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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( t4 ~; R# K, C2 g
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory3 j1 B6 O/ Q' {7 G/ U7 N9 G1 i/ {
default settings. The subsequent settings remain stored in a Flash EPROM
O+ l7 w3 S* ^$ H after switching the unit off (unit contains no battery).% [( h* P7 j7 d3 T+ L- t1 a) Q4 q
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position0 y) n/ x& r1 C
between microphone and line sensitivity setting ranges.
- X2 y# E9 B8 Y/ N/ W6 [ Mic: Range –40...+20 dBu& ?8 x. ?$ W' Q5 q; H! U( ]
Line: Range +14 dBu, +24 dBu# Z, \/ a. T& |3 L# N' I
[3] Fine Gain Potentiometer for fine input sensitivity setting.0 ]( W- ] q b7 l5 s
Range of additional gain: 0...+15 dB.# d, Q: |& J4 t
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents0 e) M- Y+ v/ O
the dBu value of an analog input signal which causes a full-scale output of* _; ~+ t. [* H7 R+ w% l7 v1 G
the A/D converter.
& u4 w7 H/ t! K8 Y7 K' u9 C1 Z( v; ~ Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
% o$ `% q+ c8 F' m the peak level is therefore +16 dBu. The “Input dBu FS” rotary
0 f) T- A7 L% { switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
- M. h) e$ a0 _- t6 c% O Gain” potentiometer [3] increases the gain by 8 dB.
, o8 x! o& M) d9 e* U) \$ V[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
; C. o8 ] U7 g' j[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals" z* y+ R7 Q: a: g2 m
have more body; percussive instruments are less aggressive.
& P* s- n& n+ y& E; S. E The group delay behaviour due to AC coupling of the stages is different in
5 v b1 r% f# O' ^6 {0 u tube amplifiers.
" S# k+ }& ^* B# k+ W The “Bass Warmth” control allows to select the frequency range
% x2 `! r+ j8 p/ R( j (10...200 Hz) within which the effect is active.
9 v# D1 k) i3 R; ]7 q: ~. M[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
. U1 c- |, `/ j9 w C0 O Valve amps have a characteristic response, mid-frequency harmonic content
N: t, y, g6 c( M$ q/ v) L7 @+ { is emphasized.
0 V1 {. R7 f6 p- E1 X6 i$ |, A[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
, U" ]* I3 I0 B2 c' H3 U* i The harmonics spectrum of a delicately overloaded valve amplifier is completely
( k, j* k1 Q2 {6 H4 w: W+ D different from an overloaded transistor stage.
$ B$ L% t. R7 T! J The “Gain” control adjusts a gentle overload while the odd-harmonics content
! k5 s% Q6 r9 n1 ~( s0 R can be adjusted with the “Clip” control.- F$ o+ c+ A+ V; J+ Q A+ J
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24* _; y; |' _; }
dBu FS.) W6 e6 k( c# S! y, Q
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
, H) P7 a, T; F0 m desired channel.6 W( A; Z* }9 E5 j; U% b1 j
The “VALVE” LED is on when the Valve Dignifier stage is active.1 C( L, a7 X+ b1 c
[9] INSERT INSERT function.: n' }! u4 }3 V$ `" }
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
; ?0 ]; c P' k& _ L0 A. F the valve stage (display: “INS”); the Insert Return is directly fed to the Line+ o* C9 s( I5 u
and AES/EBU outputs.
# N6 t9 R0 O1 n& k Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
! Z3 @+ e! b3 p! h4 D# V6 G! J% K the valve stage (display: “INS” and “PRE”); the Insert Return is fed via, {$ ?8 X7 N& w) D p: O1 _3 C
the valve dignifier stage to the Line and AES/EBU outputs.1 U. M0 T3 o; _, V% V
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier4 ^: t4 w9 e; i: j
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
5 f) w o) z( d7 I; Q receives this signal; display: none)." K) J3 o6 a, K* ?/ q. B; o
Insert Send and Insert Return are electronically balanced and equipped with7 G2 D! g! V" @- d, G4 b
XLR connectors./ U- w4 W9 U# I' j; W( W# e
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or# N3 E$ ] s. _# D: S% E# z
ADAT digital interfaces. Each input channel can be switched to one of the+ |; F8 {! ?" }4 [3 t
channels 1...8 of the multichannel interface. If desired, also a mono mix is
3 e" [" ~( P/ W# ?' G possible by selecting the same output channel for both input channels.
; ~' o0 d0 Z |[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone8 n- n; U% z0 j+ T% [) h# Z. @. c# \
channel.2 E1 I1 K6 G% J+ v& R6 t
Can be operated only if the input gain selector is in Mic position. The) G1 b/ @! a" X' w' y2 N9 A, `% d/ F5 {
setting remains stored when switching over to a line gain setting.
- x! q* L+ R3 C" a8 L$ j[12] Activates the high pass filter on the microphone inputs of the desired channel.
3 J6 }9 j- S, D Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.2 }. U/ K: ~; @$ G& ~
Can be operated only if the input gain selector is in Mic position. The
6 p9 _3 a, W6 g& U$ x2 G4 Q setting remains stored when switching over to a line gain setting.
# e! _' u3 V' U$ e[13] Ø Toggle key to activate the phase reverse switch of the desired channel.* ^9 B8 A3 I3 [: t
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
, l+ k. ?+ V7 S: D. j1 y1 q “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
' e6 _2 `6 n, G Noise Shaping (display: “16NS”) can be selected." j) y+ r. ]& i( o
[15] SYNC Selects the synchronization source for the unit. Possible selections are:0 {& b& b# q6 P* r. ~3 E) u7 j o" `
INT 48 Internal quartz reference, 48 kHz
2 T" R% U `8 Y( W7 v8 X INT 44 Internal quartz reference, 44.1 kHz* S) J \* x9 D- `
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
; r+ `4 O3 e+ y& O' W& a AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
8 ]/ ~8 y( C" E* _1 a6 w7 p2 | AUTO Selects sources automatically in the sequence AES-WCLK-INT
) b& a% T4 E7 y% [ VAR Indication only, active if the external source frequency deviates from 48 or- r2 `: d1 x3 F8 Y
44.1 kHz for more than approx. ±3 %.
4 @9 @ Q2 ~2 K+ R[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –$ c @4 ]; y5 | A
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s. `- }4 b7 l$ m* }# Y1 q
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
! Q6 u( T1 @. A$ C# n; B5 k the danger of overloading the A/D converter with short signal peaks (if
; [) j# \! v3 D7 o active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
S8 P; P* x% G! H( j allowing for approx. 6 dB reserve before hard clipping occurs l0 U, p( I; g# j9 H$ [4 Z8 R
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