|
|

楼主 |
发表于 2012-5-21 23:23:18
|
显示全部楼层
本帖最后由 dan3963101 于 2012-5-20 00:12 编辑
7 Q |: j% q, ~8 Y0 l5 Y/ d5 C
+ I% d" X9 t" D# D. z% }8 v e- Z! L7 x7 L; v" c5 P/ A9 }
英文电子说明书
@8 x( a: Z2 H+ d% }[1] POWER Switches the unit on or off. The unit is ready to operate with the factory9 P+ m P3 m- V: h7 z* I
default settings. The subsequent settings remain stored in a Flash EPROM' p" ^- H# _& O( H$ C$ ?2 E
after switching the unit off (unit contains no battery).+ A/ c3 B, e6 X. `1 M4 i7 s
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position$ B* k+ O, `) {7 L9 T+ E% w$ E
between microphone and line sensitivity setting ranges.+ ^. Y' g# R$ @. e' H9 F
Mic: Range –40...+20 dBu
1 f3 v8 ?* q! a Line: Range +14 dBu, +24 dBu, Q' h. S5 ~6 A8 W
[3] Fine Gain Potentiometer for fine input sensitivity setting.2 ~0 b- K4 ^6 `
Range of additional gain: 0...+15 dB.& K5 V0 _& m s" Y4 d: ?* K) x
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents0 ^) G, V3 |1 h5 T
the dBu value of an analog input signal which causes a full-scale output of
6 ?4 b' B1 T( W' H; [- Q& X1 S. a the A/D converter.% T! g- P5 X! w: c/ O
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
@9 U& A# J4 [9 a F" o the peak level is therefore +16 dBu. The “Input dBu FS” rotary% Y" z6 }5 i; v" r( S3 ^& P& z
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
" T2 ]& ~$ u5 H: N$ f5 t Gain” potentiometer [3] increases the gain by 8 dB.2 e; h* b; }1 u4 F- i# k7 ~6 j
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
' h2 s" V- n- @! X8 D, P[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals+ Z( M2 W7 H3 T$ h3 X5 ^
have more body; percussive instruments are less aggressive.+ \8 V7 n P, z, @/ x3 \. Z
The group delay behaviour due to AC coupling of the stages is different in
# N b* k, S; h u tube amplifiers." u; u5 l% Z3 [( D/ T4 v
The “Bass Warmth” control allows to select the frequency range; t2 A ?, G, q4 k) r P) K8 I
(10...200 Hz) within which the effect is active.0 b i% Y- L1 x/ h, n
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.* c6 x/ z( u( q: P( K( c
Valve amps have a characteristic response, mid-frequency harmonic content% b' \. \' i. ~' _ `
is emphasized.( ^) M# X9 O' {. w* K' F
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
$ e R$ n9 _0 Z- M7 b9 e5 @0 k The harmonics spectrum of a delicately overloaded valve amplifier is completely
n8 |# \2 ?" u( R7 U different from an overloaded transistor stage.+ z. {* o ]0 E9 Z
The “Gain” control adjusts a gentle overload while the odd-harmonics content
0 l5 o5 `+ ]7 {2 W0 j Q! j can be adjusted with the “Clip” control.. _# _8 s) e' G: L: _# J9 r2 k
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...246 q* X1 t0 V, f- a% S/ _
dBu FS.
6 m" p2 W. U$ F* I) _[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
" [6 X1 N, N& x5 l! h desired channel., R; ?9 S N$ a9 Y/ u9 d6 O8 M N+ P
The “VALVE” LED is on when the Valve Dignifier stage is active.) k# V1 I, I0 v# n2 D
[9] INSERT INSERT function.
! {# V4 i. B8 Q First key pressure: INSERT POST VALVE, the Insert Send is tapped after4 [6 J9 H+ Q, Q% p2 j/ o }+ i
the valve stage (display: “INS”); the Insert Return is directly fed to the Line: h+ Q) W: b! L z, t0 g
and AES/EBU outputs.
. E' T3 _* D, H; m8 \ Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
0 R$ b4 z. C" ~1 A# h the valve stage (display: “INS” and “PRE”); the Insert Return is fed via# n( G9 S8 m+ ?4 c
the valve dignifier stage to the Line and AES/EBU outputs.
: z2 ^6 N1 c! p: ?; G Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
' P9 y: h& G5 o; T$ G7 m stage (if active) to the Line and AES/EBU outputs (also the Insert Send output; q' B) p6 f, B9 p+ g- v
receives this signal; display: none).* C* n- b! z) g3 `+ q# _% u
Insert Send and Insert Return are electronically balanced and equipped with, H+ q$ {( S" t3 N! V. t3 h
XLR connectors.8 `5 o/ V( D2 T8 x/ `3 a+ j
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or# o. w+ e" ~9 K& _3 j- h5 q: r
ADAT digital interfaces. Each input channel can be switched to one of the% F6 h8 ^1 Z% B- m; P, z
channels 1...8 of the multichannel interface. If desired, also a mono mix is9 i/ Z7 K! {# _6 f& n
possible by selecting the same output channel for both input channels.
1 i% L: e" T, F5 \0 d[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone$ a5 N+ p+ B; T! W# w8 N
channel.
/ L. y' |6 Y" b5 c Can be operated only if the input gain selector is in Mic position. The6 _, W, [$ O2 e" b. y
setting remains stored when switching over to a line gain setting. r2 N: B2 r+ A5 D
[12] Activates the high pass filter on the microphone inputs of the desired channel.
; A% m- X, ?1 w9 ] Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
$ a8 |1 H3 Y% G" G Can be operated only if the input gain selector is in Mic position. The
( E& N; v0 I7 S% L& e4 m- y' i/ l. n$ ^ setting remains stored when switching over to a line gain setting.* i& e1 F5 F; P; ]/ ^
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.3 m m: s, Y: M3 T
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:6 \0 w& z- a$ P
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with8 n! E$ O2 A* l; w
Noise Shaping (display: “16NS”) can be selected.. ]6 n3 D# w! R$ J M
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
0 _( p, I( M: L2 Q INT 48 Internal quartz reference, 48 kHz' P* ?$ C8 _# I: w
INT 44 Internal quartz reference, 44.1 kHz, \9 {4 V C. v3 S; }6 B
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)- u" u) o9 C' E; E; @
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized). M4 u; ]9 Q- t
AUTO Selects sources automatically in the sequence AES-WCLK-INT
* d& f9 d8 H5 \& r; h9 H VAR Indication only, active if the external source frequency deviates from 48 or
3 U, ^, h% ]0 @ 44.1 kHz for more than approx. ±3 %.- ^& L, c# A4 e
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –8 C6 z7 o1 L- Y; K' ^/ ^. t, n
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.; J e$ ?2 s9 ~
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
( h5 k" ?0 m. j Z1 k p/ s the danger of overloading the A/D converter with short signal peaks (if
0 s/ j6 ?0 l$ F. {, j( b active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,4 W# E. Z' m U& I7 U+ x
allowing for approx. 6 dB reserve before hard clipping occurs
) i( Z) h/ z- \ `( @, {! `9 o
3 ^. R+ _5 ~7 I2 @& y9 s7 E) d . g2 ^& }, Q: |4 X
|
|