs (also the Insert Send output, \. e+ b* E+ J
receives this signal; display: none).' u: ~# z0 a& C
Insert Send and Insert Return are electronically balanced and equipped with9 k$ o1 V, h! L3 E1 U* h
XLR connectors.
6 @0 }, ^$ t' D; A- f[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or1 m0 e6 c5 g7 N7 ~ U* k4 l3 D% {) e
ADAT digital interfaces. Each input channel can be switched to one of the
, b* H" h4 ~! c0 m7 [; ?! R A/ S/ n y channels 1...8 of the multichannel interface. If desired, also a mono mix is2 D9 M8 X: l" [/ N
possible by selecting the same output channel for both input channels.
; d+ ~, S, G( H% h& }) T$ D[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
% O( b7 o" S4 { n2 S$ S channel.* N; t$ ?+ p+ O, O6 l/ D
Can be operated only if the input gain selector is in Mic position. The
6 M- t7 `, P1 _ s- _& l* q setting remains stored when switching over to a line gain setting.) ]2 f o5 F- D8 |* n9 P; F
[12] Activates the high pass filter on the microphone inputs of the desired channel.
" x% Q: }3 L2 \) P$ L: P+ a L2 F Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.! K+ u% x; a* z3 n
Can be operated only if the input gain selector is in Mic position. The$ a8 t9 h8 h6 ]- ~6 K% A0 X
setting remains stored when switching over to a line gain setting./ g6 R: t6 Z9 ~: F6 A
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
; e/ ]7 t) j: ]" L j* a! V/ D. k[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
- R( B) K5 ?! Y' a5 M- u; D “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with* _( [' c' t$ G: Z
Noise Shaping (display: “16NS”) can be selected.
* f7 B {; `# ^, D3 p" C$ m[15] SYNC Selects the synchronization source for the unit. Possible selections are:) \5 [- }, c* V5 X5 ]
INT 48 Internal quartz reference, 48 kHz; J/ N& U; o; @9 S/ H/ @- Y0 u
INT 44 Internal quartz reference, 44.1 kHz
/ O. O+ x7 ]# K: g WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized): Z' q8 P# r% o2 z$ z( p
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized). Z0 z8 b( k! r0 k, A
AUTO Selects sources automatically in the sequence AES-WCLK-INT
9 ~5 o8 J: ?) }$ i VAR Indication only, active if the external source frequency deviates from 48 or
/ Z* B, d; F. g2 _/ [ 44.1 kHz for more than approx. ±3 %.
% W* |" L, ~3 j5 s[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters – `0 E6 q1 z6 S/ @9 a& `* U" o
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
3 v5 f9 B' W4 H# t: D: C[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
+ U6 Y- @3 \/ C: }* y. F the danger of overloading the A/D converter with short signal peaks (if9 {: c! Z( ^5 g* P1 M2 u+ i
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,+ a8 q7 i+ }, D1 {4 D* y$ o
allowing for approx. 6 dB reserve before hard clipping occurs
+ }' f0 d, @$ z+ x A9 X [8 { i, @: S7 G( F
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