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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 - _ ^! y' K% y( \' k, `
* |3 _) J2 ~4 j; V/ z+ N) Y; F英文电子说明书* [$ v! ^9 { j
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory: g) D4 ]2 G$ S1 V2 p9 j
default settings. The subsequent settings remain stored in a Flash EPROM6 v$ A# a, c+ n, _
after switching the unit off (unit contains no battery).0 n( s8 M I- G0 Q4 y: t0 Z/ d
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position# O) D8 e4 u8 U+ F, P7 `( ^
between microphone and line sensitivity setting ranges.
+ g6 c k5 T5 C( c Mic: Range –40...+20 dBu
- u9 v' f9 s4 D6 k. ?" S Line: Range +14 dBu, +24 dBu6 {3 A/ t. f6 F C* ^9 n$ \
[3] Fine Gain Potentiometer for fine input sensitivity setting. Q2 a) P' X$ B- k. ]
Range of additional gain: 0...+15 dB.2 u9 p" d2 |/ ]1 U7 D/ r C" R
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents7 Z0 A9 H: m, k! i; V) W* Q) U! t
the dBu value of an analog input signal which causes a full-scale output of0 A; a, l* w/ i" Q5 ~
the A/D converter.
0 L+ s. ^5 F5 ^% \) |# q Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;' S6 Z( M a% _- c, C
the peak level is therefore +16 dBu. The “Input dBu FS” rotary: v- J7 L" x7 |/ u8 D
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
* ~" t( l! _9 y- g Gain” potentiometer [3] increases the gain by 8 dB.* v# a7 R& j* K" i. A! h
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
# E `/ z5 K6 p( W[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
# I$ S5 l- t- L7 q) N% Q& P have more body; percussive instruments are less aggressive., P& f5 ~& ~4 [' i: W& H( M3 z
The group delay behaviour due to AC coupling of the stages is different in
1 {' | z( k+ ?$ R tube amplifiers.; W, K$ C" v5 l3 u9 v
The “Bass Warmth” control allows to select the frequency range
7 \, w7 T1 T8 ^' } V' n (10...200 Hz) within which the effect is active.7 c5 k0 x2 |' O* a( @4 P$ U! m
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
$ }" }: d8 s9 G Valve amps have a characteristic response, mid-frequency harmonic content, l* W, l- H. s+ W! g
is emphasized.- }* b, m/ K; K+ P5 m2 `
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
0 p7 r6 P3 J& D4 ^7 @ The harmonics spectrum of a delicately overloaded valve amplifier is completely
' i$ D$ P) ^& C/ Q. E different from an overloaded transistor stage.
# m! I5 u" F) y) P+ x9 ] The “Gain” control adjusts a gentle overload while the odd-harmonics content/ C- ^$ t+ _4 ?- Y4 X2 g; v
can be adjusted with the “Clip” control." X9 x$ l" R$ ^( P( W
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
3 F+ z& s8 Q% e! j' @ U3 h2 K+ U dBu FS.
9 e1 o3 P2 D3 Q$ A4 ^[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
, H" T; n: |# m7 a# F desired channel.4 W/ O9 v" t% d' ^
The “VALVE” LED is on when the Valve Dignifier stage is active.
# {* ~4 V9 h7 Y' z* j; ]) M! T" o[9] INSERT INSERT function.; m5 Z: {. w1 b! g$ a. ?8 ^" X
First key pressure: INSERT POST VALVE, the Insert Send is tapped after- G1 x9 x W" p) k
the valve stage (display: “INS”); the Insert Return is directly fed to the Line* \5 ]' K9 l. e" ^, w2 s# @4 o
and AES/EBU outputs.
& M/ |6 {, r- _' M# [$ S6 e Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before7 k6 [# e- o' J2 c: }( ~% H5 Z
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
1 F E# s. I; R1 q) Y9 D; M the valve dignifier stage to the Line and AES/EBU outputs.
, m |# c) P& F W Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
2 M+ K: P/ H" \' F4 c stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
3 D$ v/ M% H* Z5 @0 o receives this signal; display: none).
' f$ l& s* u7 c$ S% v Insert Send and Insert Return are electronically balanced and equipped with
- T# c4 Y% J4 u3 a XLR connectors.
4 V( a5 ]) w1 B! o[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
1 H/ A1 u# E! S; p% \9 r' ^ ADAT digital interfaces. Each input channel can be switched to one of the, U# C( p- _; ^" Y3 w: a0 s
channels 1...8 of the multichannel interface. If desired, also a mono mix is; Z* n* C* r1 s( Q
possible by selecting the same output channel for both input channels.
+ {( f$ _+ _) X( I7 j# t4 O S/ Y[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone2 _- I/ M" X/ {
channel.0 U) V5 a5 B( W6 A$ U7 U
Can be operated only if the input gain selector is in Mic position. The
0 l/ \7 |& x6 C0 Y- t! O setting remains stored when switching over to a line gain setting.3 [, o$ B% I+ w8 T
[12] Activates the high pass filter on the microphone inputs of the desired channel.4 p2 j: K2 ?8 V" Q5 ]; J
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
, T8 U) Z5 {! F+ l8 D Can be operated only if the input gain selector is in Mic position. The7 Q8 n8 k7 m* L+ N. _
setting remains stored when switching over to a line gain setting." O- k5 k1 x5 O0 w9 d
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.# E9 x9 i$ W" F n% D$ B: f
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:8 s$ \& I5 K- X2 k
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
! k2 }) q* Z s Noise Shaping (display: “16NS”) can be selected.) w7 A! k7 t9 Q/ G( \2 m/ w. a
[15] SYNC Selects the synchronization source for the unit. Possible selections are:+ R9 T# \ q, n: p* W# R3 l
INT 48 Internal quartz reference, 48 kHz S" i- k* ]6 _3 n
INT 44 Internal quartz reference, 44.1 kHz! ~' |( C& l( W8 P1 O
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
/ j% B+ z, {1 A4 @ AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)4 Q1 r2 M& h& Z4 h# v, c5 T
AUTO Selects sources automatically in the sequence AES-WCLK-INT
Z5 |7 N; R* G! V; f, C VAR Indication only, active if the external source frequency deviates from 48 or
; e" W, c. B9 ?/ j7 M8 U 44.1 kHz for more than approx. ±3 %.* b9 J. {) S! ?$ `
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters – T4 ]' r. w! Q( E. F
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
* A8 _) d0 G2 @[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce1 z% O; x$ z+ r9 i7 v7 u2 c+ U$ ^8 A
the danger of overloading the A/D converter with short signal peaks (if
2 G2 V. \0 S3 y' h5 J active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
9 e; D9 v# H5 i5 y allowing for approx. 6 dB reserve before hard clipping occurs) Z9 a' {: L9 j9 Q$ h0 y
+ N9 [% b3 X x6 H# V- t( K7 ?
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