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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 * U* u7 Z% F" J, u
' ]. y0 d* o/ X3 ~( y* \! i4 ]英文电子说明书6 m# X* }7 e( U' c" l1 w4 U
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
0 b' H2 I5 R7 r0 |) x default settings. The subsequent settings remain stored in a Flash EPROM1 ]9 w, C2 G' r9 d3 ~( }/ z
after switching the unit off (unit contains no battery).
6 Z0 t8 O4 Z# [0 [& K- K3 ?[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position0 K: _! O: h8 T! O' B6 a
between microphone and line sensitivity setting ranges.. O# J, b1 L8 z4 V- e: f# e
Mic: Range –40...+20 dBu
& y9 Q7 ?3 C5 [/ r5 Z) Q. V Line: Range +14 dBu, +24 dBu
5 v; [, p! R$ r) b) P" G! O- k q[3] Fine Gain Potentiometer for fine input sensitivity setting.
; f- m' _: Y/ ?5 L# f7 T; `* o Range of additional gain: 0...+15 dB.5 Z* |6 q& P+ E- e1 [. n
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
|, h% b9 ~2 a the dBu value of an analog input signal which causes a full-scale output of
( S' u$ E( s3 K) ?5 P0 `. b+ C: } the A/D converter.
( d: F% \0 W1 w8 w/ Q, z Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
7 m6 [" g# s: j* h. Y, X3 f. M the peak level is therefore +16 dBu. The “Input dBu FS” rotary
! T8 B7 P; U4 i# h switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
+ G* _; l& Q* w) s& j9 }: @ Gain” potentiometer [3] increases the gain by 8 dB.( Z0 E$ y2 X, J
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active. \0 j( ]0 d6 R- x: [
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals! }4 M4 |' |+ I0 G* v
have more body; percussive instruments are less aggressive.; G \* W9 Y& m& A
The group delay behaviour due to AC coupling of the stages is different in U' q+ Y6 r, g5 Y/ [
tube amplifiers.
1 J+ i6 m8 n& o' [- H; Z The “Bass Warmth” control allows to select the frequency range9 B: w$ c0 S2 f8 Z
(10...200 Hz) within which the effect is active.# P0 t! |- b y& {
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.) g' u+ ^5 X' b/ q% j7 q
Valve amps have a characteristic response, mid-frequency harmonic content. S# y- Q, f. ?* J
is emphasized.
7 }& O4 D2 ~! o[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.- m h7 \% u7 E4 h
The harmonics spectrum of a delicately overloaded valve amplifier is completely3 B D8 N* X+ S, S
different from an overloaded transistor stage.2 P" U6 Y0 c4 M2 n/ j1 B; \3 {
The “Gain” control adjusts a gentle overload while the odd-harmonics content
b- ^8 [! a3 i) @" Y$ `3 k can be adjusted with the “Clip” control.
4 P; z z0 R1 H, m3 ]- V[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24( h) L8 v+ q, t& m% A% X
dBu FS.
; u7 |, B+ p) v) o[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the# Y2 q/ c \' H: _7 `6 V5 k4 N
desired channel.
) j8 x7 q6 z* ^; I9 l1 _ The “VALVE” LED is on when the Valve Dignifier stage is active., L7 K: V, h/ ]: W
[9] INSERT INSERT function.
% a5 a; i2 o- t First key pressure: INSERT POST VALVE, the Insert Send is tapped after6 n- }: H% p, O* b
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
4 w! {1 }( {$ r, ]3 S1 R0 C4 k and AES/EBU outputs.
3 C- z3 U) H" u3 `6 h' e Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before+ E' e" {' Y" m3 w5 |& C
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via& J9 a; ]8 w+ J5 n& m9 |4 Q+ G5 s6 P
the valve dignifier stage to the Line and AES/EBU outputs.
- c. N6 ]7 M4 c Third pressure: INSERT OFF, the input signal is fed via the valve dignifier5 V1 U+ j3 _, W2 K# N
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output. o- a# U4 w* v: I6 }
receives this signal; display: none).
s& e9 R6 U/ m( J Insert Send and Insert Return are electronically balanced and equipped with# n( z; ~1 ~- r# E
XLR connectors.
! |* z ~! ] X8 k" ?/ O# D. O Z[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or1 P- ^) i; m5 c2 }3 F+ ~% g. a
ADAT digital interfaces. Each input channel can be switched to one of the9 D2 h' ^& X! L9 ^, J- d, a) \
channels 1...8 of the multichannel interface. If desired, also a mono mix is+ E$ m1 Y8 r8 f% x$ V
possible by selecting the same output channel for both input channels.
0 ~& m$ Y; v! j a[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, `! w5 M% n+ b channel.
6 g% c7 r) ^4 k. n+ `) C9 ? Can be operated only if the input gain selector is in Mic position. The
8 Z; {+ k7 S: ?, z6 r; a: @ setting remains stored when switching over to a line gain setting.
# r9 Q- y8 p3 K4 X2 m3 L1 `[12] Activates the high pass filter on the microphone inputs of the desired channel.8 a( N/ ~, F' Z7 u* M; Y3 j
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
3 {' {) U9 q4 S Can be operated only if the input gain selector is in Mic position. The
$ g0 g+ Q1 P9 F setting remains stored when switching over to a line gain setting.) C# q4 w3 t4 @/ B
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* C9 g) u5 I# v7 U( s7 w
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
) L2 v; Y- R- z7 U" J3 T/ e “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
# J( Y" O+ n7 b. u! ^ Noise Shaping (display: “16NS”) can be selected.
a" ?- A) t$ a; E! ^( m[15] SYNC Selects the synchronization source for the unit. Possible selections are:# ~5 _( I) R6 u* R6 {, I; u
INT 48 Internal quartz reference, 48 kHz
8 H( k3 x8 y0 P4 r INT 44 Internal quartz reference, 44.1 kHz
. ?4 ?/ P( ?! i5 J# x WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized). P6 R X$ k' H" z% g% y* @/ N
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized). Z( a [! h, r* A. k0 ?- `
AUTO Selects sources automatically in the sequence AES-WCLK-INT, K* [; Q! S4 ]" [. n {5 z
VAR Indication only, active if the external source frequency deviates from 48 or
+ r( v! }7 L- U4 H) ]7 W 44.1 kHz for more than approx. ±3 %.
- `' O" L2 h/ r4 h2 T( G; k[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
; E- N6 D& Y; V either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.3 [: m' S) F8 f& S
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
* y3 I" b& m& E0 F2 v the danger of overloading the A/D converter with short signal peaks (if
- c# G, p. r" U active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,) u6 g \& [1 s8 c$ R5 w
allowing for approx. 6 dB reserve before hard clipping occurs
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