Instruction/ maintenance manual of the product NL-504ETTL Navilock
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1 MTK NMEA Packet User Manual Revision: 0.3 Linked FW Version: 1.902_06 Release Date: 2006/05/02 MediaTek Inc. MTK NMEA Packet Format Preamble TalkerID PktType DataField * CHK1 CHK2 CR LF Packet Length: The maximum length o f each packet i s restricted to 25 5 bytes Packet Contents: Preamb le : One byte char acter.
2 MTK NMEA Packet P rotocol : In order to inform t he sender whether the receiver has received the packet, an acknowl edge packet PMTK_ACK should return af ter the receiver receives a packet. MTK NMEA Packet List: Packet Type: 000 PMTK_TEST .. ... .. .
P R O F E S S I O N A L I N N A V I G AT I O N & C O M M U N I C A T I O N 3 Packet Type: 000 PMT K_TEST Packet Me aning: Test Packet. DataField : None Exampl e: $PMTK 000*32<CR>< LF> Packet Type: 001 PMT K_ACK Packet Me aning: A cknowledg e Packet DataField : PktType: Th e packet t ype t he acknowled ge respon ds.
4 None Exampl e: $PMTK 101*32<CR>< LF> Packet Type: 102 PMT K_CMD_WARM_START Packet Me aning: Warm R estart: D on't use Ephemer is at re-star t.
5 ‘0’: No D GPS source ‘1’: RTC M ‘2’: WAAS Exampl e: $PMTK 301,1*2D<CR ><LF> Packet Type: 313 PMT K_API_SET_SBAS_ENABLED Packet Me aning: API_Set_Sbas_Enabled Enable to search a S BAS satellite or not.
6 Supported Frequency Setting 0 - Disabled or not supported sentence 1 - Output once every one posi tion fix 2 - Output once every two positi on fixes 3 - Output once every three positi on fixes 4 - O.
7 $PMTK 401*37<CR>< LF> Packet Type: 413 PMT K_API_Q_SBAS_ENABLED Packet Me aning: API_Query_S bas_Ena bled DataField : None Return : PMTK_ DT_SBA S_ENABLED Exampl e: $PMTK 413*34<CR>< LF> Packet Type: 414 PMT K_API_Q_NMEA_OUTPUT Packet Me aning: API_Query_NMEA_Out Query current NM EA sentence output frequencies.
8 DGPS Data S ource Mod e DataField : Mode: DGPS data sour ce mode ‘0’: No D GPS source ‘1’: RTC M ‘2’: WAAS Exampl e: $PMTK 501,1*2B<CR ><LF> Packet Type: 513 PMT K_DT_SBAS_ENABLED Packet Me aning: Enable to search a S BAS satellite or not.
9 Mode: 0: PWR_SAV_O FF: power saving mode off 1: PWR_SAV_ON: power savi ng mode on Exampl e: $PMTK 520,0*24<CR>< LF> Packet Type: 604 PMT K_Q_VERSION Packet Me aning: Quer y the ver sion .
An important point after buying a device Navilock NL-504ETTL (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Navilock NL-504ETTL yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Navilock NL-504ETTL - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Navilock NL-504ETTL you will learn all the available features of the product, as well as information on its operation. The information that you get Navilock NL-504ETTL will certainly help you make a decision on the purchase.
If you already are a holder of Navilock NL-504ETTL, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Navilock NL-504ETTL.
However, one of the most important roles played by the user manual is to help in solving problems with Navilock NL-504ETTL. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Navilock NL-504ETTL along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
