3.3 DATA PORT CONNECTION
Prior to transferring data, the OM-550 must be connected to a PC with the RS-232 cable assembly supplied with the kit. The cable assembly includes a telephone-style cable and two adapters. The OM-550 for Windows software supplied with the kit is used to transfer data through the OM-550 RS-232 Port to a PC for analysis and storage.
9 PIN ADAPTER
25 PIN ADAPTER ![](/images/new-backgrounds/1206875/20687551xi2.webp)
![](/images/new-backgrounds/1206875/20687551xi3.webp)
Figure 3-4
The cable is fitted with a 4P4C connector for the Data Port on the OM-550 and a 6P4C connector for an adapter. The adapters convert 6P4C connectors to 9-pin (or 25-pin) PC serial-port connectors (DB9 or DB25, female).
Figure 3-5
To minimize danger to personnel, and to avoid ground loops which could affect measurement accuracy, never connect the OM-550 to a PC and to the signal inputs simultaneously!