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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

3 c4 m( Q" j6 P8 I, t客户要求如下,如果哪家工厂可以做,请和我联系
9 l$ @; M! W* P# g4 ?* i > The application that we have in mind is similar to others that we commonly
5 y" G: @) z7 n9 u/ K6 O( v# Q > have. If we were to pay for FCC approval, we would want to use the modem
4 M4 `9 P! o/ N* \ L > units in all similar applications under the same approval number.
: x$ R8 q! f. E3 w. K! z4 [> Therefore, we would like to be able to configure the units to a specific
# ?6 f" A0 f5 o4 E5 x* m1 [2 X> application. For the business that we do, this approach will yield more
a3 b$ S0 K9 g9 ~8 q! ?6 ?4 O> sales based on the same product and approval. We are interested in the
: Y$ o( N( ?* {7 S/ V > following specifications:
! {) V& I# o4 L& u1 I >
+ X4 t0 ~) P2 i' t: m0 }7 {3 y> - 2 inputs at the Transmitter with three possibilities;
( c1 i' g; g3 l ~7 _; q > 2 analog
2 G, j D4 o5 Y0 t! X' g, L/ p8 t( [> 2 digital
9 V( p0 Z8 Q+ M/ H> 1 analog and 1 digital
4 F4 C' _- G N9 [& c% Y >
* r) Z1 s1 `7 f C2 \ > - 2 outputs at the Receiver with three possibilities to match inputs
2 A, U+ E" P& ~, w: D, U: z>
$ T: D4 J5 D. G3 c% f9 L > - Ability to configure/define analog Transmitter input ranges through
- L$ i1 Q* y( S$ g5 W! v3 t" P> simple programming method to correspond with full-range analog Receiver
# _- i' t! S3 E5 i. m > outputs (0 - full voltage).
4 H! l5 q3 q( b+ M+ H/ D- C( I>
4 e0 |) `0 a, T" i# {! A. w > - Ability to configure and set sample rates for the inputs.
3 y4 a F/ U" W( c! \" A3 ^6 \& A >
" O2 w" ]& ^: [3 A; \6 C Y> - Digital output on Transmitter that turns on during the sampling period.
C1 i: N. t" n$ l, n >
6 K6 O: u, U, q& o6 |1 f% Q$ Z > - Ability to configure a power saving Sleep Mode in the Transmitter by
( @" e. {- Q& J> both software control and input hardware control.
- w: {8 Z# O. ~ m>
' g5 G0 j8 H+ H6 r, `3 r! Q> In order to configure the units, we would need a way to make the
4 P! d) ?2 r' |& t- @5 t$ t > settings. This would preferably be from a computer terminal so that
( {2 A* d$ ?" Z; N% x; J& l > configurations can be saved or easily duplicated for production volumes.
i& e. o# Y% z2 l+ J3 @> The units should be small and compact with shielding, and able to mount
' P+ g8 \4 D% S1 o9 c> to a printed circuit board with header connector.
8 i/ R! C* e( e5 ^' V >
0 {: G8 l3 {8 Z8 R > At this time, we are interested in samples of a pair of modems that
$ Y( E) s) Z9 x c2 S. `> might be similar to this proposed system. We do not expect that you
& X& o- j6 ~. {$ ?4 e+ G1 N$ i> provide all of these specifications at this time. I can describe our
0 e' K+ `$ u5 |> immediate application needs in the next email if this project is of
3 ~& r4 ^9 W2 G; y% V > interest to you. Perhaps you can make the samples by those
# B5 I: l, ^6 s. }% }/ P6 C0 V5 |2 G > specifications. This will allow us to test your radios before we move
7 K' O1 ~1 V3 n$ F2 C> forward. We are interested in your 900MHz radio to start.
. V- t, P$ w6 i9 x, v1 i
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