TDS2CMA Communications Module
TDS1000/2000-Series Digital Oscilloscope User Manual
135
Connecting an External Device
When you connect the module t o an external RS-232 device, follow
these guidelines:
H Use t he c orrect cable (re fer to the table on page 134).
H Use a cable that is no longer than 50 feet.
H Power off the oscilloscope and the external device before you
connect the cable between them.
H Connect the oscilloscope only to a DCE device.
H Check that the oscilloscope signal ground (pin 5) is connected to
the external device signa l ground.
H Connect the chassis ground of the oscilloscope to the chassis
ground of the external de vice.
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