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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 ' \& A6 N* @/ X! V
( j% }5 c+ I, @' r ~: e$ `5 {英文电子说明书
) ?, g1 ~" B( a: h$ U[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
8 j S1 r$ _- k2 ~) L, O \ default settings. The subsequent settings remain stored in a Flash EPROM+ \' @$ \' y: m4 |. ~
after switching the unit off (unit contains no battery).
) K/ f( [3 v; U" Y8 F3 x, _$ b[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
4 j5 Z( N- v! M# @' x between microphone and line sensitivity setting ranges.; N5 b7 n' W% ^' e
Mic: Range –40...+20 dBu
; I) Y9 L- m2 V0 ~. R5 O Line: Range +14 dBu, +24 dBu
" e1 G& z. U' [8 W z[3] Fine Gain Potentiometer for fine input sensitivity setting./ Y( T" _0 j! }
Range of additional gain: 0...+15 dB.6 J9 D* ?3 z& m" `7 ]% l
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
: m) L3 x0 e( J# i, A% I1 g7 b the dBu value of an analog input signal which causes a full-scale output of
3 f+ H+ {2 ]! Y) X9 B: Z9 U the A/D converter.( q9 M: C8 i/ Z8 D
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;1 Q" z* S6 @. O' O
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
7 P( P1 g" D+ E& a9 S, x2 E switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
# A; k6 [5 a# d" ^3 l Gain” potentiometer [3] increases the gain by 8 dB.
. p7 u& A( e6 [" j[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active., D" Y: V0 \9 ^: Z( i/ A0 [8 {
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals( A! N5 l: P- _- ^9 U
have more body; percussive instruments are less aggressive.
6 U% l; c) Z2 v. @8 H0 ]7 n. T The group delay behaviour due to AC coupling of the stages is different in; Q/ r/ @1 k3 Y C, M; [; v8 y. J; \
tube amplifiers.
$ j& b/ L7 G5 W, ]- B- R0 ` The “Bass Warmth” control allows to select the frequency range l. D) D, i' L/ ^1 d
(10...200 Hz) within which the effect is active. }9 J6 q$ n$ k S
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
( s# S) s" H9 } }6 l Valve amps have a characteristic response, mid-frequency harmonic content; n" l% q- ?. {5 e( ^( r5 b4 j
is emphasized.5 p* V! R. T- Q9 x) N: T( n8 l! X/ T
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer./ D% P9 T* ?8 l- f. r$ m6 x
The harmonics spectrum of a delicately overloaded valve amplifier is completely; B3 h% X w) }
different from an overloaded transistor stage.( Q4 @4 c% M! s
The “Gain” control adjusts a gentle overload while the odd-harmonics content
( S. V& X# \. W0 M can be adjusted with the “Clip” control.
, Q- h; F4 ^6 Y' f. P0 T2 `0 l( S[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
+ B' C8 K: [4 W dBu FS.! G" a3 F( Z6 a1 _
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
7 Y) Y( ~7 C0 k# |8 S3 P8 f+ T7 \ desired channel.- o2 h. u+ R! o: l- b, b; b
The “VALVE” LED is on when the Valve Dignifier stage is active.
9 P" O' k5 a& T[9] INSERT INSERT function.
, F4 |& v5 W3 b$ m3 K i2 W First key pressure: INSERT POST VALVE, the Insert Send is tapped after1 K: ]7 b2 F* I5 m& Y- \0 C
the valve stage (display: “INS”); the Insert Return is directly fed to the Line
5 V: K3 b9 Y4 T) p and AES/EBU outputs.. O5 G) e X6 w+ E6 f
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
. J, j; _, y/ S2 }* |& X the valve stage (display: “INS” and “PRE”); the Insert Return is fed via. s0 T1 E* _1 V+ n& I* i) o
the valve dignifier stage to the Line and AES/EBU outputs.
* R: B' w0 D+ ] c% _3 ^ Third pressure: INSERT OFF, the input signal is fed via the valve dignifier+ V3 e) v* b6 J/ i- R+ G
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output! L" X% g' D; V6 o$ }* d, K6 d
receives this signal; display: none)./ H8 ]* ]( `) w* B
Insert Send and Insert Return are electronically balanced and equipped with2 r1 @* z3 d9 y
XLR connectors.
7 q; P( Z6 L, J5 o[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or; r+ ^- `$ p- o) A7 M
ADAT digital interfaces. Each input channel can be switched to one of the( L) l6 a! T; }7 u4 e& ~" {
channels 1...8 of the multichannel interface. If desired, also a mono mix is; R, B' h% A0 [
possible by selecting the same output channel for both input channels.
1 B" \; V1 O1 C/ {0 J. k4 |% F[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone" ] y5 H, h& p8 M1 k; c
channel.
( A6 h( y5 Z4 l. N) X5 p Can be operated only if the input gain selector is in Mic position. The, Z* `7 ? M9 I4 \2 N. S
setting remains stored when switching over to a line gain setting. X& V6 Z. F9 N- J, c7 p
[12] Activates the high pass filter on the microphone inputs of the desired channel.
, s. Z) j6 c( k: N# A- Q2 m" \ Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.7 P, Y; H; F) b/ N# Q( B, y& ~4 M
Can be operated only if the input gain selector is in Mic position. The
+ L4 u/ Z, Y4 G7 a. X setting remains stored when switching over to a line gain setting./ ^+ {0 }+ B* G' w. J8 p$ D3 i
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
' y' _# J' h$ ^/ P5 j/ [4 \' a[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
; x! W4 ?5 S$ T' r$ N8 r “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with/ F- j3 I3 Q# p" D
Noise Shaping (display: “16NS”) can be selected.
. @! v& z8 y, B. D& y2 Z% I[15] SYNC Selects the synchronization source for the unit. Possible selections are:+ z( h/ F: s( |% B
INT 48 Internal quartz reference, 48 kHz
6 u9 B8 L# d) G. I# C, @0 k0 u9 G% B( ] INT 44 Internal quartz reference, 44.1 kHz, Z5 x, }9 v; f |! z
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)- [, b5 s. v& L- F5 u
AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)( e2 `, g3 s7 P$ K5 p# r8 t
AUTO Selects sources automatically in the sequence AES-WCLK-INT
F9 Z" ^- J* H1 D VAR Indication only, active if the external source frequency deviates from 48 or
! r( v. {8 {0 x 44.1 kHz for more than approx. ±3 %.9 n' H/ O: Z/ W
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
* I7 ]: Y, J3 V- E8 ]+ d; S+ g* _ either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
# ]8 P4 V! P( w' g. w0 y[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce3 Y; y& H0 O3 _8 F
the danger of overloading the A/D converter with short signal peaks (if
" [; @, ~, Y2 p! d* ?$ k3 l active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,' M' E% X9 Y8 f3 G1 T) O
allowing for approx. 6 dB reserve before hard clipping occurs
; X/ f$ `( o3 @, ]+ K/ ]( O$ \8 |* ` * T7 B3 V& }- @; {; R
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