Gamry Instruments TDC4, Operator'S Manual, Page: 12 / 32

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Warning
If you replace the line cord you must use a line cord rated to carry at least
10 amps of AC current. An improper line cord can create a safety hazard,
which could result in personnel injury or death.
Power Up Check
Once the TDC4 has been connected to an appropriate AC voltage source, you can turn it on to verify its
basic operation.
The power switch is a large rocker switch on the right side of the front panel.
Note
Make sure that a newly installed TDC4 has no connection to its switched
outlets when it is first powered. We want to verify that the TDC4 powers up
correctly before we add the complexity of external devices.
When the TDC4 is powered up, the temperature controller should light up and display a couple of status
messages. Each message will be displayed for a few seconds.
If you have an RTD cabled to the unit the upper display should show the current temperature at the
probe (the units are degrees Celsius). If you do not have a probe installed, the upper display should
show a line containing the characters OPN.
Once the unit has powered up correctly, turn it off prior to making the remaining system connections.
RS232 Cable
The TDC4 comes with an EIA232 (RS232) cable suitable for connection of an TDC4 to the 9 pin COM port
on a PC. The Gamry part number for the cable is 985-00093. It terminates in 9-pin D connectors, male on
the computer end and female on the TDC4 end. Appendix A of this manual contains a full description of
the TDC4's RS232 connector.
If your computer includes an RS232 (COM) port, connect the RS232 cable between the RS232 port on the
rear panel of the TDC4 and the computer’s RS232 port.
Note the COM port (for example COM2) that is used. This information will be required in software
configuration.
The following information may be helpful if you need a special RS232 cable.
The TDC4's RS232 port has been wired as an RS232 DCE (data communications element), similar to a
modem. Your computer's RS232 port is normally wired as a DTE (data terminal element). In most cases,
an RS232 cable that connects a modem to your computer will successfully connect the TDC4 to your
computer.