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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. @1 [( l4 d9 J; c u
[1] POWER Switches the unit on or off. The unit is ready to operate with the factory
. Q- W' ]; D; S default settings. The subsequent settings remain stored in a Flash EPROM7 \& W# e {" x* A; X0 d2 ~
after switching the unit off (unit contains no battery).
- x- B5 }- f9 i+ o0 p; p[2] Input dBu FS Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF position
+ B8 k0 l7 w ]6 x$ l" O. x5 N between microphone and line sensitivity setting ranges.
0 @/ ?) l/ k L" U' h+ E) I Mic: Range –40...+20 dBu" X) D& B# v- b- b" \) A9 }
Line: Range +14 dBu, +24 dBu
( H( Q, `' \( s m2 m, u: Y[3] Fine Gain Potentiometer for fine input sensitivity setting.4 I7 R! b- D! r. y- G: y% y* n# ]
Range of additional gain: 0...+15 dB.
% L& t9 ^. d9 F9 U" T d Headroom: The input sensitivity setting is calibrated in dBu per full-scale. It represents
6 T9 }4 s% B* C6 E/ `. S6 j the dBu value of an analog input signal which causes a full-scale output of3 q$ ?! S% S, f2 m2 M- e h4 j
the A/D converter.. |9 g- Q; P5 f8 }( E1 {0 r; Z
Example: A studio works with +4 dBu nominal analog level and uses 12 dB headroom;
- {' e* v4 L5 ]8 x the peak level is therefore +16 dBu. The “Input dBu FS” rotary7 H2 P6 P: l3 ~1 W! |
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the “Fine
; [* r8 t, L( N }3 |4 t Gain” potentiometer [3] increases the gain by 8 dB.7 ]& _3 J# o* S; Z" |( | s
[4]...[6] Valve Dignifier Operative only if the function VALVE [8] is active.8 X3 X) ?" l! }* \" p4 @5 `
[4] Bass Warmth The sound of low frequencies becomes rounder; bass has more depth; vocals
0 ]% D L, I, |" q8 r5 E# z/ r have more body; percussive instruments are less aggressive.) Y5 `4 u' ?6 v7 ~4 f
The group delay behaviour due to AC coupling of the stages is different in
, |1 m- {6 {7 W: \. R tube amplifiers.
% Q! H- E8 A% c3 H- h The “Bass Warmth” control allows to select the frequency range2 F9 U; Z: m5 i
(10...200 Hz) within which the effect is active.4 [; ^4 g+ `. \ d1 A: c3 d
[5] Angel Zoom Adds transparency and clarity to vocals; emphasizes the solo instruments.
# c4 H) G- U$ y; [" J, V' }- b; Y Valve amps have a characteristic response, mid-frequency harmonic content
6 w# m3 z* B0 _ X5 s is emphasized.% q# C x! c6 h3 }/ h# u
[6] Valve Drive Gain/Clip Tight, full sound; the sound will be harder/softer.7 X" T, v& R: @" K$ @% g
The harmonics spectrum of a delicately overloaded valve amplifier is completely8 `' k$ [% P* q8 E9 `8 ^
different from an overloaded transistor stage.
3 d, x/ a4 p, P% q( K; }4 s0 O The “Gain” control adjusts a gentle overload while the odd-harmonics content( N8 J, |* S0 W9 k# y
can be adjusted with the “Clip” control.4 u; S9 u T) ^! y/ _3 l4 \
[7] Line Out Output level setting, calibrated in dBu per full scale (dBu FS). Range: 4...24
, }# y0 c( E2 r" g dBu FS.
, }+ A* }3 K$ [; E q- Q( f[8] VALVE Toggle key for inserting the Valve Dignifier stage into the audio path of the1 A3 U3 F8 K6 l$ ]7 g ]* [ K4 {
desired channel.
2 \+ X! n6 Y& N; ~! P The “VALVE” LED is on when the Valve Dignifier stage is active.$ W2 |$ P+ d5 D9 f4 W
[9] INSERT INSERT function.0 k2 B9 l4 n4 H; t( H$ i; N
First key pressure: INSERT POST VALVE, the Insert Send is tapped after6 N( N2 f# a9 ]8 B/ |# i; I
the valve stage (display: “INS”); the Insert Return is directly fed to the Line, c" D! }6 e: D* `! w
and AES/EBU outputs.
7 B g0 D5 K! t Second key pressure: INSERT PRE VALVE, the Insert Send is tapped before; z7 Q% ~) {& o
the valve stage (display: “INS” and “PRE”); the Insert Return is fed via
+ k+ x. H3 D9 ? the valve dignifier stage to the Line and AES/EBU outputs.
j9 m- Q" [* w* p8 {+ w c5 I Third pressure: INSERT OFF, the input signal is fed via the valve dignifier1 H2 G3 L, W# f! Y
stage (if active) to the Line and AES/EBU outputs (also the Insert Send output
& L! C( V7 ?- S% S! Y+ T" a& i' A receives this signal; display: none).9 b7 M8 Q6 P ]/ g- U
Insert Send and Insert Return are electronically balanced and equipped with
5 n. ~( C; z- E9 R) u+ w- P XLR connectors.
; z! c# X# z- Q[10] ROUTING Selector for the channel routing when using one of the (optional) TDIF or
8 R1 f7 W* z0 k' Q, U( P l ADAT digital interfaces. Each input channel can be switched to one of the
2 a6 t5 g: {' h, w! K channels 1...8 of the multichannel interface. If desired, also a mono mix is
9 d0 r u2 m/ Q possible by selecting the same output channel for both input channels.
# c; L6 ]+ Q1 ]) J( `[11] 48 V Toggle key to activate the 48 V phantom power supply for the desired microphone
, q& j" @- P( W% p7 A0 V* l channel.9 B8 z; t, K2 }) S& j
Can be operated only if the input gain selector is in Mic position. The$ l$ A8 S! R0 I) n9 ?, a7 y
setting remains stored when switching over to a line gain setting.
, [% g. E% `5 x. w% Y" B8 ^[12] Activates the high pass filter on the microphone inputs of the desired channel.5 G+ y8 a! Q+ Q) i, r" Z
Cut-off frequency (–3 dB point) 75 Hz, slope 12 dB/octave.
: z( L/ L1 J, s% U. t Can be operated only if the input gain selector is in Mic position. The
& G& p. ~& K! T1 U setting remains stored when switching over to a line gain setting.7 Y7 B; H7 k g' h; b8 x1 I/ N* {
[13] Ø Toggle key to activate the phase reverse switch of the desired channel., {% i# `, B; T
[14] MODE Toggle key to select the word length of the DIGITAL OUTput. 20 bit (display:: k* G5 a. N9 q
“20BIT”), 16 bit with dithering (display: “16DI”), or 16 bit with
. o9 C$ {! j+ A2 k' _ Noise Shaping (display: “16NS”) can be selected.
' I6 u, s4 P1 F, y9 d$ ^1 K% k[15] SYNC Selects the synchronization source for the unit. Possible selections are:
1 r" ]) K) Q, m7 Z# |: w* c$ x INT 48 Internal quartz reference, 48 kHz
, C s) ^& j& [! a3 W5 ?5 B INT 44 Internal quartz reference, 44.1 kHz: v6 Y5 U3 z) z7 N, D5 N) S3 D
WCLK Selects external Word Clock Sync (flashes if no valid input signal is recognized)
e# ~) e, a( I1 K0 ?& f( z AES Selects external AES/EBU Sync (flashes if no valid input signal is recognized); B. f4 D2 D6 a+ T
AUTO Selects sources automatically in the sequence AES-WCLK-INT5 K3 m9 _2 @" E. G
VAR Indication only, active if the external source frequency deviates from 48 or; G0 H4 Q: ~% ?8 k8 ]
44.1 kHz for more than approx. ±3 %.8 u) x8 S$ Z8 y8 ~0 T
[16] PEAK HOLD Toggle key to select the PEAK HOLD function for the PPM level meters –" @, A8 Q2 l# a+ q% A# h' {
either permanently (display: “HOLD”), or with automatic reset after approx. 2 s.
7 L9 k7 x5 m" r3 q# f x4 d6 R9 D[17] SOFT CLIP Toggle key to activate the SOFT CLIP function in the analog paths to reduce% \- ?5 w. I* G3 [% _0 K
the danger of overloading the A/D converter with short signal peaks (if
/ L/ F6 { I7 {* T active, the display indicates “SOFT”). Threshold at 3 dB below full-scale,
+ \' `. ^ ?* L, u9 v e( |" n) B allowing for approx. 6 dB reserve before hard clipping occurs$ h3 j+ `! T& f4 p& E, a
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