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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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- n# ^" W$ d& P' T! R) e6 }; X英文电子说明书
0 v1 r* e5 U/ s( P# h5 J8 N; K0 U a[1] POWER Switches the unit on or off. The unit is ready to operate with the factory n: L( E- O/ ?- B- c# R, w' }
default settings. The subsequent settings remain stored in a Flash EPROM
% Y+ _' L$ }; c3 h) P after switching the unit off (unit contains no battery).2 H3 s- K. s1 m, N7 T3 h
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position; a3 L0 Y5 S J4 D
between microphone and line sensitivity setting ranges.
1 b7 s2 r" ^5 a3 `( h2 i Mic: Range –40...+20 dBu
+ @" C! m% q* T9 u; ?2 | Line: Range +14 dBu, +24 dBu4 I. X, y& q6 {5 B# \
[3] Fine Gain Potentiometer for fine input sensitivity setting.1 V2 m" J3 \+ B. l3 ]- G- f
Range of additional gain: 0...+15 dB.+ d8 {: @( e8 V; r
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
( B5 V- h) ]6 S* Q) Q3 W the dBu value of an analog input signal which causes a full-scale output of
' Z. B w7 a& @) U2 u the A/D converter.
$ O8 g# \) X/ N5 l G/ ?% f6 D+ e6 ?6 ^ Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
" @* [/ R9 G3 W/ y the peak level is therefore +16 dBu. The “Input dBu FS” rotary% x A6 w3 y) F- p+ A
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
6 M6 ]% Q% t: @9 K2 F: q# \ Gain” potentiometer [3] increases the gain by 8 dB.$ x- s! K1 G* X; N
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.: N9 o5 ~% Q" _6 i* e, ~, y; Z3 d1 J
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals4 W' U& G( @ |- X; C
have more body; percussive instruments are less aggressive.- N3 P; V; V: o+ W* n* r
The group delay behaviour due to AC coupling of the stages is different in
" |% Z7 q w# [7 R. C3 P) J tube amplifiers.
* I f( Z6 v7 \+ C( L9 \) Q The “Bass Warmth” control allows to select the frequency range( f! g3 b: I$ _3 ]
(10...200 Hz) within which the effect is active.
4 L- x' E+ r. [0 d8 a* s; R k' w; v[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.; H' B% c. L6 X
Valve amps have a characteristic response, mid-frequency harmonic content$ s+ e' S/ r- X: g! n
is emphasized.
{3 C/ L3 L! @7 I[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
: F, f. N3 W' G! z3 u+ Q& D The harmonics spectrum of a delicately overloaded valve amplifier is completely
- h& G- X8 v2 l; |& I, K% Q different from an overloaded transistor stage.7 t* w: c6 M6 V$ n) v
The “Gain” control adjusts a gentle overload while the odd-harmonics content" j4 J( b* r0 `4 N, W
can be adjusted with the “Clip” control.
1 I/ l6 K% v" J5 [7 J& c[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24( U6 L! U, }# _
dBu FS.- K2 ^' g1 _0 b0 m- z! \: o& l
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the: n/ b2 k) z: s# c3 C
desired channel.
. B) o. c8 W5 d3 T8 P The “VALVE” LED is on when the Valve Dignifier stage is active.
) T. y8 g) _& b7 S. F. S C$ I1 T[9] INSERT INSERT function.
$ _; J5 e v2 A1 Z0 o First key pressure: INSERT POST VALVE, the Insert Send is tapped after* t4 _ P1 s$ _$ c' F- ^! b
the valve stage (display: “INS”); the Insert Return is directly fed to the Line! M y. u% l& G
and AES/EBU outputs.
+ _# ^& O1 x" h/ y; k* p: A& ~; P Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before- l1 x3 A- |5 n" p3 K6 O
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via7 g4 h) l2 R- y. W# w
the valve dignifier stage to the Line and AES/EBU outputs.
' O0 E4 R, |9 q5 {0 Z Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
Q# @$ a# I& n9 Q2 b% g stage (if active) to the Line and AES/EBU outputs (also the Insert Send output& A$ }2 c, n1 w* S- a4 e" n
receives this signal; display: none).
! {, @8 E: X/ c Insert Send and Insert Return are electronically balanced and equipped with' ?- V) U, b1 I* T6 @2 b, C% P
XLR connectors.
& T" D+ L* b0 y- z$ ?& k* Z4 f8 `, s[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
( V9 e# y8 y9 X" @2 i" X ADAT digital interfaces. Each input channel can be switched to one of the; T6 @3 R6 T. q" q/ J# p
channels 1...8 of the multichannel interface. If desired, also a mono mix is/ x$ x: N) H3 v. }
possible by selecting the same output channel for both input channels.
. ^* X6 l3 N: r* p& X7 C" r( v/ ^[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone+ l& _) e, f' M! f& c6 X! v7 {
channel.
' X" \3 y, Z' v( L; c( j) | Can be operated only if the input gain selector is in Mic position. The
6 N6 L, m% D4 u6 e! P setting remains stored when switching over to a line gain setting.2 @# O2 x/ M: \2 ~2 m& ?
[12] Activates the high pass filter on the microphone inputs of the desired channel.
) J! W. J/ P o% l4 X8 L Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
w% O3 s5 u: h- d Can be operated only if the input gain selector is in Mic position. The# B" n8 J, A) ~6 S3 Z( q- ~; ?
setting remains stored when switching over to a line gain setting.
( H# C1 R: y3 e4 K6 t[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
% f& l2 @7 w- O+ Q[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:9 Q# B% ?" `9 t/ m, i# ]! D
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
X1 Y3 a2 i3 O& E( o H Noise Shaping (display: “16NS”) can be selected.
8 F6 a5 g0 U3 L5 I6 L) w5 c: j' s[15] SYNC Selects the synchronization source for the unit. Possible selections are:9 O2 e2 b. d4 \& K
INT 48 Internal quartz reference, 48 kHz7 O3 |" U- o n9 k- G- `
INT 44 Internal quartz reference, 44.1 kHz e1 j* N9 n6 d2 ~" C$ S* B% T
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)1 r- x) q% X9 l4 j0 @# t$ I7 _8 b
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)1 _+ t, n% D' o0 n9 J" {1 D* K
AUTO Selects sources automatically in the sequence AES-WCLK-INT
; u, M0 T/ z* M# M0 D VAR Indication only, active if the external source frequency deviates from 48 or7 s3 M' J4 L9 V
44.1 kHz for more than approx. ±3 %.1 O4 t g- g3 A& R2 Q* J
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
9 w# W, `& M4 r: X) x4 A$ k8 c* J either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.6 F6 D+ F! }" P/ w
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce: n! w$ f8 t3 s3 p
the danger of overloading the A/D converter with short signal peaks (if
& P9 n, {% a& |8 {4 Y active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
' h8 \& o9 S9 Z: J6 w allowing for approx. 6 dB reserve before hard clipping occurs. u$ W8 b7 U2 c6 q( d
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