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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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, t0 e( q& v3 `" ?, p/ Y9 q C英文电子说明书! k/ Y* Q$ N% |3 g% z5 m4 l
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory& a$ t6 }( Y4 }3 T
default settings. The subsequent settings remain stored in a Flash EPROM1 e C; b( O4 r; A9 U) L- K
after switching the unit off (unit contains no battery).: ] k+ P4 n, G4 p( D" r: f
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position# z' i! [, D# Y7 r b7 p9 @
between microphone and line sensitivity setting ranges.
5 V: K9 W% L7 T" ` Mic: Range –40...+20 dBu
5 t4 f& p: c S; s. a; v2 \0 D Line: Range +14 dBu, +24 dBu
2 }9 s$ j6 |5 d8 y/ z1 `[3] Fine Gain Potentiometer for fine input sensitivity setting.
# ^# A" \& G( ?; F Range of additional gain: 0...+15 dB.
- D g7 V2 P" Z) a+ n Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents) q' f+ `) [$ d# W# Q& L
the dBu value of an analog input signal which causes a full-scale output of
- G% Z- Z* C5 s/ I) i X8 m the A/D converter.
/ M5 o; h4 w y5 a1 S Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;2 E: j1 V% u) Z: \8 W3 M% j
the peak level is therefore +16 dBu. The “Input dBu FS” rotary, i/ @8 h) A' L9 Y+ E$ @/ H
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
5 s* R' b( `* P0 C8 o Gain” potentiometer [3] increases the gain by 8 dB.* V* u/ x4 A0 ^
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
: M* y3 s3 s. ]$ y; u- v[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
/ s# ~/ [1 M2 f7 `2 f( j have more body; percussive instruments are less aggressive.
]6 J r p2 ?1 t% E4 f, F The group delay behaviour due to AC coupling of the stages is different in$ k+ T4 t. e1 l8 L
tube amplifiers.
9 e( N" K3 O8 X/ p1 P3 p$ m The “Bass Warmth” control allows to select the frequency range
1 W9 _ J4 G- N) x j5 V4 {4 G+ g (10...200 Hz) within which the effect is active.
4 u" }! e% q2 S1 r, g5 Y[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
z* T- E# ~0 o d* Q8 [ Valve amps have a characteristic response, mid-frequency harmonic content
, A4 J/ x. ]4 H9 x* u% k is emphasized.: F6 h4 X3 F/ y7 z
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
8 g" i% h1 z5 z: C7 @3 w* @ The harmonics spectrum of a delicately overloaded valve amplifier is completely
+ f, D3 _7 V7 E/ h different from an overloaded transistor stage.! r3 B/ `4 W- `, ^( T
The “Gain” control adjusts a gentle overload while the odd-harmonics content
( `/ \9 e4 O$ N' G can be adjusted with the “Clip” control.
& ]4 a$ t& {" f( X2 \, F[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24$ b/ q: ~; g" h
dBu FS.; M4 |; v2 T$ J1 b3 C. r
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the; N; G W( o, }
desired channel.1 O: O. j$ l+ `2 w
The “VALVE” LED is on when the Valve Dignifier stage is active.
, Y+ n( ^$ m" o6 z, l2 }[9] INSERT INSERT function./ U, U& \& e- e% ~4 e
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
* G, q4 ? y% d1 g- i ^* X& I the valve stage (display: “INS”); the Insert Return is directly fed to the Line) U7 F. t+ m) s
and AES/EBU outputs.+ f# j5 s# I/ Q, ]6 a7 E4 m
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before7 E* e) {: U' }* D. Q
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via# g; l, I# A! x7 b9 ]0 i. g" q
the valve dignifier stage to the Line and AES/EBU outputs.
. `1 c' n0 h, m. x0 h0 P& c. v Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
1 ~1 [9 q8 [; a2 F1 u; B& H3 K stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
% R0 K9 \; _; }, O/ v: a+ m- T# ] receives this signal; display: none).
) N# C5 T* I) ]7 Z$ F8 f! @ Insert Send and Insert Return are electronically balanced and equipped with# o' C, g F5 x7 G1 b r6 ~$ n+ Z" q
XLR connectors.
" F; Z, n" T7 q6 c; k[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
9 n3 T/ V( h8 C8 K; V* W; B4 ~( Q ADAT digital interfaces. Each input channel can be switched to one of the# P; C- B; N2 D
channels 1...8 of the multichannel interface. If desired, also a mono mix is
5 K7 Z4 T2 R# N possible by selecting the same output channel for both input channels.
- h u' ^! a) A! J[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone( b% }% g" z$ i& l# L1 R% J1 t, Q* k
channel.
5 q( h( f0 J9 q) o Can be operated only if the input gain selector is in Mic position. The2 L6 Z0 x3 l; q% T
setting remains stored when switching over to a line gain setting.
0 @! p @4 p( @8 P( e3 P, g4 E[12] Activates the high pass filter on the microphone inputs of the desired channel.6 P% o: h% T ^. s% H6 S' B, v
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.4 `& |# x! F* u9 |# |5 v: `
Can be operated only if the input gain selector is in Mic position. The
5 r2 V. _8 O3 [- K/ D setting remains stored when switching over to a line gain setting.8 b; v% O0 B/ n! x' v
[13] Ø Toggle key to activate the phase reverse switch of the desired channel., g/ ]6 R, d( f7 c; i0 D0 F
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
3 r' p" b6 F% d+ E! l' L “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with" Q/ d& P" I$ m2 C& _$ Z
Noise Shaping (display: “16NS”) can be selected.
( E- \$ ~3 `4 E[15] SYNC Selects the synchronization source for the unit. Possible selections are:
9 T8 W! G2 |) |& \ z1 C3 {; i8 i/ } INT 48 Internal quartz reference, 48 kHz& t, B$ g/ E& t3 L. b' I+ F
INT 44 Internal quartz reference, 44.1 kHz
, U' t/ y% K6 ~# ?3 i& Q% I WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)% Y# k: s) j2 @' O
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( d; G [ F# `# C+ T+ X( n
AUTO Selects sources automatically in the sequence AES-WCLK-INT
& W& G/ D" U; P* t" S VAR Indication only, active if the external source frequency deviates from 48 or" [5 }3 J) o) f7 V! \$ L
44.1 kHz for more than approx. ±3 %.
' Y e3 ~& w0 {% [, I) u7 H[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
7 c- }1 C5 ^ P( p& G& V either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.1 ?" T1 O3 K. I+ M" y
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce$ R; O& h! R8 Y5 H6 v
the danger of overloading the A/D converter with short signal peaks (if
9 V/ x1 q2 v# Y3 e( B5 r( v active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
6 T/ V& [- T: @5 U allowing for approx. 6 dB reserve before hard clipping occurs
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