Firecom 3000C Installation & Operation Manual page 19

TEST THE INTERCOM-ONLY HEADSETS
17. Connect an Intercom-Only Headset to an intercom-only station.
18. Adjust the headset for a comfortable fit and microphone position.
19. Press the black Push-To-Talk (PTT) button on the headset and verify intercom
operation by listening to your own voice.
20. Adjust the headset volume for a comfortable listening level.
21. Test the other Intercom-Only Headsets and stations.
SYSTEM DYNAMIC TEST
22. Start the apparatus engine.
23. At a Radio-Transmit station close to the intercom unit, check the intercom and
radio functions.
24. Adjust the Squelch Control on the intercom unit counter-clockwise until the
engine noise just cannot be heard. DO NOT over-adjust the squelch or you may
not be able to hear the normal intercom traffic.
Final adjustment of these controls may be required under actual apparatus operating
conditions.
S Y S T E M T E S T
17.