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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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英文电子说明书6 R6 {, U' H! U% N- W
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
+ o" g5 J4 e+ y' v9 }. D0 |$ Y default settings. The subsequent settings remain stored in a Flash EPROM
1 |% U8 R8 `9 l) R* y) O after switching the unit off (unit contains no battery).; R' N8 G0 q% E* m% |7 T+ e& d
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position% v* K; U" G1 ^& U. y
between microphone and line sensitivity setting ranges.; m3 |' s0 v2 h( U" h
Mic: Range –40...+20 dBu# L9 F& y6 [5 H- G1 B; e0 W
Line: Range +14 dBu, +24 dBu2 m; r& g- X) P; f! I7 v5 n' [
[3] Fine Gain Potentiometer for fine input sensitivity setting.
+ f# W8 x# o1 H Range of additional gain: 0...+15 dB.6 M0 D6 u: s% l7 c2 `
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents0 H) ]' q: Y; D2 A. E( O/ y
the dBu value of an analog input signal which causes a full-scale output of; M- h& X! `$ }% ^) W4 Q; x" U2 ?4 P" I
the A/D converter.' F6 c# J; ~+ r! E
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;% E# w: Y; E5 u- Q
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
+ }& N7 M. T2 `; L2 |) Y5 s switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine% Z5 O+ I( D6 m5 \ ^
Gain” potentiometer [3] increases the gain by 8 dB.
% I) \3 c! l/ X: ?% h! ^, m6 N) R[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
: ^' I9 g( Q% q+ C[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals1 n; B& ?, c- |. O" h+ E ]7 y
have more body; percussive instruments are less aggressive.6 m+ ]+ y5 T4 R& f# P0 _; S
The group delay behaviour due to AC coupling of the stages is different in- @# l L. D$ N' \+ s/ z, B: B
tube amplifiers.
9 [8 Y0 M* s' n6 g/ f4 o The “Bass Warmth” control allows to select the frequency range5 _4 j S0 h, S. Q: ]
(10...200 Hz) within which the effect is active.
* P7 M& ~! S& {# _; {& b3 ][5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.- M8 g, e0 }& v: O' ?! T
Valve amps have a characteristic response, mid-frequency harmonic content6 }4 Q/ t M- b8 U3 v
is emphasized.
1 m8 N4 c) d& e" V1 T. r b[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
8 C5 Y) Z6 ?+ }, x3 h* D& H6 w The harmonics spectrum of a delicately overloaded valve amplifier is completely+ U$ P: g2 f4 A/ j+ _$ Z* r
different from an overloaded transistor stage., T; C' C: s2 R9 g3 ?! q
The “Gain” control adjusts a gentle overload while the odd-harmonics content- z# \+ E) O+ e; I3 s5 ]# _) b
can be adjusted with the “Clip” control.# c9 J& J6 d0 s: ^8 W
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24* f" H- j) E9 {1 l# d7 C+ f4 P8 a. J% `
dBu FS.
, p( H/ A- V$ }; |5 [[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
0 j* K8 g# u$ B9 Y( D* Q9 n desired channel.
1 W4 d0 A4 x; Y The “VALVE” LED is on when the Valve Dignifier stage is active." n2 O- X1 }$ ^+ E
[9] INSERT INSERT function.
/ Q. s' l- v; H% L! P5 J First key pressure: INSERT POST VALVE, the Insert Send is tapped after+ J- n5 a0 `1 r1 V) Z6 a
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
% k! Y1 O% p3 f8 U9 X; A3 a- E and AES/EBU outputs.
7 [7 o3 [4 j7 H; o q Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before/ d/ y+ z* [( X7 |
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
, f: t" ~* i' m' S. f% b. P4 g the valve dignifier stage to the Line and AES/EBU outputs.& N" x; W6 g4 \ |
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier3 f8 n$ a2 ~7 ~+ d6 V$ d; S( r
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output/ u) B6 B4 {' }5 }+ y- V" ]. c
receives this signal; display: none).
* { n) U6 l8 @+ N; a8 [7 f+ D( N Insert Send and Insert Return are electronically balanced and equipped with
( Y& U6 W K( `, N0 P- }7 E2 J+ x XLR connectors." G, R6 H$ s3 D N7 U( P) b
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
1 L3 S6 |0 E( E! ~1 S4 Z# C ADAT digital interfaces. Each input channel can be switched to one of the
7 I, R6 j b, | channels 1...8 of the multichannel interface. If desired, also a mono mix is2 f/ d5 I, S2 z: `; p) b, z# m
possible by selecting the same output channel for both input channels.! F3 r) F6 b+ T X$ O3 ~
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
' U2 ]0 t* T# n: g channel.
" _% ^/ X9 x5 b' ] Can be operated only if the input gain selector is in Mic position. The
! x: U+ g, `7 T" b setting remains stored when switching over to a line gain setting.
( @9 a; K6 v1 J5 }- D. {: y8 Z[12] Activates the high pass filter on the microphone inputs of the desired channel.# b9 o" P& I) s6 ~+ Y5 \( L
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
) F2 H2 x! v/ t3 j& p+ c Can be operated only if the input gain selector is in Mic position. The
" z+ ]) T, B2 p' I; `5 }# P1 s7 R setting remains stored when switching over to a line gain setting.6 P" N( a1 h# |" m& J) O
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
8 F' a# o6 K4 V2 t5 P2 X[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
$ L2 y, T) a, ~3 |# B “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
. j6 }: L# l' A! O: ^ Noise Shaping (display: “16NS”) can be selected.
U0 ]) O( p$ _[15] SYNC Selects the synchronization source for the unit. Possible selections are:
0 J( e* [/ w' A+ K INT 48 Internal quartz reference, 48 kHz! {' |+ r8 o7 K3 ?! I! J
INT 44 Internal quartz reference, 44.1 kHz
0 L) d2 O/ c/ N2 M1 D E4 h WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
1 K* p1 S( [5 B% [3 Q AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
, S6 A8 a& x- i1 e AUTO Selects sources automatically in the sequence AES-WCLK-INT
% \* Z: A! T, W: P VAR Indication only, active if the external source frequency deviates from 48 or4 C) w% s% ]: x" U p
44.1 kHz for more than approx. ±3 %.
0 W" a: K5 Q' Y0 T- z[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –9 \3 x8 v3 a5 }" Q' N! g
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.2 d% H5 V! E( ~) k5 [( c; k
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce) \1 W5 A: p# M& R
the danger of overloading the A/D converter with short signal peaks (if
2 D2 I7 l2 e, s8 } active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
/ z4 f1 M6 s' ]' M" |: _% ` allowing for approx. 6 dB reserve before hard clipping occurs3 }1 |. t8 V+ B$ F
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