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HRTL-One Digital Video Recorder User Guide
Rev 1.00 11 Document 900.0259
10/04
P
Alarm I/O Port
Figure 2-7 shows the 15-pin COM port pinouts on the rear panel of the HRTL-One for a
typical HRTL-One PC to DVR interface (RS-232 communication via DB9 connector).
Figure 2-8 shows the 15-pin COM port pinouts on the rear panel of the HRTL-One and
typical interface for RS-232 communication via DB25 connector. Table 2-3 describes the
9-pin pinouts.
Figure 2-7 9-Pin COM Port Pinout
Figure 2-8 25-Pin COM Port Pinout on External Device