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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 & T( V; r/ S2 q) P
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英文电子说明书
5 v, e+ L3 O4 X* S; k' O; n( Y[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
0 K" L% i8 \7 m9 @ default settings. The subsequent settings remain stored in a Flash EPROM
d! C0 i. t3 k' U/ r- F, Y after switching the unit off (unit contains no battery).
* P$ O) Q0 i5 e[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
9 m& l' O) V$ F+ M6 a8 D between microphone and line sensitivity setting ranges.
, i7 u8 E e* G3 D Mic: Range –40...+20 dBu
) `# ?6 }" f0 Z+ M Line: Range +14 dBu, +24 dBu# ]- A! G. X7 W, ^2 Y
[3] Fine Gain Potentiometer for fine input sensitivity setting.! h0 q. a/ v3 a+ j
Range of additional gain: 0...+15 dB.0 T' K4 g5 B4 Q: _+ F; C0 G0 S
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
# c+ a n* `! A9 W4 Z6 R the dBu value of an analog input signal which causes a full-scale output of
& [. {* j/ ?- T+ r3 g the A/D converter.
, x7 \0 s) ~& u9 x: B Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
* k: Q5 i$ O8 ^) g; @1 W the peak level is therefore +16 dBu. The “Input dBu FS” rotary
9 \, u- I" Z5 V6 ~1 Z5 g# ` switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine7 ]7 j! B* ]/ ?0 l
Gain” potentiometer [3] increases the gain by 8 dB.
; @. u/ L$ Y: _; M. ~% [7 b- Z" {[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
6 M- s7 N. s( G# B[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
6 Z, ?8 U6 ?- v: f% F9 ~ have more body; percussive instruments are less aggressive.2 s( k3 o1 l8 b
The group delay behaviour due to AC coupling of the stages is different in: M& J4 F8 j9 @# p% N! {
tube amplifiers., k( j2 a, t) c4 N- \6 [) ^
The “Bass Warmth” control allows to select the frequency range
4 |, e: M. q4 c (10...200 Hz) within which the effect is active.
1 `* X2 D. X. r[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
, z4 g4 G, k2 p: u T Valve amps have a characteristic response, mid-frequency harmonic content
' a1 ?; C; w0 D8 M is emphasized.) D' v% t: Z5 N: l: [2 b W
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.0 K$ l# k" n0 c+ @! Z9 ]! L
The harmonics spectrum of a delicately overloaded valve amplifier is completely
. e: a8 W0 a6 N( |, g different from an overloaded transistor stage.# s8 n% j& I) k% a( Z1 k: i0 Z) o
The “Gain” control adjusts a gentle overload while the odd-harmonics content' X3 O* m4 E' d ]. @6 {5 V' p
can be adjusted with the “Clip” control.
4 c n; S% X0 ~4 F \3 ?# {( @[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
* D+ \/ u# P) w dBu FS.9 w( {- g3 b7 H, l
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
! @% V/ _$ Q& G k) ^# l% u desired channel.
) k) y) c& O5 a) F5 | The “VALVE” LED is on when the Valve Dignifier stage is active.% X' u. }/ t$ h" q
[9] INSERT INSERT function.4 g$ }, `' Z4 J, B P5 K
First key pressure: INSERT POST VALVE, the Insert Send is tapped after" u- \% K2 O7 D3 l9 K
the valve stage (display: “INS”); the Insert Return is directly fed to the Line% g! f, ~, S+ A+ }8 c8 T
and AES/EBU outputs.2 U1 s" K+ y `5 r' V9 a
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before5 r9 d2 w8 `$ D: k, r+ v8 Y
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via- M1 }" q% Y( ^% `
the valve dignifier stage to the Line and AES/EBU outputs.: [1 t6 g- s& m; e' T
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier. L. w/ q: b+ B
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
: r( ]+ |$ ~" Y/ b! J" t receives this signal; display: none).2 ]6 S4 X3 I: w& j* e6 L
Insert Send and Insert Return are electronically balanced and equipped with
! O2 g: e. N0 H$ a& m2 E8 D& d XLR connectors.
& j9 D2 \" o3 a9 ^8 X, O[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or" h1 I/ w6 X% T4 d3 Y# Z; Q
ADAT digital interfaces. Each input channel can be switched to one of the
, l0 l6 g5 R# R3 h8 a channels 1...8 of the multichannel interface. If desired, also a mono mix is: m8 j& d" T4 S$ \* _
possible by selecting the same output channel for both input channels.
& l" c, I5 I8 c9 Y[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone0 g) s' F2 e& Q, g$ \
channel.
, F/ ]$ U2 \5 t8 Y9 c2 O6 e Can be operated only if the input gain selector is in Mic position. The
- k% s) B" V8 |, H C setting remains stored when switching over to a line gain setting.
3 l# q6 N4 r1 @[12] Activates the high pass filter on the microphone inputs of the desired channel.. q: l$ U- X: q8 m7 z; j6 q
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
( o( K4 }6 M0 y0 x. F0 z Can be operated only if the input gain selector is in Mic position. The, i1 e# Y( ^7 l$ t
setting remains stored when switching over to a line gain setting.
1 M0 r' ?' d- q0 S% m4 J[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
5 d0 Y6 t J8 P% t$ X6 I7 u[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
( X9 I+ T1 x& L7 f “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
( B2 T* W7 @6 } Noise Shaping (display: “16NS”) can be selected.
7 C5 G, V% m* d9 r0 j0 S/ _1 u[15] SYNC Selects the synchronization source for the unit. Possible selections are:6 `6 a+ v# B- ?, g2 r& k
INT 48 Internal quartz reference, 48 kHz! ] ?9 b2 y: U8 X$ x
INT 44 Internal quartz reference, 44.1 kHz- D4 r/ O. x* X2 J, [
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
: o- \0 t) C1 T5 L1 ? AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)- h% Q7 D& p7 s% o! Z4 Z" a
AUTO Selects sources automatically in the sequence AES-WCLK-INT6 K( ]$ H& R7 e; \
VAR Indication only, active if the external source frequency deviates from 48 or
! k$ N4 J8 v- n8 E. y 44.1 kHz for more than approx. ±3 %.$ j k9 x0 A/ K0 j! `" t' H- e n1 A
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
; y4 m+ [' N; q1 n, h7 ^/ P either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.8 V1 Q! \4 \7 y* _: c
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce5 x* B( h6 ^$ d* ?5 q
the danger of overloading the A/D converter with short signal peaks (if
) [# X5 J. H6 @: J* e+ Y active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,8 B n% y+ ^! z" U0 k% A
allowing for approx. 6 dB reserve before hard clipping occurs( C) }3 Z9 ?8 f/ E0 U' J# W I: s1 @
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