97Magtrol Model DSP7000 Dynamometer Controller C h a p t e r 8 – Optional EquipmentoperationFigure 8–14 RS-232 Card Installation4. Mount the two standoffs and the two socket head cap screws onto the main board. Use fourPhilips pan head screws to secure the RS-232 card into the rear panel of the DSP7000.5. Replace the top cover of the DSP7000 and secure with four Philips pan head screws.8.3.2 ConneCTionThe RS-232 connection includes null modem wiring internal to the unit. To install, use a straightthrough pin-to-pin connector cable, which can be purchased from your local electronics store.DIGITAL GROUND4.2.3.6.1.5.7.8.9.DSP7000 PC5. GND (SIGNAL GROUND)1. DCD (DATA CARRIER DETECT)6. DSR (DATA SET READY)3. TX (TRANSMIT DATA)2. RX (RECEIVE DATA)4. DTR (DATA TERMINAL READY)9. RI (RING INDICATOR)8. CTS (CLEAR TO SEND)7. RTS (REQUEST TO SEND)TXRXN/CGNDFigure 8–15 Straight Through Pin-to-Pin Cable Connection
