User manual

Manual page 8
GPI
GPI FUNCTION CONNECTION
Tip Pull down 47 ohm to ground
Ring Pull up +5 volt via 10kohm
Sleeve No Not connected
PHONE
PHONE RJ12 FUNCTION CONNECTION
Pin 1 n.c.
Pin 2 A (telephone line) In/out
Pin 3 B (telephone line) In/out
Pin 4 n.c.
LINE
LINE RJ12 FUNCTION CONNECTION
Pin 1 n.c.
Pin 2 A (telephone line) In/out
Pin 3 B (telephone line) In/out
Pin 4 n.c.
SPECIFICATIONS
Audio Inputs
SEND
Impedance 10k Ohm, electronically balanced
Common mode rejection >40dB
Maximum input level +26dBu
Nominal input level +4 dBu
Frequency response 20Hz – 15kHz (-3dB variable via HC and LC filters)
Connectors XLR type 3 pin female
Gain range receive control 40dB