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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
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英文电子说明书$ j9 }7 m* f# Z8 m( ^
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory3 y+ B! ^4 J0 F! ^ t
default settings. The subsequent settings remain stored in a Flash EPROM/ _! E& w# a, _1 T" [5 {
after switching the unit off (unit contains no battery).' F; W6 U- P) X# k/ r/ I
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position6 C. M$ d( I9 X" R
between microphone and line sensitivity setting ranges.7 V: t3 ?" T/ G7 R* Q5 w, w" a' g
Mic: Range –40...+20 dBu
6 F5 b' F7 e, m2 t! x Line: Range +14 dBu, +24 dBu
: c R% {9 R+ K. Y! j' m; f4 t[3] Fine Gain Potentiometer for fine input sensitivity setting.2 ^' {2 Z* S2 \! f7 C4 l
Range of additional gain: 0...+15 dB.
9 |6 Z1 V' g, ^& P: g Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents; y1 c/ \- x5 N: q' ^5 Q* ]
the dBu value of an analog input signal which causes a full-scale output of- H- ~ X% [- j/ x
the A/D converter.
2 \+ W$ C6 O x! {% u' X Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
8 b* i p! t. `7 A% Z5 L the peak level is therefore +16 dBu. The “Input dBu FS” rotary
8 Z" \; l' ]) Y k6 M- G switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
, l8 M, s! I) b1 ? Gain” potentiometer [3] increases the gain by 8 dB.
- j) E" P9 X5 R+ I8 r0 g[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
% i6 F& g6 A% I& h# y+ o[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals8 L. k* m" f& { @% T% q0 G1 P
have more body; percussive instruments are less aggressive.* `9 h3 G/ B4 D7 O4 i; V
The group delay behaviour due to AC coupling of the stages is different in3 F' R* a I4 e) W8 ^* t/ u
tube amplifiers.
+ k: a; {8 x, n" T9 n; p The “Bass Warmth” control allows to select the frequency range; w7 h8 A+ f/ r
(10...200 Hz) within which the effect is active.4 S/ E6 S T# s3 q _
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
# a) i+ o/ i) }+ y Valve amps have a characteristic response, mid-frequency harmonic content
2 O4 W( E* _) W9 y( N) v- d$ Z" u is emphasized.: O0 l. t5 k& b U9 r+ a
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.4 c& Z. z) Z' _' z3 H! l# J
The harmonics spectrum of a delicately overloaded valve amplifier is completely
5 S# U" @2 r. U/ \' | different from an overloaded transistor stage.& y: n& ^( t8 G; ?
The “Gain” control adjusts a gentle overload while the odd-harmonics content! B$ L8 ?+ M/ c# @
can be adjusted with the “Clip” control., \- q8 L. e( C& d( K6 z) M5 S
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24; h0 _6 o/ Q# p) F/ p
dBu FS.
# X5 g, s* c. [9 i* H: s7 n[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the5 K" R$ ?& ]9 i4 L3 L
desired channel.' k" r. G+ B) W8 W
The “VALVE” LED is on when the Valve Dignifier stage is active.
3 ^! [ q2 K9 q4 _; S[9] INSERT INSERT function.8 k |& F6 p2 v; H: h& {
First key pressure: INSERT POST VALVE, the Insert Send is tapped after1 m- z3 y5 b& q* `" {0 l1 W; ^5 k
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
1 {8 J4 V }/ \- J and AES/EBU outputs., [0 [3 }# N* L9 d9 y
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
% O. k8 }. a: j the valve stage (display: “INS” and “PRE”); the Insert Return is fed via3 t9 V/ U$ z3 ~
the valve dignifier stage to the Line and AES/EBU outputs.
% m8 U0 B( A2 u9 A! ?3 s; c Third pressure: INSERT OFF, the input signal is fed via the valve dignifier' O$ }4 W$ x% |8 f! X$ a6 l$ v4 e" r
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
2 I* v0 ^# I$ E* P receives this signal; display: none).
" ^2 ?* n* j( ~$ I% } Insert Send and Insert Return are electronically balanced and equipped with8 ?/ \5 h3 ~* ^7 z+ d3 N' u7 d$ @
XLR connectors.
, L" O! `: i/ u4 }0 r; Z( m& t. }[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or. I4 k h4 c( q5 n
ADAT digital interfaces. Each input channel can be switched to one of the
% c2 ]" Q5 G2 `6 P" S: h0 K' s channels 1...8 of the multichannel interface. If desired, also a mono mix is
) J, x# {! v; l possible by selecting the same output channel for both input channels.
' |1 k8 v$ S; s( B[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
5 {; N6 k/ q7 e- y' o+ G( b channel.
" V5 C% p, b& Q9 E3 h; \( j Can be operated only if the input gain selector is in Mic position. The
9 t8 k1 V% f, }: T setting remains stored when switching over to a line gain setting.
+ q, s' H' ?' X! |, b: P[12] Activates the high pass filter on the microphone inputs of the desired channel.
* {5 c1 B! x F3 Z4 ~% ?, S0 k Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.* ^6 r2 @! z/ A+ G+ D5 b/ S
Can be operated only if the input gain selector is in Mic position. The
! b6 e# v4 G4 J setting remains stored when switching over to a line gain setting.5 ^( M* u+ K0 r! X. b
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.7 w: _& C% c7 r6 H i# x
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:' v5 n7 ~$ E- g/ Y2 B
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with2 C/ g J* T2 \
Noise Shaping (display: “16NS”) can be selected.
& b: S* t3 g2 b8 B- w2 K[15] SYNC Selects the synchronization source for the unit. Possible selections are:0 B, n/ G; A/ L, t/ d1 K3 \2 D
INT 48 Internal quartz reference, 48 kHz" h2 a s: R2 g3 Z3 E
INT 44 Internal quartz reference, 44.1 kHz
: k' Y; b4 j, r7 h; d WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)5 z$ ^, H) f& n$ e$ ?
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( V9 y1 M" X, t" o. @4 C0 I
AUTO Selects sources automatically in the sequence AES-WCLK-INT
/ [; M8 n3 `; D8 ~6 p: |- l VAR Indication only, active if the external source frequency deviates from 48 or U5 f9 _, \5 j7 s& f" e
44.1 kHz for more than approx. ±3 %.
5 n. D' [. C5 W5 |7 p' t[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
, I5 {6 }4 r+ m9 f either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
/ u! C6 s7 n4 C1 W* a& H1 W0 a[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce8 h f+ D) d2 M' ~( N
the danger of overloading the A/D converter with short signal peaks (if
$ H& ^) s* J. L' `0 r% u active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,' Z1 D8 ?- j& |4 V* u% \( B$ T
allowing for approx. 6 dB reserve before hard clipping occurs
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