Furuno NavNet TZtouch2 TZTL12F Setup Procedures page 14

Note:
If the message of [FLIR DETECTED BUT CGI SERVICES IS
NOT AVAILABLE] appears, see Section 5-2 to double check
the setting of Nexus CGI Interface.
(6) Once the M-Series camera is detected, select the video input port that the analog video output from the camera is
connected to. In this example, [Camera 1] is selected.
All the setting options related to FLIR M-Series controls will be
available as shown at right.
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