EVK-F9T - User guide
UBX-21040453 - R01
Device description
Page 9 of 23
C1- Public
An SMA female jack is available on the rear side (see Figure 2) of the evaluation unit which provides a
buffered timepulse1 signal for driving laboratory equipment.
☞
J7 jumper can be shorted to allow higher output current when driving low impedance loads.
User must open the evaluation kit to access the J7 jumper as shown in the Figure 3.
Figure 3: EVK-F9T evaluation unit
–
PCB layout
4.3.3
USB connector
A USB V2.0 compatible serial port is featured for data communication and power supply.
4.3.4
D9 connector (RS232)
The evaluation unit includes an RS232 port for serial communication that is compatible with PC serial
ports. The D9 connector can only have the
UART 1
input.
Connect using a straight RS232 serial cable with male and female connectors to the port on your PC.
The maximum cable length is 3 meters. To configure the RS232 port, use the CFG-UART1 command
in the u-center application. The maximum operating baud rate is 921.6 kBaud. If you are using a USB
to RS232 adaptor cable, you can connect it directly to the evaluation kit RS232 port.
The 9-pin D-SUB female connector is assigned as listed in Table 4:
Pin Nr.
Assignment
1
Timepulse 1 output (RS232 levels)
2
TXD, GNSS Transmit Data, serial data to DTE
3
RXD, GNSS Receive Data, serial data from DTE
4
Optional time-mark input (RS-232 levels) using EXTINT0 (internal jumper J6 fitment required)
5
GND
6
Timepulse 1 output (RS232 levels)
7
Not connected
8, 9
not connected
Table 4: SUB-D9 connector pin description for EVK-F9T
4.3.5
RST button
The RST button on the front panel resets the unit.
