TDS2CM Communications Module
TDS 200-Series Extension Module Instructions
13
Connecting an External Device
Follow these guidelines when connecting the module to an external
RS-232 device:
Use the correct cable (refer to the table on page 12).
Use a cable that is no longer than 50 feet.
Turn off the oscilloscope and the external device before inserting
the cable into the connectors.
Connect the oscilloscope only to a DCE device.
Check that the oscilloscope signal ground (pin 5) is connected to
the external device signal ground.
Connect the chassis ground of the oscilloscope to the chassis
ground of the external device.