Gorman-Redlich EAS1 encoder/decoder rear panel terminal description

Term. Label	Description
1-12 Audio In-Monitor inputs 1-6	Six pairs of audio inputs are each coupled to the decoder by 600 ohm to 600 ohm isolation transformers. These six audio sources are scanned for EAS alert messages.
13-14 Audio Out - 600 ohm select	Balanced 600 ohm continuous audio output from an operator selected monitor input. Any channel #1 - #6.
15-16 Audio Out - 8 ohm select.	Balanced 8 ohm continuous audio output from an operator selected monitor input. Any channel #1 - #6.
17-18 Audio Out - 600 ohm alert	Balanced 600 ohm audio output from the channel carrying the alert message. This output is gated on when the alert takes place
19-22 Control Out - Alert	Two contact closure outputs can be used to signal remote control equipment, automation equipment, or to activate a remote bell or lamp.
23-24 Console Muting	These terminals allow console muting of the panel speaker when the unit is installed in an on/air room.
25-32 Audio In/Out Program Lines A/B	Eight terminals for balanced 600 ohm stereo program audio lines. Via these inputs and outputs, the encoder interrupts the program audio to insert the alert message.
33-34 Control Out - Send Alert	Contact closure which can complete the circuit for an external relay coil for a coaxial relay during the time the encoder is sending an alert signal. This will allow a low impedance coaxial alert feed directly into a transmitter exciter circuit, thus bypassing all audio processing or energizing external relays to put the alert on additional transmitters.
35-36 Control Out - EAS - Complete	Contact closure output to signal automation equipment that the EAS interruption is completed.
37-38 Control In - Delete Audio	Contact closure input for deleting the 853/960 attention signal and the audio message portion of a received alert message. The encoder will send only the FSK (frequency shift keying) header and EOM (end of message) portions. The contact closure would be supplied by remote switch or remote control equipment contacts.
39-40 Control In - Send Alert	Contact closure input to tell encoder to send a stored alert message now.
41-42 Control In - Local	Contact closure input to switch the encoder from automatic to manual control.
43-44 Control In - EOM	Contact closure input to remotely send EOM (end of message). FSK code.
45-46 Control In - RWT	Contact closure input to remotely send RWT (required weekly test). FSK header code and FSK EOM code.
47-48 Control In - RMT	Contact closure input to remotely send RMT (required monthly test). FSK header code and dual tones.
49-50 Data In/Out - RS485	Serial data option for future remote control equipment.
51-52	Spare terminals for future use.