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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 $ H' V# l" z* c( V" [1 @
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英文电子说明书$ e# K: ]. {1 }8 F9 f
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
/ y: i1 I2 N1 y8 W( w8 N4 M5 P default settings. The subsequent settings remain stored in a Flash EPROM4 t$ ~* ? h! \/ _& n" o% O
after switching the unit off (unit contains no battery).5 X j5 X5 n6 ^/ g% c1 O
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
) t. y8 U4 n' P8 @6 I: ~7 ^/ q between microphone and line sensitivity setting ranges.) c# `0 v8 n" S
Mic: Range –40...+20 dBu
, i/ |/ d; W. A4 I$ f! G* V- ~* i, g Line: Range +14 dBu, +24 dBu
& y+ ]2 H, X2 B! f, s' l( y. d- F[3] Fine Gain Potentiometer for fine input sensitivity setting.
" |- o5 c- S6 r, \% v Range of additional gain: 0...+15 dB.
" r6 K4 {# t6 P1 M @ p Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents4 N) C: k' F8 F! A3 @
the dBu value of an analog input signal which causes a full-scale output of
& `8 q! G' D* x the A/D converter.2 r. x( z% u/ l8 ~7 s0 Z1 u
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
% x' k' _5 }6 O; T" @ the peak level is therefore +16 dBu. The “Input dBu FS” rotary
1 N4 I. f1 L3 A3 L switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine6 L4 p, g Y/ C! I8 o9 w! b$ o) a& o
Gain” potentiometer [3] increases the gain by 8 dB.- N$ J4 s$ {6 V6 K9 V5 W
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
3 i' n: c; P8 m( R* P[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals: R0 z5 [) N5 G6 t! o$ T
have more body; percussive instruments are less aggressive.+ E* r$ H4 [! E4 Z$ w: Z! M
The group delay behaviour due to AC coupling of the stages is different in: }* ~+ R+ ~& `5 Q
tube amplifiers.' X$ x: r, D9 B, [2 [ o% J
The “Bass Warmth” control allows to select the frequency range5 L, J1 i/ t5 |
(10...200 Hz) within which the effect is active.. I7 q( n0 d& l& E! e
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
1 f1 }7 X/ U7 D3 ^. }6 T Valve amps have a characteristic response, mid-frequency harmonic content+ _& p* u0 p. ]6 d u2 w
is emphasized.
0 e L4 U% g) x% j[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
; X2 x! d/ V3 S$ U0 A7 T" v! }' U The harmonics spectrum of a delicately overloaded valve amplifier is completely" F( }0 I: ]8 Y
different from an overloaded transistor stage.6 K- n7 \* S7 e. Q% D8 B- |
The “Gain” control adjusts a gentle overload while the odd-harmonics content
O0 e6 J* s4 b5 Y9 ?+ b- F6 R can be adjusted with the “Clip” control.3 T0 O8 u+ Q8 e9 _% ^2 i
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24: z6 n W) e/ A- i p* q7 d
dBu FS.
. N4 \$ k) w, x; t[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
( Y1 ?4 t( w; x4 u: R desired channel.8 R6 [& K7 S7 j8 O
The “VALVE” LED is on when the Valve Dignifier stage is active.
: t. L% }- p. [, S[9] INSERT INSERT function.
# I: ^ j9 Z0 ^ v, Q First key pressure: INSERT POST VALVE, the Insert Send is tapped after1 p- i; u2 U a6 I) s
the valve stage (display: “INS”); the Insert Return is directly fed to the Line `( p/ c' I# N$ `7 a m1 n
and AES/EBU outputs., ]% t, k0 y3 V9 l* `
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before. H3 t% X" I" G+ F/ o
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
1 E; d5 i0 @3 l( n" Y, c% Z3 n% _; ~ the valve dignifier stage to the Line and AES/EBU outputs.
* m* Q7 |* z8 F Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
7 m# q+ ^/ F: {( Q' B stage (if active) to the Line and AES/EBU outputs (also the Insert Send output7 H8 I8 j+ v$ L5 a" _' |: F( g
receives this signal; display: none).* I9 u4 t% c% b) i/ y* ?
Insert Send and Insert Return are electronically balanced and equipped with
K5 t4 f7 v) ~# C: ]- t' p) t$ w* n XLR connectors.# y9 G7 U, t0 _- `
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or9 r3 ^' e, L' G) d
ADAT digital interfaces. Each input channel can be switched to one of the% R6 A. {! f' y/ m2 i
channels 1...8 of the multichannel interface. If desired, also a mono mix is# H9 P7 w+ m6 c
possible by selecting the same output channel for both input channels.
% o0 [7 @, H: o3 C8 L- r[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone. l' T( P$ m0 D2 \
channel.
. ?# j8 w* j# a Can be operated only if the input gain selector is in Mic position. The
% h) i. b1 G* r1 X' s0 u% C setting remains stored when switching over to a line gain setting.
`8 M. J4 w1 I. `" s[12] Activates the high pass filter on the microphone inputs of the desired channel.. j$ A! ~8 `9 M
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.% x. @7 t6 X1 Z& v
Can be operated only if the input gain selector is in Mic position. The& e- D% ?, j m4 z- ]
setting remains stored when switching over to a line gain setting.
5 u* l( R, |$ K( P, I. [5 b* o[13] Ø Toggle key to activate the phase reverse switch of the desired channel.3 y! Y% ^" {/ I- D/ h
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
: ]6 {& D0 Q% k4 |- }1 K7 |/ _ “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
3 b8 S7 ?" h/ z: U Noise Shaping (display: “16NS”) can be selected.( R/ O7 ~$ t8 J" B, s. E0 X' P
[15] SYNC Selects the synchronization source for the unit. Possible selections are:
- m$ M, s7 D' j* B2 a INT 48 Internal quartz reference, 48 kHz7 @0 O3 a" C; Z( Q/ F; e
INT 44 Internal quartz reference, 44.1 kHz# I; ^! c3 R4 l
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
) U' p8 ?% z( `6 S) j AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
, G. j# j8 f5 \/ a9 C' v AUTO Selects sources automatically in the sequence AES-WCLK-INT
$ u9 E* S# P+ z' ]+ o9 d. w VAR Indication only, active if the external source frequency deviates from 48 or
* j- n1 d6 ]+ i# K2 Y 44.1 kHz for more than approx. ±3 %.: w9 p( d1 x" Z1 p) _6 q& w# p# y
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –7 ?4 G$ S# ~; N+ b' a, i- l, t! q
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.- V: N/ ~3 A$ O6 |% U( M
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce. ~9 c: F) o8 u
the danger of overloading the A/D converter with short signal peaks (if
* Y* }7 S6 ^) A# x W active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,6 k# q/ n' |# y9 M; t' T
allowing for approx. 6 dB reserve before hard clipping occurs5 u! `7 m; Q$ ]/ t) x
# {5 i8 n. S, N2 L" h4 L
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