วารสาร Metrology Info ปีที่12 ฉบับที่57...

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WORLDÇѹÁÒµÃÇÔ·ÂÒâÅ¡ : World Metrology Day

SPECIAL

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NIMT¡Òö‹Ò·ʹàÇÅÒÁҵðҹ¼‹Ò¹Ãкº FM/RDS

METROLOGY»ÃÐÁÇÅÀÒ¾¡Ô¨¡ÃÃÁ

NIMT

NIMT26th APMP General Assembly and Related Meetings 2010 IMEKO 2010 : TC3, TC5 and TC22 Conferences

1912

20

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2Vol.12 No.57 July-August 2010

Advisors AVM Pian TOTARONG, Somsak CHARKKIAN, Maj. Gen. Chainarong CHERDCHU, Veera TULASOMBAT, Ajchara CHAROENSOOK,Gp. Capt. Piya BHUSAKAEW, Prawet MAHARATTANASAKUL, Virat PLANGSANGMAS, Flt.Lt. Tawat CHANGPAN, SomchaiNUAMSETTEE, Maj. Arkom KRACHANGMOL, Dongkamol VIROONUDOMPHOL, Nattanit PONGIJEERAKUMCHORN

Editor Prasit BUBPAWANNAAssistant Editors Janwalee DANTANASAKORN, Watchareeporn KLINKHACHORNPublisher Public Relations Section, Policy and Strategy Department, National Institute of Metrology (Thailand), Ministry of Science and Technology

3/4–5 Moo 3, Klong 5, Klong Luang, Pathumthani 12120, Thailand Tel: 0 2577 5100 Fax: 0 2577 2877, 0 2577 2859E-mail: nimt@nimt.or.th Website: http://www.nint.or.th

EDITOR'S

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WORLD

ʶҺѹÁÒµÃÇÔ·ÂÒáË‹§ªÒµÔ

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SI

KSA

mol m

kgcd

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SPECIAL

8Vol.12 No.56 May-June 2010

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¡Òö‹Ò·ʹàÇÅÒÁҵðҹ¼‹Ò¹ÃкºFM/RDS

NIMT

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FM/RDS Broadcast System

RDS Group 4A

Broadcast Station102.5 MHz RTAF

ExciterRDS Encoder

Network Time Protocol

GPSReceiver

L-R Stereo Signal

FM/RDS Receiver

AntenaL-R Stereo Signal

CT Clock Data

Signal Processing Module

Micro-ControllerModule

Digital SignalProcessing

ModuleTime Code

Amp/Speaker

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Modified Julian Day code(5 decimal digits)Spare bitsB0TP

+ PTY + + +

UTC

Hour Minute Local time offset

Modified Julian Day code

0 0 0 2 20 2 2 22 2 20 25 2 2 22 2 20 + 2 2 22 2 202 20

Hour code Sense of local time offset0= +, 1= -

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»ÃÐÁÇÅÀÒ¾NIMT

NIMT

Vol.12 No.57 July-August 2010

CCQM-K51 Carbon monoxide in nitrogen

Deg

rees

of e

qulv

alen

ce (%

)

NM

U

NM

ISA

UBA

(D)

VNIIM

SMU

NPL

CERI

BAM

CEM

CEN

AM

GU

M

INM

ETRO IP

Q

JRC

KRIS

S

LNE

MET

AS

NIM

NIM

T

NIS

T

VSL

NPL

I

FMI

NM

IA

Laboratory

-3

-2

-1

0

1

2

3

4

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(k=2)

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23Vol.12 No.57 Jury-August 2010