TREK-755/TREK-756 User Manual
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4.3 CMOS Clear for External RTC (JP1)
4.4 COM-port Interface
The computer provides three serial ports: COM1, COM 3: RS-232 and
COM2: RS-232/422/485 (in one COM port connector).
4.4.1 COM2 RS-232/422/485 Setting (JP5)
COM2 can be configured to operate in RS-232, RS-422, or RS-485 mode.
This is done via JP5 settings.
Warning:
To avoid damaging the computer, always turn
off the power supply before setting “Clear
CMOS”. Set the jumper back to “Normal opera-
tion” before turning on the power supply.
Table 4.3: Clear CMOS / External RTC (JP1)
*Normal operation (default)
Clear CMOS
Table 4.4: COM2 RS-232/422/485 setting (JP5)
*RS-232
RS-422
RS-485
1
2
3
1
2
3
5
1
9
13
17
2
6
10
14
18
2
6
10
14
18
5
1
9
13
17
2
6
10
14
18
5
1
9
13
17
Summary of Contents for TREK-755
Page 1: ...TREK 755 TREK 756 Vehicle Mounted Computer with 10 4 12 1 TFT LCD User Manual...
Page 12: ...TREK 755 TREK 756 User Manual xii...
Page 20: ...TREK 755 TREK 756 User Manual 8...
Page 28: ...TREK 755 TREK 756 User Manual 16...
Page 48: ...TREK 755 TREK 756 User Manual 36...
Page 53: ...2 CHAPTER 8 Audio Introduction Installation of Audio Driver...
Page 55: ...CHAPTER 9 USB 2 0 This chapter describes how to install the USB 2 0 driver...