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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

" d% K9 w) P, A, V, L- d$ Z! I 客户要求如下,如果哪家工厂可以做,请和我联系
3 m6 o j/ v4 Z; y" h3 W5 X > The application that we have in mind is similar to others that we commonly
7 T% g g- c- t/ J9 C! ]+ c> have. If we were to pay for FCC approval, we would want to use the modem
3 A) K5 a1 C8 ?8 s, B' n2 e> units in all similar applications under the same approval number.
2 i) |+ Y" d u# L+ U- @1 [* r > Therefore, we would like to be able to configure the units to a specific
8 E4 S4 o+ {4 V, u2 i! C> application. For the business that we do, this approach will yield more
4 R+ \3 `2 q( g: r> sales based on the same product and approval. We are interested in the
& m' o4 I- X& g* N1 `4 k) q> following specifications:
3 |* y! G, S* B! }6 ^& U+ t4 D>
+ x3 N' d9 F! X0 w$ T" `) Y1 l> - 2 inputs at the Transmitter with three possibilities;
! |; w% s1 n* M0 M- Q% w4 j' R4 f) | > 2 analog
% J: \# H" ]2 j> 2 digital
; x8 N. O8 K' M6 L. J > 1 analog and 1 digital
5 Q3 K% O' {0 K>
# P, b- p# a- X4 v9 W> - 2 outputs at the Receiver with three possibilities to match inputs
Y8 T7 E2 ]$ { w>
9 G; i: Q% p8 ~! Y+ Z' E > - Ability to configure/define analog Transmitter input ranges through
T+ W, N. \6 L7 r> simple programming method to correspond with full-range analog Receiver
+ T+ \, U' c8 n& L' M2 |& Q> outputs (0 - full voltage).
* O* G$ X; i; X9 s/ Q>
0 J, F( D9 V. C( K, G" L> - Ability to configure and set sample rates for the inputs.
4 i& y% z7 i* C* @% o/ r( j5 d! o>
6 f2 j2 e+ W: M9 k" B. t7 k3 ]1 n; V > - Digital output on Transmitter that turns on during the sampling period.
6 _, R9 d3 \, z4 ]>
* I9 W( d7 w9 _, d$ y> - Ability to configure a power saving Sleep Mode in the Transmitter by
0 s1 b! d$ }, F> both software control and input hardware control.
# Q% ]* m4 v0 C N/ s>
! x3 o" m+ Q. P+ t( y" K > In order to configure the units, we would need a way to make the
, _$ |7 i: R1 A2 ~( p* g> settings. This would preferably be from a computer terminal so that
5 U ?, u- C% ?( J > configurations can be saved or easily duplicated for production volumes.
$ ]' ^5 y7 ~/ J5 m9 j2 _1 H5 v> The units should be small and compact with shielding, and able to mount
4 g9 J2 r$ F' h! V1 k- X > to a printed circuit board with header connector.
* f- }. z" B) w1 h# \' ~>
( I" p0 p& E, d7 @ K8 c, f, o > At this time, we are interested in samples of a pair of modems that
8 D0 d/ a) ~6 B4 O7 Z > might be similar to this proposed system. We do not expect that you
|/ f, n6 o- @+ R, a > provide all of these specifications at this time. I can describe our
0 b! s, e. n( E" g> immediate application needs in the next email if this project is of
9 a& @% e) a) e7 }8 P& ?3 _8 v > interest to you. Perhaps you can make the samples by those
+ u# E+ F* u# q4 D > specifications. This will allow us to test your radios before we move
7 } z; E+ J, u6 W& O- H% L> forward. We are interested in your 900MHz radio to start.
' `& h7 E7 y2 Z2 ]$ k: q* o
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