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发表于 2012-5-20 00:04:04
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本帖最后由 dan3963101 于 2012-5-20 00:12 编辑 / }5 A) b" K) G7 t
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英文电子说明书, q* V8 ]/ W; ~
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
0 V: ?; B6 c4 G7 \ j default settings. The subsequent settings remain stored in a Flash EPROM, A- [" ] F. x# m
after switching the unit off (unit contains no battery).; S' G9 }" x- h$ L& F
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position3 y) |: {5 F! F6 o* z; _+ H' ~2 g. x
between microphone and line sensitivity setting ranges.3 c5 F/ h* ~% Q5 a4 t- k
Mic: Range –40...+20 dBu& E! ~- l% R4 R5 {/ v
Line: Range +14 dBu, +24 dBu. p$ Y+ u7 ?, o5 m
[3] Fine Gain Potentiometer for fine input sensitivity setting.
( \% j, _9 F' [ Range of additional gain: 0...+15 dB.7 H Q6 g6 N1 V, T6 q8 l8 g% p
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
% e; h8 b2 @7 F6 J the dBu value of an analog input signal which causes a full-scale output of0 s- V: k- S9 J$ a) n M2 J) ]
the A/D converter.' L( I u0 E }; |
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom; h8 R `' N0 e* S! b1 K
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
( m/ \4 _% w; s* D* _+ I. I9 x switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine, j {% g& ]. A; P% V( M
Gain” potentiometer [3] increases the gain by 8 dB.
, Q% Y% A% E6 ][4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.- v: V* I1 P3 n5 O) @9 W. R
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
2 S' P5 j2 o5 U) t3 O+ S9 l1 x8 b have more body; percussive instruments are less aggressive.1 C, d0 l% \) H6 d$ T7 I
The group delay behaviour due to AC coupling of the stages is different in
0 U) }( D: e- o' @2 }* k tube amplifiers.
( y3 g, Q/ @8 m2 K+ G3 e" J The “Bass Warmth” control allows to select the frequency range' T0 @% C' U* M
(10...200 Hz) within which the effect is active.7 {) A& L# R+ A( a1 o1 m+ ?
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
m9 O( q. M- _; l$ U9 j+ P% w Valve amps have a characteristic response, mid-frequency harmonic content7 N! l9 @# O$ J' p8 I1 ]" l8 D% T
is emphasized.
9 Y8 M& c2 @4 x$ Q( T4 N[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
3 K' H0 {3 _& w: U The harmonics spectrum of a delicately overloaded valve amplifier is completely
: m# x! y' F1 q different from an overloaded transistor stage.
4 {: D% b5 l+ a+ V; Q The “Gain” control adjusts a gentle overload while the odd-harmonics content
- ? s' H) L* P* K can be adjusted with the “Clip” control.4 ]/ y# |; Q) F+ I1 p, S
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
, G9 ?( k3 G# a, P2 X- @ dBu FS.! X2 h" _$ Y2 F$ f! A; r+ c
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the, m+ R$ q* g) G' S
desired channel.& {. E2 ^; h, o$ V& t; p/ p0 y& G0 V
The “VALVE” LED is on when the Valve Dignifier stage is active.
3 R& P! {, ~) ^( q[9] INSERT INSERT function.4 t* n" c; D2 I' h& r* @6 _0 s. K
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
0 K$ t1 \. T/ }" |! c the valve stage (display: “INS”); the Insert Return is directly fed to the Line8 n1 R# K, a4 `& N/ s/ Z8 B
and AES/EBU outputs.
9 ]; G* K- t- i, c1 J6 w/ g% K! `( R Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
, R. M' n2 ~6 N% A" d. o: ^ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
2 x. J8 M- p; `! l3 C: [ the valve dignifier stage to the Line and AES/EBU outputs.% v% x2 M' K! v9 E) S* _ Y* L
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
, I0 q0 v( ?9 A3 E% z0 w# R stage (if active) to the Line and AES/EBU outputs (also the Insert Send output+ I9 E4 U! y- A. D
receives this signal; display: none).- X" K- p7 T( ~7 s
Insert Send and Insert Return are electronically balanced and equipped with
$ T. H' k: h- `% I XLR connectors.
* i4 e" B, f; @5 ?[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
! h& p q6 u: i5 F! U ADAT digital interfaces. Each input channel can be switched to one of the
8 B' B% w, m1 t5 U8 ` channels 1...8 of the multichannel interface. If desired, also a mono mix is6 u; ]9 m; w, W; C& @! ]' X8 |
possible by selecting the same output channel for both input channels.
8 ~+ M0 D4 P o, Z5 E% T[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone% `( N6 `$ f4 n6 H
channel.' p& I! r) ?& ]5 G9 h/ u8 b( j
Can be operated only if the input gain selector is in Mic position. The
- ]! f! k: j2 Q1 c9 D setting remains stored when switching over to a line gain setting.
. v/ k5 G- z9 B[12] Activates the high pass filter on the microphone inputs of the desired channel.
7 X1 O$ f# V0 L, y# y( L; `# q4 f2 \ Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave. Z5 g$ L0 A. y. R: F
Can be operated only if the input gain selector is in Mic position. The+ y2 i- Z9 J) i2 N0 m
setting remains stored when switching over to a line gain setting.6 K: b: A. `. p
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
' Z+ R* r. v/ a# ]( }[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, G3 P- R. w7 b0 s8 |- R4 i “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
" R3 H' g A* l9 b! e$ ?: V7 e Noise Shaping (display: “16NS”) can be selected.& V7 ~) D* P7 E
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
% c' |' a- D9 }' Z1 i8 L INT 48 Internal quartz reference, 48 kHz; i$ q a/ O8 _
INT 44 Internal quartz reference, 44.1 kHz8 ^$ B" x8 |) u* w" ?
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)- Q7 N) E5 {( x8 q @* n
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
3 O/ I* v) y* G- [, b AUTO Selects sources automatically in the sequence AES-WCLK-INT
* n; g2 H2 k4 k& v. E VAR Indication only, active if the external source frequency deviates from 48 or" v; A, l+ Y% _: a( n) I& n
44.1 kHz for more than approx. ±3 %.# }- K5 v$ {* S3 S/ S8 V d
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –- A9 P! y7 F2 |5 ^/ a
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.: F1 r. z5 E+ v; k8 i
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce* L* D4 S- X5 s+ [3 g! g# o0 w
the danger of overloading the A/D converter with short signal peaks (if
1 J0 x V1 ]0 } active, the display indicates “SOFT”). Threshold at 3 dB below full-scale, L; b$ Z n' t6 F+ d( A# }: z/ w
allowing for approx. 6 dB reserve before hard clipping occurs7 a0 l/ a- X3 E# l# a F4 u7 Z
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