Bb-electronics PCRTC User Manual download pdf (Page 3)

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

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Bb-electronics PCRTC User Manual Page 3