What is dBm?

Raytac Corporation

A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 

(nRF51822 & nRF51422 & nRF52832 & nRF51802)

Tel: +886.2.3234.0208

What is dBM?

From Spec sheet, we can find the output power always stated as dBM.

For example:

Nordic nRF52832

Transmitting power (+4dBM~-20dBM) / Receiving Sensitivity (-96dBM)

dBm is the unit for radiowave, it is a way to express the comparison between the reference signal value

The reference value is 0dBM at 1mW, the unit represented as shown below

1/10000 times = -40 dBm

1/1000 times = -30 dBm

1/100 times = -20 dBm

1/10 times = -10 dBm

1mW =     0 dbm ← Reference Signal Value

10 times  =  10 dBm

100 times  =  20 dBm

1000 times  =  30 dBm

iBeacon VS. Eddystone

Raytac Corporation

A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 

(nRF51822 & nRF51422 & nRF52832 & nRF51802)

Tel: +886.2.3234.0208

What is Eddystone

Eddystone is the standard for the beacon using the BLE that Google announced in July 2015.

It is available includes a number of broadcast frame types on all platforms that use the BLE, such as iOS as well as Android open standards, designed to give developers and venue owners flexibility in their beacon developments and applications. Eddystone helps beacons using the Proximity Beacon API, including adding attachments in the cloud and monitoring their health.

https://developers.google.com/beacons/

Feature

Eddystone’s biggest feature is not intended to become a black box such like iBeacon service, works only for iOS. Eddystone program code is designed to be an open standard and has been published in GitHub.

The difference between iBeacon and Eddystone is the “broadcast frame type”

iBeacon transmits ID only (1 Type)

Eddystone transmits not only ID, but also URL and TLM. (3 Types)

Unlike iBeacon, Eddystone provides target users to receive the message through URL without app installing as long as the Bluetooth is turned on. 

Packet

Eddystone is allowed to transmit 17 bytes every packet.

Thus, in case of URL broadcast frame type, the data must be downsize to fit in this 17 bytes limitation

User Scence Example

  • Real time Bus location and operation status
  • Approaching or nearby the poster, the URL link will pup up feeding immediately
  • Nearby Restaurant information feeding.
  • Nearby Shops information feeding

Eddystone is designed to compensate the demerit of iBeacon’s, which is standardization.

However, iBeacon so far is still the most well-known and widely applied service right now as well as iPhone is the most well selling single mobile phone all over the word. 

Thus, the trend of which one will prevail the competition between Eddystone Vs. iBeacon is still a interesting topic and lead the delimma for developers and user to observe closely.

Steps to Qualify Your Bluetooth Products

Raytac Corporation
A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
To qualify a Bluetooth product always the issue make people headache.
Here, we summarized the procedure become simple steps to help readers to easy to follow
From Step 3~5, we are sincerely suggest readers to entrust BQB (Bluetooth Qualify Body) to provide the professional service to save time and energy according to our experience.

STEP 1 Become a membership

Adopter Membership: Free–> “Most customers pick”
Associated Membership: US$7,500 or US$35,000 (depends on company size)
For more detail of the benefit between different membership, please visit the link as below

STEP 2. Obtain Production Information from supplier or manufacturer

Make sure your chip supplier or module manufacturer has well certified or not.
All information can be refer to SIG’s QDID information in public.
Makes sure the supplier or manufacturers’ QDID has well certified including both Hardware and Profile QDID

STEP 2-1. Qualify Your Products

a. Customers can log in SIG’s website to create a project in Test Plan Generator.
b. Pick up the type of qualification, such as End Product/Subsystem/Component/Development tool/Test equipment…etc.)
c. Link Layer, Spec, Profile

STEP 3. Purchase the Declaration ID (DID)

Readers can buy the DID from SIG’s website directly.

STEP 4. Submit Qualification Document

The Qualification Documents must been signed by BQE (Bluetooth Qualify Engineer) by BQB

STEP 5. Create and Submit the qualification

STEP 6. Brand Your Bluetooth Product

 

Raytac BLE モジュールMDBT40/MDBT40-PはJASO規格 D001-94に適合

Raytac Corporation

A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
email: service@raytac.com
日本での代理店への連絡は下記の通り。
株式会社フクミ (Fukumi corporation)
消費材企画開発Gr. LBTチーム (Consumer Products R&D Group, LBT team)
榊 和優 (Kazumasa Sakaki)
Tel : 03-5687-2890 (+81-3-5687-2890)
Mail : lbt_bt@fukumi.co.jp
株式会社フクミのブログから引用。詳細は下記Link先へ。

http://bluetooth.tokyo/

NordicのnRF51824がAEC-Q100のテストに適合した記事の内容を以前投稿しましたが、
RaytacのBLEモジュールMDBT40とMDBT40-PシリーズはJASO(自動車技術会)が制定した
自動車用電子機器の環境試験の規格をクリアしています。
試験の概要は以下の通り。
1.低温下でも問題なく動作する(-30℃を72時間)
2.高温下でも問題なく動作する(85℃を120時間)
3.サーマルショックテスト(-40℃~85℃)
4.温度サイクルテスト(-40℃~85℃)
上記環境下で基本的な動きが確認でき、データのパケットロスがない事を確認します。
D001-91-1
D001-91-2
D001-91-3

Raytac Module MDBT40/MDBT40-P Certified Automotive Standard JASO D001-94

Raytac Corporation
A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
Along with Nordic nRF51824 is qualified to the automotive AEC-Q100 stress test qualification, Raytac’s Module MDBT40-256V3 & MDBT40-P256V3 also has been qualified in reliability test based on automotive standard JASO D001-94.
 
1. Operating under low temperature test (-30℃  for 72 hrs)
2. Operating under high temperature test (85℃  for 120 hrs)
3. Thermal Shock Test (-40℃ ~85℃ )
4. Temperature Cycling Test(-40℃ ~85℃ )
 
During the JASO D001-94 testing, the module is based on working status and confirmed not data or package loss during the whole testing.

Nordic 新SoC nRF51824提供開始

Raytac Corporation

A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 

(nRF51822 & nRF51422 & nRF52832 & nRF51802)

Tel: +886.2.3234.0208

email: service@raytac.com

日本での代理店への連絡は下記の通り。

株式会社フクミ (Fukumi corporation)

消費材企画開発Gr. LBTチーム (Consumer Products R&D Group, LBT team)

榊 和優 (Kazumasa Sakaki)

Tel : 03-5687-2890 (+81-3-5687-2890)

Mail : lbt_bt@fukumi.co.jp

株式会社フクミのブログから引用。詳細は下記Link先へ。

http://bluetooth.tokyo/

Nordic Semiconductorはコネクテッドカーに対応するnRF51824 Bluetooth Low Energy Socの

提供を開始したようです。

特に注目すべきは車載用集積回路向けのストレス信頼性試験AEC-Q100に合格した製品で

パフォーマンスとしてはnRF51822と同等だということです。

現在急速に進化を続け注目されている自動車分野への

強力なソリューションになることが期待されますね。

コネクテッドカーでの具体的な例といえば…

インテリジェントシート、ハンドル、ミラー、リモートキーレスエントリー等の車載装備関係や

情報システム、事故防止関係の予防・回避システム等でユーザーの利便性・安全性への

向上に寄与するのではないでしょうか?

また、エンジン回りでのケーブル類の置き換えで、

重量の軽減による燃費向上も期待できます。

そんなnRF51824はサンプル出荷を開始しており、6×6の48ピンQFNパッケージで供給されます。

Bluetooth関連の日本語ブログ オープンしました

Raytac Corporation

A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
email: service@raytac.com
日本での代理店への連絡は下記の通り。
株式会社フクミ (Fukumi corporation)
消費材企画開発Gr. LBTチーム (Consumer Products R&D Group, LBT team)
榊 和優 (Kazumasa Sakaki)
Tel : 03-5687-2890 (+81-3-5687-2890)
Mail : lbt_bt@fukumi.co.jp
Bluetoothの知りたい情報がここで入手できます!

Bluetooth Power Classes VS Working Range

Raytac Corporation
A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
There is a frequent question comes up from people!
What is the Bluetooth Power Classes? What is Class 1 and what is Class 2?
What the relationship Power Classes related to working range?
Here, there is a simple chart can help everyone to have an easy understanding!
Information quoted form Bluetooth Organization (SIG)
Now, it is obviously to know why Raytac’s module is superior!

Raytac Module Family MDBT40 VS MDBT42 (Nordic nRF51 VS nRF52)

Raytac Corporation
A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
Here, we are glad to announce 2016 Raytac Module Family have been all well planned.
nRF51 series, MDBT40 modules all have been released and have widely implements done in the market.
nRF52 series, MDBT42Q modules will proceed mass production in April 2016 and MDBT42 is expected to be available by Q3 2016

Sorting by Solution:

Nordic nRF51
MDBT40 (Available Now)
MDBT40-P (Available Now)
MDBT40nano (Available Now)
Nordic nRF52
MDBT42Q (Mass Production Schedule in 2016 April)
MDBT42Q-P (Mass Production Schedule in 2016 April)

MDBT42 (Expected Mass Production in 2016 Q3)
MDBT42-P (Expected Mass Production in 2016 Q3)

Sorting by Antenna

Chip Antenna:
MDBT40 (nRF51): Available Now
MDBT42Q (nRF52): Mass Production Schedule in 2016 April
MDBT42 (nRF52): Expected Mass Production in 2016 Q3
PCB Antenna
MDBT40-P (nRF51): Available Now
MDBT42Q-P (nRF52): : Mass Production Schedule in 2016 April
MDBT42-P (nRF52): Expected Mass Production in 2016 Q3

A Close Glance Of Raytac MDBT Series BLE Module

Raytac Corporation
A BT4.1 & BT4.2 module maker based on Nordic nRF51 & nRF52 solution 
(nRF51822 & nRF51422 & nRF52832 & nRF51802)
Tel: +886.2.3234.0208
Started from April 2016, Raytac’s MDBT42 engineering sample will be available for customer’s evaluation.
                            Length            Width        Height         GPIO   Solution
MDBT40             18.0 mm         10.0mm       3.2mm        31       nRF51822 / nRF51422 / nRF51802
MDBT40-P          18.0 mm         10.0mm      2.7mm         31       nRF51822 / nRF51422 / nRF51802
MDBT42              13.8 mm          8.8mm      1.9mm         32        nRF52832
MDBT42-P          13.8 mm          8.8mm      1.9mm          32       nRF52832
MDBT42Q            16.0mm          10.0mm     2.2mm        32        nRF52832
MDBT42Q-P       16.0mm          10.0mm     2.2mm        32        nRF52832