Intercom Channel,Unbalanced Mode (SW1 set to UNBAL position)
Output Level:1 Vrms ±10%
Input Impedance:150 ohms
Bridging Impedance:greater than 10,000 ohms
Call Signaling:
Send:11 ±3 VDC
Receive:4 VDC minimum
Connector Type: Six-position terminal block with screw-in wire clamps
Pin 1 Common
Pin 2 Local power (12 to 15 VDC, 65 to 150 mA)
Pin 3 Channel 1 +24 VDC input
Pin 4 Channel 1 Intercom audio high and DC call
Pin 5 Channel 2 +24 VDC input
Pin 6 Channel 2 Intercom audio high and DC call
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