Figure 3: sf-2040 viewed from bottom, Table 4: serial cable pin-outs, See figure 3). external power has precedence o – NavCom SF-2040 Rev.F User Manual
Page 32: Figure 3. each conforms to the eia rs-232 standard, Table 4. the supplied
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SF-2040 User Guide – Rev. F
2-30
configured as a DCE device. Laptop and desktop
computers are configured as DTE devices, therefore
a straight-through cable provides proper connectivity
(PC TXD pin 2 connects to SF-2040 RXD pin 2).
Table 4: Serial Cable Pin-Outs
Figure 3: SF-2040 Viewed From Bottom
LEMO
Pins
Signal Nomenclature
[DCE w/respect to DB9]
DB9S
Pins
1
CTS - Clear To Send
5VDC to TruBlu
1
8
2
RD - Receive Data
2
3
TD - Transmit Data
3
4
DTR - Data Terminal Ready
4
5
RTN - Return [Ground]
5
6
DSR - Data Set Ready
6
7
RTS - Request To Send
7
1
TruBlu – NavCom’s Bluetooth wireless accessory
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