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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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* Q; P( R) O0 p英文电子说明书& U; _1 O2 A0 J# L4 m
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
1 X, ?( a# T/ J) ` default settings. The subsequent settings remain stored in a Flash EPROM$ z* U4 }4 _* O* L k4 H- b/ }
after switching the unit off (unit contains no battery).7 H) K( o" N8 M" k6 e V
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
! D" h! H) G$ X1 U. a) I4 x between microphone and line sensitivity setting ranges.+ _3 Z/ ?/ U' L N* O) v4 T' n
Mic: Range –40...+20 dBu) Q" e; E( |: s# q s0 Y( t
Line: Range +14 dBu, +24 dBu) O3 ~/ ~5 `- N# P5 y
[3] Fine Gain Potentiometer for fine input sensitivity setting.8 J7 ^7 b* [3 c0 e0 P' t- U
Range of additional gain: 0...+15 dB.: S2 M- g( v1 H7 v) a+ q- n# ]% K
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents0 E) N' `* W* c% r5 X
the dBu value of an analog input signal which causes a full-scale output of
8 B) E3 k: e" v( u' p3 p the A/D converter.
$ {) H( D5 u! I0 V' t# o5 e: ] Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
& h4 O3 ^& s' M" h2 b( S+ B the peak level is therefore +16 dBu. The “Input dBu FS” rotary& v3 [* N) ]6 k4 h
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine, P+ g7 a, V! b$ E* K% M7 W
Gain” potentiometer [3] increases the gain by 8 dB.! F$ w3 T: n' C/ a, o5 i$ j
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
1 d F* d- q% U$ Z5 t0 b! L4 ~" O4 s" h[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals* J. |: H( H+ \0 V' k; w! W
have more body; percussive instruments are less aggressive.- Y8 G2 p/ D c7 r! R4 s
The group delay behaviour due to AC coupling of the stages is different in
# V7 i: Y* s; v1 M5 h tube amplifiers.0 z9 @5 N7 x6 O; |+ \: e7 H/ I
The “Bass Warmth” control allows to select the frequency range
. I6 }. Q+ j, l4 {& j i [- u2 I1 B (10...200 Hz) within which the effect is active.5 E+ b `! w$ h- G. x/ C+ I3 f1 ?& q
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.0 C! w/ \& W% e$ [) T
Valve amps have a characteristic response, mid-frequency harmonic content3 W/ ^4 d) m! m& `, }
is emphasized.
5 U$ N B6 k! z2 n3 U[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
: y |2 n3 t" \! l, N( X! s The harmonics spectrum of a delicately overloaded valve amplifier is completely* b% ?. |9 t6 A# m5 h
different from an overloaded transistor stage.
6 D# A2 b1 C" `4 @+ C6 |, | The “Gain” control adjusts a gentle overload while the odd-harmonics content6 O8 d' H+ Q! g* @* w" ]4 F! G, ]
can be adjusted with the “Clip” control.
& M4 w" q! l8 \, N) J# @! ][7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
# {4 } d1 A B5 ?3 Y dBu FS.
5 b! f4 i, D& w" q! ~[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
' n9 J! \; _0 i7 l" X. ~ desired channel.0 s. i/ D6 P# P: Q) k- i
The “VALVE” LED is on when the Valve Dignifier stage is active.
, p3 S8 Q3 N+ I7 ?% M4 d2 `4 n[9] INSERT INSERT function.9 u) V2 i5 ?6 R X0 F( m! _# m4 C
First key pressure: INSERT POST VALVE, the Insert Send is tapped after! d2 u$ a4 D, L7 F/ h3 e
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
/ d5 l$ d! C* P and AES/EBU outputs.! e. j) `7 M0 d6 ^; l( d% Z
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
- ?% S" x' r( a' @ the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
* ^1 @) r2 r2 h* U the valve dignifier stage to the Line and AES/EBU outputs.
2 F, Q; L% E7 m' j1 { Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
e! }" Q) K2 P! L* p stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
/ ] |, f( i8 d1 G) _* x receives this signal; display: none)., V- S) \0 o6 J" z
Insert Send and Insert Return are electronically balanced and equipped with
; ]0 i) O( Y& D" W+ Z XLR connectors.
% n& `( o1 c+ v. Y( J' K[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or" _, L( K$ x1 X# f, J7 h* T, r
ADAT digital interfaces. Each input channel can be switched to one of the8 F8 o! U7 r5 \7 w' ^& x2 c, j5 b
channels 1...8 of the multichannel interface. If desired, also a mono mix is$ P9 P# ~& Q9 g b$ ?! e7 ~
possible by selecting the same output channel for both input channels.( J/ y' k; a& i3 ?2 D. g# d \
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
% ~3 Y8 W: z* {, M+ u" ~( o channel.2 e" [! |: |2 F
Can be operated only if the input gain selector is in Mic position. The" U7 ?& a7 l+ A4 \5 r
setting remains stored when switching over to a line gain setting.
' W% K9 Q) I! d, A: ~[12] Activates the high pass filter on the microphone inputs of the desired channel.* e8 K- m; ^% l+ _8 m3 b
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.* f: u" n) l* o& d& _* u- S
Can be operated only if the input gain selector is in Mic position. The2 D4 Z3 [$ z6 [
setting remains stored when switching over to a line gain setting.
2 Q) P( O2 L4 A6 w6 c3 j: O, f" n5 Z# B[13] Ø Toggle key to activate the phase reverse switch of the desired channel. T8 y K9 z" a: z d
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
; n" [" H k5 G/ Z “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
3 ~1 t# [& N* o v( P) ^/ N Noise Shaping (display: “16NS”) can be selected.
2 b( |' X5 L' x( g[15] SYNC Selects the synchronization source for the unit. Possible selections are:# ]. J1 P+ ?' @! J6 L
INT 48 Internal quartz reference, 48 kHz
4 I! P. z7 X5 l- @8 @ INT 44 Internal quartz reference, 44.1 kHz
* N9 \: D4 ], C B WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)0 E. j. ~* _1 j7 z
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
6 b0 \% v g! \3 Z AUTO Selects sources automatically in the sequence AES-WCLK-INT$ `. O! h9 _3 h5 c5 {
VAR Indication only, active if the external source frequency deviates from 48 or
6 {3 b0 f+ h5 q1 ~; C+ [ 44.1 kHz for more than approx. ±3 %.' q4 O$ g* U' t: a+ I
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –7 m @4 ~( `( A& @# o) e2 [
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
3 [3 ^# \1 I" p% C5 _9 w8 }[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce. H5 u$ t5 x! T: K; L% O+ {
the danger of overloading the A/D converter with short signal peaks (if# w* K/ F. |# L9 S0 N
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
# V" {# L7 ?/ e7 O allowing for approx. 6 dB reserve before hard clipping occurs
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