User manual

2004 Stevens Water Monitoring Systems Inc. All Rights Reserved.
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The Shark is designed as a DTE. The only reason to use a null modem cable or adapter is
when you are connecting to another DTE, like your laptop or PC.
The Shark’s D-SUB 9-pin connector is male. The only reason to use a gender changer is
when the equipment you are plugging it into is also male.
If you treat these issues separately, then you will cut down on a lot of confusion about
how to connect The Shark to your equipment.
The following diagrams illustrate this rule:
TxD—2
RxD—3
DSR—4
GND—5
DTR—6
CTS—7
RTS—8
RS232 Equipment—DCE
RxD—2
TxD—3
DTR—4
GND—5
DSR—6
RTS—7
CTS—8
The Shark—DTE
Straight Cable Connection
for “The Shark” Use
Figure 13: Straight Cable Connection
RxD—2
TxD—3
DTR—4
GND—5
DSR—6
RTS—7
CTS—8
Host System—DTE
RxD—2
TxD—3
DTR—4
GND—5
DSR—6
RTS—7
CTS—8
The Shark—DTE
Null Modem Connection
for “The Shark” Setup
Figure 14: Null Modem Connection: DTE