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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

# s! v, Q+ |5 x1 O' a5 `' ~客户要求如下,如果哪家工厂可以做,请和我联系
6 I( m. f( Q% M/ t6 W6 v> The application that we have in mind is similar to others that we commonly
' R4 G- `( d( G; R7 g0 ?> have. If we were to pay for FCC approval, we would want to use the modem
6 h L0 ~2 X8 F! `, D2 r> units in all similar applications under the same approval number.
9 }9 C% s1 t% [6 ~* H" F3 } > Therefore, we would like to be able to configure the units to a specific
, F8 [5 H% B0 y7 d% M3 p> application. For the business that we do, this approach will yield more
/ v: }( C5 ^: T0 v* [5 e > sales based on the same product and approval. We are interested in the
- ^7 V6 O9 T* J! } > following specifications:
" ~6 A- a2 V- ^8 k$ q1 } >
0 y; X* G" {# l. W > - 2 inputs at the Transmitter with three possibilities;
7 \* Q6 h) f! y* X4 S > 2 analog
8 @/ I6 J6 }% Q) f" u> 2 digital
/ q& Z$ r2 y( ?, y > 1 analog and 1 digital
4 ]$ S' V6 K: N$ U7 S: J' F& N>
7 [ R' x( v+ m3 J' O) e# `> - 2 outputs at the Receiver with three possibilities to match inputs
- L) H7 c( T6 u3 |& v( _: [>
' x' O' Y1 m V. r8 W> - Ability to configure/define analog Transmitter input ranges through
' M2 i' q. W4 k8 b5 C* Y+ B6 Y > simple programming method to correspond with full-range analog Receiver
. O5 ^9 a2 T2 s ^0 P; W2 g> outputs (0 - full voltage).
* X4 n1 q0 P8 \9 z5 H l >
& [9 ?2 v8 P. Z) M+ l% U- h > - Ability to configure and set sample rates for the inputs.
1 L, E# ~+ W: Q7 b) |% a. j' |>
G8 b) D5 C& p g$ i# e> - Digital output on Transmitter that turns on during the sampling period.
, q* I2 o, n5 W; X* { >
/ _" G; N. i+ ^, _+ g> - Ability to configure a power saving Sleep Mode in the Transmitter by
) R7 y1 h5 a7 g; l > both software control and input hardware control.
F) j! `+ b: W' O6 R >
. A8 @* I5 d, G' Q5 \8 K, R g> In order to configure the units, we would need a way to make the
3 W# N) \( ? {# l7 p) R> settings. This would preferably be from a computer terminal so that
6 T- q2 a+ D# u8 { > configurations can be saved or easily duplicated for production volumes.
( Z4 I% [% L3 l- z4 q8 d > The units should be small and compact with shielding, and able to mount
3 M; j# n7 p; s; d/ ]( I* G> to a printed circuit board with header connector.
% p9 c" y' n# n1 H& ^9 U1 k# j>
" I0 `3 d, u4 C1 F. t > At this time, we are interested in samples of a pair of modems that
& N3 Y# V( ^: F g% D5 O1 w! J> might be similar to this proposed system. We do not expect that you
4 {9 W: h4 v5 T > provide all of these specifications at this time. I can describe our
0 ?: O) Y5 u" R> immediate application needs in the next email if this project is of
; f2 Z4 _$ H- i > interest to you. Perhaps you can make the samples by those
. d9 K' [* }. G6 X& l" B > specifications. This will allow us to test your radios before we move
5 Q' e2 ^ s7 C> forward. We are interested in your 900MHz radio to start.
( O/ D; g7 C6 M& L. f, n- N6 c
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