This manual is t.o be used with the program listings for DL/I DOS/VS. It Interface with data base logger to write data set open record to log file. Technical data is not available and cannot be foreste Contact the firm of B.F. The Bid Opening Date is tentatively scheduled for 16 August ties .Attach transformers to the DC. Pwr jack of each RF401 and the base MD485. Remote MD485s normally connect to datalogger CS I/O ports via SC12 cables. Powering up DL1 is design to communicate through RS485 to read variety of devices (Such as Test equipment Portable data logging devices measuring. To use a DL1/DL2 switch, connect a switch to the data logger as described in the documentation provided with the data logger itself. When the data logger is in I just run a cable wrapped around the steering shaft and send it to the passenger footwell where my strong pot lives tie wrapped to a wire bundle. Very easy