WL1807MOD: RX and TX issue on Calibrator command.

Akihiko Fujinaka

Part Number: WL1807MOD

Hello expert,

Here I have 2 questions from our customers.

1) When they evaluate the RX packet rate with the following Calibarator tool command.

calibrator wlan0 plt power_mode on
calibrator wlan0 wl18xx_plt tune_channel 5 0 1
calibrator wlan0 wl18xx_plt start_rx 00:00:00:00:00:01 00:00:00:00:00:02

THe command "calibrator wlan0 wl18xx_plt get_rx_stats" result shows some good packets even though the no input.

What is happening here?

2) When they evaluate the TX waveforms on the following channels,
The TX power DIP is observed on the following channels, any other channel is OK.
60ch(5300MHz)、64ch(5320MHz)、120ch(5600MHz)、124ch(5620MHz)

They uses following commands.
calibrator wlan0 plt power_mode on
calibrator wlan0 wl18xx_plt tune_channel 64 1 1
calibrator wlan0 wl18xx_plt set_tx_power 12500 0 1 64 0 0 0 0 0 0 0 0
calibrator wlan0 wl18xx_plt start_tx 500 19 1000 0 0 0 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

Can you please tell what is the root cause of this issue?

Regards,
A.Fujinaka

over 4 years ago

0 Vincent Rodriguez over 4 years ago

TI__Mastermind 28285 points

Hi Akihiko,

To avoid interference on the RX testing, the customer should be doing this in a RF-shielded room. Can you confirm they are doing this? Also, what is the issue on the TX? Unsure what the problem is.

0 Akihiko Fujinaka over 4 years ago in reply to Vincent Rodriguez

TI__Expert 3505 points

Hello Vincent,

1) RX issue : Even though they tested in the shielded room, they found some good packet.

2) TX issue: for example of 64ch , you can find the DIP around the center frequency as follows.

Regards, A.Fujinaka

0 Vincent Rodriguez over 4 years ago in reply to Akihiko Fujinaka

TI__Mastermind 28285 points

Hi Akihiko,

What modulation is the customer using? 40MHz? what is the channel power and is it inline with the datasheet?

0 Akihiko Fujinaka over 4 years ago

TI__Expert 3505 points

Hello VIncent,

As described , It set with , MCS7, 20MHz, Power is as follows,

calibrator wlan0 wl18xx_plt set_tx_power 12500 0 1 64 0 0 0 0 0 0 0 0

They use just use the following command , so should be inline with the datashee.

calibrator wlan0 plt power_mode on

calibrator wlan0 wl18xx_plt tune_channel 64 1 1
calibrator wlan0 wl18xx_plt set_tx_power 12500 0 1 64 0 0 0 0 0 0 0 0
calibrator wlan0 wl18xx_plt start_tx 500 19 1000 0 0 0 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

Regards, A.Fujinaka

0 Vincent Rodriguez over 4 years ago in reply to Akihiko Fujinaka

TI__Mastermind 28285 points

Is this on the customer HW? Can they test this on TI reference EVM?

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WL1807MOD: RX and TX issue on Calibrator command.