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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

8 E4 j4 x" T5 H. n( |客户要求如下,如果哪家工厂可以做,请和我联系
0 V% j4 p' q; z, k) t > The application that we have in mind is similar to others that we commonly
/ W* T$ w' \7 Y; V% i > have. If we were to pay for FCC approval, we would want to use the modem
$ h& a |4 T; u6 H( P# q: d > units in all similar applications under the same approval number.
' ]) Y* D3 D1 } > Therefore, we would like to be able to configure the units to a specific
1 C( M E% W- u% e e Q F > application. For the business that we do, this approach will yield more
5 s+ {% [* {! i, S > sales based on the same product and approval. We are interested in the
+ [; M3 R2 ]2 J9 @ > following specifications:
0 ~: R. t5 D* H7 L/ t* K6 w9 u >
" t: B' O4 {& G5 _; K > - 2 inputs at the Transmitter with three possibilities;
( p0 @* {1 X! C4 g& H- t> 2 analog
& v$ Q7 C2 V% ~. n% S* Z) ~ > 2 digital
, ~* D9 N2 o& \: O> 1 analog and 1 digital
' v$ H4 }( j! V) ]/ M$ a>
6 S- P# @( ^. ?; w+ `' M> - 2 outputs at the Receiver with three possibilities to match inputs
" n: ?( p0 }4 O4 c; ?7 x >
* m( n" L/ @" D0 Z > - Ability to configure/define analog Transmitter input ranges through
- k$ i, U* ?$ N6 L1 c( Z: O; s> simple programming method to correspond with full-range analog Receiver
$ a- X& r" [5 {( Q' Y+ h5 N > outputs (0 - full voltage).
. t1 Y! a3 H% W# Q% [>
3 _- w' S( g* [0 a1 w. E > - Ability to configure and set sample rates for the inputs.
( t( d8 |4 a. c1 h. {! a* y. j) p >
) U; m: B- E0 E8 q; o6 a$ d# g# |8 U > - Digital output on Transmitter that turns on during the sampling period.
9 Y0 A v E# B K+ r>
6 S8 \* s: e1 ?( S$ y1 T! E6 Y> - Ability to configure a power saving Sleep Mode in the Transmitter by
' }0 B' U& Y0 T4 J0 S > both software control and input hardware control.
- D& O5 O2 T+ W0 c' q" u/ L3 B# D >
& i( S+ e1 m- B$ W2 Q' S > In order to configure the units, we would need a way to make the
7 V' |# V; k* H9 ]7 ?7 ^> settings. This would preferably be from a computer terminal so that
6 i. h2 G3 `7 M a3 o% p' s > configurations can be saved or easily duplicated for production volumes.
^) p) N& i: x4 \8 z6 C > The units should be small and compact with shielding, and able to mount
! h7 Q8 _, i5 `1 Q( V > to a printed circuit board with header connector.
8 u1 l. V: X# r( E>
" |% V# l8 N1 Q> At this time, we are interested in samples of a pair of modems that
) ~" P' S V6 v4 n1 }! C> might be similar to this proposed system. We do not expect that you
/ y5 S3 O6 K" f3 H1 ]6 E4 | > provide all of these specifications at this time. I can describe our
- @2 d6 D' I6 x7 ?$ H, \, T3 G > immediate application needs in the next email if this project is of
" s" h. z, A) P: n> interest to you. Perhaps you can make the samples by those
) x" v3 m1 D5 a Z > specifications. This will allow us to test your radios before we move
5 B$ r7 x( j \$ w8 Y3 Z. O: y; \ > forward. We are interested in your 900MHz radio to start.
3 [( E: W* x$ }. ^
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