Clear-Com FOR-22 - Manual (Page 23)

Vitec Group Communications
FOR-22 Dual 4-Wire Interface Instruction Manual 4 - 1
SPECIFICATIONS
Note: 0 dBu is Referenced to 0.775 Volts RMS
Audio Output
Nominal Output Level Selectable by Jumper Between 0 dBu
-15 dBu, or -55 dBu
Impedance 600 ohms at 0 dBu
200 ohms at -15 dBu
20 ohms at -55 dBu
Frequency Response 200-10k Hz, ±3 dB
Maximum Output Level +20 dBu
Audio Input
Level 0 dBu nominal
Impedance >10K ohms (bridging)
Frequency Response 200-10k Hz, ±3 dB
Call Signal Input
Threshold 4 volts DC, Positive or Negative
Polarity
Maximum Input Voltage 50 volts
Relay Contacts
Contact Type 1 pair SPDT (single form C)
Contact Voltage Rating 24 volts DC
Contact Current Rating 1 A continuous, 2 A peak at 24 volts
DC
DC Isolation
Greater than 10 mega-ohms.
Power Supply
Supplied by PSU-101 power supply
Voltage Required ± 8 volts DC Unregulated
Current Required 30 milliamps (per supply, no LEDs or
relays active)
160 milliamps (positive supply, LEDs
and relays active)
140 milliamps (negative supply, all
LEDs and relays active)
Connectors (on rear of IMF-3 frame)
RJ-45 "To Matrix" Connectors 2
DB-9M "Interface I/O" Connectors2
4