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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3 m" \ }/ }4 ~
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
2 h5 x( a1 `- q8 F9 v, ?. l% K default settings. The subsequent settings remain stored in a Flash EPROM
5 l. P) u7 s0 A" N: Y2 w- q after switching the unit off (unit contains no battery).
& s. y6 A' |- ~8 y F( L[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position4 E2 C, f8 u6 Z
between microphone and line sensitivity setting ranges.% L6 E" u8 `9 |7 n% `+ l
Mic: Range –40...+20 dBu
5 [7 c2 l5 G0 t Line: Range +14 dBu, +24 dBu
0 ~, Q3 r2 Z- l[3] Fine Gain Potentiometer for fine input sensitivity setting./ O. g' d5 @8 z* k# g: A: T
Range of additional gain: 0...+15 dB.
6 ]. G3 S" f' a9 d% r# m Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
- a; X, o) E3 s3 h, u' E+ | the dBu value of an analog input signal which causes a full-scale output of( F( C' S! K! T8 N- O* p @
the A/D converter.' n) s! y' H" R3 [: O
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;# u0 ^% P+ ?% j8 ] h3 f: C
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
" d( d) F' J$ e' | switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
' T8 h/ F. ]: A( S# m Gain” potentiometer [3] increases the gain by 8 dB.
0 Z" F8 q. l5 N9 ^[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
* V! P2 H0 u' Y4 c' X6 C[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
6 S" Y+ e. D- h8 h: r have more body; percussive instruments are less aggressive.
* D' z" [; r: p8 H1 M) z" h: p The group delay behaviour due to AC coupling of the stages is different in$ D! x2 N' d; Q) X+ {( f7 X
tube amplifiers./ _7 a9 T1 ]2 @# a0 G+ _+ z7 r
The “Bass Warmth” control allows to select the frequency range
, ?1 }. ^' u s1 m" x' R (10...200 Hz) within which the effect is active.
0 b" P" e, Q# v" x' C! L! a1 n l+ K) B3 |[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
6 \; T* `+ E: r1 T: u Valve amps have a characteristic response, mid-frequency harmonic content4 N9 r1 K3 k6 ^7 O- B
is emphasized.4 H- d7 y# c: k: l+ y- i& x+ B
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
1 O" W* Y9 N9 t+ ]5 L# I The harmonics spectrum of a delicately overloaded valve amplifier is completely
9 F( W3 a0 T" q) [$ B- h% U different from an overloaded transistor stage.
8 {# m/ e, K+ r+ v$ e9 ] The “Gain” control adjusts a gentle overload while the odd-harmonics content
% b5 d$ Y8 x3 T, r* u0 w7 P4 Q can be adjusted with the “Clip” control.8 {* L& T/ l5 A( X- y9 I p' w; S
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24* s6 j' y/ p/ K1 D$ s8 _2 M
dBu FS.
/ Y8 P' K6 R8 T- T& R[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
6 q$ t7 }1 @* @0 V desired channel., W3 L) x" Z' Y# s/ C) M
The “VALVE” LED is on when the Valve Dignifier stage is active.% I- g- F' C* ?
[9] INSERT INSERT function.% P$ {% m& l4 X6 l/ e
First key pressure: INSERT POST VALVE, the Insert Send is tapped after- l2 w( c M& v2 [
the valve stage (display: “INS”); the Insert Return is directly fed to the Line( c) K+ G0 Q$ b. n7 A, u
and AES/EBU outputs.
, u5 R- O% {$ d Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before- `2 p v* p/ a
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via& X, L+ G" l0 k P; U# O
the valve dignifier stage to the Line and AES/EBU outputs.& K' a: G( B6 U7 ^. m
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier' @ E5 D6 A; t& S0 m* N! _& ?
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output c" U, t3 l! Z5 d3 e
receives this signal; display: none).) V. c2 s0 Q# D H0 N( |
Insert Send and Insert Return are electronically balanced and equipped with
. F% _% M+ @ G3 ~, W XLR connectors.2 r- c0 B( ]1 l) i! L
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or" c4 V: M, r; K6 B" W! G" L g
ADAT digital interfaces. Each input channel can be switched to one of the' _2 P3 I4 ?1 O- u4 ~4 ~- G
channels 1...8 of the multichannel interface. If desired, also a mono mix is
6 T: g# |. Z1 u. C possible by selecting the same output channel for both input channels.. Z6 o C J1 b U! e6 j5 F
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, G" d, [; ^, s) D" F3 V- X# N channel.
0 O( ] Z5 D* U( R# }" o" a+ q Can be operated only if the input gain selector is in Mic position. The0 w9 v" L6 u5 i% \* T8 x
setting remains stored when switching over to a line gain setting.6 m2 L, j. v! V$ T: M3 P5 x% F
[12] Activates the high pass filter on the microphone inputs of the desired channel." `( Q; C% S1 T1 J# h
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.' ^2 u! i, ^& g; c- T% y
Can be operated only if the input gain selector is in Mic position. The* H7 a h t9 y$ d. z6 u
setting remains stored when switching over to a line gain setting.
- O) \6 f& A. x- O[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
# {) @. U% ` e; X[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
" ]( _2 D- V! _! M3 y “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
/ b! `& {. f7 {% d9 A Noise Shaping (display: “16NS”) can be selected.3 Q. `/ `! R5 I" m. r4 O
[15] SYNC Selects the synchronization source for the unit. Possible selections are:7 S8 ^, q, k# G9 U6 l
INT 48 Internal quartz reference, 48 kHz1 \; }7 n0 n+ y; t
INT 44 Internal quartz reference, 44.1 kHz% {4 P" e; J5 a% I6 ~% s$ |. E
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
) q( Q" `& T" O8 R" r" F AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
* r& j7 F2 J- I( N3 @4 j! m9 S AUTO Selects sources automatically in the sequence AES-WCLK-INT
1 C4 x7 @! A: u/ a: m VAR Indication only, active if the external source frequency deviates from 48 or, R( o; l: e8 P5 P; _4 u2 i3 h1 O
44.1 kHz for more than approx. ±3 %.6 R5 C4 T9 C6 }6 V* r
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
! J; T/ q7 E2 w0 O either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
- s U& |8 u! e6 I# u6 t; D[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce9 K/ O. o6 z' P4 v/ N- E
the danger of overloading the A/D converter with short signal peaks (if
2 v% l3 b6 ]& H/ O; H+ |/ i8 ~/ M' o active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,/ u* h0 v2 a! @0 k1 v) n. j
allowing for approx. 6 dB reserve before hard clipping occurs1 q, o" B" k. s- y! A
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