Communications Teledyne API T703/T703U Calibrator Operation Manual
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5.4. RS-485 CONFIGURATION OF COM2

As delivered from the factory, COM2 is configured for RS-232 communications. This
port can be reconfigured for operation as a non-isolated, half-duplex RS-485 port. To
configure the instrument for RS-485 communication, please contact the factory. (Using
COM2 for RS-485 communications disables the optional USB com port).

5.5. REMOTE ACCESS VIA THE USB PORT (OPTION)

The calibrator can be connected to a personal computer by direct connection through
their respective USB ports.
1. Install the Teledyne T-Series USB driver on your computer, downloadable from the
Teledyne API website under Help Center>Software Downloads (www.teledyne-
api.com/software).
2. Run the installer file: “TAPIVCPInstaller.exe”
3. Connect the USB cable between the USB ports on your personal computer and
your calibrator. The USB cable should be a Type A – Type B cable, commonly
used as a USB printer cable.
4. Determine the Windows XP Com Port number that was automatically assigned to
the USB connection. (Start Control Panel System Hardware Device
Manager). This is the com port that should be set in the communications software,
such as APIcom or Hyperterminal.
07223C DCN6572