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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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英文电子说明书, }( D7 w& G4 R7 `6 T
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
# ~9 Z. d# ]/ L# C% V default settings. The subsequent settings remain stored in a Flash EPROM
L/ Q* {! M8 V& R- k1 t after switching the unit off (unit contains no battery).* G4 B3 t. {' \2 l+ D$ U# ]. w
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
4 x: ?2 V" |# j- g) i, n; N between microphone and line sensitivity setting ranges.
& @9 D/ r# t+ _/ Z Mic: Range –40...+20 dBu
. \2 {0 n2 Q/ I c- i Line: Range +14 dBu, +24 dBu1 o! r( }0 J! O3 E+ T
[3] Fine Gain Potentiometer for fine input sensitivity setting.. O0 w: }* J. ~4 j: k0 r1 G
Range of additional gain: 0...+15 dB.6 I8 V( B# ]# Z v3 A
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
/ g. ?* U% s+ T4 w9 q# Q- E the dBu value of an analog input signal which causes a full-scale output of* ?# M, `+ e. T
the A/D converter.
% ]) h' a1 _# n0 o* U Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
# A. H* W0 e* I the peak level is therefore +16 dBu. The “Input dBu FS” rotary3 o& C! l5 N$ L% W! _
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
& N3 N2 n# l& ] _ Gain” potentiometer [3] increases the gain by 8 dB.9 l0 D: ^2 W5 `
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.
, `9 U) ?9 [. h7 w. G[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals4 J* v' w3 G7 T" K
have more body; percussive instruments are less aggressive.
( I4 g6 ]5 }% A5 @6 x4 U, N The group delay behaviour due to AC coupling of the stages is different in
4 y( A0 D9 Z0 h* [' d2 `8 Y. Q3 | tube amplifiers.( ~' m) M& S: E( n. c8 E e
The “Bass Warmth” control allows to select the frequency range
7 A* @9 k9 Q) `8 H8 ] (10...200 Hz) within which the effect is active.( J7 M2 M f9 O/ H0 [; U
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments. u; V/ u/ i! D
Valve amps have a characteristic response, mid-frequency harmonic content
6 y; Y# f. a$ O, y3 F is emphasized.3 Z5 Q5 \- b6 x$ n* A
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
3 m) @* t+ s& M) f3 X$ T1 i) K& T The harmonics spectrum of a delicately overloaded valve amplifier is completely- ]2 }, X/ B# P+ D% t5 m% m2 Z
different from an overloaded transistor stage., W5 O1 d. {+ \" l; B, k0 r: E
The “Gain” control adjusts a gentle overload while the odd-harmonics content1 x* _$ j& W7 c3 n9 ^3 ~
can be adjusted with the “Clip” control.
6 k; `2 d) u; ]% w2 ~* @[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24 T6 i# C6 D; A+ \" v
dBu FS., ]6 f6 G$ ?8 b# U: d7 `' T
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the
' Q5 U, P1 W9 c& M0 u; L! p# ` desired channel.
1 I; F) s# z6 C The “VALVE” LED is on when the Valve Dignifier stage is active.5 Y2 n5 y; w8 L1 K$ w
[9] INSERT INSERT function.
1 x7 R+ |( V. a/ x, J% r; S First key pressure: INSERT POST VALVE, the Insert Send is tapped after- p7 Z6 D2 n1 x) m7 ]. Z
the valve stage (display: “INS”); the Insert Return is directly fed to the Line! F) v6 G* } c. U3 U. i
and AES/EBU outputs.
9 h/ }+ o( M1 a" P8 d7 T Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
/ J- v+ d4 t5 i5 q8 I( b3 K3 \3 b3 |( l the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
) C! p5 Y5 i* w8 s+ h8 C the valve dignifier stage to the Line and AES/EBU outputs.
2 r+ r; {- w \/ q: J- l Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
: k' p* F# G1 } stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
' @! |9 x$ j& M/ S% D receives this signal; display: none).8 u; G) g2 W) ?; a0 E
Insert Send and Insert Return are electronically balanced and equipped with
+ r$ f7 Q- k a; C( s" _8 ^+ T XLR connectors.
* b/ ?% l) A( Y8 A[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
4 l( C' h* s9 d- } ADAT digital interfaces. Each input channel can be switched to one of the, ~1 d8 [. N! w
channels 1...8 of the multichannel interface. If desired, also a mono mix is
# K1 v! K k) z' d W& o possible by selecting the same output channel for both input channels.3 F" Q: S) e* M( E4 g* b. @
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone+ w7 o/ @) d) S# \, I
channel.3 d$ V3 s. ^( J. \
Can be operated only if the input gain selector is in Mic position. The0 v; ^* Q0 E/ V+ C0 Q* D, W4 J i
setting remains stored when switching over to a line gain setting.
n* B" Y6 L9 R) _7 |4 g[12] Activates the high pass filter on the microphone inputs of the desired channel.
: X# B; Q4 s+ c) y Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
- z- s. {! E. `! s5 Q. C; P N; p Can be operated only if the input gain selector is in Mic position. The5 Q" e9 Q; F% z. i& w+ e E
setting remains stored when switching over to a line gain setting.
9 B7 G" Z0 }2 y; J* ^" @, o[13] Ø Toggle key to activate the phase reverse switch of the desired channel./ B) w7 b. M% u7 l# O/ w+ d0 m
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:2 z. C2 \( p$ M9 O) P8 e4 S
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with l* F+ @3 d. X9 Q
Noise Shaping (display: “16NS”) can be selected.
$ R, d5 Z+ h- q% }& ^ i, o3 U[15] SYNC Selects the synchronization source for the unit. Possible selections are:
0 O$ m+ O; N8 o/ k, ^8 M INT 48 Internal quartz reference, 48 kHz
+ N& ~* B+ z' P3 w) R: \0 M/ Q! l INT 44 Internal quartz reference, 44.1 kHz
3 H( @2 L2 A" n WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
, [- T7 x' J5 D" ~* v6 ]) b6 o AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized); c& ?! }% i- U, L& D
AUTO Selects sources automatically in the sequence AES-WCLK-INT# K, K+ e. G# U% Y- t1 c# @
VAR Indication only, active if the external source frequency deviates from 48 or( ~) C& |9 i8 a3 f/ r; ?+ m7 }
44.1 kHz for more than approx. ±3 %.: b: y, P) q9 K0 O& R
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
1 `& W7 X0 |2 p6 v, Z' l either permanently (display: “HOLD”), or with automatic reset after approx. 2 s./ A L* d0 E6 E
[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce; _: a+ B" G1 u% B
the danger of overloading the A/D converter with short signal peaks (if
d* H9 U2 Z6 l1 i$ F( r! ]6 u3 M active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
: e0 L! M2 M/ @# p% {4 s allowing for approx. 6 dB reserve before hard clipping occurs
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