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Author Topic: BT-328 F.A.Q's  (Read 1147 times)

emadrid

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BT-328 F.A.Q's
« on: April 01, 2011, 12:50:00 pm »

BT-328 Bluetooth GPS FAQ

1.) Q: Is this device WAAS enable?
1.) A: No, this device is not WAAS enabled.

2.) Q: What datum is used?
2.) A: WGS 84 

3.) Q: Is this device waterproof?   
3.) A: No…       

4.) Q: What's the refresh rate?   
4.) A: GGA(1sec), GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec)       

5.) Q: How many satellites are needed for 3-D positioning?   
5.) A: A minimum of 4 satellites (3 for 2-D no altitude)         

6.) Q: Can I reconfigure receiver? If so, what program?           
6.) A: Yes. SirfDemo programming utility. Note, custom settings are temporary until the receiver has exhausted both the Li-ion battery and internal Super-Cap back-up power supply.  Then the receiver will revert back to its original default settings.

7.) Q: Can I reconfigure receiver's Baud-Rate? If so, what program?       
7.) A: Yes. SirfDemo programming utility. Note, custom settings are temporary until the receiver has exhausted both the Li-ion battery and internal Super-Cap back-up power supply.  Then the receiver will revert back to its original default settings.

8.) Q: Can I reconfigure receiver's NMEA data? If so, what program?       
8.) A: Yes. SirfDemo programming utility. Note, custom settings are temporary until the receiver has exhausted both the Li-ion battery and internal Super-Cap back-up power supply.  Then the receiver will revert back to its original default settings.

9.) Q: What platforms are supported?     
9.) A: A better answer. Most devices with Bluetooth communication capabilities. (Check Manufacturer Specs)

10.) Q: Once set. Is SiRF Binary Protocol a permanent configuration?
10.) A: These settings are temporary until the receiver has exhausted both the Li-ion battery and internal Super-Cap back-up power supply.  Then the receiver will revert back to its original default settings.         

11.) Q: What is the Blue LED indicator represent?     
11.) A: Bluetooth communication status. Blinking (Slowly)=No Bluetooth connection. Blinking (Quickly)=Bluetooth connection established.   

12.) Q: What is the Yellow LED indicator represent?     
12.) A: Unit is charging with external power plugged in. Red= Needs charging immediately. Yellow= Battery charging.  LED off=Battery fully charge.   

13.) Q: What is the Green LED indicator represent?     
13.) A: Satellite status. Green LED Flashing=GPS position is fixed. Green LED Steady= No GPS position is fixed and searching.       

14.) Q: My GPS shuts down after a period of time. Why?
14.) A: This unit is programmed to shut off automatically after 10 minutes if not communicating with another Bluetooth device.

15.) Q: What's the unit's Bluetooth transmission radius?
15.) A: Ten meters (10m) is unit's maximum Bluetooth transmission radius.

16.) Q: What's the unit's charging current draw? When Off? When On?     
16.) A: Approximately 1300 mAh. 

17.) Q: What's the unit's Baud Rate settings?
17.) A: 38400 bps     

18.) Q: When I turn the power on, does it actually start the GPS or the BT module?   
18.) A: Both start at the same time, if no BT connection is made within ten minutes, then both will turn off.         

19.) Q: What are the charger's electrical specifications (voltage/ amps) for this unit?   
19.) A: 5V @ 1300 mAh     

20.) Q: Can I disable the auto-off feature?         
20.) A: Unfortunately, it’s a standard programmed feature to conserve battery energy.

21.) Q: How much accuracy is comprised without utilizing WAAS?         
21.) A: Since Selective Availability (SA) was removed in May 2000, the residual GPS error of approximately 10 meters is mostly due to GPS signal deflection that the SBAS system can only marginally correct (I have never been able to measure any improvement from EGNOS but others have seen 1/2 meters with WAAS). On the other hand SBAS is crucial for critical use such as flying a plane as it allows for near real time GPS signal integrity checking.       

22.) Q: Does the BT-338 supports multiple bonding/pairing so it can be used with more than one Bluetooth partner at the same time?     
22.) A: Unfortunately, it does not support this feature.           

23.) Q: What is the output format for this receiver?         
23.) A: Output format: GGA(1sec), GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec)       

24.) Q: Will my receiver support older NMEA standards?     
24.) A: Yes, NMEA 2.0 is backwards compatible with older versions of the protocol. NOTE:  If your map software (such as Street Atlas 5) requires data   
sentence GGA, and your GPS (such as the Magellan 3000) does not           
output GGA, then they will NOT work together.         

25.) Q: What is the meaning of "baud rate"?   
25.) A: Baud rate is really the rate of bit transitions on the serial data link. Since each byte of data adds a start and stop bit, it is 10 bits long, and 38400 baud is 3840 bytes per second. Faster bit rates transfer more bytes per second, i.e., greater bandwidth.     

26.) Q: What is static navigation?     
26.) A: Static navigation when enable, velocities lower than 1.2 m/s for 3 seconds we will freeze the position, and leave them frozen until velocity exceeds 1.4 m/s. Static navigation is a mode designed for motor vehicles, which causes the position to become pinned at one location when velocity is determined to be low enough. This is designed to make navigation systems operate more reasonably when the GPS Selective Availability (SA) signal degradation is turned on.       

27.) Q: Why is my GPS receiver detected by Bluetooth but no communication is being established to GPSInfo or my third party mapping application?   
27.) A: Some BT-328 receivers have been found with the NMEA protocol disable. You may consider using a Bluetooth enabled notebook or desktop and SirfDemo program to switch the receiver back into NMEA mode. If problems persists, continue by performing the following:
Perform the following procedure:
1.) Leave your BT328 on until the battery’s energy is consumed.
2.) Re-charge BT328’s battery as recommend in user’s manual.
4.) Disconnect receiver from battery charger.
5.) Remove the BT328 from your PDA's Bluetooth manager.
6.) Re-pair BT328 to your device and new device (passcode is 2003)
7.) Enter device passkey “0000”.

28.) Q: Why is my date stamp data showing "1985 or 2085"?
28.) A: If your receiver date stamp data shows 2085/09/12 or just 85/09/12. The difference is that 1985 is what the date would be if the receiver thought it was first cycle of GPS weeks rather than the current second cycle (1985/09/12 + 1024 weeks = 2005/04/28). To reset, then perform the following procedure:
1.) Leave your BT328 on until the battery’s energy is consumed.
2.) Re-charge BT328’s battery as recommend in user’s manual.
4.) Disconnect receiver from battery charger.
5.) Remove the BT328 from your PDA's Bluetooth manager.
6.) Re-pair BT328 to your device and new device (passcode is 2003)
7.) Enter device passkey “0000”.

29.) Q: Why does my receiver fail to acquire satellite information after in use from a flight? 
29.) A: Under GPSInfo, perform a cold start. In result, the BT-338 will reset its registers for terrestrial coordinate calculation.     

30.) Q: What’s the official time is required to fully charge the unit from having the red led flashing?   
30.) A: Read user’s manual.

31.) Q: How important is having WAAS enabled on your GPS receiver?         
31.) A: SiRFstartIII currently does not have WAAS enabled, not that this matters unless you intend on relying on it to operate a plane.

32Q) What satellite identification number is used for WAAS and EGNOS?
32A) Satellite #33 (AoRE) is for EGNOS, Satellite #35 (AoRW) is for WAAS, and it has been suggested that Satellite #41 (PoR) will be used to indicate that data is being received from the Japanese MSAS system.

33.) Q: What is trickle mode? 
33.) A: The Trickle mode allows for an increase in battery life by putting the GPS module in sleep mode for very short periods of time, such as 300ms per 1s cycle, which will result in a battery life increase of about 40% according to my testing. It can be useful for certain types of applications but there is a hit on performance as the receiver will have to get "back on its feet" when it wakes up. It is especially problematic in difficult reception conditions. Starting with FW 2.3, SiRF has added the "Adaptive Trickle" mode, which as its name implies will adapt the power savings to the conditions of reception. In optimal conditions, I found that the battery life increase amounts to about 30%.     

34.) Q: What is needed for Tom Tom Navigator to see my BT-328 receiver?
34.) A: Go to Bluetooth settings, advanced, services, serial port, and make a note of the outgoing port - that's the one you need to use. In Bluetooth manager, I'm sure you have connected to the SPP service of the receiver. Pairing is nice, but not required. In Bluetooth Manager search for new devices, once it found the BT-328, tap it to find the available services. Find the SPP service and connect to it. TomTom Navigator needs BT-328 to be selected as an "Other cable NMEA GPS receiver" instead of "Other Bluetooth GPS receiver".  Once this is performed TomTom Navigator will be able to "see" the BT-328 GPS device.  The problem lays with the TomTom software, not with the BT-328.

35.) Q: Cannot connect to BT-328. When doing a discover I see the BT-328. But I cannot establish a serial connection. What I can do? 
35.) A: Change original microsoft windows XP bluetooth stack. Instead of the stack provided from IBM ( widcomm )

36.) Q: Lately it takes too long to lock the satellites. Sometimes it took as long as 7-9 minutes (solid green LED). Environment: highway, no high trees and buildings. What can I do to correct this?
36.) A: Perform the following procedure:
1.) Leave your BT328 on until the battery’s energy is consumed.
2.) Re-charge BT328’s battery as recommend in user’s manual.
4.) Disconnect receiver from battery charger.
5.) Remove the BT328 from your PDA's Bluetooth manager.
6.) Re-pair BT328 to your device and new device (passcode is 2003)
7.) Enter device passkey “0000”.

37.) Q: Why am I not getting any or very weak GPS signals even though my GPS receiver is directly under the windshield glass?
37.) A: Certain vehicles may be equipped with special windshields that contain metal in the glass that prevents GPS and RF signals from being received properly. Customers with these types of windshields must use an exterior GPS antenna for improved results for GPS applications. If you are unsure about whether your vehicle has one of these types of windshields, contact your dealer and request more information. This vehicle list may not be complete and may updated from time-to-time.
See: http://www.e-zpassny.com/static/info/exteriortags.html

38.) Q: The battery light didn't turn orange while the unit was being charged.  What can I do to correct this problem?
38.) A: If you are using the DC charger check for an open (blown) fuse. In the other hand, if you are using the AC charger connect a different device that supports this voltage to confirm its functionality.

39.) Q: How do I connect and use a Bluetooth GPS device with Windows?     
39.) A: In order to set up a Bluetooth Connection with a GPS receiver, please follow these steps...            Note, configuration procedure is analogous to the BT-338 Bluetooth GPS model.

40.) Q: How do I connect and use a Bluetooth GPS device with Mac?     
40.) A: In order to set up a Bluetooth Connection with a GPS receiver, please follow these steps...            Note, configuration procedure is analogous to the BT-338 Bluetooth GPS model.

41.) Q: How do I connect and use a Bluetooth GPS device Pocket PC?   
41.) A: In order to set up a Bluetooth Connection with a GPS receiver, please follow these steps...            Note, configuration procedure is analogous to the BT-338 Bluetooth GPS model.

42.) Q: How do I connect and use a Bluetooth GPS device Palm?
42.) A: In order to set up a Bluetooth Connection with a GPS receiver, please follow these steps...            Note, configuration procedure is analogous to the BT-338 Bluetooth GPS model.

43.) Q: How do I connect and use a Bluetooth GPS device WinMobile5?
43.) A: In order to set a Bluetooth Connection with a GPS receiver, please follow these steps... Note, configuration procedure is analogous to the BT-338 Bluetooth GPS model.

44.) Q: There is a "?" over the gps icon and I am not allowed to enter a security code. when opening third party software the gps is detected. What can I do to correct this?
44.) A: Disregard the GPS icon question mark and proceed with the pairing process. Worst case, perform a device reset.

45.) Q: What are the device’s specifications?
45.) A: The specifications are the following:
     - SiRFstarIIx (GSC2) chipset, senstivity -155dBm (SiRFIII=-159dBm)
     - 1300mAh battery rated at 16 hours of continuous use.
     - Auto-off mode like on the BT-338
     - Dimensions : 67.5mm x 45mm x 17mm
     - Weight : 65g

46.) Q: What’s the BT328 chipset?
46.) A: SiRFstarIIx (GSC2) chipset

47.) Q: What is the benefit of the SiRFstarIIx (GSC2) chipset?
47.) A: Power consumption reduced by a third compared to the previous generation as well as with the current SiRFstarIII design.

48.) Q: What is the device’s passkey?
48.) A: The device’s passkey is “0000”.

49.) Q: Can I alter the GPS datum?
49.) A: Unfortunately, you cannot alter the GPS datum.

50.) Q: After changing my GPS receiver to send data to my PC in SiRF format, which was configured using the included SiRFDemo utility program, my GPS receiver's LED is now very dim and no longer is sending data to my mapping application.            What can I do to correct this?
50.) A: First... you are required to download SiRF Demo programming utility from here

Once this program is downloaded and installed on your laptop or desktop machine, you may proceed executing the following instructions listed below.

1. Select "OK" on the Data Source Setup.
2. Mirrored Serial Port and Baud Rate settings found in Device Manager ( Device Manager information can be accessed from Start->Control Panel->System->Hardware->Device Manager-> Ports->
For Compact F: Compact Flash OX16CF950 (Com X)
For USB: Prolific USB-to-Serial Comm Port (COM X)
3. Then, select "Action" followed by "Open Data Source".
4. Select "Action" followed by "Switch to NMEA Protocol".
5. Finally, at this step click "Send".
6. Exit the program.
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