Burk GSC3000, Installation & Operation Manual

Page: 134 / 149

S Stta attu uss****:: 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
G G--B Bu uss 1 1:: RS-485; 115.2kbps; 110ohm impedance, category-five twisted-pair cable; 1,000-foot limit for all units
networked combined
G G--B Bu uss 2 2:: RS-485; 115.2kbps; 110ohm impedance, category-five twisted-pair cable; 1,000-foot limit for all units
networked combined
System Type:
Embedded microprocessor-based with battery backed real-time clock.
Memory Type:
CMOS Static RAM/Flash EPROM (battery backed)
Accessory Power:
5VDC, fused at 100mA (pin 17, J4: Metering)
12VDC, fused at 100mA (pin 18, J4: Metering)
-12VDC, fused at 100mA (pin 19, J4: Metering)
5VDC, fused at 100mA (pin 17, J3: Status)
5VDC, fused at 100mA (pin 18, J3: Status)
5VDC, fused at 500mA (pin 17, J2: Command 1–8)
5VDC, fused at 500mA (pin 18, J2: Command 1–8)
5VDC, fused at 500mA (pin 17, J1: Command 9–16)*
5VDC, fused at 500mA (pin 18, J1: Command 9–16)*
Supplied Cables:
(1) AC power cord
(1) G-Bus Cable
(1) G-Bus Terminator
(1) DB9F to DB25M serial cable
(1) DB9F to DB9F null-modem cable
*Not available on I/O 8 units.
**I/O 16 units have 16 channels each of Metering, Status, and Command consisting of one Status port (16
channels), one Metering port (16 channels), and two Command ports (8 channels each). An I/O 8 unit has one
Metering/Status port (8 channels of Metering and 8 of Status combined in one port) and one Command port (8
channels).
GSC3000 & VRC2500 INSTALLATION & OPERATION MANUAL
APPENDIX B: SPECIFICATIONS & WARRANTY
126