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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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- b" x% k+ |! Q* N英文电子说明书7 w8 p& ]; z$ j) F
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory' V! N K7 w6 m6 V4 P$ F
default settings. The subsequent settings remain stored in a Flash EPROM9 }. z) p: j/ l
after switching the unit off (unit contains no battery).0 L/ I- l9 n% r
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
+ V5 }7 T- D% @/ p; v# m# u between microphone and line sensitivity setting ranges.
& U: e0 t: z! E3 a2 s& X/ w! R Mic: Range –40...+20 dBu8 l# d: Y" ^! p/ Z2 T V
Line: Range +14 dBu, +24 dBu
8 n: C4 f5 ?" d& @6 J[3] Fine Gain Potentiometer for fine input sensitivity setting.
8 \( [! W' q0 p" ~ } b Range of additional gain: 0...+15 dB.1 Z& J' a# D; y8 W$ V
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents9 e$ N7 f# P6 H$ h+ s7 H1 ^# I2 P
the dBu value of an analog input signal which causes a full-scale output of
5 _( u, l6 Z, ]7 L- A the A/D converter.
e0 F# N U: p% w Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
8 p7 ` f; |- d% \: {. l the peak level is therefore +16 dBu. The “Input dBu FS” rotary
- i! W% S0 F: G: j2 f switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
$ z# y+ u% Q+ \* } Gain” potentiometer [3] increases the gain by 8 dB.
( y8 e: E+ v7 s+ o[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.# x) S! u& _! C: @( K0 Q" O
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
% ^# {5 ~% u" d0 U0 F, F; w have more body; percussive instruments are less aggressive.$ H$ o2 \& O0 x, s
The group delay behaviour due to AC coupling of the stages is different in
. o) I5 T+ p1 v, s tube amplifiers.( R7 _0 z8 i' X4 ]/ J% C
The “Bass Warmth” control allows to select the frequency range! d* [+ r6 W& a9 ^: O, P
(10...200 Hz) within which the effect is active./ j# B# k" B8 Q9 b V( O( ^* n
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
5 w$ }0 J% B- b- V1 Q& ^ Valve amps have a characteristic response, mid-frequency harmonic content
, S3 x+ x# j* e H1 Q is emphasized.0 |* A- [ p4 T& |/ b2 l
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.' ] E: ~8 ~" @/ N
The harmonics spectrum of a delicately overloaded valve amplifier is completely( ~9 x, N' Z$ \3 r
different from an overloaded transistor stage.) p) B0 O! }) ^
The “Gain” control adjusts a gentle overload while the odd-harmonics content
# B+ V. i0 D3 L- b; c can be adjusted with the “Clip” control.7 B4 k1 k* P0 N3 j3 ?6 d6 I
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
6 x l* N2 _- H1 O) a. h' y/ J dBu FS.
. }( i. d h f, L0 T- ~4 d[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the5 O4 I" F: a. r- [4 M
desired channel.4 T, s, a: o+ s) l
The “VALVE” LED is on when the Valve Dignifier stage is active.
1 u+ U* @8 `6 f% ?[9] INSERT INSERT function.6 H) r K# V( h4 @8 ?
First key pressure: INSERT POST VALVE, the Insert Send is tapped after. ^9 E& E7 n* V d) r. W8 M
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
$ I8 L! t, x; b and AES/EBU outputs., |$ q" d8 q/ G r6 {
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
3 a$ K9 K+ S, } the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
( `" \7 B( u2 S& D- F3 h the valve dignifier stage to the Line and AES/EBU outputs.5 C! M+ {1 ^, C/ v' Q( m( K8 K
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier+ v# I! f7 l3 ?* a
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
2 V, u0 y, @% R7 Y: b- n7 \ receives this signal; display: none).
; ]% P9 B# j; q: X( o6 w Insert Send and Insert Return are electronically balanced and equipped with
+ E& E" p a6 j, A* z8 _ XLR connectors.7 B) N) E8 s0 @: \. y, F9 B" ?) y
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or. o! }6 k4 _, Q7 M6 I
ADAT digital interfaces. Each input channel can be switched to one of the
& z' l0 P: z& {5 T% Y channels 1...8 of the multichannel interface. If desired, also a mono mix is
& P) j4 k, o1 T5 c/ _ possible by selecting the same output channel for both input channels.! L. ?% O' V$ ^/ r: {, e' z
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone: @: ?# `5 k6 G( l7 w: a1 `
channel.8 `# I7 I/ r% l: }
Can be operated only if the input gain selector is in Mic position. The
W8 w$ p0 S+ ?4 e: a; U9 V1 j setting remains stored when switching over to a line gain setting.
6 m, Z/ Q' ^" h6 ]1 [. r[12] Activates the high pass filter on the microphone inputs of the desired channel.: G; t7 w& U9 B1 `
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
! s" e6 [) v; d2 j6 ~$ v Can be operated only if the input gain selector is in Mic position. The; H2 M8 m2 c& _
setting remains stored when switching over to a line gain setting.: Z8 k7 w7 l {5 t8 U: `
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* O' T7 j* A. H' ]6 c9 q
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
" y; j, k! t6 c5 d) [" t5 R# n( G “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
+ O6 h/ |# J3 j1 s Noise Shaping (display: “16NS”) can be selected.9 Q2 i# c) O4 M0 c7 M+ E2 q$ v: @: ]. u
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
8 }* i3 g- q7 ~' k. ^7 j INT 48 Internal quartz reference, 48 kHz
+ O+ @4 w4 B' `- f INT 44 Internal quartz reference, 44.1 kHz% r9 _- ?; P% ~: f
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized), ~' x) Y2 t1 t9 t, N* B
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)1 E- u+ l- o' e' e6 ~
AUTO Selects sources automatically in the sequence AES-WCLK-INT$ }" B) h( {+ i# C7 L
VAR Indication only, active if the external source frequency deviates from 48 or7 a8 X) r9 U! h5 y1 x. i+ \
44.1 kHz for more than approx. ±3 %.
/ n# z0 o y! j/ H/ A4 m[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –& L X% i& A7 y- E& X9 s1 X" K) w$ |
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.( M% R! T0 S: t7 X- f# |
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce0 g# K2 m2 u7 `/ F. T
the danger of overloading the A/D converter with short signal peaks (if7 l0 O% a0 \6 Q4 P' z$ N: S+ a- u/ z
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
% ^/ Z8 v( u z% G7 S6 o allowing for approx. 6 dB reserve before hard clipping occurs, |/ f3 T" t3 K: F1 g: r2 L
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