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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 2 D/ N- C6 x: X
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英文电子说明书. M" a$ U# C3 m- [5 D3 f. s
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory$ G. H6 h; M3 A
default settings. The subsequent settings remain stored in a Flash EPROM& s7 C5 \( G+ c
after switching the unit off (unit contains no battery).2 r3 r$ b. n; y
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position ^/ @( G# q( J$ X: ^! \2 [) |
between microphone and line sensitivity setting ranges.
* L( f/ ?* K. J/ ~8 Z) Q Mic: Range –40...+20 dBu
7 B: V2 Y7 o, F6 \0 u" `5 v Line: Range +14 dBu, +24 dBu+ E* _( `5 p0 Q3 a6 m! [
[3] Fine Gain Potentiometer for fine input sensitivity setting.5 [, X, M, j5 n0 z
Range of additional gain: 0...+15 dB.
1 l! [! D5 \, K2 Q Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
4 h1 B. m& p& l the dBu value of an analog input signal which causes a full-scale output of( E: o" P6 k6 V
the A/D converter.% a& v+ g% @) }% G2 D
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;2 B9 l0 _) c& x; W; K
the peak level is therefore +16 dBu. The “Input dBu FS” rotary7 b6 L8 _2 R; l, u4 t
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
8 j' b* j# R2 {2 ~" R4 K: j. o Gain” potentiometer [3] increases the gain by 8 dB.
1 Z3 ?7 h$ D/ ]/ E4 U, u[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.- T9 i* V2 y' B3 {* r
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals: e5 }9 ^4 u4 ^( [7 |; G
have more body; percussive instruments are less aggressive." |# b& M1 U5 \* u D
The group delay behaviour due to AC coupling of the stages is different in
* @* ^+ l6 t" v7 u tube amplifiers.
( Y% h' R4 w/ O# i8 c The “Bass Warmth” control allows to select the frequency range
7 y Y. v! o; ~; ?- D5 H (10...200 Hz) within which the effect is active.
' S |1 ?/ G$ R* w e[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
; q" y8 }" t- P5 m0 T% q' x# A Valve amps have a characteristic response, mid-frequency harmonic content
9 L2 @9 C3 F4 _# G, H- P0 m5 @ is emphasized.
( I% J1 f) d) i- m' Y. B0 W[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
4 r: y9 Z5 M# ^ The harmonics spectrum of a delicately overloaded valve amplifier is completely
0 \- l% B/ a" D* D5 @# E different from an overloaded transistor stage.* \% _* o* Y; e+ F8 v& b3 w1 j, Q
The “Gain” control adjusts a gentle overload while the odd-harmonics content
3 C8 Y. N1 I0 @2 j3 |2 H, r0 b/ \ can be adjusted with the “Clip” control.
+ |7 e7 G0 i- d8 k }, e6 |# y[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...243 k# K( k; W% l7 h& n
dBu FS.
. u l5 @. p& N! q8 N' d[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the. X5 x- o+ H- d
desired channel.
" G% L$ ~+ g( ~: a' l The “VALVE” LED is on when the Valve Dignifier stage is active.+ j% U* X0 Z* h* E3 Z$ c3 F% R: `
[9] INSERT INSERT function.* @* u# I1 t4 I, t6 T9 N
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
2 W3 Y8 G$ z& x the valve stage (display: “INS”); the Insert Return is directly fed to the Line
, J: ^ Z% C' q3 o+ n4 D and AES/EBU outputs.1 _+ }; B; L& Q$ [
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
: a! d$ `. W8 L# q( ? the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 Q; c) ]! M2 Z0 I6 a the valve dignifier stage to the Line and AES/EBU outputs.
+ B5 Q) {$ b! l% X$ p Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
1 E: x- A) Y8 A4 \$ n stage (if active) to the Line and AES/EBU outputs (also the Insert Send output. s {( [$ b' Y" G, }, }2 z8 y( c
receives this signal; display: none).
/ ^4 N) Y$ R: D+ D0 \' D6 s Insert Send and Insert Return are electronically balanced and equipped with
& J+ g. z" Z6 p3 T+ B XLR connectors.
6 q& T6 d/ O: X: h, V& q/ c[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or( a% o& J- `) w' }- B4 I
ADAT digital interfaces. Each input channel can be switched to one of the; g$ a$ X. E# F, D
channels 1...8 of the multichannel interface. If desired, also a mono mix is8 c# k2 S% m, @6 t3 ]) F- s+ Q
possible by selecting the same output channel for both input channels.1 _, b9 S) ]: N! f- h3 {% |7 `
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone; A- a! h2 t! h# N
channel.
' G0 B0 D1 ~" Z @& b R Can be operated only if the input gain selector is in Mic position. The
3 C( s" V0 H' `* W# J, X+ x setting remains stored when switching over to a line gain setting.5 E2 D" A3 y N, n0 T
[12] Activates the high pass filter on the microphone inputs of the desired channel.
& ?% ^) @ y1 V; F5 F Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
: m4 g' S$ V( ? Can be operated only if the input gain selector is in Mic position. The% Z6 L- D; O, x9 T( S
setting remains stored when switching over to a line gain setting.
9 t& t- i' ?7 w; T+ R1 M[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
; u( {" [1 s" h: U[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
! {9 I# q$ a# H5 M* S' h “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with6 U- r# ^! }; u" v0 A# |
Noise Shaping (display: “16NS”) can be selected.$ n3 {& o% B4 T# r) n! s3 t, a
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
W1 Y$ S1 R' l5 t9 F INT 48 Internal quartz reference, 48 kHz
v+ {. L A8 @0 @, g" v1 _ INT 44 Internal quartz reference, 44.1 kHz
+ _' T _" g: K9 |; X WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)5 s" Y* L3 e# o* W& g" S7 k/ {
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized), C8 }$ [6 h8 D- J# H% f- w
AUTO Selects sources automatically in the sequence AES-WCLK-INT
2 I) k- O3 N6 N% ]9 s( x5 F VAR Indication only, active if the external source frequency deviates from 48 or
- ` L; R$ M1 @9 I. j+ \: n 44.1 kHz for more than approx. ±3 %.
- Y+ I4 }& ^ {" F, y9 z[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
+ d1 O! Q$ G* ]6 Y either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
8 O3 c. {: O6 g a, \$ v8 w, |- C[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
: W0 r% L$ a9 X9 U5 o# B4 b% [ the danger of overloading the A/D converter with short signal peaks (if
8 |+ t6 s+ j3 j active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
0 g- P" B3 @2 L/ g3 U3 ]$ ~ allowing for approx. 6 dB reserve before hard clipping occurs' |% C8 x6 o! y
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