| Electrical Characteristics (Receiver) |
GPS Chipset : SiRF STAR IV GSD4e
Frequency : L1, 1575.42 MHZ
C/A Code : 1.023 MHz chip rate
Channels : 48
Sensitivity : -163dBm
Position Horizontal : <2.5m 2D RMS SBAS Enable
Velocity : 0.1m/sec 95% (SA off),
Time : 1 micro-second synchronized to GPS time
WAAS : Enabled for North America product s (USGlobalSat, Inc)
Datum : WGS-84
Hot start : 8 sec., average
Warm start : 35 sec., average
Cold start : 35 sec., average
Reacquisition : 0.1 sec. average
GPS Protocol Default :
NMEA 0183 (Secondary: SiRF binary)
SiRF binary >> position, velocity, altitude, status and control
NMEA 0183 MEA0183 V3.0 protocol, and supports
GPS Output Data : command GGA, GSA, GSV, RMC, VTG, GLL v2.2 (VTG and GLL are optional)
GPS transfer rate : Software command setting (Default : 4800,n,8,1 for NMEA )
Acceleration : Limit Less than 4g
Altitude Limit : 18,000 meters (60,000 feet) max.
Velocity Limit : 515 meters/sec. (1,000 knots) max.
Jerk Limit : 20 m/sec**3
Operating : -40°~ 80°C
Storage : -40°~ 85°C
Humidity : Up to 95% non-condensing
Voltage : 5V ±5%
Current : 60mA typical
Dimension : 2.32" x 1.65" x 0.82" (59mm x 47mm x 21mm)
USB Cable Length : 60" (152 cm)
Low Noise Amp
Amplifier Gain w/out cable : 27 dB Typical
Filtering : -25dB (+100 MHz)
Output VSWR : 2.0 Max.
Voltage : DC 3 ~ 5.0V
Current : 15mA max @ 5VDC
|With the SiRF CGEE (Client Generated Extended Ephemeris) technology, has the capability of predicting satellite positions for up to 3 days in advance, and will deliver a CGEE-start time of less than 15 seconds under most conditions without any network assistance. The BU-353-S4's MicroPower mode allows the receiver to stay in a hot start-like condition almost continuously while consuming very little power.|
Originally Posted by SpadesFlush
I note that you got the GPSinfo program working. I have not. Even though the GPS is registering in Streets and Trips, GPSinfo does not detect the BU-353S4 when I try to conduct a scan. Any idea what I am doing wrong?
Originally Posted by Ken in Regina
I've attached a screenshot comparing the performance of the S3 and S4 versions of the BU-353. I didn't have a program that would allow two instances to run with a different receiver connected to each. So the S3 is running in nRoute and the S4 is running in GPSInfo.
They both have similar satellite displays so you can see which satellites are being used and the signal strengths of them.
This is with the notebook sitting on the kitchen table and the two receivers connected to opposite sides of the computer.
As you can see, the S4 is doing much better than the S3.
It should be pointed out that even the S3 version is doing very well for being indoors.
Originally Posted by mihermano
Hi. Am I seeing those images correctly? Does the S4 put you in the middle of the northern Pacific?