Polhemus 3SPACE FASTRAK, Руководство пользователя, Страница: 21 / 124

FASTRAK MANUAL
Rev. G 16 JUNE 2012
7.3 Receiver Ports (4)
The four Receiver receptacle ports are 15 pin, female “D” type connectors located on the front of
the SEU as shown in
Figure 7-1 . The receiver(s) should be connected to the SEU before the unit
is powered on and disconnected after the unit is powered off. It is permissible to disconnect and
re-connect receivers while the SEU is powered on, however, it is necessary to send the
‘^Y’ –
*Reinitialize System command (page 88 ) after doing so. This will allow the receiver’s precise
characterization matrix to be loaded into the FASTRAK memory. Again, rout the receiver cables
separately from the transmitter cable.
7.4 Power Indicator
A green LED power on indicator is located on the front of the SEU as shown in Figure 7-1 on
page 15 . Upon power up, the indicator will blink for several seconds while the system performs
its initialization and self-test routines. When these routines are complete, the indicator changes
from blink mode to steady-on mode indicating that the system is ready for operation.
7.5 I/O Select Switch
The I/O Select Switch is an 8 position switch located on the rear panel of the SEU as shown in
Figure 7-2 on page 15 , and is only read on power up or system re-initialization (see ‘^Y’ –
*Reinitialize System on page 88 ). The purpose of these switches is to select the RS-232 serial
port parameters including baud rate, character width, and parity. The modes with switch
positions and their corresponding functions are as follows:
NOTE: UP position is a logic “1” and DOWN is a logic “0” .
Switch Position Function
1 Baud rate select
2 Baud rate select
3 Baud rate select
4 Not used
5 Character width: “0” = 7 bits
“1” = 8 bits
6 Parity select
7 Parity select
8 I/O Select -- UP for RS-232
The Baud rate select logic for switches 1, 2 and 3 is as follows: (Again, 1=Up and 0=Down)
Baud Rate 1 2 3
1200 0 0 0
2400 1 0 0
4800 0 1 0
9600 1 1 0
19200 0 0 1
38400 1 0 1
57600 0 1 1
115200 1 1 1 (factory setting)
The system reads the baud rate switches only on power up or system re-initialization. Therefore,
if you change the switches to obtain a different baud rate, you must restart the system either by
recycling the power or by using the
‘^Y’ – *Reinitialize System command (see page 88 ).