Barnett Engineering ProTalk Plus B1290, Operating Manual, Page: 73 / 82

Specifications
Alarm Inputs 8, optically isolated, 2mA to operate,
ground closure required.
Control Outputs 4 independent form C outputs controlled by
programmable codes or used as special
function outputs. Rated: 1 Amp at 30 Volts
Telephone Connection RJ11; tone or pulse line.
Programming Connection RJ11; accepts a standard telephone.
Receive Audio -20 dBm to 0 dBm, 10 k ohm impedance;
unbalanced, AC coupled.
Transmit Audio -20 dBm to 0 dBm, 600 ohm impedance,
unbalanced, AC coupled.
Channel Busy (COS) Ground closure.
PTT Open collector, 25 V max, 150 mA max.
Acknowledge Input Ground closure.
Voice Quality Digitized, toll quality, 32 kbps.
Power +11.5 VDC to +28 VDC, 100 mA standby
current, 10 mA per active relay.
Environment -40
o
C to + 60
o
C, 95% relative humidity,
non-condensing.
Physical 6.5” x 8.5” x 2” Plug-in terminals
Approvals FCC Part 68, FCC Part 15 - Class A, Indus-
try Canada CS-03 Part I Issue 7, CSA
C22.2 No 60950-00 / UL 60950, 3rd Edition
72 Specifications