Intercom Channel, Unbalanced Mode (SW1 set to Unbalanced or 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
2 5