User's Manual

4-35
For the CT OUT on pin T of the Breakout Box, Pin D is the ground return.
When performing the Transmitter Tests in accordance with Paragraph 4-2.3 and Figure 4-2:
For the CT IN on pin B of the Breakout Box, Pin D is the ground return.
For the HI-LVL PT IN on pin H of the Breakout Box, Pin J is the ground return.