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发表于 2012-5-21 23:23:18
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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
# G r$ M. R. S9 J( m( z[1] POWER Switches the unit on or off. The unit is ready to operate with the factory, P0 I8 S% `( }2 C- {
default settings. The subsequent settings remain stored in a Flash EPROM9 k( M7 m& J# B; x4 g' S
after switching the unit off (unit contains no battery).
# t+ r, `& x# h! J% Y0 J8 I[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
4 O+ I0 }1 a, S5 G8 f' E6 B between microphone and line sensitivity setting ranges.: z# B, e6 J* I1 K- {0 C' s7 b* @
Mic: Range –40...+20 dBu& ^/ s9 p) D2 ^" w `
Line: Range +14 dBu, +24 dBu( z; m* A9 d/ z2 C
[3] Fine Gain Potentiometer for fine input sensitivity setting.* H$ t O' _! \3 b& J7 G
Range of additional gain: 0...+15 dB.
( P1 o7 s% w1 E$ c8 T Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents r) X3 b# \/ V& W, Q# D& _
the dBu value of an analog input signal which causes a full-scale output of
$ i9 q9 d8 B' a7 C the A/D converter.
" Y8 B, ], \8 \/ e9 S( b Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
( @- `% _; N! @6 p- E the peak level is therefore +16 dBu. The “Input dBu FS” rotary
( b5 e% ]+ m* `$ f$ ? v- e switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
3 F @# Z n' x+ K Gain” potentiometer [3] increases the gain by 8 dB.
0 m: Z" a5 ]& e[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.5 J7 r- i$ G" i: e% i1 R0 N5 r
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
4 h0 V2 H- H. V5 T have more body; percussive instruments are less aggressive.8 Z5 I3 {$ g+ M
The group delay behaviour due to AC coupling of the stages is different in$ ]$ N8 H8 x2 j0 d* L/ K+ T
tube amplifiers.
* |% Z i9 G9 w' I/ I The “Bass Warmth” control allows to select the frequency range
" w. k* k- U% z4 ~+ M7 O3 f (10...200 Hz) within which the effect is active.
$ a5 ~9 ^* |( k2 k) e% S[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.* ^: f- R/ J4 X5 G g2 X
Valve amps have a characteristic response, mid-frequency harmonic content
( P# i* P% A6 Q- j" C- x. Q( A is emphasized.
4 _1 U4 u" B# X9 I3 Z# N, K6 B[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.
1 ^& D/ G! g& \ T& ? The harmonics spectrum of a delicately overloaded valve amplifier is completely
* j+ [# H3 I# X1 V, p different from an overloaded transistor stage.# s0 P5 G9 S- ]/ ~0 z
The “Gain” control adjusts a gentle overload while the odd-harmonics content
1 E* g: O7 X4 h7 }" q can be adjusted with the “Clip” control.
8 ^/ x. Z* [- w2 S; J c' E' j[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24+ P$ @* M/ y3 X7 W
dBu FS.# O: |; B9 J$ z5 C9 B
[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the% E1 K l' R0 @, z8 D
desired channel.! ]4 \3 p- {: X) q! Q/ L6 M
The “VALVE” LED is on when the Valve Dignifier stage is active.
$ x4 f& @5 O9 \2 { R, B[9] INSERT INSERT function.3 _) l# T( x* D
First key pressure: INSERT POST VALVE, the Insert Send is tapped after
& Y7 P( o$ Z7 e# H8 }, J9 W W the valve stage (display: “INS”); the Insert Return is directly fed to the Line; W3 ~# d/ W) i5 P6 R* K# H4 p# j
and AES/EBU outputs./ O% V/ Z$ v8 t
Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before: }4 m7 p7 x A0 f' V: X" ~/ m( P
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via+ Z6 F+ I; z8 u
the valve dignifier stage to the Line and AES/EBU outputs.
3 h; o" u: `1 W- Z Third pressure: INSERT OFF, the input signal is fed via the valve dignifier
6 z% l1 C' o F stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
5 [. n# `( m& ]3 \/ r' r( } receives this signal; display: none).$ K9 Y$ C3 y! [
Insert Send and Insert Return are electronically balanced and equipped with
& q6 r" H1 i! i& ~! e' d XLR connectors.4 m0 e5 j' A! y/ W
[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or0 G( X$ U% Z0 f1 B) [
ADAT digital interfaces. Each input channel can be switched to one of the$ K9 H: p9 ^: e+ \
channels 1...8 of the multichannel interface. If desired, also a mono mix is
7 G5 b9 d' X: e0 I4 \ possible by selecting the same output channel for both input channels./ |3 h1 {: p: V
[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone1 v* m0 s3 ^/ w; Q
channel.
5 X X6 J+ z, [; S0 @( @ Can be operated only if the input gain selector is in Mic position. The
: x2 L1 Z ?, @) G3 Q+ I/ Z setting remains stored when switching over to a line gain setting.
7 K/ X( c7 t5 e[12] Activates the high pass filter on the microphone inputs of the desired channel.
- q# Y4 T0 N' `# c. E; t" Y# y Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
0 ~: Z0 s0 F/ `/ \0 M5 P Can be operated only if the input gain selector is in Mic position. The
& m7 Q3 k I, c5 W. i% |/ q0 o setting remains stored when switching over to a line gain setting.' o4 i/ R1 q, {0 I; d
[13] Ø Toggle key to activate the phase reverse switch of the desired channel.) t9 s5 w! h' W: G7 @0 r' N
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:
# p. |& w4 h! p “20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
0 | n; O7 \! I0 T$ X/ P# P7 I" s8 j Noise Shaping (display: “16NS”) can be selected.
5 }7 S) p8 e) b% r! x# k. F( i[15] SYNC Selects the synchronization source for the unit. Possible selections are:2 l' g4 B( z# Z% ?0 p; a) U0 H* N
INT 48 Internal quartz reference, 48 kHz% K$ }8 c9 v: j2 `
INT 44 Internal quartz reference, 44.1 kHz
* G! P/ V1 e# p" W( P% b, k& O* K WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
$ A* J! }/ m: e, R1 e% M& Q4 | AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized)2 |- o% s% L0 P3 j5 A
AUTO Selects sources automatically in the sequence AES-WCLK-INT
# b4 g- Z1 J9 I VAR Indication only, active if the external source frequency deviates from 48 or* Q! F* {, |1 f/ d. O6 e
44.1 kHz for more than approx. ±3 %.! B9 h- y* K6 g' A
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –# d" P4 N5 u/ z3 y+ J
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
( F8 \: q* t* r7 w8 g8 N* x3 h[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce
2 D- o; ]' Y- ^* r( h the danger of overloading the A/D converter with short signal peaks (if( @" A& ^& J3 C/ X
active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
# p7 W0 R6 Z1 ?$ [& B1 u, T- w5 I allowing for approx. 6 dB reserve before hard clipping occurs$ `' z0 q6 o: g# f
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