|
|

楼主 |
发表于 2012-5-20 00:04:04
|
显示全部楼层
本帖最后由 dan3963101 于 2012-5-20 00:12 编辑 - O% G1 w3 W& `! y, e# D
# q4 w4 u, F+ [2 R
英文电子说明书7 f% p/ L" L8 a. }4 ~
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
) F8 P9 Z& C# N default settings. The subsequent settings remain stored in a Flash EPROM
% Y& f; H! w4 S* d after switching the unit off (unit contains no battery).9 \: a- [$ J! E6 Q) M( ]' x z: Y% }
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
9 e7 B' V1 I) a0 t% q between microphone and line sensitivity setting ranges.2 |0 U; ^. b( D3 ^" r* y( a1 U% m
Mic: Range –40...+20 dBu
: [( K7 P n% Y0 v( z* V Line: Range +14 dBu, +24 dBu# S- C% I+ E2 {
[3] Fine Gain Potentiometer for fine input sensitivity setting.9 S' R+ w9 P3 @, J5 N" G' M
Range of additional gain: 0...+15 dB.
8 o7 F, B) x' D$ A Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents* @7 C9 Z) k7 [' c9 n; ~* N
the dBu value of an analog input signal which causes a full-scale output of
* X! y3 j* o! H _5 R the A/D converter.3 o) Q: e% D E! t+ W" K
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
# P- ^5 o$ w+ ^' s; s+ L* A* u the peak level is therefore +16 dBu. The “Input dBu FS” rotary
2 ^0 v5 }$ \1 E/ L# j( X switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine+ ~) q" T- m1 y( Z j
Gain” potentiometer [3] increases the gain by 8 dB.2 v' R. G+ X7 w4 ]* s! x: M9 _2 q
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
D8 t2 K. P7 p# d# l, @[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
5 c' b, }) |4 M, O( P have more body; percussive instruments are less aggressive.! @) Q/ b3 q% s+ ^/ @2 a+ _9 j1 x; x
The group delay behaviour due to AC coupling of the stages is different in
! O5 F# h. ?7 ]7 [7 z9 w3 j5 n tube amplifiers.
; W5 A/ ^6 E$ Y The “Bass Warmth” control allows to select the frequency range6 N* w9 C8 {8 s1 p5 u7 U! E. W& t- x8 U
(10...200 Hz) within which the effect is active.& k- s, D5 _4 o+ e* U+ A( o9 I
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
) ^2 {. Q$ q' k6 Z4 q0 u Valve amps have a characteristic response, mid-frequency harmonic content
/ T: A$ t. e8 y, R! G is emphasized.
$ _+ D; r! `& V) q6 X+ `[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
) W' q8 I7 B4 w* u- f% P/ p, d The harmonics spectrum of a delicately overloaded valve amplifier is completely! A- D5 @2 A) Q2 w, M. U4 i; o
different from an overloaded transistor stage.
2 f2 |# b) d0 f% z3 o: Q# }9 L. z The “Gain” control adjusts a gentle overload while the odd-harmonics content; h J% q2 f6 b. m
can be adjusted with the “Clip” control.
: N. W$ K" @$ r8 Y' {# H1 c[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
4 X1 L6 N9 t" ^+ A+ } dBu FS.- Q6 {, j" `( {. G) U, Q
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the3 m, t5 y1 W$ n
desired channel.+ V3 r- C, |0 [4 e& C7 l
The “VALVE” LED is on when the Valve Dignifier stage is active.3 j9 s/ D6 t; c# r$ A
[9] INSERT INSERT function.
6 [( @6 m, Y/ n) ]& v' ~0 f First key pressure: INSERT POST VALVE, the Insert Send is tapped after
" g, y; [# p- j' R. P, o the valve stage (display: “INS”); the Insert Return is directly fed to the Line
7 l2 n3 V* K# Z! m2 J9 J and AES/EBU outputs., z) O) d; w8 ^/ _+ d
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
( _5 X, y. t$ A0 }! z- j3 ^ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via' S! H- p# @* A/ K- ^) U: a5 ?) Q
the valve dignifier stage to the Line and AES/EBU outputs.
. M* x$ ]. g. u, p- l% D Third pressure: INSERT OFF, the input signal is fed via the valve dignifier5 {; U6 l, K: ]! n" C! X" ]
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output j$ Z: i: y9 f$ b7 o: W8 s7 i
receives this signal; display: none).
* J( t$ n' O- A Insert Send and Insert Return are electronically balanced and equipped with
/ T' |) @0 E D- F% q XLR connectors.
3 q! e6 y4 X2 g[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or& n9 j6 ^/ ~4 s0 i$ X' u
ADAT digital interfaces. Each input channel can be switched to one of the
; `! B/ {2 ?( y channels 1...8 of the multichannel interface. If desired, also a mono mix is/ ^/ n/ ^8 R8 |; [. N' [
possible by selecting the same output channel for both input channels.5 m8 E8 \: R; h! w
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone$ ?& U( v* e5 P1 T
channel.
8 }2 W1 ^- T" R5 g" \& o Can be operated only if the input gain selector is in Mic position. The
. N" z4 j2 A5 c& N; m7 ?4 i setting remains stored when switching over to a line gain setting.
+ M! {+ S' J/ P( U9 M- }" Q( P[12] Activates the high pass filter on the microphone inputs of the desired channel.
$ h' w$ C8 u& o& C Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.2 }* _" ?5 ], q0 ^8 i- s
Can be operated only if the input gain selector is in Mic position. The
- i$ r/ \0 P* ` setting remains stored when switching over to a line gain setting.
6 K& a' A" b3 `" K5 \0 H3 r[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
+ q. w9 T( N8 ^* j( [[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:) n! l* ~. d% V- D
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with, t; f" M/ b% a8 n0 B9 P% A
Noise Shaping (display: “16NS”) can be selected.5 Q/ H+ ?& {& Q' `! P
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
$ ~1 ?$ o; E H4 F. V. R4 p/ E1 z$ O INT 48 Internal quartz reference, 48 kHz2 L4 L Z( s- ?) m
INT 44 Internal quartz reference, 44.1 kHz: }, O, l, |8 A
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)" k0 a0 l. f$ v8 v( w; K0 W9 V
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
: M% \' l" W& X/ j3 j+ P G AUTO Selects sources automatically in the sequence AES-WCLK-INT$ J; W, L+ G! h$ P, G
VAR Indication only, active if the external source frequency deviates from 48 or4 I( V% p' V" q5 u& s
44.1 kHz for more than approx. ±3 %.7 x3 n' u+ g# `, g D F/ M8 V
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –, a ~3 o( ?; N* |% J
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
/ n/ O2 W/ D/ d/ ]6 n0 ?! p[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
0 s: r9 k. v* q. i+ v the danger of overloading the A/D converter with short signal peaks (if
. V' r7 \& {, o3 T active, the display indicates “SOFT”). Threshold at 3 dB below full-scale," h9 h4 Y+ L! r+ ]/ I; a, M% f' U
allowing for approx. 6 dB reserve before hard clipping occurs
$ L5 a+ W, f" E3 u6 i ; ] t; m& `1 A- B' n
|
|