INTRODUCTION
Datum Inc bc630AT Real Time Clock Module 1-3
Table 1-1
Performance Specifications
Item Description
Time Code Reader Time Code Formats IRIG A, B, NASA 36, 2137.
Carrier Range IRIG A - 10 kHz ±2%.
IRIG B, NASA 36, 2137 - 1 kHz ±2%.
Flywheel Accuracy <3.6 milliseconds per hour (with Filter enabled).
Modulation Ratio 3:1 to 6:1.
Input Amplitude 100 mVrms to 1 Vrms.
Input Impedance 10K Ω(AC Coupled).
Real Time Clock Format 24 hour.
Accuracy ±10 PPM.
XT/AT Bus
Interface Address Space 1 block of 16 bytes in the PC I/O map.
Range: 100H - 3FFH in an AT computer.
200H - 3FFH in an XT computer.
Interrupts Jumper selectable for IRQ3-7, 9, 10, 11, 12, 14 or
15 interrupt lines.
Power +5VDC @ 500mA.
TTL/CMOS Input
Signals Event Capture TTL/CMOS, positive or negative edge triggered, 50ns
min width, 500 µs min period.
TTL Output
Signals 1 Pulse Per Second TTL/CMOS, positive edge on time.
Heartbeat Pulse TTL/CMOS, positive edge on time.
RS-422
Input/Output
Signals
1PPS 1PPS (+), 1PPS (-), positive edge on time.
Serial Time/Mssg TX/RX (+), TX/RX (-) 9600 Baud, 8 bits, 1 stop bit,
no parity.
TX (-) compatible with most RS-232 devices.
Operating and
Storage
Environments
Temperature
Operating
Non-Operating 0oto 70oC.
-50oto 125oC.
Relative Humidity
Operating
Non-Operating 10% to 80% (non-condensing).
5% to 95% (non-condensing).
Altitude
Operating
Non-Operating
1,000 feet below sea level to 10,000 feet above sea
level.
1,000 feet below sea level to 20,000 feet above sea
level.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
