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[寻求合作]音频传输模块,做出口

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安防幼儿园学生

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发表于 2007-5-27 20:29:37 | 显示全部楼层 |阅读模式

; e% n6 {# L F1 [客户要求如下,如果哪家工厂可以做,请和我联系
% Z& w# @# q! `6 W) ^ > The application that we have in mind is similar to others that we commonly
# f/ ]! G% T3 D1 |/ \ > have. If we were to pay for FCC approval, we would want to use the modem
5 V" \+ y7 w4 k> units in all similar applications under the same approval number.
0 b3 q& F$ b: w9 f> Therefore, we would like to be able to configure the units to a specific
0 d% P v4 | @( e2 [# C c> application. For the business that we do, this approach will yield more
/ K* I7 u7 {( I1 S: ?! m# z- ?" L > sales based on the same product and approval. We are interested in the
( h0 _ C& w1 N. e > following specifications:
$ Y3 l/ c, h/ b" O3 A >
( | a3 q' a3 U. O> - 2 inputs at the Transmitter with three possibilities;
5 \+ P! {4 \! i# c9 N% i, O* Y1 o$ j> 2 analog
$ A; L6 R) \) s8 w9 t7 U> 2 digital
& w) Z0 Y: T1 F$ @> 1 analog and 1 digital
8 B9 v, H, _7 t+ }>
) A) z- r. e9 u! V+ D- k4 e- A > - 2 outputs at the Receiver with three possibilities to match inputs
4 P, E3 _3 K5 T3 _ >
" J1 h% o7 f( W$ @ > - Ability to configure/define analog Transmitter input ranges through
. W3 j; U: v, F, t3 ~) C> simple programming method to correspond with full-range analog Receiver
& u5 f5 r* a5 y- t7 G* o> outputs (0 - full voltage).
) i: p) x. q& b7 \4 s i1 B >
! V2 O/ y' v! }4 `> - Ability to configure and set sample rates for the inputs.
& g j1 f* m+ e; m7 q" x3 h% T+ ]>
" l! r5 k/ N! @6 g9 }0 m$ L > - Digital output on Transmitter that turns on during the sampling period.
: I( R' @" W. o- I >
% f) Z# o' E0 Z> - Ability to configure a power saving Sleep Mode in the Transmitter by
( v& e9 B6 ?: W, T7 D* d> both software control and input hardware control.
; A9 ?9 N1 P6 p9 c! W! f >
& P. j2 X, |- p' \6 p$ F1 N> In order to configure the units, we would need a way to make the
: h/ F* c: K, r$ s# [! E > settings. This would preferably be from a computer terminal so that
# D( F0 A( o) o> configurations can be saved or easily duplicated for production volumes.
1 K4 j) |" S# E7 z0 }. Z$ ? > The units should be small and compact with shielding, and able to mount
' ?) |: p5 m) _9 Q. p > to a printed circuit board with header connector.
4 Z( m! ~/ l# K# y3 y( \5 z, K >
) M" O/ z; j& ]; y. a> At this time, we are interested in samples of a pair of modems that
% c1 u: L! ~) n > might be similar to this proposed system. We do not expect that you
B( w+ K) a Q( ^+ ~ > provide all of these specifications at this time. I can describe our
* E% n! w% x( X7 F& D5 W > immediate application needs in the next email if this project is of
8 l' `* ]* m+ G: y* @. H! |> interest to you. Perhaps you can make the samples by those
T& T' B! T& I: T2 J+ Y$ n6 i > specifications. This will allow us to test your radios before we move
1 a+ \/ C! q* E0 x! m6 I> forward. We are interested in your 900MHz radio to start.
4 E, V& R+ Q2 X0 r6 e
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