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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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英文电子说明书5 \, R9 |: t) n6 q% g) D# u
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory- a+ v" ? E/ F: q/ |, W d) Y
default settings. The subsequent settings remain stored in a Flash EPROM
# U$ L1 n1 @8 R ]) l. D after switching the unit off (unit contains no battery).
L. \* h* L0 L4 B6 x1 W1 p[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position _% G2 {6 L% H9 F
between microphone and line sensitivity setting ranges.
- V( r- Y9 |. ?8 g/ y( V Mic: Range –40...+20 dBu P$ t. Z" o5 W3 a" _% a& M8 B7 x2 ^
Line: Range +14 dBu, +24 dBu
) i/ j: n1 G: d9 q[3] Fine Gain Potentiometer for fine input sensitivity setting." Y2 E( ]) w7 h1 s+ [
Range of additional gain: 0...+15 dB.9 o% P# `. Z# O% q- R$ S5 J5 }, }% Q
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents6 m- \" q$ {7 I, {
the dBu value of an analog input signal which causes a full-scale output of
! N$ E8 N: k1 j+ } the A/D converter.
& d* a3 k% J O) E& z" V Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;- `4 H8 x- ]' P N! o3 H
the peak level is therefore +16 dBu. The “Input dBu FS” rotary* g: a0 r7 L4 z4 n) r
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
7 x$ k2 @$ w1 \, I3 f2 V9 q$ G9 e Gain” potentiometer [3] increases the gain by 8 dB.8 ^& b# V% p2 }. J c' |/ W
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
; w& ]- Q5 ^9 Y, J: j[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
- _( H5 P5 O& K; Q6 d" W5 P have more body; percussive instruments are less aggressive./ X/ q- A4 p2 @( g) A% }
The group delay behaviour due to AC coupling of the stages is different in: \9 o0 `" s& ^' t
tube amplifiers.8 b6 k2 R! L/ r9 L5 U+ y$ u. s# u- I
The “Bass Warmth” control allows to select the frequency range
/ Y2 o( H& u2 Q# ~ (10...200 Hz) within which the effect is active.) Q0 `) e+ M# G$ v, C0 [
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
! ^+ Z: y/ O: h% m0 ]& L6 X Valve amps have a characteristic response, mid-frequency harmonic content% a7 M- ], _5 t
is emphasized.
/ ~7 r) c' ~' F3 f' D[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer., t0 e$ c- w! S# A
The harmonics spectrum of a delicately overloaded valve amplifier is completely
- X. S+ o) g Z" `2 z different from an overloaded transistor stage.) [/ o5 g% H: i6 v% j& {
The “Gain” control adjusts a gentle overload while the odd-harmonics content3 p% K K# \5 D m9 J) t6 n
can be adjusted with the “Clip” control.6 S5 v! o' a- A! |4 b* e
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24/ h# ^$ Y5 y# f, Q
dBu FS.% g( L$ ~: v/ H" ]
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
5 _: `4 ?# q, K- |2 j9 w* m desired channel.! H( l x) F5 u- ?5 e
The “VALVE” LED is on when the Valve Dignifier stage is active.
( O) }0 {8 d6 [" N' }; y6 ~4 P[9] INSERT INSERT function.) I* U' Y, U) l: e) V
First key pressure: INSERT POST VALVE, the Insert Send is tapped after6 l6 ^" M; @( o4 y: a; m
the valve stage (display: “INS”); the Insert Return is directly fed to the Line7 R5 B8 i/ f( ]3 x, L' w
and AES/EBU outputs.+ R6 G* t( f6 ^# G A7 Y
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
8 E ]& Z2 ^* K1 A) M- [1 E. z the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
5 l$ B$ I5 F1 W! x! m9 L, ^ O" J: q3 F the valve dignifier stage to the Line and AES/EBU outputs.
: v1 e% X7 D/ k Third pressure: INSERT OFF, the input signal is fed via the valve dignifier" ~; G7 @- R+ P6 n7 C: f2 Y, K
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output, A% ]% I& y0 [8 s7 q' Y2 I+ o
receives this signal; display: none).
5 `, E0 b% q+ z1 d. i; O* o& ^ Insert Send and Insert Return are electronically balanced and equipped with: j. l# |( M8 B5 G. y/ X+ h' W0 m
XLR connectors.# i+ y& X- l2 `$ P9 G
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
3 @% s% J4 L/ G# B) H2 K; n ADAT digital interfaces. Each input channel can be switched to one of the# |0 S9 K6 A4 K$ x6 q5 r2 B) r
channels 1...8 of the multichannel interface. If desired, also a mono mix is
" v7 l) G/ c& \. d* \3 ?6 B possible by selecting the same output channel for both input channels.5 m" l U6 J% I/ g5 L& ]
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone' Z8 i1 S7 M5 ~4 y" J; |
channel.
; O5 f* G+ S5 q& r Can be operated only if the input gain selector is in Mic position. The* o8 i, g: M+ e1 g5 {( D$ Z# S7 a
setting remains stored when switching over to a line gain setting.
& Y7 Z3 Q5 a8 E2 u; s' K3 o[12] Activates the high pass filter on the microphone inputs of the desired channel.. L; Z; Q6 p9 @7 s
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
7 w6 Q8 P; y x( |# H5 U9 O Can be operated only if the input gain selector is in Mic position. The
5 I' c7 t x2 a3 P) z1 Q+ L setting remains stored when switching over to a line gain setting.: i% B; G% m0 n4 ]. t
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
6 R+ w2 Q ^7 f0 {0 O& U[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display: D$ A( T8 a/ K9 ?7 i. H; B
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
' y% o3 F) ~7 v+ y8 U- H. b Noise Shaping (display: “16NS”) can be selected.
4 k+ D, e7 D; ^' U; q1 v- ~[15] SYNC Selects the synchronization source for the unit. Possible selections are:% e: ]; N8 I0 K4 h
INT 48 Internal quartz reference, 48 kHz }; @% H& s' M: y8 H1 m
INT 44 Internal quartz reference, 44.1 kHz
! c+ N9 [+ v& Q8 `6 D# c4 [ WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)* w s8 C& o, ]: O/ i9 k8 c
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
: a M1 k N9 z) Z* Q9 L; X& | AUTO Selects sources automatically in the sequence AES-WCLK-INT
7 W2 L/ y o: H1 T5 g6 |4 o5 N VAR Indication only, active if the external source frequency deviates from 48 or; W& m- ^0 j& a+ ^4 _" S
44.1 kHz for more than approx. ±3 %.
7 c6 k6 W+ \% K+ B" p[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –$ U$ B/ O& S; g4 u' b2 G+ w
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
+ n5 n2 M* q( d$ ]9 l[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce6 B2 G. ]1 P0 ~: w! H* G1 o
the danger of overloading the A/D converter with short signal peaks (if. p6 x2 ^. D9 W- ?7 |
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,1 _4 D* _: Y6 n, [- A' w6 a/ V
allowing for approx. 6 dB reserve before hard clipping occurs+ n+ K) Y I5 O) B4 [0 x* O
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