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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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" k# g" k' q- I4 _( e) ~& R _英文电子说明书8 N0 \( N8 S. k/ w
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
' @8 O/ t, Y: T default settings. The subsequent settings remain stored in a Flash EPROM( r/ g; T7 H% L% F. x7 Y
after switching the unit off (unit contains no battery).
4 c* |4 f, ]) b/ |0 V[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position; B! y/ j' q1 b
between microphone and line sensitivity setting ranges.7 z2 _" n8 J+ e( S
Mic: Range –40...+20 dBu
& g) Q' Y2 U- s$ {) Q Line: Range +14 dBu, +24 dBu" w) y; X# Q' C- {3 }9 N1 Q
[3] Fine Gain Potentiometer for fine input sensitivity setting.
, J1 y( ^" P' c Range of additional gain: 0...+15 dB.
; Y& V5 b$ N H* H6 Y$ \ Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents9 D a( w3 ^( U( x1 j
the dBu value of an analog input signal which causes a full-scale output of& I" I: x4 w5 _' \1 |' y7 g' h, q
the A/D converter.
/ ~4 i9 d0 \' J Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
" \) \/ w: D9 J& g w$ Q% J1 U the peak level is therefore +16 dBu. The “Input dBu FS” rotary- M: T* a; B3 c# [$ V# i' [
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
" a1 u# v# l3 {& a3 Y) z! w Gain” potentiometer [3] increases the gain by 8 dB.* m8 T: f3 C" h7 y% n+ z: ~. z$ w
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
) R, N2 A. @! M, g6 X: L[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
3 [! z6 h$ X, p/ X1 I* k have more body; percussive instruments are less aggressive.% o% s4 L* G! y% x6 Q* _9 ^
The group delay behaviour due to AC coupling of the stages is different in$ c( k! Q3 z0 ~ r! M4 ~! R6 Q
tube amplifiers.% N, j; {. F8 Y3 f4 |
The “Bass Warmth” control allows to select the frequency range
2 ^) p* ]6 t; T2 O& C (10...200 Hz) within which the effect is active.
* u$ G1 }% ]1 ~$ v6 s' t- ]' L# k[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.7 O8 K% f! N8 s8 E0 h' o H" s
Valve amps have a characteristic response, mid-frequency harmonic content+ S9 \7 \7 p- M) D% U
is emphasized.
" [+ A, y; ^: \5 B( \( w[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
Y! t1 T3 w1 f9 }! J0 ? The harmonics spectrum of a delicately overloaded valve amplifier is completely
5 V+ G% o+ q0 q# J4 H6 b different from an overloaded transistor stage.- I; L/ |! z" k$ A: ]
The “Gain” control adjusts a gentle overload while the odd-harmonics content% I. X k# a' A
can be adjusted with the “Clip” control.
4 b' s- i/ d3 z& p4 ]6 v[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24& u: \" h6 b7 t; u) g2 c. e
dBu FS.9 c [7 \8 G0 X; I& c2 t% Y! y" d
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
4 t0 X7 G1 e! r& { desired channel.
6 d& [: H8 t1 H! F( z1 ?- H; Z The “VALVE” LED is on when the Valve Dignifier stage is active.
. l, a$ m) i' f% y2 w8 C[9] INSERT INSERT function.8 h1 U6 a) e7 W0 J
First key pressure: INSERT POST VALVE, the Insert Send is tapped after% S( ?/ ~- b% l, Q
the valve stage (display: “INS”); the Insert Return is directly fed to the Line- n2 B3 P/ |9 y
and AES/EBU outputs.; K1 e3 }% D8 p( d
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
' u: _8 e8 @; Z+ a1 m( ] the valve stage (display: “INS” and “PRE”); the Insert Return is fed via6 M0 l7 T5 {: n8 L
the valve dignifier stage to the Line and AES/EBU outputs.
0 o. Z/ t8 E7 i8 _5 c: [$ M9 l3 E6 T Third pressure: INSERT OFF, the input signal is fed via the valve dignifier9 L S$ l; [! I0 \+ Y m
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
2 j( h/ b, w! F( q- A4 Q receives this signal; display: none).4 @( [3 c: m$ @
Insert Send and Insert Return are electronically balanced and equipped with' x9 g |+ @6 w0 }- E( k. [9 v
XLR connectors.
8 h" t- a/ W- F3 X[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
7 ~) y* u& |8 _2 i! i/ h ADAT digital interfaces. Each input channel can be switched to one of the
# B/ g( C f& o- S% v2 Y; D! w channels 1...8 of the multichannel interface. If desired, also a mono mix is
" u; ?/ ]6 j) L! A4 d possible by selecting the same output channel for both input channels./ V; w0 _6 k" l D4 G8 B
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
& ]( o% T' A0 b! K- A* \. R channel.
" Y! }3 _ N7 U9 T+ r* a Can be operated only if the input gain selector is in Mic position. The4 I' [8 K S; ]; m5 R9 a
setting remains stored when switching over to a line gain setting.
; J' k7 V/ D! _& V[12] Activates the high pass filter on the microphone inputs of the desired channel.
+ t. s2 ?& L, O& ` Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
8 `4 G$ E4 U. r( O+ H# j$ U; {! E5 \ Can be operated only if the input gain selector is in Mic position. The+ W. D$ n/ a. m' R0 C/ s
setting remains stored when switching over to a line gain setting.
, f+ d0 b( d: X, O[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
! E1 m3 u6 H7 D1 R+ \5 {[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:' k7 s/ u7 N- O! O6 J1 }
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
, m6 d! \. Y- F6 l* M6 I2 j( C Noise Shaping (display: “16NS”) can be selected.
7 \4 g$ u5 Q) {2 F, C8 J; D[15] SYNC Selects the synchronization source for the unit. Possible selections are:3 D' n, h u# b8 O% c R: g; P) M5 B
INT 48 Internal quartz reference, 48 kHz' S/ p9 [* n- i+ b2 K8 F$ E
INT 44 Internal quartz reference, 44.1 kHz
: `' Y8 E Q7 h WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
9 ?2 O- {' w$ B1 c: x AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)" s( n. Y5 T5 |* e
AUTO Selects sources automatically in the sequence AES-WCLK-INT
u* E! R" s# U VAR Indication only, active if the external source frequency deviates from 48 or( W. C3 ?9 @; l" ~3 g& ^# J! U$ A
44.1 kHz for more than approx. ±3 %.
) a0 H) W$ X+ v( J8 b3 o- x0 \[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –8 X3 B$ v8 p. b$ {- U8 _" j" a
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.) @/ L. m$ X( @8 Z! U$ d
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce0 F. Y" b4 t, _6 f( A3 |
the danger of overloading the A/D converter with short signal peaks (if
" q: Y: {- W1 h# K. M active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
6 A# P0 V! v C! \: w4 o$ H allowing for approx. 6 dB reserve before hard clipping occurs: M, j! O6 M$ `8 b
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