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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 . ]9 k$ u7 E6 z* \! h- n5 U
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英文电子说明书
6 n) ^8 T7 Z! e[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
. x! p; d- J/ Z default settings. The subsequent settings remain stored in a Flash EPROM
" ]8 \" m4 Z1 d9 a' u after switching the unit off (unit contains no battery).6 D& X) G0 ~( M! Y4 S p2 d
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position- h; F8 X3 r% j0 U1 O2 [0 m- `
between microphone and line sensitivity setting ranges.( \/ Y5 \% v1 ]% o
Mic: Range –40...+20 dBu0 }) F* Q2 _) N; [, i
Line: Range +14 dBu, +24 dBu
: K8 O' c6 v5 ^[3] Fine Gain Potentiometer for fine input sensitivity setting.$ H# X% \1 J, W0 G9 x) L$ j" g
Range of additional gain: 0...+15 dB.
) T/ J0 I+ ?! m% R8 w& d# _ Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
U4 _ d) W" B; ? c' p E the dBu value of an analog input signal which causes a full-scale output of
9 y( {* v# F6 `- g" N the A/D converter.
3 _9 t- p4 ]- E& | ^ Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
1 k3 B9 M& P) ? the peak level is therefore +16 dBu. The “Input dBu FS” rotary$ f/ w! ?$ A1 t8 {
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine) C( @2 e+ d- S$ q- j8 a5 G! d5 G
Gain” potentiometer [3] increases the gain by 8 dB.
8 ?8 w2 X0 ?/ k/ o+ n6 ][4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
0 C1 q5 p4 j9 p6 L[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals# r3 Q0 f) g( ?+ u$ X- U9 ]) Q3 }
have more body; percussive instruments are less aggressive., d- n7 i8 ]! [6 Z5 Q& j; k
The group delay behaviour due to AC coupling of the stages is different in
+ N0 I, N( i( o( ~. O tube amplifiers.
6 w! h! a% Q; B7 j: H" f) S4 l2 ] The “Bass Warmth” control allows to select the frequency range
* v0 G p- L; o4 x1 g: X3 J (10...200 Hz) within which the effect is active.
7 e7 V( q* \4 ^* d) g" l4 ]2 n[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.. O9 o- F( S* t9 H
Valve amps have a characteristic response, mid-frequency harmonic content
& x q: _( { P is emphasized.
! t( s' B T8 m2 @/ @[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
1 T4 C# I5 y& m3 M. u5 i2 |2 W, x The harmonics spectrum of a delicately overloaded valve amplifier is completely
* a4 T9 m) W; o: f different from an overloaded transistor stage.8 p3 A0 a0 f; q7 m
The “Gain” control adjusts a gentle overload while the odd-harmonics content
8 |& h4 Q0 A" M can be adjusted with the “Clip” control.! P( q* ?8 f- o5 S! j, @: j
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
& l* n6 d& V8 m* V8 U' Y; k+ X dBu FS.
% P3 K& n) q! r, ?; C[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
" w2 n3 O2 e2 m3 e3 T desired channel.% ]- }1 I) b# g5 Y$ j: `0 p; _8 J
The “VALVE” LED is on when the Valve Dignifier stage is active.# }2 r* {# r) ^9 n; C! z
[9] INSERT INSERT function.$ S9 z2 `0 {8 {8 L
First key pressure: INSERT POST VALVE, the Insert Send is tapped after- M- G; r* j" W) l. z0 t
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
! v5 b" m, T4 y# V' |2 l- ? and AES/EBU outputs.9 x3 B/ J2 G+ X/ j u& d2 o4 q! A: I
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before3 z! j2 n* `5 f6 [4 i, x
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via9 r" X8 T3 e2 g/ y: S$ @- ]
the valve dignifier stage to the Line and AES/EBU outputs." n" g" g% c6 n
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
& {- N# o* q* b% v% J stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
+ a: Y/ L8 q0 R: h A receives this signal; display: none).2 s" z' T s! q. l8 n$ ~
Insert Send and Insert Return are electronically balanced and equipped with4 J7 c' w; n9 F& b) b) s0 g1 E; _
XLR connectors.3 l' `7 b) m* X
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
( K# ^% {& v( }" s ADAT digital interfaces. Each input channel can be switched to one of the( I: N1 `+ L, d& r
channels 1...8 of the multichannel interface. If desired, also a mono mix is
( |9 i& _+ u/ ^$ u- S2 z9 q possible by selecting the same output channel for both input channels.
. v7 ~( o8 f' o7 O8 W[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone* l' e- {- c+ a
channel.4 L( d: X# a, f2 c9 @
Can be operated only if the input gain selector is in Mic position. The# I3 a, [- d6 Q( u4 v* J r2 ^
setting remains stored when switching over to a line gain setting.
; a, q6 ?, o% A! v9 V[12] Activates the high pass filter on the microphone inputs of the desired channel.
4 {/ @& X, ]* x" W# S$ N+ |( M0 H1 |3 h Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.3 a; D3 ~9 f( q* C
Can be operated only if the input gain selector is in Mic position. The
2 `0 W& J' y% E. X2 s' g setting remains stored when switching over to a line gain setting.
) I: P+ x" ]4 p+ o. ]3 [[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
6 G* f" K9 [: \1 s. k[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
$ v( A5 {3 g4 L “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
5 {+ n8 B- u3 [4 Q' p Noise Shaping (display: “16NS”) can be selected.: H3 V e) b0 O1 p
[15] SYNC Selects the synchronization source for the unit. Possible selections are:+ Q% s& J/ F) `% V& x
INT 48 Internal quartz reference, 48 kHz- R. A" V5 A! Q8 ~/ c& ]
INT 44 Internal quartz reference, 44.1 kHz2 A# a) H; N& w8 k# z
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)) ?7 m4 N( j d" a
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)$ } X/ F/ R; u, z9 P
AUTO Selects sources automatically in the sequence AES-WCLK-INT6 \ c5 k* U2 Y' J5 g; t5 ^# t |
VAR Indication only, active if the external source frequency deviates from 48 or
# {& s& C2 i% }2 t! _; ] 44.1 kHz for more than approx. ±3 %.( q8 R- p( Q2 Y, a3 _1 X
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –) d! @! V& ^2 h/ l9 l8 ~
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.1 y; `( j& {- f: h: y; Y& T+ f
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
6 [5 ?3 v. O2 A# M" W+ f5 B the danger of overloading the A/D converter with short signal peaks (if0 q9 ^9 K2 t7 y+ i
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
0 t) x* X! b2 \. m1 z7 i9 S allowing for approx. 6 dB reserve before hard clipping occurs G9 ?: J( \- ^, z. O
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