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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 * K0 @" j0 p/ k. l
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' @2 F- C8 h3 a英文电子说明书 ~5 N5 U: I6 @9 }; z J+ v2 `' r
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
6 N& Z# a1 @/ k3 S j7 i6 n default settings. The subsequent settings remain stored in a Flash EPROM
/ r/ E0 N* t+ P$ k% z$ Y after switching the unit off (unit contains no battery).
. u$ F% p9 {- q* F/ [. ]+ h[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position: d* V& O( R2 [) v `9 v+ {+ L# a
between microphone and line sensitivity setting ranges.9 J& O/ t' A+ t
Mic: Range –40...+20 dBu" w/ R _9 b: f) e/ o# }( |
Line: Range +14 dBu, +24 dBu
7 f4 _" `, Y7 G$ u- P T* n[3] Fine Gain Potentiometer for fine input sensitivity setting.
N$ H/ Z2 x: j. M! v. } Range of additional gain: 0...+15 dB.1 ?9 p7 e: y- b% ~* Q8 }9 l8 G, C
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
7 o( | h: S# P* \! e* Z+ t4 b2 y! K the dBu value of an analog input signal which causes a full-scale output of) }' w+ _, ]6 v8 S7 K" F* i
the A/D converter.
0 _, l2 L9 {7 a$ X4 F7 c& w2 G Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;0 n+ E+ U; L+ i: u J$ O
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
' e% i+ G' ]: F+ ~ switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
2 Z3 [( u, y6 g: @# E# N9 t Gain” potentiometer [3] increases the gain by 8 dB.
# F& e3 X. T: ~2 b1 j# {[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
5 N( p& ^9 U2 I/ u) l( H+ R+ m[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
* [+ ]* V# K, J5 Z$ p+ {! d have more body; percussive instruments are less aggressive.* z" d$ K! T+ r% R' S. q& g
The group delay behaviour due to AC coupling of the stages is different in) i1 J, v) L& [# e
tube amplifiers.
! ^9 T+ M8 A2 ^+ y) k The “Bass Warmth” control allows to select the frequency range
0 N: O4 y" A. V# }6 d" J0 Z1 ] (10...200 Hz) within which the effect is active.8 w+ H& [4 F/ {! t( }
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
5 D' x2 y7 H9 M# l( {3 _ Valve amps have a characteristic response, mid-frequency harmonic content
1 ~/ t, Z1 c! e( V$ b. y; v is emphasized.) D/ g, @7 P, z2 T' q* l4 w O1 _/ V
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
( O- Z# P- g- O, L& Y1 j- ? The harmonics spectrum of a delicately overloaded valve amplifier is completely
$ Z1 j2 Y; D. j different from an overloaded transistor stage.. y2 k1 J- O* `3 Z0 `* g* p
The “Gain” control adjusts a gentle overload while the odd-harmonics content1 Y% ?0 [& _3 V# A1 c v
can be adjusted with the “Clip” control.
8 {7 j7 o. b8 a* d" u. j2 K7 d[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...244 g; U8 q9 Y- V8 ?8 F! N
dBu FS.
6 K& X$ G4 N% \0 s; M2 X[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
, b& ?6 D" N+ T! X0 b! j desired channel.
% t3 M8 r! H/ D V: d! u4 ^: f The “VALVE” LED is on when the Valve Dignifier stage is active.! v4 _$ N3 B. }2 I; l% t8 l8 u% U4 D) \
[9] INSERT INSERT function.
& p: V$ h0 ~& p( u: U% @+ X5 N First key pressure: INSERT POST VALVE, the Insert Send is tapped after
0 G8 S7 @! R" I ~9 ^ the valve stage (display: “INS”); the Insert Return is directly fed to the Line
' s- f5 v# @' }1 R; B and AES/EBU outputs.: {, y2 ?2 z3 x/ P8 B) c
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
" E% R0 k* `8 o) c- ~* k the valve stage (display: “INS” and “PRE”); the Insert Return is fed via. u' m z5 @) `0 z3 {2 Q# U
the valve dignifier stage to the Line and AES/EBU outputs.
9 D* j" U! A) b6 x" u' N Third pressure: INSERT OFF, the input signal is fed via the valve dignifier* m. b2 c6 E4 W/ d- h: ?5 T
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
. j- g; ^+ z0 G4 ^ receives this signal; display: none).: ^+ x. p& D, I4 H* J1 d/ k; D. q
Insert Send and Insert Return are electronically balanced and equipped with
A. A$ G% R) i( m- [$ m" e XLR connectors.
) P. w4 J9 }2 ^% ^3 N[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
0 K# m, c G% g0 G/ j7 G% W ADAT digital interfaces. Each input channel can be switched to one of the/ ]; l* g4 W% I& j s
channels 1...8 of the multichannel interface. If desired, also a mono mix is* I" u5 w1 ?' G& C; ]% E' r: \
possible by selecting the same output channel for both input channels., L" r9 T7 {% U3 ]8 a
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone6 `$ `3 z7 z n3 J' D, t( z5 `
channel.
" C2 n0 B, U0 z! @: | Can be operated only if the input gain selector is in Mic position. The
( {/ A3 a& c) h, h& y setting remains stored when switching over to a line gain setting.
& Y& Y+ D3 D, y7 p[12] Activates the high pass filter on the microphone inputs of the desired channel.7 i0 p" X; ~; V& p, ]
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.- Z* ~6 o* O) L1 |* I, I
Can be operated only if the input gain selector is in Mic position. The
' Q# f# ^7 t' `! B/ d4 u setting remains stored when switching over to a line gain setting. K# E8 b" o# n
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
0 W# D" ?0 T6 e" ][14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
/ X3 A0 J5 H" N0 c) s6 j( E “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with, J4 l- N7 S3 X) n8 e9 k
Noise Shaping (display: “16NS”) can be selected.
; `9 A9 l' o: e! A[15] SYNC Selects the synchronization source for the unit. Possible selections are:. j' L% N" c9 q9 ~
INT 48 Internal quartz reference, 48 kHz$ K- `- k0 A; q. U
INT 44 Internal quartz reference, 44.1 kHz
9 t: V( H. ?% i* v WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
( N$ Z) g0 p: G AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( n- {- M( e$ @: w# V+ x( L
AUTO Selects sources automatically in the sequence AES-WCLK-INT" x6 k, ~9 ]6 w3 h# v; I
VAR Indication only, active if the external source frequency deviates from 48 or! h! I" l( l. j0 I
44.1 kHz for more than approx. ±3 %.: p D" R4 B2 l) {1 c
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
; n. x( b9 T3 m8 L/ Z either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
+ I$ O: y, _% B5 F: I2 ^( ^[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce' ^8 b Y5 A& t6 f- z/ T3 ?3 `3 u( ^
the danger of overloading the A/D converter with short signal peaks (if
3 R, W( ^8 A; G# R active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
9 L. D' d% H9 f2 |# w6 L. n allowing for approx. 6 dB reserve before hard clipping occurs
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