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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$ m9 j1 Z: e3 h+ T: ^! o1 w
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
1 T4 v; U9 [- @& u' V8 c5 R8 {% B default settings. The subsequent settings remain stored in a Flash EPROM; l& @% w* P& b- h( I
after switching the unit off (unit contains no battery).
0 _/ [, [$ |2 H) M+ V: m- K' \[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
+ b& N: C4 ~6 }3 L& O+ d between microphone and line sensitivity setting ranges.
5 I- D) e" f% Q2 n: z: L( u4 I: y Mic: Range –40...+20 dBu- e5 ^& J1 c3 b) K* m G! c6 A- C$ Y
Line: Range +14 dBu, +24 dBu
& O' B0 x- J, T/ n3 i& I[3] Fine Gain Potentiometer for fine input sensitivity setting.
- d* u# _8 B8 h& L8 t8 y5 x Range of additional gain: 0...+15 dB.9 `5 @8 |- c- q- i, |/ b
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents( Y, x+ v# [% A
the dBu value of an analog input signal which causes a full-scale output of
: q' p0 ?4 B, a6 _$ _" n! G the A/D converter.
7 }; I) W i/ _) j. @/ L Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
/ M8 \. B& n- | the peak level is therefore +16 dBu. The “Input dBu FS” rotary
/ R y9 }* {. a' _) Q; n switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
; i: ~5 q: S1 i+ q! d' E" K Gain” potentiometer [3] increases the gain by 8 dB.( o7 g2 N2 k' P% n; w) | F
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.! [: Y* x3 L3 a( X4 r# k
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
0 V/ S, z( N* |" { have more body; percussive instruments are less aggressive.- u9 K s- f; s1 l
The group delay behaviour due to AC coupling of the stages is different in
: t( z1 a- i0 A4 } tube amplifiers.
1 ?# y1 y& Z- I _: U% l The “Bass Warmth” control allows to select the frequency range
; ^- E% _/ ]% M3 D, V (10...200 Hz) within which the effect is active. \/ ^+ ^! o# q- W% H, D0 h$ n! p* d
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.3 k4 r. A& v) ]$ l' x
Valve amps have a characteristic response, mid-frequency harmonic content: M& _7 C7 p& M. w2 R6 T+ }
is emphasized.. A+ P. @: C, c4 l' S+ S
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
4 l3 o; H' f+ C/ _- d1 @ X The harmonics spectrum of a delicately overloaded valve amplifier is completely; ~( }0 a) a/ X" s' }) i1 ~: k1 K
different from an overloaded transistor stage.+ p/ z. [3 Z8 M5 Y% i/ u+ F
The “Gain” control adjusts a gentle overload while the odd-harmonics content+ |- R/ |$ G- P) q9 o4 J1 ]
can be adjusted with the “Clip” control.
* U( F7 f+ v' C* X; m[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
" b% f! y: s! A3 Z' a6 O4 h dBu FS.
& N9 t. N6 \0 m" H# j[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the6 E# j6 |8 g* c3 K) d
desired channel.
% f5 \8 b1 D5 i& }; l# F The “VALVE” LED is on when the Valve Dignifier stage is active.5 \, c/ ~( ? O- ]9 h1 z- c/ t: i
[9] INSERT INSERT function.
$ D% |+ F) \6 E0 F5 J" i& D First key pressure: INSERT POST VALVE, the Insert Send is tapped after, _0 \, |; e; a* d$ w" r/ k% }, O
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
7 [/ p+ b/ n+ d/ o and AES/EBU outputs. n, b( i2 M. {* C, @) ~ k
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
' N1 y/ \* m4 C6 J/ P the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
: l2 i o: p1 K; ^6 o# k the valve dignifier stage to the Line and AES/EBU outputs.
( L0 G& D; I" s | Third pressure: INSERT OFF, the input signal is fed via the valve dignifier4 b' q! Y; \1 \5 ]2 `: j
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
7 T: G- `9 x! ` ? receives this signal; display: none).! q# x$ \: h) M
Insert Send and Insert Return are electronically balanced and equipped with
/ i* Q1 }4 K7 J! @! w6 \0 x XLR connectors.
) c. q4 r- M! c! ^. b[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
3 T; X5 E' k& S' j* o3 J ADAT digital interfaces. Each input channel can be switched to one of the
7 J) @8 y, W! m( M. e6 y' R channels 1...8 of the multichannel interface. If desired, also a mono mix is
( a' A2 R& V4 o+ q0 |; J: s7 [ possible by selecting the same output channel for both input channels.
1 q9 W' G' `: |( y. o- U+ [* u[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone! k2 n. A7 `0 Q4 [
channel.
2 Q. Z" x/ b1 R% ~1 w& L Can be operated only if the input gain selector is in Mic position. The0 _6 b% c+ H3 ]% w
setting remains stored when switching over to a line gain setting.
" V ?8 q0 J' m4 D! z! }* y- C" j[12] Activates the high pass filter on the microphone inputs of the desired channel.
; `% b% x# n# H/ V9 o2 t" K3 H* W8 K Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
( l) }/ V" q( f$ J& C! D: _+ R" x Can be operated only if the input gain selector is in Mic position. The
* Q0 n1 X+ c) _5 f9 v setting remains stored when switching over to a line gain setting.7 @, O) T+ |$ P+ R
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
8 J1 ], A& }" Z8 Q! v: ~[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
+ N! ^# I, V4 {2 v5 s# N6 C1 I) h “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with- R j4 G& N% a6 U) x+ v
Noise Shaping (display: “16NS”) can be selected.
' _: k! R5 H* i/ Y! u; Z& Z[15] SYNC Selects the synchronization source for the unit. Possible selections are:0 T. M4 `" _( C" {6 f- z# O, o- |
INT 48 Internal quartz reference, 48 kHz. K! r* a2 z6 V. m' I) C
INT 44 Internal quartz reference, 44.1 kHz6 _* k) U! a; u9 M5 C( a2 o
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
. |& p4 q: k. o1 P AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
% C& J2 r9 x7 }2 o$ B# k+ U2 Z AUTO Selects sources automatically in the sequence AES-WCLK-INT
5 Y7 W8 t0 Y. \ VAR Indication only, active if the external source frequency deviates from 48 or+ R1 e+ [ e8 m* R4 v
44.1 kHz for more than approx. ±3 %.8 j, T( k: K7 K5 z( S2 |* }# Q4 }
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
: k( Q. N3 `- Q/ L either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.1 B5 x. F- K6 v: r& s. D
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
1 y F/ p6 ]/ }/ y4 @, R4 E the danger of overloading the A/D converter with short signal peaks (if
]' h; w1 o& x1 { active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
& K7 p. s6 o1 s) [' b allowing for approx. 6 dB reserve before hard clipping occurs
6 ^' n+ U. R7 f) P# R( f, {) ] * W0 \0 l$ b% J+ o9 g) Q+ @# @! O" C
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