Trimble Outdoors AgGPS 252 - Manual (Page 61)

AgGPS 252 Receiver User Guide 55
Specifications A
A.3
L-Band Satellite Differential Correction
Receiver
Table A.3 lists the characteristics of the L-band satellite differential
correction receiver with OmniSTAR support.
OmniSTAR HP position
accuracy 10 cm (3.94 in) after convergence, 2 sigma, if all the following
criteria are met:
• At least 5 satellites
• PDOP <4
• OmniSTAR HP corrections
Convergence time can vary, depending on the environment.
Time to the first fix (submeter accuracy) is typically <30 seconds;
time to the first useable fix (<10 cm accuracy) is typically
<30 minutes.
Time to first fix <30 seconds, typical
Multipath mitigation EVEREST technology
Satellite differential
compatibility OmniSTAR, WAAS, and EGNOS
NMEA messages GGA 1 1 1 , GLL, GSA1, GST, GSV, GST, MSS, PTNLDG, PTNL PJK,
PTNL PJT, PTNL VGK, PTNL VHD, PTNLEV, PTNLID, PTNLSM,
RMC1, VGK, VTG1, XTE, ZDA
1 By default, the receiver is configured to output GCA, GSA, RMC, and VTG messages at a 1 Hz
(1 position per second) update rate.
Table A.3 L-Band satellite differential correction receiver with
OmniSTAR support
Item Description
Bit error rate 10 -5 for Eb/N of >5.5 dB
Acquisition and reacquisition time <5 seconds, typical
Frequency band 1525–1559 MHz
Channel spacing 0.5 kHz
Table A.2 GPS channels performance (continued)
Item Description
Ag252_100B_UserGuide_ENG.book Page 55 Thursday, July 28, 2005 4:06 PM