A null modem serial cable (crossover cable) is needed to send data from the host PC to the NSP. A standard straight through serial cable will not allow the transfer of data. A null modem cable crosses the receive and transmit pins (pins 2,3) on each side of the cable which allows communication between the two devices.

Links to Purchase Cable

http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10212&cs_id=1021205&p_id=477&seq=1&format=2
http://www.cablewholesale.com/specs/null-modem-serial-cable/10d1-20406.htm

Configuring Transmitting Software

Flow control is set to “Hardware” or “XON/XOFF”. The flow control should be set to “None”. On the NSP side it is set to “None” and it cannot be changed. Also, need to make sure PC port is set up for 115200 baud, 8 data bits, 1 stop, and no parity