Specifications

196
APPENDIX D • SPECIFICATIONS
7 Beaver Brook Road, Littleton, MA 01460 • 978-486-0086 • www.burk.com
STATUS:
DB37; 16 binary (low/high) channels;
input impedance > 24kOhms; input
voltage range –30 to 30VDC
continuous; toggle threshold
low-to-high with pull-down at 2.5VDC
(CMOS compatible), high-to-low with
pull-up at 1.5VDC (TTL compatible);
RFI immunity 70dB at 1MHz, 140dB
at 100MHz, 170dB at 500MHz
SET/MODEM:
RJ-11 connector for on-site modem or
telephone set.
LINE:
RJ-11 connector for telephone line.
AUDIO OUT:
Audio from the telephone line can be
routed to this output for possible use
as an emergency audio feed to
transmitter.
AUDIO IN:
Allows external audio (such as off-air
monitor) to be fed into the phone line.
SYSTEM TYPE
Embedded microprocessor-based with
battery backed real-time clock.
MEMORY TYPE
CMOS Static RAM/Flash EPROM
(battery backed)
INTERCONNECTION CIRCUIT
Standard toll-grade telephone circuit
or dedicated two or four wire
interconnection with toll-grade
performance; FCC registered;
Automatic answering
All specifications subject to change
without notice.