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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 : a1 A3 f4 U, ~1 u7 I- a/ x
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' E$ _' z6 d, T- p# {( ?8 k英文电子说明书
1 d, h' e: \0 [7 D' _[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
0 ~8 l% w4 [6 I4 \* J) r5 N6 F default settings. The subsequent settings remain stored in a Flash EPROM, i2 s8 @9 b8 l8 |1 U6 K" a
after switching the unit off (unit contains no battery).
1 Z: C8 l/ t1 q3 |0 r7 I2 ~[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position9 @& W: {" W' z6 @+ Y- |, V* B
between microphone and line sensitivity setting ranges.
3 l6 t* D1 X" i1 d3 E+ |: T/ f3 Z Mic: Range –40...+20 dBu
; E/ s: ]3 l7 D6 x3 ]$ ] Line: Range +14 dBu, +24 dBu
8 ^( f$ r7 E. `[3] Fine Gain Potentiometer for fine input sensitivity setting.2 C# V. M, Y$ S: ]: ]& R* }9 w
Range of additional gain: 0...+15 dB.
: Q" b0 H$ |2 x" B* x) J% i Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
0 U6 K1 L* @5 J9 X the dBu value of an analog input signal which causes a full-scale output of
% U0 d! Q; ` v; e' F the A/D converter.! K& J" @9 {- y2 f0 f5 s5 ]7 I6 S# d
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
: |7 T. ^7 N+ f+ x/ V* P the peak level is therefore +16 dBu. The “Input dBu FS” rotary8 m" b5 S( Q3 J" o, S
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
) }5 O5 |4 ]& D7 U1 I/ d: ~% C) ^) q: k0 ^ Gain” potentiometer [3] increases the gain by 8 dB.1 x; f2 l" [2 F
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
3 L3 I5 \3 p& N) q[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals" r' y6 w7 A$ P% t
have more body; percussive instruments are less aggressive.
7 Q/ q3 p. q8 w/ M9 O The group delay behaviour due to AC coupling of the stages is different in
: ~% F$ ?6 P+ u4 ^ tube amplifiers.
6 `- W/ x9 f) ?$ ], G* V The “Bass Warmth” control allows to select the frequency range
& ]: W- [ E% s1 x6 t) M& h (10...200 Hz) within which the effect is active.
4 _8 C" ^ K. w[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.! u2 |4 T+ f& O7 X2 \! c8 f0 N
Valve amps have a characteristic response, mid-frequency harmonic content
- ]: X5 H" d' n V: B+ \4 z is emphasized.
2 h) X: F/ | x% o2 Q[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.: |8 h! h- |1 @- L4 r. V7 r
The harmonics spectrum of a delicately overloaded valve amplifier is completely
4 \% T9 ]$ I" m9 C6 w- h different from an overloaded transistor stage.' N u) {8 `$ Z1 E3 A9 ~/ F1 x' S
The “Gain” control adjusts a gentle overload while the odd-harmonics content
3 n4 ?& A" c; ] can be adjusted with the “Clip” control.; g2 z9 U/ Y* B% C: s% q
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
7 [8 F) s( X0 d! E dBu FS.) O- [9 I5 Y" p9 @
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
5 y* x9 F. |5 V& \# [6 x desired channel.
6 v% ^) X6 {( D The “VALVE” LED is on when the Valve Dignifier stage is active.
$ Y7 C" e1 t' }! Y+ \[9] INSERT INSERT function.( l# t7 f, f C' {
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
8 k- L" K8 s( h the valve stage (display: “INS”); the Insert Return is directly fed to the Line$ i) G2 C6 f+ `& A
and AES/EBU outputs.; L, l$ C {2 v" H8 U1 h
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before/ v9 ?0 F% K" s! N( }4 E
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via; N" [- y; y* Z0 ^8 p/ p3 ]
the valve dignifier stage to the Line and AES/EBU outputs.4 k K% h" H8 W# `0 ?6 h
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
! W# @- ?9 z6 }% |9 f( O stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
/ t$ ?- W; f( ] receives this signal; display: none).! l% J# x) T* X& L; d6 m4 M
Insert Send and Insert Return are electronically balanced and equipped with7 ^& C" C) P- E( W0 y4 @2 @
XLR connectors.0 Y: L' t; v! o2 r7 Q
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
4 Q9 J- ?6 E C8 R9 ~3 L ADAT digital interfaces. Each input channel can be switched to one of the' C7 J1 Z- e3 N/ z9 t3 U
channels 1...8 of the multichannel interface. If desired, also a mono mix is
, R0 @% m1 U& l9 T( M5 [ y possible by selecting the same output channel for both input channels.
- ?7 [0 r$ n. n[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone& R% U; h$ P' K% v( z2 M/ P
channel.
7 i9 q: b0 p8 u2 q, b Can be operated only if the input gain selector is in Mic position. The$ t4 [5 L+ J, Q# S, ~4 k
setting remains stored when switching over to a line gain setting.
" H; n- G) _' j[12] Activates the high pass filter on the microphone inputs of the desired channel.
$ g9 P, O" v+ h7 s* J9 q& ` Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.3 J! X& d4 @, l. I' L7 O: ~
Can be operated only if the input gain selector is in Mic position. The) [7 E9 y7 P# o, f. H3 J
setting remains stored when switching over to a line gain setting.; [; c, q3 ?" d% u/ d
[13] Ø Toggle key to activate the phase reverse switch of the desired channel." N2 R7 t" i% a& D
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
" l. P ]$ y: p/ j8 r$ Q- w# `& ] “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with5 G3 t8 ^$ M- T; E: S9 }2 I
Noise Shaping (display: “16NS”) can be selected.
y# \4 W I9 a+ v9 C" k0 [[15] SYNC Selects the synchronization source for the unit. Possible selections are:, G1 a9 F# X* h/ _$ N F
INT 48 Internal quartz reference, 48 kHz& I, |2 a3 a) g0 ]' b0 {" F
INT 44 Internal quartz reference, 44.1 kHz
" v0 S# {8 W& w8 l' q. B- W6 r WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)+ _- d* j# Q, V2 T
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
' ], |' h- O$ e0 w; u8 C0 } AUTO Selects sources automatically in the sequence AES-WCLK-INT
3 N9 }. x, v4 Y# M8 K VAR Indication only, active if the external source frequency deviates from 48 or
. X- L, ^* D# [ 44.1 kHz for more than approx. ±3 %.* V* G4 A, z7 c: u% j6 }
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –$ c5 S: @/ U( j# c& q. b
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
- o+ }5 F( ?" Q+ o# I$ f8 P[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce) e3 G5 O1 x4 X1 B# [: d8 w
the danger of overloading the A/D converter with short signal peaks (if, T2 T( c# s+ D; e8 [0 Y% V# k: P
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
4 ^, _" p- T9 Y! e3 I allowing for approx. 6 dB reserve before hard clipping occurs
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