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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 0 h0 P: ]$ `3 @
" D# s8 D7 b; @+ U英文电子说明书
n$ l. M( ]6 f1 j[1] POWER Switches the unit on or off. The unit is ready to operate with the factory+ X! [ z: f% n) e$ ]2 [/ x
default settings. The subsequent settings remain stored in a Flash EPROM
4 I% r# A) @: ` after switching the unit off (unit contains no battery).: A! Q) a' S% H J- i8 _
[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
% n' F8 q) N! ^' w$ b5 d% _ between microphone and line sensitivity setting ranges.
( x/ r4 ~) j. ^& `; A Mic: Range –40...+20 dBu
' s. P6 B+ _2 w6 v; F Line: Range +14 dBu, +24 dBu
4 {2 N9 G9 W/ V9 E# H& w7 t[3] Fine Gain Potentiometer for fine input sensitivity setting.
3 b1 j) m3 E7 m& n( [( y Range of additional gain: 0...+15 dB.4 U/ v K( }% u7 K. {; m4 I
Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents2 Y) j& l Y- H* w) P, [) A
the dBu value of an analog input signal which causes a full-scale output of
X: b, e9 ]5 _0 L the A/D converter.
. v+ I1 Z1 m- d Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;5 d% o' J/ d. v0 E$ G+ ?5 ^* `0 M
the peak level is therefore +16 dBu. The “Input dBu FS” rotary
9 F% t4 ~: b8 Y4 V switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
R1 T! o" d$ \ Gain” potentiometer [3] increases the gain by 8 dB.
{9 H5 l6 ?: H/ a[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.& `' A% E/ I; ]8 Q6 u
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
+ N, Y8 v+ N6 }+ I8 z) m* G0 s. W have more body; percussive instruments are less aggressive.
2 b; p) S# _9 e) B8 k6 n The group delay behaviour due to AC coupling of the stages is different in
$ r% _# n% i, w, u. p tube amplifiers.
- `! T C" i% i7 o+ n; i The “Bass Warmth” control allows to select the frequency range
& W5 W% E. P% s: I' n( x: ?4 W3 A (10...200 Hz) within which the effect is active.
`+ `" _ f' x( z9 @' h[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.! h8 w! d" O+ o, Q; Y# l% U
Valve amps have a characteristic response, mid-frequency harmonic content# P+ g9 ]) J. u% z, p4 a. e
is emphasized.$ g; k* x( l0 I6 y5 `
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.! L8 r, j7 ?' h& _; X
The harmonics spectrum of a delicately overloaded valve amplifier is completely5 ^1 W, J/ _# \
different from an overloaded transistor stage.& v, t0 H2 v8 g/ M( F/ k) e
The “Gain” control adjusts a gentle overload while the odd-harmonics content3 q9 X1 \* V' ]# X: x
can be adjusted with the “Clip” control.' \$ y T. ~: M" q6 F5 B! B6 j; X
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24- z. _$ Q5 c5 {6 e h0 X) t
dBu FS./ I) F) N5 x, E' i4 Z
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the% |- _' u! z1 F9 [- @
desired channel.# n0 g! k, c) g Q5 @7 C u1 t# N
The “VALVE” LED is on when the Valve Dignifier stage is active.
- r( e4 Z3 _8 n4 K0 }% S[9] INSERT INSERT function." m- O$ m0 T q5 Q' l' b
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
: a+ y: Z9 [0 u) M+ |, `: u the valve stage (display: “INS”); the Insert Return is directly fed to the Line1 e0 x; \# F6 K
and AES/EBU outputs.
/ p1 ]2 e) G* s Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before
3 B* a. e0 d7 n& F" E the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
3 X! Z \6 t1 C the valve dignifier stage to the Line and AES/EBU outputs.1 B3 ?3 I- ~/ m0 n/ g9 f# D' O1 A7 k5 r
Third pressure: INSERT OFF, the input signal is fed via the valve dignifier- e) v6 J7 \1 A" ]' s, F' s' r# f
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
2 E. H9 e5 |# _2 d: W receives this signal; display: none).2 I/ p; z! i6 `7 G
Insert Send and Insert Return are electronically balanced and equipped with+ G" q1 k7 e" V% a) W; F# s% R
XLR connectors.
A* D4 O+ B9 F8 C, N5 p[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or7 E. `( }' Q4 F/ A
ADAT digital interfaces. Each input channel can be switched to one of the
# z% s/ ?4 l' V: g5 G7 W8 Q channels 1...8 of the multichannel interface. If desired, also a mono mix is
" e! Y# s O. W possible by selecting the same output channel for both input channels.# F% S+ e6 P1 l- \# |! B: W, P
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, S7 a% Z0 O) }+ t5 C* L) C channel.# g& A& B: Y* M4 b3 P
Can be operated only if the input gain selector is in Mic position. The! F- ?: p# G0 _( g I
setting remains stored when switching over to a line gain setting.' ?# T' H c2 `, {
[12] Activates the high pass filter on the microphone inputs of the desired channel.5 R F3 A* }/ R& z+ G) g+ K( `% U& Z
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.' m/ d% X4 l! x: w7 T6 J
Can be operated only if the input gain selector is in Mic position. The
9 V; \* e* Z V- }( L setting remains stored when switching over to a line gain setting.
; u5 q, Q0 T$ W4 o. D6 A[13] Ø Toggle key to activate the phase reverse switch of the desired channel.
/ h/ r! i6 E2 r3 ^[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
$ H N$ f0 p& ]$ t “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with: D* I3 z* b& C$ b$ G( V$ W
Noise Shaping (display: “16NS”) can be selected.
6 h" q1 M% [6 M u3 c m[15] SYNC Selects the synchronization source for the unit. Possible selections are:
6 r2 R- A( i2 O/ G INT 48 Internal quartz reference, 48 kHz
& v: |5 U# z" l4 _ g" J1 m INT 44 Internal quartz reference, 44.1 kHz
( k- N# ~; W. a( K3 h6 N WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
{1 R" _! V" |" d7 T AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)/ I5 y$ e0 S* Z
AUTO Selects sources automatically in the sequence AES-WCLK-INT
& h# H7 P5 ^3 X VAR Indication only, active if the external source frequency deviates from 48 or: ?+ k1 z. E' M+ _, ~5 P
44.1 kHz for more than approx. ±3 %.
* }+ j. I3 z2 A) u[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –
( S5 b# B3 M& y! u2 s either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
: m7 Y ?2 V; f2 W" w+ |3 w( Q, Q' u- _[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
' u. h" Q9 w5 B; Q the danger of overloading the A/D converter with short signal peaks (if; r7 u9 n: K) Q/ D* M" ]; H( J
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,4 ]/ H4 q, Y5 }4 g' _
allowing for approx. 6 dB reserve before hard clipping occurs
# v/ Z; Z s% @% Z
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