General Specifications

Operating Temperature – 0 to 60 Deg C (32 to 140 Deg F) 

Humidity – 5% to 95% (non-condensing)

Line Voltage to Transformer – 100-125 VAC, 50/60 Hz

Communications Ports

Two Serial ports with 6850 ACIA outputs, and driver circuits for RS-232. One of these ports may be configured for RS-422/485. Both ports have independently selectable baud rates from 300 to 38.4 K baud. 

Microprocessor

Motorola 681309, operating at 2 Megahertz (optional 68000 @10 MHz).

Option Board Bus

A 30 pin bus is provided for S-30 bus connection to optional cards such as 8-channel hi-speed A/D con verter, expansion of hispeed counter/ timers, IEEE outputs, D/A converters, etc. 

A/D Converter

A 4 channel, dual-slope, Analog to Digital converter is optionally available on the board. Resolution is programmable up to 15 bits, or up to 1 part in 32,000. 

Real-Time Calendar Clock

This low cost option is backed up by the on board battery. 

I/O Ports

Up to five parallel ports using 6522 VIA chips are available, each capable of driving 16 1/0 points through OPTO-22 mounting bases. 

Lights

Three LED light bars, software controllable, are supplied for annunciation of system events.

Display

Standard display is 2line, 20 character alpha-numeric Vacuum Fluorescent unit for bright readout of set-up questions, production data. Optional LCD and CRT displays are available. 

Memory

Socketed for 8 memory chips to allow up to 64K bytes of RAM or EPROM. On-board battery backs up RAM for up to a year of power loss. (Optional 68000 model supports over 1 meg of memory.) 

Power Supplies

An AC line filter and 30 watt power transformer are supplied with each board. On-board rectification and regulation provide the following supplies:

5 VDC @1 Amp for 1/0 logic, with 250 Ma for sensors. 

12 VDC @100 Ma 

24 VDC @500 Ma, unregulated, for sensors or DC loads. 

+/-15 VDC @500 Ma 

Battery

For RAM memory, optional Real Time Clock. Battery low detector circuit. 

Switches

Two SPDT 5 Amp switches are provided for starting or stopping external master control circuits. 

Keypad

A 5×5 array keypad uses sealed membrane switches with tactile feedback. 

Operator Interface Panel

This optional assembly provides a convenient combination of interface functions, and mounts directly onto the front side of the SBC-200, or it can be remotely mounted, with ribbon cable connections.