Delta Electronics TYPEIII Users Manual

ProST

IEEE802.11b/g WiFi Board

Preliminary Reference Guide

Rev: 1.00

Date: August 31, 2005

Total Manufacturing Test Process Overview:

In general the following steps are considered part of a manufacturing (test) flow:

1. PCBA assembly

2. Inspection(visual, automated visual, X-ray, )

3. Structural test of the digital circuitry(Boundary Scan Test (BST), or other

methods)

4. Functional test of the analog circuitry (radio test).

5. Calibration of the radio (for optimal performance within legal bounds); storing the

results to non-volatile memory.

6. Customization/ serialization (adding identity such as Part number to the DUT).

7. Plastics assembly.

8. Pack & ship.

Figure 1. Manufacturing Test Process

Manufacturing Test Plan Overview for IMT tool

1. Test initialization and Product identification

PCB serial number, product part number, and MAC address are established.

A bar code scanner or the keyboard can be used to enter this information

By default the information is divided between two codes. The first (bar) code

contains the PCB serial number. The second bar code contains the product part

number and half the Mac address.

2. DUT insertion

Depending on the type of DUT, the software waits for the DUT to be attached to

the set-up. If the DUT is not responding, the user is offered an escape by pressing

the ABORT button.

Alternatively the user is asked to insert the DUT and press the NEXT button. The

software then switches the DUT on, and continues with the testing.

3. System test

Properties of the operating system, including the version number, are determined

and tested for compatibility. The versions of a number of DLLs and other system

files are checked for compatibility as well.

4. Firmware and Driver Compatibility test

The MTFW version number is tested for compatibility.

5. Transmitter verification

A quick test is performed to verify the transmit function of the DUT. If the DUT

passes this test, the following is true: the test system can communicate with the

DUT firmware. The DUT can transmit RF signals with approximately the right

frequency and amplitude.

6. Frequency accuracy

The carrier frequency accuracy of the DUT is determined at the center channel.

The sum of the measured deviation plus the maximum instrument error must be

less than the limit set by the 802.11 standard

7. Receiver verification

The capability of the receiver circuitry to receive and demodulate 802.11 packets

is verified. If the DUT passes, the following is true: the receiver functions

correctly and the receiver sensitivity(PER) is within limits.

As part of this test the GRT output power is measured, the RF isolation between

GRT and DUT is verified, and interference from other 802.11 sources is detected.

8. RSSI calibration (linear approximation)

Linear curve fitting is performed on the result, and PDR 0x1902, 0x1905, or

0x1908 is calculated, depending on the platform type.

9. PA control loop calibration

The PA control loop behavior is measured as a function of modulation type (bit

rate) and channel (frequency). Depending on the platform, PDR 0x1901 or

0Xpdr1903 and 0x1904 are calculated.

There are two implementations for this step:

1. PA Calibration

2. PA Curves and PA limits

Besides, we have max/min output power pass/fail criteria for different

modulation as Figure2 in 9301A_param configured file.

Figure2. Power Limit

10. TX IQ Calibration

For the platforms that require it, ZIF TX IQ Calibration is performed.

11. NV initialize

By default this test will (re-)initialize and therefore erase the non-volatile

memory.

12. Upload files to flash

Files can be uploaded to AP based products. These files can contain firmware

images, boot loaders or custom made images.

13. Write PDA

The PDRs that were generated by the other test modules are written to the PDA

that resides in the non-volatile memory of the DUT.

Features

The features supported by the ProST 802.11g WLAN Access Point are outlined below:

Interfaces directly to 10/100Mbps IEEE 802.3 Ethernet networks
Supports IEEE 802.11 WLAN functions
Supported WLAN Bridge function (WDS: Wireless Distribution System)
Firmware is stored in a flash memory and can be upgraded remotely.

Configurable through Web based management.
Power, Ethernet and wireless activity LED indicators.
One external and one internal inverted F antennas supporting diversity.

Wireless Network Configuration

Ad-hoc Mode (Peer-to-Peer Workgroup)

802.11b/g WiFi Module

The Institute of Electrical and Electronics Engineers (IEEE) standard for wireless LANs (WLANs), 802.11, offers two
methods for configuring a wireless network — ad hoc and infrastructure. In an ad hoc network, computers are
brought together as needed; thus, there is no structure or fixed points to the network — each node can generally
communicate with any other node. There is no access point involved in this configuration. It enables you to quickly
set up a small wireless workgroup and allows workgroup members to exchange data or share printers as supported by
Microsoft Networking in the various Windows operating systems. Some vendors also refer to ad hoc networking as
Peer-to-Peer group networking.

In this configuration, network packets are directly sent and received by the intended transmitting and receiving stations.
As long as the stations are within range of one another, this is the easiest and least expansive way to set up a wireless
network.

To set up an ad hoc workgroup operating with standard protocols, do the following:

•

Set all stations to connect in Ad-hoc mode (or Peer-to-Peer workgroup mode)

•

Set all stations to use the same network name (or SSID).

•

Set all stations to use no WEP encryption key or an identical WEP encryption key

•

Set all stations to use the same wireless channel for communication

Infrastructure Mode

To set up an infrastructure network operating with standard protocols, do the following:

• Set all wireless stations to connect in infrastructure mode

• Set all stations to use the same network name (or SSID)

• Set all stations to use no WEP encryption key or an identical WEP encryption key

• Set up wireless channels used by individual access point. (It is not necessary to set channels on the stations as
the stations will automatically scan through all channels for the nearest access point.)