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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 M( Z. c* q% v
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory2 Z6 o; i' x5 }' F! u
default settings. The subsequent settings remain stored in a Flash EPROM
: j- S" F( V% ?+ y1 I. M& [$ r after switching the unit off (unit contains no battery).5 Z# t; s( C: K
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
1 V% o) D, j- K! d between microphone and line sensitivity setting ranges.
/ c0 F h9 G2 O5 j Mic: Range –40...+20 dBu2 ?$ F2 ?7 }, u" @, \2 e$ p
Line: Range +14 dBu, +24 dBu
7 l1 H: O* z+ q( D[3] Fine Gain Potentiometer for fine input sensitivity setting.
N2 S1 M7 C4 _* Z7 Y5 e4 g Range of additional gain: 0...+15 dB.. I9 h3 k! x7 r% M
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
4 }0 j* E! `4 R6 G9 T the dBu value of an analog input signal which causes a full-scale output of
+ o2 }: v2 a& o7 i% U the A/D converter.; d) `. s( M& c7 T6 w1 q; z
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;: Q G, W. M& V3 R
the peak level is therefore +16 dBu. The “Input dBu FS” rotary1 o7 G) R/ x7 N
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine u1 g- j3 t: b' Z! Q# o. K
Gain” potentiometer [3] increases the gain by 8 dB.
2 R0 @# q- P- ~; w[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.4 h! {% L6 |, |9 b5 k4 A% _9 j/ T# j
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals: V4 E9 t) N/ T& U1 X# q
have more body; percussive instruments are less aggressive.
0 G' |# U7 {& w/ @3 x& d/ t The group delay behaviour due to AC coupling of the stages is different in2 Y+ f& {1 v* H; c5 W
tube amplifiers.
/ A- E( T1 E: f% X The “Bass Warmth” control allows to select the frequency range7 P# G8 S4 O1 {4 a: @
(10...200 Hz) within which the effect is active.
/ F. {1 ?' ^! K' k6 d$ D[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
' Y2 u0 \. x) c. w" z Valve amps have a characteristic response, mid-frequency harmonic content- X; @" S8 e" A( X: F+ }
is emphasized.
4 l7 G$ B9 c' l3 _# _" l[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.) L D$ i0 a! l# n x3 G2 C
The harmonics spectrum of a delicately overloaded valve amplifier is completely
0 o4 i- a8 f& x: e, _ different from an overloaded transistor stage.) k7 o! I4 K4 w+ b7 L/ U
The “Gain” control adjusts a gentle overload while the odd-harmonics content
+ I* _# |- G& @3 y ^# o7 y can be adjusted with the “Clip” control.
: F' b7 G: F( C5 i4 q[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
- `! K3 d3 o) \0 [# l dBu FS.
5 K$ {& I+ b" k& D6 {( H[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the y! P+ ^9 J$ D+ b, L& _, d8 A; E# B/ u
desired channel.
8 E9 R$ I4 K; I) F9 Y The “VALVE” LED is on when the Valve Dignifier stage is active.% L$ _. C4 i" |/ R5 c- V
[9] INSERT INSERT function.
- @+ l* n/ [- o5 T, ]; U* A9 g First key pressure: INSERT POST VALVE, the Insert Send is tapped after+ M1 P M/ ^( _8 q- Y. S; `
the valve stage (display: “INS”); the Insert Return is directly fed to the Line9 I% Y+ [# Q/ r
and AES/EBU outputs.
6 l, u% f6 |' `6 }5 {4 F Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before0 z* R- F/ U5 S6 J; e8 W
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via: ?. ^+ W U, l) x& ]: E5 J9 J
the valve dignifier stage to the Line and AES/EBU outputs.2 q& Y5 Y* o' ~' {; x* r( Y
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
* _8 S5 n( m- H1 i& q: d* k stage (if active) to the Line and AES/EBU outputs (also the Insert Send output! |8 _5 D2 G9 i# o
receives this signal; display: none).! o3 h! s+ g$ O
Insert Send and Insert Return are electronically balanced and equipped with# ^* ~, _. i9 b' ^
XLR connectors.
* @/ W% X$ h L: d2 j[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
6 r, h0 @. ^& I5 x7 s6 g% J ADAT digital interfaces. Each input channel can be switched to one of the
6 h7 ]" U- }, f7 ^8 H% h0 X" r channels 1...8 of the multichannel interface. If desired, also a mono mix is
, f+ A+ j2 [" {: N possible by selecting the same output channel for both input channels.6 l* d( e4 a- j, M
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone" V0 v9 x5 J, a' L5 E; F# |" [ s
channel.3 j2 y6 y% @* C. y4 f4 }+ f
Can be operated only if the input gain selector is in Mic position. The
8 i' |: g' [0 k9 t' H* P8 W" O+ z3 x5 k setting remains stored when switching over to a line gain setting.
5 K- y3 J3 @) m. R3 `4 t6 u$ E[12] Activates the high pass filter on the microphone inputs of the desired channel.+ f1 L4 {' N" `8 [9 z
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.8 P S% k2 \" R, I
Can be operated only if the input gain selector is in Mic position. The6 z$ X2 l9 Y+ ?9 M. g I& E7 m2 e, T7 P
setting remains stored when switching over to a line gain setting.2 S `, I1 f3 {3 f
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
( Y. O! H; O# H% [[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
- }2 d1 Y$ E0 ] |; K5 r! X “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with, X8 Q# t( ~' O" G* t4 ^% K0 o
Noise Shaping (display: “16NS”) can be selected.
) @' E* C. G8 f9 w2 s4 K! Z[15] SYNC Selects the synchronization source for the unit. Possible selections are:
& g( m5 e( w6 H6 a INT 48 Internal quartz reference, 48 kHz$ F' |; u9 D9 a8 R/ J
INT 44 Internal quartz reference, 44.1 kHz
7 s6 y* s" ]' Q" t WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)* v# C7 y' P# K/ z5 S. I- `1 ^$ s& n( m
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)9 W! u( L4 t. ~1 i8 }- `. e
AUTO Selects sources automatically in the sequence AES-WCLK-INT
2 R0 L/ |( n1 P VAR Indication only, active if the external source frequency deviates from 48 or
4 E/ k+ ^. ?$ b$ Q. S 44.1 kHz for more than approx. ±3 %.1 L: h9 k9 f+ l; N( b$ s! S
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
4 T% b7 a: f) u; n; G: ? either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
, o9 M0 g0 C6 ][17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
: B, L- m0 W2 S the danger of overloading the A/D converter with short signal peaks (if3 A/ ~* S4 y4 M, K5 ~/ X
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
- S8 o5 v2 k8 p allowing for approx. 6 dB reserve before hard clipping occurs# J5 `1 q7 p4 I; F$ R" T
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