Trilithic EASyCAST, Hardware Installation Manual

Page: 18 / 44

EASyCAST - Installation Manual
16
11. CG VIDEO OUT (optional) - NTSC video output connection (EAS modified station
video) to the transmitter.
12. Audio inputs - Connects to an EAS audio source.
13. Audio outputs - Provides several EAS audio outputs for general use. Note that
station audio is not included on these outputs.
14. AFSK switch - A balanced stereo audio switch that may be connected in-line with the
normal station audio to the transmitter and interrupt it during EAS transmission.
15. TTL outputs - General purpose TTL (transistor-transistor logic) outputs activated
during EAS.
16. Contact closures - Used for distribution/routing equipment that requires a contact
closure for activation. Also used to control indicators lamps or alarms for studio
personnel.
17. MODEM/telephone expansion - Optional telephone/Ethernet interface for remote
control over the EASyCAST and activation of digital equipment.
18. AES/EBU audio switch - Optional AES/EBU audio input/output that may be
connected in-line with the normal station audio to the transmitter and interrupt it during
EAS transmission.
19. Contact closure inputs (optional) - Used for automation equipment or station
personnel to control the EASyCAST during EAS operations.
Rear Panel Details
COM1 (RS-232 connection) - 9-pin RS-232C DTE interface used for configuration, control,
and log retrieval from a PC or laptop via a 9-pin NULL-MODEM cable.
Pin 2: Receive data*
Pin 3: Transmit data*
Pin 4: Data terminal ready
Pin 5: Signal ground*
Pin 6: Data set ready
Pin 7: Request to send
Pin 8: Clear to send
Pin 9: Ring indicator
* Required signal