TDS2CMA Communications Module
TDS1000/2000-Series Digital Oscilloscope User Manual 135
Connecting an External Device
When you connect the module to a n external RS-232 device, follow
these guidelines:
HUse the correct cable (refer to the table on page 134).
HUse a cable that is no longer than 50 fee t.
HPower offthe oscilloscope and the external device beforeyou
connect the cable between them.
HConnect the oscilloscope only to a DCE device.
HCheck that the oscilloscope signal ground (pin 5) is connected to
the external device signal ground.
HConnect the chassis ground of the oscilloscope to the chassis
ground of the external device.