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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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7 M0 i' t6 Q9 K英文电子说明书$ V% n* H5 q& _ S7 a
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory( m% Y5 u$ r0 K; a6 K4 g
default settings. The subsequent settings remain stored in a Flash EPROM
6 A1 ?* }" w2 { after switching the unit off (unit contains no battery).
, y# P, i6 R( F+ a[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position% P; S# v0 K$ t
between microphone and line sensitivity setting ranges.4 F; f, R3 v- e) w
Mic: Range –40...+20 dBu! A% ]* n" y' {0 e7 u
Line: Range +14 dBu, +24 dBu9 e- N. P. R/ s' t% ^. f
[3] Fine Gain Potentiometer for fine input sensitivity setting.
9 t% h0 l6 L/ d1 y Range of additional gain: 0...+15 dB.
" v! `" R4 \3 C( {, W/ ^* [- {/ z, u; z Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents/ c; T+ j& u, l% A5 @2 C
the dBu value of an analog input signal which causes a full-scale output of
, E: B" o3 [1 q, i- M2 W the A/D converter., ?) l; E& s$ @# a w
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;7 @) l. D3 R: e3 m+ F' m& z) Y
the peak level is therefore +16 dBu. The “Input dBu FS” rotary. |! S' o& c" N
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine5 g' @: W" ]/ E" ?; o% B
Gain” potentiometer [3] increases the gain by 8 dB.- v4 U: |* E1 ]' t* ~( D
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.( `7 y! B) `/ c. c1 |: ?
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
* B* x3 m* |* q9 M6 P/ W# ~ have more body; percussive instruments are less aggressive.
+ j: r: M& D- O$ v7 G The group delay behaviour due to AC coupling of the stages is different in: i" J. I' P( h) L
tube amplifiers.
& w" n8 i" e. O The “Bass Warmth” control allows to select the frequency range+ S" a% ^& @ l N6 X
(10...200 Hz) within which the effect is active.
$ b; H2 N1 K# I: ?0 D$ x' ~% u4 b# X/ z[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
; V6 l! i: p0 I+ y7 K Valve amps have a characteristic response, mid-frequency harmonic content9 O. X8 C' m/ a1 ]3 ^% o
is emphasized.
0 N# E5 U7 K7 L[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.4 D( I) `, p: ]! @- P! T7 S
The harmonics spectrum of a delicately overloaded valve amplifier is completely+ o2 L% L" R3 g8 T; L$ f
different from an overloaded transistor stage. U0 M5 r$ i. B, ~% _/ ~
The “Gain” control adjusts a gentle overload while the odd-harmonics content
/ ~" v4 w" I2 f- Q* i2 p can be adjusted with the “Clip” control./ [! a! e7 C/ @% ]9 ?: |
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
# y) ?8 k/ [# b5 H4 w dBu FS.
+ ?; @6 O* X _9 A! \, A8 G6 e[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the; \ a1 H1 r# `- c- E
desired channel.
6 i: `! R+ I2 b7 q, ]2 g7 t The “VALVE” LED is on when the Valve Dignifier stage is active./ j' Z+ {% o& `1 C
[9] INSERT INSERT function.1 t* L v) P, d+ l9 Z
First key pressure: INSERT POST VALVE, the Insert Send is tapped after4 t8 w# q( D3 q C2 ~
the valve stage (display: “INS”); the Insert Return is directly fed to the Line: [" {) d8 G1 h3 `3 N8 r
and AES/EBU outputs.
. {7 U, L; }9 M5 U N8 {" D" L: \/ W Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
) S0 E! |5 H) f4 ^& w6 p2 e the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
# G. O; Y3 q! E the valve dignifier stage to the Line and AES/EBU outputs.
0 G- E1 s6 S+ `2 A9 S Third pressure: INSERT OFF, the input signal is fed via the valve dignifier% x4 a! X4 |% l$ {- O: v
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
y9 w% F( l! n; v0 R' M' c. B receives this signal; display: none).
8 X" ^ \! d$ f Insert Send and Insert Return are electronically balanced and equipped with" c# a3 T) F- Z. U; W8 p. E9 w/ H
XLR connectors.
! ^; A- a+ x. w4 W2 N[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or* s2 I* S+ M" _) I# o: O- y
ADAT digital interfaces. Each input channel can be switched to one of the
$ J& q" U5 m* U" @9 n8 C channels 1...8 of the multichannel interface. If desired, also a mono mix is- h( w5 H6 m7 _1 l. }$ X, `& h
possible by selecting the same output channel for both input channels.+ O$ r9 O3 w: }; ~- R% `; G
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone( [/ h' c+ D6 g/ c
channel.
. W/ T& B$ q9 \( j Can be operated only if the input gain selector is in Mic position. The9 c; {$ \8 f$ I" Q$ T+ H
setting remains stored when switching over to a line gain setting.
- ^) o9 n3 W! r6 U0 \1 I[12] Activates the high pass filter on the microphone inputs of the desired channel.
6 h l4 N W" v6 r Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
" Z; d, [: q% j4 G& b Can be operated only if the input gain selector is in Mic position. The+ j" j2 N ?! s9 B- r2 d( W
setting remains stored when switching over to a line gain setting.; i& X3 M1 b$ \
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.8 E# o% {: J2 V8 E; J
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
0 r' Q7 k# \1 ]0 ?! J" @ “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with7 ], F& S* N. E+ X* F5 |
Noise Shaping (display: “16NS”) can be selected.
3 R7 J" F, y3 B9 T/ j[15] SYNC Selects the synchronization source for the unit. Possible selections are:
/ O1 q6 ?- x/ ^5 Q3 ` INT 48 Internal quartz reference, 48 kHz
, u8 Q1 N6 i0 y3 t6 u" j INT 44 Internal quartz reference, 44.1 kHz* H/ G2 I( p. Y- M, g
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
0 A3 b1 o3 l& V4 x3 w n AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
+ Y, s. v U/ {2 ~& S6 r" n AUTO Selects sources automatically in the sequence AES-WCLK-INT
) M' G8 F$ v I7 e7 y, q. M" s VAR Indication only, active if the external source frequency deviates from 48 or
( j P Y5 N& J! a- E! I$ u 44.1 kHz for more than approx. ±3 %.
- _ C/ _/ X# I! A L[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
M& ^* z& l9 P7 d' ]2 W1 w either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
1 M+ g5 S) k5 G0 a' a l$ [- u[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce, B0 J3 g) B6 R$ V3 T9 u# p. t
the danger of overloading the A/D converter with short signal peaks (if0 S1 G$ P% J+ Z5 D: }" |; B( S
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,( ^6 w+ B( M+ x1 ~* V
allowing for approx. 6 dB reserve before hard clipping occurs% L) \ E$ M, V1 y# A( F1 Z4 G
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