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SA-138 RF coupler

SA-138 is an RF coupler for GSM RF testing. It is used together with

SS-46 and SS-62.

The following table shows attenuations from the antenna pads of the

mobile terminal to the SMA connectors of SA-138:

•

Band Tuning

channel

Attenuation RX

(dB)

Attenuation

TX(dB)

GSM850 128 8 12.8

190 8 12

251 8 10.7

GSM900 38 8 9.6

124 8 8.7

975 9 11.5

GSM1800

512 9

12.6(RM-378);

11.6(RM-379)

698

9(RM-378); 10

(RM-379)

12.3(RM-378);

11.2(RM-379)

885

9(RM-378); 10

(RM-379)

11.3(RM-378);

10.8(RM-379)

GSM1900

512

10(RM-378); 11

(RM-379)

9.7(RM-378);

10.5(RM-379)

661

10(RM-378); 11

(RM-379)

9.7(RM-378);

10.6(RM-379)

810 10

11.1(RM-378);

11.8(RM-379)

General devices

The table below gives a short overview of service devices that can be used for testing, error analysis, and

repair of product RM-378; RM-379. For the correct use of the service devices, and the best effort of workbench

setup, please refer to various concepts.

RM-378; RM-379

Service Devices and Service Concepts

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