SmartSensor HD - Interprovincial Traffic Services

CHAPTER 4 • COMMUNICATION 41Figure 4.2 – Serial Connection (left) and Advanced Settings (right)Advanced SettingsThe Advanced Settings screen contains the following fields:˽˽˽˽˽˽Timeout (ms) – Allows you to set an additional amount of time (in milliseconds) thatSSMHD will wait for a response when communicating with the sensor.Buffer (bytes) – Contains the number of bytes used by SSMHD to store data receivedfrom the sensor.Flow Control – Is usually only used if you are connecting through a RS-232 device thatrequires hardware handshaking.NoteWhen connecting directly from a computer running SmartSensor Manager HD to aSmartSensor HD unit (with no modem in between), you should not attempt to connectuntil after the Flow Control setting in the serial connection's Advanced Settingsscreen is set to None. Otherwise you may not be able to successfully connect.Modem ConnectionThe SmartSensor HD can be connected directly to an external analog modem, to whichyour PC’s modem can then dial up to establish a connection. For example, this could be aregular Plain Old Telephone Service (POTS) analog modem or a wireless modem (GSM,etc.) if service is available in your area.