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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 3 m. Y0 C6 y3 S0 N; A; d
. q) ~5 |& X4 O$ ^, j5 `0 k4 g英文电子说明书 Z* [* l% s( ?, C
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
/ d: B' T5 P R9 X: A# o% l default settings. The subsequent settings remain stored in a Flash EPROM
n% [( S$ g# x% p- u; ] after switching the unit off (unit contains no battery).
. O H4 F* `" B8 c- v+ a' T& a[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
4 a2 q3 r9 ^# P between microphone and line sensitivity setting ranges.
1 c- O: l5 f6 I( r Mic: Range –40...+20 dBu; {+ h S) _8 x* f- B4 H5 F6 t, X
Line: Range +14 dBu, +24 dBu
, R' ^% P" h( @' `[3] Fine Gain Potentiometer for fine input sensitivity setting.
) \# O& q8 d. s% y1 B Range of additional gain: 0...+15 dB.
% A& c6 d5 r! H2 B# h. p7 J, V Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents% y( C& ?; N- k7 f# E+ `
the dBu value of an analog input signal which causes a full-scale output of
" U/ M: d+ B5 y! ~. p the A/D converter./ U' S% o8 K! w; a( Q# V! ] W; x
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;# m) q" w2 H" N' s% r/ w
the peak level is therefore +16 dBu. The “Input dBu FS” rotary! d Q1 M5 e7 S, D
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
5 Y) m8 O2 y3 w1 O Gain” potentiometer [3] increases the gain by 8 dB.2 D5 }7 W5 h r
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.* `: u1 C! P( P; I; |- R f
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals" \& B# a# ]0 k. U9 r
have more body; percussive instruments are less aggressive.
+ B3 N0 n" m, e& i- v The group delay behaviour due to AC coupling of the stages is different in! _1 v7 }' d+ C9 L" {3 y
tube amplifiers.
- e( [3 _! q: @* e, o The “Bass Warmth” control allows to select the frequency range
/ f5 {2 u- W$ | (10...200 Hz) within which the effect is active.
* @( k' J4 v( _ v) p- M[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.2 j X" S5 l1 _1 @5 G" v+ V
Valve amps have a characteristic response, mid-frequency harmonic content9 l8 D5 g, K: Q4 Y L! u: y
is emphasized.
+ j" Z: U4 n6 |; Q, s[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
1 w6 n3 o" k4 n1 ^5 K% R The harmonics spectrum of a delicately overloaded valve amplifier is completely
* M7 n# ]% O+ y different from an overloaded transistor stage.
; x1 f0 | p6 J+ ?2 b The “Gain” control adjusts a gentle overload while the odd-harmonics content J0 t, e/ S" z3 ?1 g- m
can be adjusted with the “Clip” control.% q6 I' }$ j0 L1 {0 E0 t: |+ t
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
" y& g. B+ G' b, o. L! V" x3 l dBu FS.
/ t# H0 s9 \9 V1 Y[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the& e+ E1 m1 d; r1 F
desired channel.% y- u3 v4 a8 u! j! P( Y1 t/ t: e
The “VALVE” LED is on when the Valve Dignifier stage is active.# O) x. j- O( T) G
[9] INSERT INSERT function.
% S2 [% ~! H0 ]+ G First key pressure: INSERT POST VALVE, the Insert Send is tapped after% U% I3 k1 M) q
the valve stage (display: “INS”); the Insert Return is directly fed to the Line) [5 r5 T' B% E9 f0 V$ r
and AES/EBU outputs.: b: S/ ]. W/ W9 w3 P% n
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before$ G; j( @& A1 u7 ]5 k; s. L
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via: K, c" ?' r8 d3 v# q1 A) S
the valve dignifier stage to the Line and AES/EBU outputs.) |, k/ u/ v0 k+ C8 O% y# z* y# V
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier4 z8 T9 f) Q' o2 ^
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output" q* z& F8 w( y
receives this signal; display: none).
, Q0 b3 ~- O7 d F) e7 _, i& s6 M+ l Insert Send and Insert Return are electronically balanced and equipped with5 S9 V3 @4 o$ u I5 x
XLR connectors.
) h& p7 x* r" S5 A' b& g[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or) k9 e" |, {3 H3 L9 {" B1 N s
ADAT digital interfaces. Each input channel can be switched to one of the
, s& t7 R; l9 b" I6 G. e( w% }" c channels 1...8 of the multichannel interface. If desired, also a mono mix is2 x9 v/ m$ M+ Q9 ?& @* x# v
possible by selecting the same output channel for both input channels.6 I# c+ I/ N4 S C: U" p
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
4 G7 v j- Q! J8 q A) r channel.
5 A! i4 T. L$ q8 x% ^7 z* W Can be operated only if the input gain selector is in Mic position. The. J3 U9 S" I' ^) x
setting remains stored when switching over to a line gain setting.
8 V* ^, z9 ] p0 d$ Y: k[12] Activates the high pass filter on the microphone inputs of the desired channel., A4 ^, S! N! a2 ]9 Z! C
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.* S. f4 V- q0 s% H- f6 V7 e
Can be operated only if the input gain selector is in Mic position. The
! U, C( _2 z/ j6 h* t setting remains stored when switching over to a line gain setting.
4 L8 h1 T+ [7 a[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
9 k- b( {% \ c4 R& V[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:8 L6 R7 z# ?/ M' L5 v
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
- h" A" [: j8 B3 t6 \" r4 h Noise Shaping (display: “16NS”) can be selected.
- J1 T1 |8 J! ], ~" F' @[15] SYNC Selects the synchronization source for the unit. Possible selections are:
) y5 z% a. _6 Y9 C% q8 r INT 48 Internal quartz reference, 48 kHz
$ ^* u; c3 J9 a& R- }/ k5 t INT 44 Internal quartz reference, 44.1 kHz4 N4 p% u, `; w; U! {
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
+ g& C& S4 }$ ~. ~$ }! ` AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
8 f& C A( q+ W) m @) w AUTO Selects sources automatically in the sequence AES-WCLK-INT
1 x, _; g/ I s. M3 O7 L, u VAR Indication only, active if the external source frequency deviates from 48 or
, K. A s9 M I 44.1 kHz for more than approx. ±3 %.
( D. N: s8 u( ^; o" |# O9 n/ T[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
& ^4 a2 S2 B& T2 y+ I" w$ k( b" W either permanently (display: “HOLD”), or with automatic reset after approx. 2 s." k/ f: v" [5 k9 A; |% z
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce6 N+ z# B0 a. b: R7 s$ |
the danger of overloading the A/D converter with short signal peaks (if4 h; V; m: q- k: r) f& o1 H, `
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
! m; ^; T4 O/ K6 K K allowing for approx. 6 dB reserve before hard clipping occurs
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