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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 , T( V; O5 X8 t. N, t
5 u( z( t/ O, \. T英文电子说明书
; W; t& W# A& o {4 Y9 [2 y* Q5 a[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
( }0 o2 r4 A: d: H/ P( R default settings. The subsequent settings remain stored in a Flash EPROM6 d7 ~! W5 f8 c% i* P$ k) x8 Y
after switching the unit off (unit contains no battery).9 u% @* S: A9 O1 @2 {
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
% d& Y- W& `/ e+ ^ between microphone and line sensitivity setting ranges.5 [0 n. p1 U, o! B( R8 S
Mic: Range –40...+20 dBu
) N0 v$ ^: Q L Line: Range +14 dBu, +24 dBu& v1 z+ V A2 n Y" [) F
[3] Fine Gain Potentiometer for fine input sensitivity setting.6 G4 \4 e+ o* k8 C3 ?
Range of additional gain: 0...+15 dB.
1 i% e! S, { r) l5 Q) L Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents5 r- p) F0 o4 \9 n; ]& e/ i2 T
the dBu value of an analog input signal which causes a full-scale output of* l; i E: @! R, t% j1 K* s& ?! W
the A/D converter.
+ s9 \8 a4 L+ o9 Q Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
. z2 l+ b1 k0 R, C. q% b4 \ T the peak level is therefore +16 dBu. The “Input dBu FS” rotary0 u3 r# u) n, Q1 N S [ u, a6 K
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
6 Q! C: C& ~) s m0 B; ^) ~. G Gain” potentiometer [3] increases the gain by 8 dB. p- V# M8 R. t; x' A( Y" m; `
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active." S# X- d7 f: X6 C3 M
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
" K( i. k" b5 s/ ? A1 Z. H; ` have more body; percussive instruments are less aggressive.6 Q! }- Z+ H6 W' Q% F8 p
The group delay behaviour due to AC coupling of the stages is different in0 ]+ G2 p, a4 H$ g# b
tube amplifiers.
1 N5 {% I) A$ m5 x% ? The “Bass Warmth” control allows to select the frequency range
( _. i0 S9 g h (10...200 Hz) within which the effect is active.
" D" e: G0 Y, Y0 R# ^& n) y2 @. |[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
$ a8 q$ M& \0 I9 U- N Valve amps have a characteristic response, mid-frequency harmonic content0 p# Z5 U0 K: p! N# o; Y
is emphasized.1 i& v: N$ _- }4 C4 |
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
2 g3 H1 r" J- N% O; w" }$ d, @ The harmonics spectrum of a delicately overloaded valve amplifier is completely
: y8 w2 H2 K( n6 W' K different from an overloaded transistor stage.+ p+ [& _0 a5 C9 P8 B1 c
The “Gain” control adjusts a gentle overload while the odd-harmonics content; N6 @2 [$ l5 Z+ H: q. m9 A4 p
can be adjusted with the “Clip” control.; T; b" y7 E: e4 V) E
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
* s% Y/ F5 W+ ?) a; m dBu FS.# r* }) I; J* e
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the- Q/ |8 ?+ k: C6 V7 v& Y
desired channel.
# [' M5 |: T: ?2 R) v/ A: Z The “VALVE” LED is on when the Valve Dignifier stage is active.2 ~2 i4 R) c" P4 }
[9] INSERT INSERT function.
' i- h& E6 U5 l8 H First key pressure: INSERT POST VALVE, the Insert Send is tapped after0 h9 S% e% U& o. m" y* |3 J8 N
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
. T8 `( `) \( |8 l/ [6 Y0 K# Y1 M8 } and AES/EBU outputs.
\/ l# o9 v- K" B Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before, C0 T8 a! U# U4 f. W+ b% S/ n1 F
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via4 w# S& t: u5 H# \1 e, a# k; [% @
the valve dignifier stage to the Line and AES/EBU outputs.
. D( W" m. \1 v Third pressure: INSERT OFF, the input signal is fed via the valve dignifier4 a! C# G1 w' n' i$ z8 o/ p
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
' Q; f/ x. a0 @3 ~# D9 c8 _/ G receives this signal; display: none).) a1 W* C& n' c% G
Insert Send and Insert Return are electronically balanced and equipped with
+ ^5 s1 n; w. k; D5 S3 y/ A! { XLR connectors.5 T: }/ \& g3 a1 G# f
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or) @' N* B3 ~, v( \) O
ADAT digital interfaces. Each input channel can be switched to one of the
& J1 J# J% V9 p2 X5 {6 ~ channels 1...8 of the multichannel interface. If desired, also a mono mix is# D; S& n5 Z) ]& P, L& i# {4 @4 @
possible by selecting the same output channel for both input channels.0 }/ Q+ ^, j0 x/ n
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone0 P# a' [! N. s, c( K+ c) E# f
channel.1 ]$ }1 q) H. \6 p- J, v
Can be operated only if the input gain selector is in Mic position. The
# u) ]2 b- |/ U& p! b' S0 Y+ e setting remains stored when switching over to a line gain setting.
0 x& @$ ?7 ]. W; G$ b# X7 j# [[12] Activates the high pass filter on the microphone inputs of the desired channel.! ]. q% _/ E* K; J
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.7 a$ R. \ \! z o A3 H
Can be operated only if the input gain selector is in Mic position. The
/ `7 f( w% ?+ \8 `1 I+ g setting remains stored when switching over to a line gain setting.
_! W1 `7 {1 R9 M[13] Ø Toggle key to activate the phase reverse switch of the desired channel.4 V6 M4 e1 E: q
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:6 X, z/ y5 v: A: c S
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
9 O% E' I- H# W0 g; f* d U Noise Shaping (display: “16NS”) can be selected., q! l6 H" {) B: @
[15] SYNC Selects the synchronization source for the unit. Possible selections are:$ p; }* h+ ^6 i8 u, M2 [3 k
INT 48 Internal quartz reference, 48 kHz' s2 _; M) `" N% |. a
INT 44 Internal quartz reference, 44.1 kHz+ a' S0 T9 b: Y; W
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)5 Z# N! J, `# `* C
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)
4 g9 @: D# s; T) e+ z, W6 h \+ f AUTO Selects sources automatically in the sequence AES-WCLK-INT
! v% F1 B4 x0 a, V, g$ V) H4 F VAR Indication only, active if the external source frequency deviates from 48 or
+ Z/ W5 l8 d( b9 Y 44.1 kHz for more than approx. ±3 %.6 [& R+ C; e4 w" U& L- S% B
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –$ B8 \! A8 q O4 E1 A
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s." N) q( k3 v: o
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
, ]0 d6 r# X0 D$ Y the danger of overloading the A/D converter with short signal peaks (if
: O# ?& y6 m' K active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
" Z; c1 w1 B q7 A1 j' }- s allowing for approx. 6 dB reserve before hard clipping occurs' g$ i5 L( D6 d* n+ C) P; I
. j# Z# f# F& p- A- w: Y
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