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Documentation Number PCRTC2095 Manual 1
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
Chapter 1. General Information
Introduction
The PCRTC is real time clock for PCs based on a highly
stable oscillator circuit. Using the software driver provided, the
PCRTC will update the DOS clock every minute, ensuring that all
applications have access to accurate time information.
With a simple function call, the PCRTC also reports battery
status and the time of the last power loss or computer reset.
Packing List
Examine the shipping carton and contents for physical
damage. The following items should be in the shipping carton:
1. PCRTC unit
2. One PCRTC 3.5” disk
3. This instruction manual
If any of these items are damaged or missing contact B&B
Electronics immediately.
Specifications
Setup
Address: Programmable with four position DIP switch
Interrupt: None required
Oscillator
Temperature Stability: < 5 ppm 0 - 50 °C
Calibration: < 1 ppm @ 23 °C (room temperature)
Aging: < 1 ppm
Power Requirements
35 mA @ 5VDC
Battery
Requires lithium AA battery 3-4V
Battery Life: approximately 10K hr. without host computer
powered.
Replacement batteries are available from B&B
Electronics, order as part number 3345.
Dimensions: 4.8” l x 3.0” h