CG2-SHANTY • CompactPCI GPS Receiver/Clock
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EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 HAMM • Germany
Tel. +49 (0)2381/6890-0 • Fax. +49 (0)2381/6890-90 • E-Mail [email protected] • Internet www.ekf.com
CG2-
SHANTY
GPS
ANT
D
G
P
S
S
P
2
R
X
T
X
R
X
U
T
C
GPS
DGPS
R
X
T
X
R
X
U
T
C
GPS
DGPS
Serial Interfaces
General Information
The CG2-SHANTY is provided with two serial interfaces. The first one is directly connected to the
NMEA (primary port) of the Jupiter GPS receiver. Commands and data are passed bidirectionally
across this interface, either ASCII coded using the NMEA protocol (by default), or using the SiRF
binary (proprietary) protocol. This port normally operates at 4800bps, no parity, 8 data bits, one
stop bit, and is not available for external usage.
The second serial port is available by the front panel connector SP2, configured as RS-232E
interface. It is intended mainly to receive RTCM DGPS data to sharpen GPS positioning
information. A tap is established leading to the auxiliary serial interface on the Jupiter module.
This port normally operates at 9600bps, no parity, 8 data bits, one stop bit, when used as DGPS
input.
If there is no need for an external DGPS receiver (due to deactivated GPS SA, or when using GPS
timing information only), the second serial port SP2 can be used as general purpose serial
interface, like any PC style COM port. The connector SP2 is described in detail later on in this
document.
There are indicator LEDs mounted in the front panel to signal both RXD and TXD of the first
(internal) serial interface, and RXD only of the second serial interface.
