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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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( i+ Y4 Z! \* w$ m3 z- J, }英文电子说明书
4 e# h( H* Q4 p[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
0 Q/ x1 }2 |6 Z! g6 g" Q R default settings. The subsequent settings remain stored in a Flash EPROM
4 k3 L7 |3 c9 ~9 b, D" ?! i after switching the unit off (unit contains no battery).
6 E# R( d3 z- c; q" h/ S) j3 t[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position' O( O$ k) Q2 u4 w4 b
between microphone and line sensitivity setting ranges.9 g1 s1 X4 {$ k" I3 Q3 A
Mic: Range –40...+20 dBu: |# l/ ~7 B* v# n
Line: Range +14 dBu, +24 dBu, x9 C' x, y8 A% s t
[3] Fine Gain Potentiometer for fine input sensitivity setting.
3 I, n3 d9 u) R; G Range of additional gain: 0...+15 dB. }& T1 g& Y/ b
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
( `, ?; Y* Z; P& t$ o4 a the dBu value of an analog input signal which causes a full-scale output of! v8 i% _7 D9 z9 b2 W5 o
the A/D converter.
4 g. V( L7 c) _. n Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;' [- K% g G$ y$ o( W: J" Z+ h- b
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
$ j7 o" D) ~3 [ switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
3 i9 h$ l! M+ P: P4 s Gain” potentiometer [3] increases the gain by 8 dB.
# k5 F8 _2 P" @( F! L[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.# w: o- B5 _6 f
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
2 Y% R( p7 P# v/ x have more body; percussive instruments are less aggressive.( n3 j4 `$ R$ r2 V: O3 j
The group delay behaviour due to AC coupling of the stages is different in
2 f6 h& U% N' I! i* j tube amplifiers.
8 g( X& b! U$ @& Z/ F- M The “Bass Warmth” control allows to select the frequency range
3 |6 v9 l. V) R9 u* H0 L9 V) N* q6 k+ } (10...200 Hz) within which the effect is active.& ]: T0 }. {1 V B" I
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.& L" k2 t" t. K4 S
Valve amps have a characteristic response, mid-frequency harmonic content' j# N/ [+ h. a5 }* c
is emphasized.
. K# o- m! N, v; T& N' f[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.& b' K. v2 ?/ [9 } ~4 E+ i; r# Y
The harmonics spectrum of a delicately overloaded valve amplifier is completely0 a: B9 [6 F, h9 b- ^" A+ Y
different from an overloaded transistor stage.6 X6 W# c0 \; N5 e0 g# ]
The “Gain” control adjusts a gentle overload while the odd-harmonics content
7 V+ I" }+ y7 n. z- B( ]1 r) V can be adjusted with the “Clip” control.: ^& K; @" E$ T+ v l8 x% Q; U- Q
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24% B. B) `1 c4 v/ \& J: Z
dBu FS.
7 B. p- r# j0 o[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the+ C b/ Z$ j, ]) p6 v0 B& o
desired channel." }6 h+ O% O! c9 N
The “VALVE” LED is on when the Valve Dignifier stage is active.0 a* \- ?. Q( }8 F% [' L9 s" a
[9] INSERT INSERT function.& C. A9 I b. Z/ b( _3 G& E @
First key pressure: INSERT POST VALVE, the Insert Send is tapped after7 h+ v+ a4 e# X1 [7 x
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
" r! l+ U. o# L' q1 V; U and AES/EBU outputs.9 S" t/ o8 X8 Y
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before3 b( D2 `2 t0 `! o9 ~. u
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
& P* S4 {; V3 R/ d R% J; z: D2 T the valve dignifier stage to the Line and AES/EBU outputs., w/ P$ S% ?( Z' f' {/ n( G
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
, k; o6 m6 F0 |9 N/ h4 G stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
* }+ B, @" c) D M7 D9 v% _' F4 [ receives this signal; display: none).
% s" A. K# d, c- V3 M- ]# }; y Insert Send and Insert Return are electronically balanced and equipped with
8 I( Y4 o. u' f6 R+ | XLR connectors.
) A, ^; G( D# ], v3 q! h[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
( q5 S/ P, [, u# d$ D% c ADAT digital interfaces. Each input channel can be switched to one of the2 x: z6 `! J; Z5 @2 n
channels 1...8 of the multichannel interface. If desired, also a mono mix is. o: U) l. \0 U/ t+ O* N
possible by selecting the same output channel for both input channels.7 _6 ^0 ?& n6 b
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
! \. X6 M/ O; u; n channel.
7 ^% W. | Q+ o: ]: S& l7 @% u Can be operated only if the input gain selector is in Mic position. The G2 _; F* z K) {
setting remains stored when switching over to a line gain setting.
1 t" U' b# h, l3 @, \& z[12] Activates the high pass filter on the microphone inputs of the desired channel.
$ Q' u5 w/ }# h; E Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
0 ^7 c1 C! T/ U4 M2 E4 s% w Can be operated only if the input gain selector is in Mic position. The
, T \1 \. W: q1 ^# m/ {; i setting remains stored when switching over to a line gain setting.4 w" v2 c- R9 e' L. Y
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.; a9 Y7 z+ S2 T! H6 _2 s0 j# ^; Q
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
6 P% I1 O7 _+ s1 Z. V! h “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
+ e$ Z9 v& }/ R ~3 m% n Noise Shaping (display: “16NS”) can be selected.. E5 k0 D3 r- }) A1 ~* L/ ` I
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
+ E5 Q4 \0 V8 S% y3 v) ]9 d7 F0 J INT 48 Internal quartz reference, 48 kHz
: Q9 e: a( N7 ~( C INT 44 Internal quartz reference, 44.1 kHz
; |* h' \9 G4 w2 L. P6 S2 a WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)! q' A7 I/ |6 F% K5 H3 x9 D
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized); i9 G, d4 M* \ [5 U
AUTO Selects sources automatically in the sequence AES-WCLK-INT
: h5 A! ], b3 b( o0 f0 Z2 _; O1 Z VAR Indication only, active if the external source frequency deviates from 48 or# r! u2 _* z; s+ h2 e+ E
44.1 kHz for more than approx. ±3 %.0 G6 A/ u. r7 l' N2 |, B
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
; U5 f( S8 Y M5 B either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.6 n7 K. d( X& D6 L+ e) ?& d
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
& K1 P4 s6 s) V& C: i( k. g5 [ the danger of overloading the A/D converter with short signal peaks (if
) o* e0 T( ~8 G7 J% _8 ` active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
; B E; R+ H. \/ [! O" M, X/ D, l allowing for approx. 6 dB reserve before hard clipping occurs
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