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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 , J1 b" n i6 H7 g. }
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英文电子说明书1 Z8 i% g1 H2 ?. y9 F
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory3 ]" C7 C9 L; \2 a9 N' ?# T+ `+ p
default settings. The subsequent settings remain stored in a Flash EPROM: [# j. h0 V* I- N9 E! h( y
after switching the unit off (unit contains no battery).
2 Y4 a! |6 i# t6 H, M" Z) O7 a& d' q# ^* K[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
1 D& T" o2 m2 v' O between microphone and line sensitivity setting ranges.
1 ^7 q7 R, q+ C& C Mic: Range –40...+20 dBu/ P8 d, A' P& [ K1 W
Line: Range +14 dBu, +24 dBu
6 C7 a2 e1 N: d; Y' M/ k7 q[3] Fine Gain Potentiometer for fine input sensitivity setting.
! H, f' X; W0 t8 J: j* T# [ Range of additional gain: 0...+15 dB.
4 v7 ^% ~) F& n: E+ ~ Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents9 |3 _& w9 ^& O l8 b
the dBu value of an analog input signal which causes a full-scale output of* O+ z0 K5 R1 R u. `. D# f4 t
the A/D converter.7 H( e, @% k( d/ l: O
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom; k6 r7 i) {7 J& G0 @
the peak level is therefore +16 dBu. The “Input dBu FS” rotary9 k" H2 |" Q* O3 Q. `( v
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine' r( b: W4 b2 a" x4 h/ P
Gain” potentiometer [3] increases the gain by 8 dB.
$ D" F* C( U/ e[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.1 F% b: M$ O( B! T7 Q& `8 r9 l
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
( x' |2 R- A: U/ Y- _- X0 r have more body; percussive instruments are less aggressive.
! \( D: Z% p5 [* a+ B The group delay behaviour due to AC coupling of the stages is different in& k6 J+ z; e2 p1 J1 _% M
tube amplifiers.
2 u2 @+ z- X( x+ S, D1 G The “Bass Warmth” control allows to select the frequency range
# C+ d$ o9 W. ?& e! w( ]* l (10...200 Hz) within which the effect is active.
$ {" f2 _* @' y[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.9 Y& i q: n( |' Y
Valve amps have a characteristic response, mid-frequency harmonic content2 }0 {: z- R% s2 S) {$ l
is emphasized.
8 d8 [ W! u3 O$ D' D6 y[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.( C4 ~) V9 A+ X3 s, P4 ]- ]
The harmonics spectrum of a delicately overloaded valve amplifier is completely
2 x9 K6 W b% m4 o% ] z B3 I2 r different from an overloaded transistor stage.
1 E- L3 W" q$ F9 s* _$ a The “Gain” control adjusts a gentle overload while the odd-harmonics content
4 K' t! A3 S0 b n m6 N can be adjusted with the “Clip” control." m) `8 N5 {% O% a% J U
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
- f! y5 W; B7 X% n9 m dBu FS.# I7 m1 Z. Z) e! t+ ~# @
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the! Q- t0 n, |$ Q( E0 T
desired channel.( R+ P# T0 T% X" ~- [
The “VALVE” LED is on when the Valve Dignifier stage is active.
+ o1 F9 P8 m1 z: S6 k1 Q[9] INSERT INSERT function.! J2 E# | F) ?
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
1 [# u7 Z# L+ w! \ the valve stage (display: “INS”); the Insert Return is directly fed to the Line
1 }/ `) P% ~9 Q' |; g) H and AES/EBU outputs.; ^% ]' s7 a( s: ?' J6 p* T& L
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before0 t- f8 C8 ?2 F: {. [0 V# h
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via* B! Z+ n# o, R
the valve dignifier stage to the Line and AES/EBU outputs.
4 d" w: q9 C2 Z B# u) K Third pressure: INSERT OFF, the input signal is fed via the valve dignifier! r# u2 B& l0 ]- v, h" ?
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
; P0 m# X' a J6 I4 L2 t receives this signal; display: none).
& k. N1 ]% \1 |1 }! ~ Insert Send and Insert Return are electronically balanced and equipped with
# ?4 S' U( [! ~1 a8 j XLR connectors.
$ k& I+ v0 ~) [7 z; n3 Q[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or; \, ] W: W3 l; M
ADAT digital interfaces. Each input channel can be switched to one of the
7 [5 ?) s3 x# Z' s ~2 d channels 1...8 of the multichannel interface. If desired, also a mono mix is
8 e! |( ?, [5 i$ a$ V; q9 [# A& L possible by selecting the same output channel for both input channels.
- [9 ]" l8 ], H; q( K* h[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone) l; B8 \! t# p/ [( H: Q
channel.
. l0 `2 ~- e) H% h5 U" b Can be operated only if the input gain selector is in Mic position. The
9 d5 j$ |# U6 f6 d& A- C setting remains stored when switching over to a line gain setting.
) S1 J0 d0 F5 S; n8 h[12] Activates the high pass filter on the microphone inputs of the desired channel.
8 J# Q6 X1 P' f' R3 q6 w0 a Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.3 O* X% D; T! X/ n& o3 ]% E' D
Can be operated only if the input gain selector is in Mic position. The, T1 n" n; y) N
setting remains stored when switching over to a line gain setting.
( r5 l9 s: i/ l% e' }[13] Ø Toggle key to activate the phase reverse switch of the desired channel.& y+ _, n1 q9 f' Z8 T+ t( M9 Q, A
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:+ c; ^6 ?- m9 ~9 x% M
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
+ F& o l5 K& j' Y Noise Shaping (display: “16NS”) can be selected.9 J: |) o9 j) U& c; c6 @
[15] SYNC Selects the synchronization source for the unit. Possible selections are:+ y, U! p& ]& H% P9 ]
INT 48 Internal quartz reference, 48 kHz. P- _1 n9 N9 V/ R+ g$ k
INT 44 Internal quartz reference, 44.1 kHz
* u$ ^6 |9 X! Q( C WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)% e: x% Z: I4 g3 v8 J0 b
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)! n" D o3 U( J$ u5 |
AUTO Selects sources automatically in the sequence AES-WCLK-INT" j. I& V0 R% z" L; X, ^- v1 b
VAR Indication only, active if the external source frequency deviates from 48 or
4 C1 `% y T6 T% f4 t 44.1 kHz for more than approx. ±3 %.; U1 h. \0 J* L2 c V5 K& O; X
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
0 c1 n. J+ A- l, [9 F- y" x! W either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
2 b4 l# U+ H. k7 _: V) n[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce/ E; R0 F: ~8 x7 U! J
the danger of overloading the A/D converter with short signal peaks (if
) r* K" Y! r2 s- K* j) k active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,8 k7 }; x+ w1 _: R" b( ]4 ]
allowing for approx. 6 dB reserve before hard clipping occurs4 p3 H$ O% J" r6 x* j7 R6 U8 ?
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