Справочник Пользователя для RoyalTek reb-3000

 

17 

clock offset , and time .This enables the 

Evaluation Unit to search for the correct 

satellite signals at the correct signal 

parameters . Correct initialization 

parameters enable the Evaluation Unit to 

acquire signals quickly. 

Table 9 contains the input values for the 

following example:Switch to SiRF Binary 

protocol at 9600,8,N,1 

$PSRF101,-2686700,-4304200, 3851624, 

95000, 497260, 921, 12, 3*22 

Navigation Initialization Data Format 

Message ID 

$PSRF101 

 

PSRF101 protocol header 

ECEF X 

-2686700 

Meters 

X coordinate position 

ECEF Y 

-4304200 

Meters 

Y coordinate position 

ECEF Z 

3851624 

Meters 

Z coordinate position 

CLK Offset 

95000 

Hz 

Clock Offset of the Evaluation Unit1 

Time Of Week 

497260 

seconds  GPS Time OF Week 

Week No 

921 

 

GPS Week Number   

Channel Count 

12 

 

Range 1 to 12 

Reset Cfh 

3 

 

See Table 10

 

Checksum *22 

 

 

<CR><LF> 

 

 

End of message termination 

Use 0 for last saved value if available . If this is unavailable, a default value of 96,000 will be used… 

Reset Configuration 

0x01 

Data Valid – Warm /Hot Starts=1 

0x02 

Clear Ephemeris – Warm Start=1 

0x04 

Clear Memory – Cold Start =1 

This command is used to control Serial Port 

B which is an input – only serial port used to 

receive RTCM differential corrections. 

Differential receivers may output corrections 

using different communication parameters. 

The default communication parameters for 

PORT B are 9600 baud, 8 data bits, stop bit, 

and no parity. If a DGPS received , the 

parameters are stored in battery – backed 

SRAM and then the receiver restarts using 

the saved parameters. 

Table 11 contains the input values for the 

following example:Set DGPS Port to be 

9600,8,N,1. $PSRF102,9600,8,1,0*3C 

    Set DGPS Port Data Format 

Message ID 

$PSRF102   

PSRF102 protocol header 

Baud 9600 

 

4800,9600,19200,38400 

Data Bits 

8 

 

8,7 

Stop Bits 

1 

 

0,1 

Parity 

0 

 

0==None, 1=Odd, 2=Even 

Checksum *3C 

 

 

<CR><LF> 

 

 

End of message termination 

This command is used to control the output 

of standard NMEA messages GGA, GLL, 

GSA, RMC, and VTG. Using this command 

message, standard NMEA messages may 

be polled once, or setup for periodic output. 

Checksums may also be enabled or disabled 

depending on the needs of the receiving 

program. NMEA message settings are saved 

in battery-backed memory for each entry 

when the message is accepted.