Command and Log Reference
66
ID
Field
Description
Format Binary
Bytes
Binary
Offset
39
E1E5bBGD
E1, E5b broadcast group delay
Double
8
H+212
40
xxxx
32-bit CRC(for ASCII and Binary only)
Hex
4
H+220
41
[CR][LF]
Sentence terminator(for ASCII only)
-
-
-
7.
TIMING Command
This command is used to set high precision timing mode for the receiver. There
are three kinds of GNSS receiver timing modes according to different application
requirements: self-optimizing timing, timing with fixed coordinate, and default high-
precision timing mode. The command parameters and methods for the three timing
modes are shown in the following:
Table 7-1: Timing Mode Parameters
7.1
Real-time Positioning Timing
Real-time positioning timing, refers that the receiver receives satellite signals and
makes positioning/timing solution, at the same time outputs the correct PPS second
pulse signal.
Abbreviated ASCII Syntax:
MODE TIMING
7.2
Timing with fixed coordinate
Timing with fixed coordinate means that the receiver antenna is correctly and
stablely installed in the known proper position. With the exact known coordinates, the
receiver carries on high-precision solution of the time information, and outputs the
correct PPS second pulse signal.
Abbreviated ASCII Syntax:
MODE TIMING fix lat lon Hgt
Command
Mode
Parameter
Parameters Description
MODE TIMING
-
-
Generates PPS with real time
positioning
FIX
Lat Lon Hgt
Generate PPS with fixed
receiver coordinates
Surveyin
Time param1 param2
Generate PPS with self-
optimizing coordinates
