TX/RX control issue of embeded WiFi/BT module(BCM4354)

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi,
We want to know how to control the TX/RX signal of wifi/bt module(cypress BCM4354) on nvidia-jetson tx2?
It need to implement for de-sense/production test and certification.
We have already asked the local cypress and broadcom, their reply is to be supported by nvidia,and we think so too.
Because this wifi/bt single chip is design on jetson-tx2 board, nvidia should be to fine tune the performance to get the global certificate.
All certification lab of taiwan(sporton/SGS/BV…) require us to provide such tools in order to be certified.

2

bryan.huang,

Please refer to the wireless tuning guide from our download center.

3

We already have only found a relevant document(Jetson TX1-TX2 OEM Wireless Compliance Guide) in the download center, but there is no mention of any how to control and set up TX/RX signal, so we need to ask you how to control it.

4

Hi, for JEP customer please refer to the compliance guide and ask vendor for tool, other users have followed this guide to obtain their wireless certification.

5

Hi,
Not just certification, such as production line or interference testing, is the need for such TX/RX control tools.
We also asked wifi/bt vendors(cypress&broadcom), their responses are need supported by nvidia, because this product is sold by nvidia.

6

We can’t provide such third-party tool, vendor should be responsible for that as other users got. And that is a general tool for lots of products of vendor, they should provide.

7

We contacted cypress and broadcom already, and they made it clear that this must be assisted by nvidia.
Basically, we are customers, this problem should be solved by nvidia, but now all reply is to ask ourselves to find the relevant manufacturers.
This isn’t reasonable.

8

Hi bryan.huang,

Let’s separate your requirement to two parts: 1. Lab certification and 2. production test requirement.

For 1, please refer to the Jetson TX1 and Jetson TX2 OEM Wireless Compliance Guide, see TAIWAN CERTIFICATION INSTRUCTIONS → Option2.

For 2, production test, you will need to have NDA with Cypress/Broadcom to get their BCM4354 MFG firmware to full fill your requirement on production line.

Hope this is clear to help you move forward.

Thanks

9

Hi,
For 1,our products are sold in the US/EU region, not in Taiwan, but the certification will be done in Taiwanese certification labs. This should not be followed “TAIWAN CERTIFICATION INSTRUCTIONS → Option2” ,right?
For 2, Cypress/broadcom reply us that the wifi/bt chip is mounted on the nvidia-jetson tx2 board, not purchased with them, so can’t sign NDA with us.

10

Hi,
Any updates?

11

Hi bryan.huang,

For US/EU region, may I know why can’t leverage our NVIDIA certificates ID?
If customers use Antennas with the same GAIN or LOWER as the ones that we performed certification with, then by design they should not have any problems.
Please refer to page 2 at Jetson TX1 and Jetson TX2 OEM Wireless Compliance Guide.

If they are not using antennas with the same gain or lower then yes they could have problems, at this case, the alternative suggestion is to use TX2i for end product.

We will not release the WL tool due to it’s owns by 3rd party, not us. Customer must request this with Cypress/Broadcom under NDA. Some other region customers are in this way.
If can’t get the tool from them, for production tests, you have to find a way to manipulate the SW, Wifi channel hotspot, or skip the test, or use a different antenna so that the gain is lower and then correct by design.

Thanks

12

Hi,
FCC certification can leverage in US, but CE can’t.
The rule of CE products even if the module has been certified, but the end product still needs to be redone.
So how to solve this critical issue?

13

Hi,
Any updates?

14

Hi bryan.huang,

Our WW Safe module has 2.4/5.2/5.3GHz band enabled and A notified body type examination certificate is not required because these bands are harmonized already from CE standard.
They can create their own DoC with their own system level EMC & Safety test plus spurious emission test as mentioned at EU Certification Guidance.

EU Certification Guidance
The host system manufacturer is responsible for compliance of the end product. Some of the Jetson module test data maybe leveraged to satisfy compliance with the essential requirements of the radio spectrum (Article 3.2 of the Radio Equipment Directive) but partial testing (for example, spurious emissions) will still be required for the host + module. Additional testing will be required to meet the essential requirements for EMC and Safety (Article 3.1a and Article 3.1b). Once the requirement of the RED is met, the host manufacturer can create the DoC and label the product accordingly. If desired, a Notified Body can be engaged, and Type Examination Certificate issued. Note that all standards relating to Article 3.2 are all harmonized and have been applied in full.
Always consult with the lab partner/Notified Body to avoid regulatory issues.

Thanks