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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 T) L6 [! L+ m/ N g0 x: }" m7 T
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
# S% t% A+ D8 ], x default settings. The subsequent settings remain stored in a Flash EPROM
: k$ G: [% s4 Y; N after switching the unit off (unit contains no battery).
: c1 C" `, l/ O7 T0 r5 U[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position+ d$ }. o. C% w y% {& T6 x
between microphone and line sensitivity setting ranges.
( D5 m) \' e5 [0 H+ m# _. _6 z7 @: `6 _ Mic: Range –40...+20 dBu8 |2 K ^+ b! f/ r/ [' b9 F1 P
Line: Range +14 dBu, +24 dBu/ B0 ~9 F/ N8 |9 h9 {
[3] Fine Gain Potentiometer for fine input sensitivity setting.
) S! q7 D" z" U% E Range of additional gain: 0...+15 dB.
0 Y) Y) k4 q" Y5 n$ D Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents; I2 a; T9 [0 Q0 u- D* j9 |
the dBu value of an analog input signal which causes a full-scale output of
6 I/ D$ o+ a- O# T5 C the A/D converter.- t0 G* h: i1 L5 \, e' S1 |7 _3 Q
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;5 p2 W$ q" i1 d
the peak level is therefore +16 dBu. The “Input dBu FS” rotary% E% Z1 F c! P- o
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine1 R* q0 u( G6 O8 P5 K9 U
Gain” potentiometer [3] increases the gain by 8 dB.
& a1 O+ W3 ?+ w- E[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active./ @/ m3 k! d' K' w2 Q
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals9 B6 E6 L3 e) `7 c7 D2 @
have more body; percussive instruments are less aggressive.
& h- u& d. @, S1 ^ The group delay behaviour due to AC coupling of the stages is different in
1 u i6 P1 f( S: p4 @8 O tube amplifiers.
. q/ X6 U, h! M. T; d: i9 _* D The “Bass Warmth” control allows to select the frequency range4 \% N# F! R" n" F5 Y
(10...200 Hz) within which the effect is active.% R/ K, C7 [. U) K4 u# H+ w
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
) |5 X, a" H5 q6 X X Valve amps have a characteristic response, mid-frequency harmonic content$ n" @3 c' w! |! ]
is emphasized.
' b! |. q# i9 f) c[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
3 m4 ~' Z; y% m/ t8 ~ The harmonics spectrum of a delicately overloaded valve amplifier is completely
# X4 ~; Z0 Z. }+ X different from an overloaded transistor stage.
1 P& `0 O7 b5 [. L The “Gain” control adjusts a gentle overload while the odd-harmonics content6 C) n6 n1 U; q( S4 Z
can be adjusted with the “Clip” control." [: z5 ]0 `9 d# I5 ~: e# M5 w
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24$ [/ g r, H1 j0 K$ V0 z9 |
dBu FS.5 F# H; O( L0 B) F
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the2 p2 G5 ^1 t ^
desired channel.% ?$ B9 r2 G3 V k( ~/ r5 C ?0 O; |
The “VALVE” LED is on when the Valve Dignifier stage is active.' f4 w5 m9 ^; L: [
[9] INSERT INSERT function.
) \5 b% ]7 |5 n$ W+ i+ Z" H First key pressure: INSERT POST VALVE, the Insert Send is tapped after
) t+ I2 G, N8 m. c' ?' `- ` the valve stage (display: “INS”); the Insert Return is directly fed to the Line2 e& H) Y4 f$ A) ?- {
and AES/EBU outputs. r$ h/ H: s8 j3 Z9 N% i2 W( F3 H
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
( C( e; k! y4 ~) Z F z+ p the valve stage (display: “INS” and “PRE”); the Insert Return is fed via' z& S; v) N. r g1 R8 k
the valve dignifier stage to the Line and AES/EBU outputs.: p9 \5 C. T% m& v/ I9 H
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier @, F8 r5 z2 f5 C
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output. v2 ]! p0 C. U7 Z9 F
receives this signal; display: none). ^' [* e4 F% p& N+ C2 U; L, f
Insert Send and Insert Return are electronically balanced and equipped with; p y6 ?& u8 Q6 a
XLR connectors. _0 d# h3 c X: T% M! ^
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or& i: n+ k/ z9 f, A
ADAT digital interfaces. Each input channel can be switched to one of the
9 |/ J3 b) n& U channels 1...8 of the multichannel interface. If desired, also a mono mix is& N9 O$ l( g$ [. c9 j' @* m( d
possible by selecting the same output channel for both input channels.
4 `0 ~7 q7 r8 M& Y[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, l/ r% y1 q& P# R* Y* c0 S0 Q channel., s) {: N+ {& |" K5 h
Can be operated only if the input gain selector is in Mic position. The8 ]$ b5 q, B* Z# d% Q0 @8 m
setting remains stored when switching over to a line gain setting.
3 C! B$ O" X c. G[12] Activates the high pass filter on the microphone inputs of the desired channel.
/ n2 r8 Y' s. b7 p Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.1 M8 X6 s* s$ }" m; N
Can be operated only if the input gain selector is in Mic position. The
# s9 U, J" J2 c% C& O+ {* b7 E setting remains stored when switching over to a line gain setting.. q9 x( {! E( ?1 _
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.) P! I/ M* d, k- \5 ^* R
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
0 |& R2 ~7 |4 Q/ ?2 J5 E: n “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with& {3 y+ V. w8 `8 J, W' ~
Noise Shaping (display: “16NS”) can be selected.# l. g' h. L( } v5 I
[15] SYNC Selects the synchronization source for the unit. Possible selections are:/ H& H- y, j/ h
INT 48 Internal quartz reference, 48 kHz2 h) q! S& W% T( {5 x
INT 44 Internal quartz reference, 44.1 kHz2 o# E' j3 c7 h) Z) R# d
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
& v1 K' q6 X- Q# [& f E AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)- T- b6 s6 M' s, L5 G
AUTO Selects sources automatically in the sequence AES-WCLK-INT0 J/ T7 n( m s+ z( t& R& |
VAR Indication only, active if the external source frequency deviates from 48 or. M6 _) p5 ~9 N: Q$ L5 u
44.1 kHz for more than approx. ±3 %.- u; G; r( ]2 Z+ k4 O, Q8 G- w
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
, k% \9 ^' N" ^" D' G either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
1 u# f% S) Y5 g[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce' O7 M5 A' i- O3 a) ?
the danger of overloading the A/D converter with short signal peaks (if. ~; G3 x# [8 X: d4 |
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale, P9 }$ ]- N# j$ f- W1 }
allowing for approx. 6 dB reserve before hard clipping occurs) Y- h* A/ C, g* @, C
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