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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

6 U/ _" {' a, e3 c! D7 [ 客户要求如下,如果哪家工厂可以做,请和我联系
% b5 l0 [4 T8 O; ~! ]> The application that we have in mind is similar to others that we commonly
8 _7 T: k1 Q& Q0 r _2 \" Q> have. If we were to pay for FCC approval, we would want to use the modem
$ K/ X2 J: i1 X > units in all similar applications under the same approval number.
$ ~. Q9 h! m2 |1 B; F- C> Therefore, we would like to be able to configure the units to a specific
. l* M/ @' s7 D1 v > application. For the business that we do, this approach will yield more
( q& B/ x& K$ m$ i9 V" m. s% _> sales based on the same product and approval. We are interested in the
0 D. W" B' M! X* d) ~$ {" D> following specifications:
3 Q' P2 M, T! \6 q0 b>
2 V0 G9 \3 ]5 Y/ R- t> - 2 inputs at the Transmitter with three possibilities;
( v7 I1 x7 q# V! d> 2 analog
( ?/ i% O/ y% }' N: E9 I> 2 digital
p3 A2 d6 t% r+ |+ L/ t( a9 m5 q> 1 analog and 1 digital
/ V+ }% s! A3 N" {! c& V" w: g) x>
; P' m j* e' V> - 2 outputs at the Receiver with three possibilities to match inputs
8 Y* j- _% o" b1 S, y >
& ]9 w1 P$ R' x l8 S5 d: F' @! j> - Ability to configure/define analog Transmitter input ranges through
! I: w+ z/ O% S2 H0 U > simple programming method to correspond with full-range analog Receiver
' O# `# r3 b* m; B2 | > outputs (0 - full voltage).
7 Z' c1 U& b9 E. I# H( |>
0 \( m, i' k! ~+ r6 n- P5 r > - Ability to configure and set sample rates for the inputs.
! B1 {8 n2 |( n>
" W# ^: ^! r; N! v# o- @6 D> - Digital output on Transmitter that turns on during the sampling period.
9 z% ]/ |% O! \- j4 Q. v4 v1 g >
: v! V4 m$ o2 P ?4 C1 g: E> - Ability to configure a power saving Sleep Mode in the Transmitter by
7 z0 c5 [! L0 z0 o" w& o> both software control and input hardware control.
% ^/ Q) g( R" v7 H5 a>
' t% a# G1 r) ?( y, j. S) z$ _) p9 Z2 Q > In order to configure the units, we would need a way to make the
9 v+ k/ z/ ~3 e5 g8 I > settings. This would preferably be from a computer terminal so that
& u f3 W! l$ P5 v) M2 E% R# n$ }> configurations can be saved or easily duplicated for production volumes.
2 V9 X, @1 Z, Z+ M2 ~> The units should be small and compact with shielding, and able to mount
7 L5 v; n5 B( E5 R1 x; G6 z/ g5 I2 _ > to a printed circuit board with header connector.
7 u& ~- x i. N q0 l9 Z>
9 Z3 P U- |$ u1 `1 m t# T> At this time, we are interested in samples of a pair of modems that
& q! W# ]; Q: C1 u> might be similar to this proposed system. We do not expect that you
$ {: D. t" O5 v# l* e> provide all of these specifications at this time. I can describe our
0 v: {* P; i' z0 j > immediate application needs in the next email if this project is of
- q! E5 E3 V5 c, f- A& \, I> interest to you. Perhaps you can make the samples by those
' U& Y7 D& {+ y) D" ?% T> specifications. This will allow us to test your radios before we move
0 M6 q6 Z' p- z8 h" M& a > forward. We are interested in your 900MHz radio to start.
$ b8 }/ `- ^; p9 g h* _) i
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