CB-ACC-36【PDF 48/58 页】ANTENNA 1/2WV 2.4GHZ 10CM RPSMA

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Version 1.17 2011-09

Appendix A - Application Notes

Usually only a subset of the available functionality is of interest to the designer. In addition,

depending on the host system, the electrical interface can be designed in many ways. The

designer can use the step-by-step guide in this chapter as an aid in the design process.

A.1 Step-by-Step Guide

Table 20: Step-by-step guide with Yes and No answers.

Question

Yes

Are you going to integrate the OEM

Serial Port Adapter in a metal enclo-

sure?

The internal antenna models

cannot be used. Use the

OEMSPA311x or OEMSPA331x.

You are free to choose

between the products. The

internal antenna models

are lower cost and are

easier to design-in. How-

ever, an external antenna

could give better range.

Do you wish to use logic level when

communicating with the OEM Serial

Port Adapter?

See section A.2.2.1 for electrical

design.

See section A.2.2.2 -

A.2.2.3 for electrical de-

sign.

Do you want to use RS232 as the

physical serial interface?

See section A.2.2.2 for electrical

design.

Go on to next point.

Do you want to use RS485 or RS422

as the physical serial interface?

See section A.2.2.3 - A.2.2.4 for

electrical design.

Go on to next point.

Is low power consumption important? The power consumption can be

reduced by enabling the stop

mode, see Table 10. The stop

mode is controlled with the DSR

pin, see section 2.5. The power

consumption is optimized with

3.2-3.3 V supply voltage.

Go on to next point.

Do you wish to connect LEDs to the

OEM Serial Port Adapter?

See section A.2.3 for design

examples for connecting the

LEDs.

Go on to next point.

Do you want to detect the status of

the module with a controller?

See Chapter 3, Table 14 for sta-

tus detection and section A.2.3

for electrical design.

Go on to next point.

Do you wish to utilize the restore

switch?

See section A.2.3.2 for electrical

design.

Go on to next point.

Do you wish to utilize the Function

switch (Connect on external sig-

nal)?

See section A.2.3.4 for electrical

design.

Go on to next point.

Do you want to manually reset the

module?

See section A.2.4 for electrical

design. Use a double row con-

nector. See section 5.2.1.2.

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