User manual

RS-232 SERIAL COMMUNICATION

NOTE: A null modem cable is needed for proper operation of the RS-232 serial

control. A null modem cable will internally cross the Tx and Rx lines. Please see the

above diagram for a typical null model pinout.

RS232 Settings

Bits per second ................................................................................................ 115200

Data bits .................................................................................................................... 8

Parity .................................................................................................................. None

Stop bits .....................................................................................................................1

Flow Control ....................................................................................................... None

Verifying RS-232 Functionality

• Connect the PC to HD-PVR using a Null Modem DB9 cable

• Plug in the power supply of HD-PVR but do not really power on the unit

• Launch HyperTerminal, with the given port settings

• HyperTerminal will initialize the connection with HD-PVR automatically, if not,

click the “Call” icon to connect manually

• Power on the unit using the “POWER” button on the remote unit

• The message on the next page will show on the HyperTerminal: