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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

! } G5 _4 q: M( ?5 `& Z 客户要求如下,如果哪家工厂可以做,请和我联系
# k, u0 A8 v7 V> The application that we have in mind is similar to others that we commonly
; b. r8 S" c, R1 h. w9 j3 c > have. If we were to pay for FCC approval, we would want to use the modem
9 L0 x+ Q% E& v. i# U( B > units in all similar applications under the same approval number.
* k4 o: X* r9 P! `* X> Therefore, we would like to be able to configure the units to a specific
8 ~5 u+ `- M" c: \% u+ ~ > application. For the business that we do, this approach will yield more
: k0 p- z* ?2 N. G > sales based on the same product and approval. We are interested in the
! `( C% t1 N- m( g > following specifications:
) v8 S& ?! l; n5 u1 Q>
3 q" w1 ^2 g+ K# C. H> - 2 inputs at the Transmitter with three possibilities;
- K/ o1 _# Q6 n > 2 analog
$ o. ?! d6 @2 `6 g5 I. N; D > 2 digital
+ y m" M3 } e. F8 L+ o> 1 analog and 1 digital
^# G* }4 \0 J$ N >
& V0 h; u( h* Q" Y; ^ > - 2 outputs at the Receiver with three possibilities to match inputs
# X; J, n1 r+ z2 [- M9 Q# u>
: Y! U$ Y5 a1 ]4 P; p5 T, D( Y > - Ability to configure/define analog Transmitter input ranges through
' O4 L, P( D' m* A > simple programming method to correspond with full-range analog Receiver
+ G' l0 {! U9 U4 D/ } > outputs (0 - full voltage).
1 h$ }% B8 b8 G6 |5 ^ >
$ _2 \! n( G. \> - Ability to configure and set sample rates for the inputs.
' U% I' o# k: s& ~>
9 b4 `3 F3 k3 J% b7 X/ S3 D > - Digital output on Transmitter that turns on during the sampling period.
- f* m% d: I2 o7 N$ x >
6 ]3 ^' t, V t. ], E' l ~' G: R' z9 J> - Ability to configure a power saving Sleep Mode in the Transmitter by
9 I5 C, T/ T, \1 T) }" s. G# I> both software control and input hardware control.
& M6 h: @, |6 U6 g>
: F! C. O7 ]. O5 \/ k/ u# ] > In order to configure the units, we would need a way to make the
6 K6 t1 R% `' J6 x> settings. This would preferably be from a computer terminal so that
1 Z5 p; \$ z1 P > configurations can be saved or easily duplicated for production volumes.
% f0 k! G$ V/ y' Y > The units should be small and compact with shielding, and able to mount
7 u. y+ f. f, x& x; l > to a printed circuit board with header connector.
9 L4 \/ F5 X6 x >
) V- D( G% Z I; Z3 v( S& V3 K% q > At this time, we are interested in samples of a pair of modems that
' v( b" }. H, {> might be similar to this proposed system. We do not expect that you
, g9 ~/ n# J% _( A8 b > provide all of these specifications at this time. I can describe our
' T- B: v6 S6 o7 d > immediate application needs in the next email if this project is of
5 N% U+ _" F! d> interest to you. Perhaps you can make the samples by those
, i9 W8 V B) k8 @5 A; s > specifications. This will allow us to test your radios before we move
9 e0 H9 H, T- |+ k> forward. We are interested in your 900MHz radio to start.
+ O! ]/ [6 C0 w3 D/ @* c1 o
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