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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
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6 w3 d) k2 P/ [+ C英文电子说明书7 Y. B j7 Z1 K, K
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory3 [1 \! N4 Q1 f Z4 c
default settings. The subsequent settings remain stored in a Flash EPROM, A f- r$ F) L0 H$ l T( m# T
after switching the unit off (unit contains no battery).
( _$ v5 W( N: {$ w[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
: @6 s3 g/ B, G. [: J9 \ between microphone and line sensitivity setting ranges., C$ H0 F! T0 d# I! B
Mic: Range –40...+20 dBu
1 M: |! W: r- e8 b Line: Range +14 dBu, +24 dBu
7 \/ s0 h: I6 _1 [$ Y R[3] Fine Gain Potentiometer for fine input sensitivity setting.+ c6 u; t& J3 d. |
Range of additional gain: 0...+15 dB.; @# j4 V+ U6 M! F! d; f
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents( `! f7 ]3 J: x7 U; b
the dBu value of an analog input signal which causes a full-scale output of
$ _4 X9 N6 y7 b. O: F the A/D converter.; ~! L9 ^2 t' t) l% ?
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
5 ^4 q9 W# }& @" g& ? the peak level is therefore +16 dBu. The “Input dBu FS” rotary- i' S+ \# _6 L. m3 o( H4 D
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
" O! b8 W" g' i/ X" @- g! T. b" F Gain” potentiometer [3] increases the gain by 8 dB.
6 x; z! C2 z) B6 n[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
" N: @8 ~; z/ Q; ?9 J( K$ A) j[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals V5 I+ U! D8 k* q: P7 n
have more body; percussive instruments are less aggressive.8 O( l" ?' _7 Q' d
The group delay behaviour due to AC coupling of the stages is different in
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The “Bass Warmth” control allows to select the frequency range; M; U0 M$ x/ s4 r8 k4 o3 o2 v
(10...200 Hz) within which the effect is active.
7 ]; Q0 @ n& P3 U[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.0 V, k; T, u( B( u! r3 ?
Valve amps have a characteristic response, mid-frequency harmonic content- D! \( R: W; W$ ~4 J$ c3 M! e
is emphasized.; i- p4 x6 P; d* j5 O, e
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
- J; u; l9 G! B/ H- R' p The harmonics spectrum of a delicately overloaded valve amplifier is completely" Z @! T: M0 E8 \# S" g, G( p: v
different from an overloaded transistor stage.$ W- g% t9 F$ s9 L/ X6 O2 Y
The “Gain” control adjusts a gentle overload while the odd-harmonics content
7 J- H3 d+ a7 P( p" Z can be adjusted with the “Clip” control.
0 E2 J3 L, y( y[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24" z. V8 |: ^! H3 J
dBu FS.5 ]* K, W% j- p. Z& H! g- L
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the$ n( z. n; C3 I& P1 }/ W6 k) @
desired channel.
2 q4 B, c) P7 B' N: S( Q The “VALVE” LED is on when the Valve Dignifier stage is active.
3 q. T% f& [9 j6 ^# d; U[9] INSERT INSERT function.
0 d/ R5 \0 g m First key pressure: INSERT POST VALVE, the Insert Send is tapped after
# f- l! m! ?1 u the valve stage (display: “INS”); the Insert Return is directly fed to the Line
; U' C% D1 n0 Z: Z and AES/EBU outputs., I! `/ B7 m" p- Z& e" E
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
8 w" c& K9 ` ?, ]( m1 r" Q5 `* V6 _ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 O6 y3 T; T! e5 A0 ?/ L the valve dignifier stage to the Line and AES/EBU outputs. O6 z" X [' R( Z+ _
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier8 P( W+ F4 [& B' N5 b
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
( R4 d+ z1 e# o F5 l* @ receives this signal; display: none).$ ?- {- C# ~9 ]
Insert Send and Insert Return are electronically balanced and equipped with) b" ^" N$ I0 f8 O% h
XLR connectors.
3 m2 z6 L8 N6 R- a[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or7 H- U8 q8 _7 o- b6 W) `
ADAT digital interfaces. Each input channel can be switched to one of the7 { P. X+ d# J+ S
channels 1...8 of the multichannel interface. If desired, also a mono mix is
- ?. `3 Y3 z& c% G+ d possible by selecting the same output channel for both input channels.
% D U! ~" L/ I3 ]- p# ]4 L[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone" N1 i" S+ v, ^( p: d
channel.
! l& K5 `& B9 t/ c Can be operated only if the input gain selector is in Mic position. The
, o* N) |0 D$ {8 ~2 X setting remains stored when switching over to a line gain setting.1 P4 w) S8 l4 P: D
[12] Activates the high pass filter on the microphone inputs of the desired channel.
6 e3 {$ ]5 ~! v, D Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.5 l6 c( j- Y, v* y- B9 p/ q* @6 S
Can be operated only if the input gain selector is in Mic position. The
1 G. C% I8 E9 u/ g3 {: @, l setting remains stored when switching over to a line gain setting.
- @+ u' [6 M8 ~0 h, W# c3 M Z[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
, \1 W3 @# l+ O1 x) c# F! R5 v[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:3 \3 M) Z9 j% C2 H$ n; F
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
& }. ]% ?, I H( X! ~- c Noise Shaping (display: “16NS”) can be selected.
3 w' x. B0 N4 ], f, c$ z q( j[15] SYNC Selects the synchronization source for the unit. Possible selections are:
& @$ k" f4 B. }+ H3 ?5 M INT 48 Internal quartz reference, 48 kHz
' i( _: P* a4 }! R* c+ N7 v/ W INT 44 Internal quartz reference, 44.1 kHz
3 D' A* X" }9 }+ l7 J d WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized). Q" c; {' K/ u$ E& ~4 p' |
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)) U7 u% H2 @, d! O2 A' ^. W: \
AUTO Selects sources automatically in the sequence AES-WCLK-INT
" \; b u' u0 l* c VAR Indication only, active if the external source frequency deviates from 48 or9 t+ k# J7 z3 v+ R) I
44.1 kHz for more than approx. ±3 %.+ Z% N& w$ z( d0 @
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –* `4 e2 T) c( f, {1 d
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
' M& w7 i, i6 m+ N0 ]* X[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce: i7 F V8 N, n, _) Q9 O9 n& C& a
the danger of overloading the A/D converter with short signal peaks (if
& q1 \9 a6 p' F6 J active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,. ]: ] u2 M; O }
allowing for approx. 6 dB reserve before hard clipping occurs
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