This thesis for the Master of Science degree was performed at Solectron Corporation in Norrköping. The background for the thesis was a need to develop and build two test fixtures to automatize testing and adjusting of transmitter modules (TX-fixture) and receiver modules (RX-fixture) which are head devices in DWDM-systems. The basic elements for the test fixtures are: Test board, switch board and DC/DC board. The main function of the test board is to handle communication between the transmitter and receiver modules and supply voltage to these modules. The test board was insufficient and modified with a microprocessor to handle the communication between the PC and the receiver module. There are two connectors (NexLev) on test board to connect the receiver and transmitter modules. The switchboard has been used in fixtures for testing and adjusting both the receiver and transmitter modules for data rate up to 2.5 Gbit/s. This board has been modified for use in new fixtures for data rate up to 10Gbit/s. Because the power consumption of the test module will be measured with the amperemeter in the power supply, the reference module and the test module cannot be supplied by the same power supply. Because of high cost and the fact that no current is measured it is unacceptable to use a power supply to feed the reference module. The solution is to build a DC/DC board. Because the NexLev connector has a durability of 30-40 times it was necessary to have a connector with higher durability. This connector is located between the test board and the test module. Without this connector the project will not be profitable for the company. Some parts in RX- and TX-fixture have been used in older versions of fixtures for data rate up to 2.5Gbit/s. These parts have been updated for the new test demands of the new fixtures.

<p>This thesis for the Master of Science degree was performed at Solectron Corporation in Norrköping. The background for the thesis was a need to develop and build two test fixtures to automatize testing and adjusting of transmitter modules (TX-fixture) and receiver modules (RX-fixture) which are head devices in DWDM-systems. The basic elements for the test fixtures are: Test board, switch board and DC/DC board. </p><p>The main function of the test board is to handle communication between the transmitter and receiver modules and supply voltage to these modules. The test board was insufficient and modified with a microprocessor to handle the communication between the PC and the receiver module. There are two connectors (NexLev) on test board to connect the receiver and transmitter modules. </p><p>The switchboard has been used in fixtures for testing and adjusting both the receiver and transmitter modules for data rate up to 2.5 Gbit/s. This board has been modified for use in new fixtures for data rate up to 10Gbit/s. </p><p>Because the power consumption of the test module will be measured with the amperemeter in the power supply, the reference module and the test module cannot be supplied by the same power supply. Because of high cost and the fact that no current is measured it is unacceptable to use a power supply to feed the reference module. The solution is to build a DC/DC board. </p><p>Because the NexLev connector has a durability of 30-40 times it was necessary to have a connector with higher durability. This connector is located between the test board and the test module. Without this connector the project will not be profitable for the company. </p><p>Some parts in RX- and TX-fixture have been used in older versions of fixtures for data rate up to 2.5Gbit/s. These parts have been updated for the new test demands of the new fixtures.</p>

<p>The project, Glowtest Fixture, has been carried out to and in collaboration with MSA Sordin</p><p>Ltd. MSA Sordin Ltd produces and sells ear protector and is at present a supplier on the</p><p>world market. Glowtest Fixture is a product for glow testing off detailed components in one</p><p>ear protector. MSA Sordin Ltd sends today away your products for testing what is an</p><p>expensive aspect in their development. The project's aim is to take forward a test equipment</p><p>that copes with those high nonplussed requirements and wishes that are required for an</p><p>approved physical execution.</p><p>Glowtest Fixture is a physical equipment that comes used stem glow physical off all detailed</p><p>components in one ear protector. Glowtest Fixture is entirely automated and implement the</p><p>test without some complicated manual elements. A test is implemented of only a button</p><p>print and can therefore be carried out of which employee that entire pc on MSA Sordin Ltd.</p><p>The fixture is a so called table mock‐up, small and smooth, and it that is needed in order to</p><p>start the fixture is a 220 volt levying. Therefore, a test can be carried out almost each as</p><p>entire pcs. When the test is performed will the product can to be set away.</p><p>When the test equipment is on it held the certain temperature stable within the interval in</p><p>order to a test will can to be implemented anytime. It that is required in order to implement</p><p>the test is a button print stem to afterwards check if it begins to glow on ear protectors.</p><p>Hands nothing with ear protectors is the test validated.</p><p>The result of the project is a test equipment that MSA Sordin Ltd can use itself of and that</p><p>also will decrease the costs for the company. Payback time for the product lies on a week</p><p>what does the fantastic profitable for MSA Sordin Ltd. This does the possible for the</p><p>company to can to implement more or less continuous physicals in order to check that their</p><p>products maintain highest quality.</p><p>The project work has been implemented according to so called dynamic development in</p><p>production. Aspects and tools that have had significant role in the development work has</p><p>been various shapes of idea embarrassing ring, mock‐up production, evaluation dice and</p><p>above all physicals of various kind.</p>

The project, Glowtest Fixture, has been carried out to and in collaboration with MSA Sordin Ltd. MSA Sordin Ltd produces and sells ear protector and is at present a supplier on the world market. Glowtest Fixture is a product for glow testing off detailed components in one ear protector. MSA Sordin Ltd sends today away your products for testing what is an expensive aspect in their development. The project's aim is to take forward a test equipment that copes with those high nonplussed requirements and wishes that are required for an approved physical execution. Glowtest Fixture is a physical equipment that comes used stem glow physical off all detailed components in one ear protector. Glowtest Fixture is entirely automated and implement the test without some complicated manual elements. A test is implemented of only a button print and can therefore be carried out of which employee that entire pc on MSA Sordin Ltd. The fixture is a so called table mock‐up, small and smooth, and it that is needed in order to start the fixture is a 220 volt levying. Therefore, a test can be carried out almost each as entire pcs. When the test is performed will the product can to be set away. When the test equipment is on it held the certain temperature stable within the interval in order to a test will can to be implemented anytime. It that is required in order to implement the test is a button print stem to afterwards check if it begins to glow on ear protectors. Hands nothing with ear protectors is the test validated. The result of the project is a test equipment that MSA Sordin Ltd can use itself of and that also will decrease the costs for the company. Payback time for the product lies on a week what does the fantastic profitable for MSA Sordin Ltd. This does the possible for the company to can to implement more or less continuous physicals in order to check that their products maintain highest quality. The project work has been implemented according to so called dynamic development in production. Aspects and tools that have had significant role in the development work has been various shapes of idea embarrassing ring, mock‐up production, evaluation dice and above all physicals of various kind.