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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
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英文电子说明书& I2 \9 [" C& N
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory4 G! h* c: l6 u8 U+ I
default settings. The subsequent settings remain stored in a Flash EPROM$ z' {2 c2 a: h; U+ ] m
after switching the unit off (unit contains no battery).7 ]# E: k, z- E, e* r
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
7 Y$ P$ r; v, m& C& } between microphone and line sensitivity setting ranges.6 b. c: ?9 z7 P0 t
Mic: Range –40...+20 dBu
. F1 }, x% d9 s8 u% A* U Line: Range +14 dBu, +24 dBu0 m" i. f( L- X. S0 W
[3] Fine Gain Potentiometer for fine input sensitivity setting.
. k1 c6 t% s0 `. k Range of additional gain: 0...+15 dB.
. p6 D. Y3 P. i. q" i5 e Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents: T$ s# d. A K
the dBu value of an analog input signal which causes a full-scale output of
- W" d+ x% A. O* t& c3 e the A/D converter.
" } V5 Y/ |+ l Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;4 B! ^ i' y$ ~/ i0 L5 ~6 W/ C, [
the peak level is therefore +16 dBu. The “Input dBu FS” rotary' Z% c& x: n2 B9 i; A0 \) ]0 T
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
) |1 e$ M) o/ h. i9 S Gain” potentiometer [3] increases the gain by 8 dB.; p# @4 y* p: i3 g+ T# U4 F. y$ v
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.; i0 y2 k+ N: X
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
0 ~$ F, ^6 K* f+ J3 G1 e& A4 L3 P have more body; percussive instruments are less aggressive.1 ?$ \# e! X- c
The group delay behaviour due to AC coupling of the stages is different in
: D8 W" J1 B( F* ~' E tube amplifiers.# V; T- N I5 m" Y
The “Bass Warmth” control allows to select the frequency range8 D$ e% C# w" }+ c+ F& a
(10...200 Hz) within which the effect is active.1 ?; @( \- }/ ?
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
( p1 Y0 Z. k2 r3 w/ C Y Valve amps have a characteristic response, mid-frequency harmonic content& c0 c; W8 T: S7 K
is emphasized.
7 g8 s$ X* W, r6 J1 S[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.$ {* A9 L0 Q) ~
The harmonics spectrum of a delicately overloaded valve amplifier is completely) q* \# K7 }7 j# @ x& V) c! d" u) E3 ^
different from an overloaded transistor stage.
5 K7 f3 h, W! H9 c8 u. t0 A2 e The “Gain” control adjusts a gentle overload while the odd-harmonics content/ j* @ y/ U2 Q) ?7 E& K
can be adjusted with the “Clip” control.7 O1 c/ P1 c1 h! v( a
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...249 u) i& d4 f' g6 H. [1 C
dBu FS.
& u3 c2 T* t2 b9 H- d[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the! V, V. K3 G" E) m' S6 g, F
desired channel.
) k, Q# V% ~! {8 I; s The “VALVE” LED is on when the Valve Dignifier stage is active.
8 \4 `; C% O: z, A1 A[9] INSERT INSERT function.
9 n6 _' \& J9 ?) E' { First key pressure: INSERT POST VALVE, the Insert Send is tapped after. x9 I- F1 Z- s: U* D
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
" S" Z$ y$ d$ F and AES/EBU outputs., c, ~6 T s0 r* y
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before# M5 l0 o0 F3 x* d0 X
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via8 n6 v$ O, U7 F$ D$ Q
the valve dignifier stage to the Line and AES/EBU outputs.
3 y, }0 y: D. X# M Third pressure: INSERT OFF, the input signal is fed via the valve dignifier/ r" v! n( _5 H3 K6 ^
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
' v4 z" w' Q! [* m1 t r6 I6 Q receives this signal; display: none).
U* i- v1 v- p# w Insert Send and Insert Return are electronically balanced and equipped with
9 @/ u& c1 [1 `! h5 {' D5 ]7 M XLR connectors.
* ^/ f( D# g7 P6 D8 @[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or ~$ F2 M9 R& f# \! g
ADAT digital interfaces. Each input channel can be switched to one of the
0 g; v, i- p; R9 I$ t channels 1...8 of the multichannel interface. If desired, also a mono mix is
) m- [2 n+ |5 U8 C8 t$ d- t! { possible by selecting the same output channel for both input channels." Y2 s3 f; s% M. @" Y
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
; _) l0 O( e" o; J, R channel.
3 @; m2 ^3 |; f, D6 r Can be operated only if the input gain selector is in Mic position. The
/ s3 G% c: \/ C6 Q2 T setting remains stored when switching over to a line gain setting.* a/ u! \/ m* K6 C" J5 Y: X0 ~6 b
[12] Activates the high pass filter on the microphone inputs of the desired channel.
$ l* g( a5 [4 S+ r) a Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.8 |7 y4 G' A5 a% X% i
Can be operated only if the input gain selector is in Mic position. The
) F! y5 @6 T6 D6 X1 X, y setting remains stored when switching over to a line gain setting.& p' }3 C0 g+ ~$ Q
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
: K$ f, Y1 |6 L$ A[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:. W8 m5 i! `, z! b$ {, i
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
( T% Z# J3 j, J/ n/ u6 t* o Noise Shaping (display: “16NS”) can be selected.8 h& i) k1 Y* q$ L
[15] SYNC Selects the synchronization source for the unit. Possible selections are:; U6 I. K0 x1 C- A# j+ A
INT 48 Internal quartz reference, 48 kHz/ E5 G3 e7 P8 g# V0 r7 x3 r0 z
INT 44 Internal quartz reference, 44.1 kHz
& u1 s* G& x* r/ A1 O! x8 E WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)! D" ]* i' x8 @9 Y
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
6 j$ [6 x8 W1 C2 e+ o; p AUTO Selects sources automatically in the sequence AES-WCLK-INT
3 Y4 n6 b( h' c+ x& }( C VAR Indication only, active if the external source frequency deviates from 48 or
4 f$ w/ l) ], G" h 44.1 kHz for more than approx. ±3 %.
% e1 I9 _) U/ d* a$ @[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
; T5 ~- \% e6 l1 b$ C4 T either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
9 Q9 S% R7 d: {2 J2 G: z* {- i[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
: l( C/ I0 D7 K; [9 h* K the danger of overloading the A/D converter with short signal peaks (if7 y/ h6 G0 h. E. U3 Q7 f5 p7 d
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
/ i& V6 A0 V( W4 ]+ a allowing for approx. 6 dB reserve before hard clipping occurs
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