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GPS Receiver Board GPS-24 / 24A Operating Manual
Rikaline
Specifications subject to change without prior notice
Rikaline International Corp. 10F, 64, Kang-Din Road, Taipei 108, Taiwan
Tel: ++886 2 2370 4688 Fax: ++886 2 2370 4686 E-Mail: info@rikaline.com.tw Web: www.rikaline.com.tw
3 Maximum VDOP
1
Unsigned 4 x10, [0-100]
4 Minimum SNR Unsigned 2 dB/Hz, [20-45]
5 Minimum Elevation Unsigned 2 Degrees, [0-90]
6 Noise Floor Unsigned 4 -, [400-1000]
7 Navigation Mode 1
1
Unsigned 1 1 = Auto (hold alt)
2 = 2D Mode
4 = 3D Mode (calc alt)
8 2D Mode Altitude
1
Unsigned 6 Meters above MSL
9 Navigation Mode 2
1
Boolean 1 0 = Auto
1 = Static
10 Maximum Altitude Unsigned 6 Meters.
Examples:
$PNMRX110, 0,-2:0*xx: Set the local time to –2 hours 0 minutes.
$PNMRX110, 4, 35*xx: Set the minimum SNR to 35
C.8 $PNMRX111, Software reset
This message is used to reset the systems. If the message is sent without parameters the receiver reboots
according to the fix procedure (hot, warm or cold) configured with the PNMRX101 or PNMRX104 messages.
A second parameter can optionally be used to specify which actions are executed after the reset. If the last
bit field is set to ‘1’, then the actions are repeated permanently at each reset, until this bit is cleared.
Field Format Min
chars
Max
chars
Notes
Message ID $PNMRX111 6 8 PNMRX111 protocol header.
Invalidate
parameter
Integer OR
String
1 7 If integer, the bit field have the following
meaning (the action described is executed if the
bit is 1):
Field Action
0 Reload settings from Flash
1 Clear almanac data and don’t load if
from flash
2 Clear Ephemeris data
3 Clear ionosphere and troposphere
corrections
4 Invalidate stored position
5 Invalidate stored time
6 Copy oscillator offset from Settings
7 Sticky bit –if ‘1’ the action are repeated
at each reset
If String, the following values are allowed:
FACTORY See Section 2.1 for definition.
COLD See Section 2.1 for definition.
WARM See Section 2.1 for definition.
HOT See Section 2.1 for definition.
Checksum *xx (0) 3 3 2 digits.
Message
terminator
<CR> <LF> 2 2 ASCII 13, ASCII 10.
Examples:
$PNMRX111*xx: Resets the system
C.8 $PNMRX112, Power Mode Control
This message is used to configure the operating modes of the receiver. Low power modes can be activated
and configured. Low power mode starts to work only after the receiver has a complete and up to date
almanac and it can produce the fix.