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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
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; d* e# O: i4 N9 Y" H2 C( v英文电子说明书8 R9 ]$ c8 w- @# O0 D( w2 R- n2 O
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
( l" p* S2 W3 u0 t% W1 h, [$ i, c default settings. The subsequent settings remain stored in a Flash EPROM+ R x: J) h* f `) D4 a9 B
after switching the unit off (unit contains no battery).
4 q4 q3 U5 A4 p/ F7 V" T7 j[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position* O: i/ d+ y4 t0 W( z/ j j0 S9 N
between microphone and line sensitivity setting ranges.+ s* b3 V* B- K' z
Mic: Range –40...+20 dBu
. B0 @4 b7 `; S8 a: P Line: Range +14 dBu, +24 dBu
: H* X# G0 Q0 v+ {, V& h4 P5 U[3] Fine Gain Potentiometer for fine input sensitivity setting.
7 h- E5 f& O* s% m# D { Range of additional gain: 0...+15 dB.. b/ H$ i. f3 g7 U) A% ]
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents4 ?1 c* P0 U& ~# H7 {2 ]
the dBu value of an analog input signal which causes a full-scale output of' Q x* F7 A+ g, Q/ s! s {9 y* Z0 p
the A/D converter./ |; D' I" y U8 [) Z( ^: c
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;! ?0 r* J' K& L, X7 C8 ?# a
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
, b J2 n8 Y U5 j5 u7 W& { switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine. G `9 c' O5 q7 p
Gain” potentiometer [3] increases the gain by 8 dB.
: A5 l; D) E3 j* I0 P- W8 k5 ]8 D0 M[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
% A$ {$ b/ g. l; Y0 w3 y! D( {[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals5 |' W6 ^# L2 i% ]+ e( Z
have more body; percussive instruments are less aggressive.
# s% j, v6 [: v/ t) q' X$ ~' J3 i The group delay behaviour due to AC coupling of the stages is different in
" j! |# I$ S4 s- M tube amplifiers.
. v/ M. G; R3 b' i: n$ u, t. e2 n6 W! w The “Bass Warmth” control allows to select the frequency range
2 ^0 h* N; X6 N' G, e0 p* h (10...200 Hz) within which the effect is active.
% ~% ]; c c0 E1 l- D[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.$ ^7 Y" Q& t. M
Valve amps have a characteristic response, mid-frequency harmonic content
h& [' }8 ^% U3 e is emphasized.
" L1 o* x5 W0 I* A2 r! s! `[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
+ s; t% f7 u8 P$ [) ] The harmonics spectrum of a delicately overloaded valve amplifier is completely* `9 h1 v4 w7 D0 w
different from an overloaded transistor stage.
Q2 F l3 ~% {/ F4 M The “Gain” control adjusts a gentle overload while the odd-harmonics content
" I+ R7 S* W% t2 |5 |/ [* ?' U can be adjusted with the “Clip” control.
& }7 U- q1 |" ~2 B( W[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
, p$ V( H1 l& H7 c5 z! d' U dBu FS.
2 Z' Q f6 R$ s# C9 |0 Z[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the+ m2 S1 k/ S% a/ e3 q1 t
desired channel.
1 ^' K' I, }& T' W# [ The “VALVE” LED is on when the Valve Dignifier stage is active.
: o5 n) n, y: T/ I% k5 j( \5 i[9] INSERT INSERT function.
" t4 l% I! d, S First key pressure: INSERT POST VALVE, the Insert Send is tapped after$ S' J/ G0 O' u, g
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
, w0 ^9 D A' p3 l; P9 q0 h; h and AES/EBU outputs.
/ C" V, z5 b4 |# l ] Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
7 {; s6 h1 I& b3 T% `/ i3 w the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
! l1 f+ j Y$ q2 B A the valve dignifier stage to the Line and AES/EBU outputs.
' c. M D! k/ j- I, O Third pressure: INSERT OFF, the input signal is fed via the valve dignifier. \6 J9 [8 p# M$ H5 ?! c1 J
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
# L u. O) C+ ^* k6 M+ n& t5 ^ receives this signal; display: none)., H! i: L1 y8 l, w$ w
Insert Send and Insert Return are electronically balanced and equipped with" l; B9 D0 j5 ^/ _0 j, j& a1 l. o
XLR connectors.& Q3 j' {3 i: U1 t- H+ o
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or" v, P+ _) p1 w( h
ADAT digital interfaces. Each input channel can be switched to one of the
7 F0 Z# }1 p& w3 F' N channels 1...8 of the multichannel interface. If desired, also a mono mix is
, `" V% Y1 `) C0 c+ c. J, m8 Z possible by selecting the same output channel for both input channels.( m7 C) G& X) v, e2 j+ n$ S6 [
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
3 g# u' y- t0 R4 W) e4 n3 f1 o channel.8 h/ C' \" |8 l& B6 K6 m v
Can be operated only if the input gain selector is in Mic position. The
. v- `" y s& T, H' M% x# }# m8 d setting remains stored when switching over to a line gain setting.
8 l) W: F6 u2 {! |: i! {2 u[12] Activates the high pass filter on the microphone inputs of the desired channel. h1 ~; ^' J1 k, C
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.( e8 Z+ J7 Y: i% z5 l1 e+ ]- \: [
Can be operated only if the input gain selector is in Mic position. The
m" }4 p( n% [# z( E/ w setting remains stored when switching over to a line gain setting.
8 M' i& r F" e5 |; W[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
! l9 q e/ t! L* N7 d; t Y[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:: x/ T3 K. z/ }% m, T. f! ?* x8 Y
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
5 d8 z. F" K' O( _- B' m5 c Noise Shaping (display: “16NS”) can be selected. ] |: z: a V }! [
[15] SYNC Selects the synchronization source for the unit. Possible selections are:/ f* Y1 _% ?# x' i3 V V% F
INT 48 Internal quartz reference, 48 kHz
. x1 [1 w. K4 C) B5 { INT 44 Internal quartz reference, 44.1 kHz' y' {/ z) c! r9 I, X) F% j
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)( |, v! c' H/ p* v5 Q* K
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)$ |( ]# Y ?$ Z: N8 y& }/ o! f
AUTO Selects sources automatically in the sequence AES-WCLK-INT
{( _3 D/ k% U( G( a VAR Indication only, active if the external source frequency deviates from 48 or
2 U6 q: H5 O5 c# a4 D: @& e 44.1 kHz for more than approx. ±3 %.5 Q! r; V* g8 k5 ~8 V5 P
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
2 M" s1 S- o) u! C8 |: F2 W either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.' \3 e! T* k; l+ f- O& `, [! L
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
, y6 h! r/ C6 I" ?: V the danger of overloading the A/D converter with short signal peaks (if8 r2 ~9 D7 m0 B6 i/ M/ T9 H
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
. b( t2 v1 w% k9 ~: V allowing for approx. 6 dB reserve before hard clipping occurs# t. F" B: o' h$ Q+ ]) P# I4 D
, B; {/ ~% G# p6 b
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