|
|

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
* ~2 D0 I+ w' O/ A6 n. j) {, h4 l! l
8 Z/ K& x9 {, l2 a9 N! y
. G3 u. K# c7 s# o' c英文电子说明书
* S2 q* ~4 h% Y[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
+ Q& R8 z6 H h! f default settings. The subsequent settings remain stored in a Flash EPROM
- Y# J( S7 f' U4 ?6 z after switching the unit off (unit contains no battery).
1 K/ l- ^+ F+ N/ _2 e[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position$ K& E, Z# u/ T0 Q4 J y: R
between microphone and line sensitivity setting ranges.2 k ]. P- _3 ^' [' K
Mic: Range –40...+20 dBu) s8 j$ R# j, B9 U1 c
Line: Range +14 dBu, +24 dBu: N F' j% B: u: g. \
[3] Fine Gain Potentiometer for fine input sensitivity setting.0 U0 S$ S. z8 A0 s& {
Range of additional gain: 0...+15 dB.& \2 |* t8 V/ y2 C/ u0 B3 @
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents9 m. O. {4 l% r
the dBu value of an analog input signal which causes a full-scale output of
1 Y; h* z4 N) z; W$ F4 G the A/D converter.
3 T/ G9 V3 }" S! U8 e Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;+ |, ]/ O* a' N7 f# y1 R( N
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
: m, M6 |( b+ n5 d/ {: F$ C, o% ^9 v* e switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine+ V6 d0 {$ v* z8 W* F
Gain” potentiometer [3] increases the gain by 8 dB.' W2 C# R9 a+ T( B5 N
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active./ ]- _, Y- U. P* k; G3 S W3 g7 r6 n
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals& x) W: O e& ?7 y# B3 g
have more body; percussive instruments are less aggressive.% r. Q- B! I5 z% n
The group delay behaviour due to AC coupling of the stages is different in: a% M9 j+ U1 q
tube amplifiers.
' f$ J8 z: y& c6 D The “Bass Warmth” control allows to select the frequency range
8 n, N |6 k: I& [: m (10...200 Hz) within which the effect is active.& M$ g6 p V# c
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
6 H# S: p% x5 G" q* ~: B% i" [* _; x" F2 Y Valve amps have a characteristic response, mid-frequency harmonic content8 O' e+ L) p3 z7 n1 O" \
is emphasized.
5 C) a2 r+ t* R[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
7 t# A* m a+ K4 g# N The harmonics spectrum of a delicately overloaded valve amplifier is completely% m( a$ m7 z' E
different from an overloaded transistor stage.2 `0 c7 i! a% t6 f$ U
The “Gain” control adjusts a gentle overload while the odd-harmonics content. n6 m$ B! c8 r% |5 N
can be adjusted with the “Clip” control.9 o5 ^ Y- C7 K `. r$ D; h' m, j
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24" C3 I5 T( } g% h1 `: E
dBu FS.
, s: H; L; X$ q, W- _- f/ T[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
5 ?$ N- M4 T/ Y desired channel.1 d* j+ E$ d; Z! d l0 B* O
The “VALVE” LED is on when the Valve Dignifier stage is active.6 |( p4 g! u* G( O9 n% @; Z
[9] INSERT INSERT function.
! C# ^5 b; D, F# ? First key pressure: INSERT POST VALVE, the Insert Send is tapped after
4 s; S8 X3 S/ l. f the valve stage (display: “INS”); the Insert Return is directly fed to the Line0 O) J2 C2 k7 G0 p1 n5 s- r$ o
and AES/EBU outputs.
- d' s0 N( r: M. B3 R. A Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
: T, o6 V# ]; e the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 m. \3 B R9 _0 ] the valve dignifier stage to the Line and AES/EBU outputs.9 Y- s+ B1 Z2 u% h8 s4 k
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
# D. @" F6 P6 T stage (if active) to the Line and AES/EBU outputs (also the Insert Send output- J, D8 P+ V& k- B$ S) z- m
receives this signal; display: none).' ]' T' ]0 ^3 y# f% Y. g: A
Insert Send and Insert Return are electronically balanced and equipped with+ |0 p; N7 k* Q! Z! b- X
XLR connectors.
: P4 C3 R8 w' U1 D0 g! K J$ d[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or" m& ?8 f" d! P' [8 y
ADAT digital interfaces. Each input channel can be switched to one of the& A; x: q' `$ N0 g
channels 1...8 of the multichannel interface. If desired, also a mono mix is
; s7 r& L( M, d' d3 o: A) M* [ possible by selecting the same output channel for both input channels.& j9 j% Z8 u3 G$ D L2 k( t
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
M) i/ e6 k& r* d7 v7 I% ] channel.
; h, q, t* K9 x5 x& A8 A Can be operated only if the input gain selector is in Mic position. The# _8 @8 |* [ c% Y' c* g, A
setting remains stored when switching over to a line gain setting.
: b, s8 b7 B5 G* |( A[12] Activates the high pass filter on the microphone inputs of the desired channel.& S3 f& y/ e7 l& t2 l
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
$ J2 X; j [3 q7 @6 e$ L Can be operated only if the input gain selector is in Mic position. The
$ w* @& |$ ^, B setting remains stored when switching over to a line gain setting.
J) C- x! j% q[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
8 Y @, [$ P5 R, |! b# Y, u" `[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:% f4 Y" r2 D- l5 t% a7 @
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
# ]5 u; J9 |+ j$ V" @ Noise Shaping (display: “16NS”) can be selected.
. s1 Q; l l+ i[15] SYNC Selects the synchronization source for the unit. Possible selections are:
4 p X! D) e7 C$ O- n5 { b" U INT 48 Internal quartz reference, 48 kHz
7 K( B+ K8 v% z* P INT 44 Internal quartz reference, 44.1 kHz
0 N7 q: j5 M/ g& P WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)8 z2 h. q. r; D2 P/ y# E
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
! `) {2 l* [3 ?. S6 C AUTO Selects sources automatically in the sequence AES-WCLK-INT, x. ^; h$ T% r: b# @+ b7 @
VAR Indication only, active if the external source frequency deviates from 48 or
1 t) B" J) Y6 {6 m7 R 44.1 kHz for more than approx. ±3 %.
1 }9 m7 D( U* }6 T! h! I[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
5 J" K* B5 M$ I5 d l$ ] either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.8 D# V5 l4 h# ]* X3 D3 Z
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
! Z8 d) C7 D) q# P6 P; z9 \- [ the danger of overloading the A/D converter with short signal peaks (if- Q# D8 l% c" `3 P1 h. s
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
1 J( `' H1 T1 m4 i. ^: j# a) s allowing for approx. 6 dB reserve before hard clipping occurs
* B: a" S1 D6 E& p
0 I8 t, y7 q( `8 _ U+ G. z
( F* [( G2 z0 [1 C8 w U0 O |
|