MIC-3921 Intelligent Monitoring and Alarm Module Features § Monitoring: +3.3 VDC, +5 VDC, +12 VDC, -12 VDC system bus voltages § Four fan sensor inputs for fan speed monitoring § Three temperature sensor inputs § One "power good" signal input for power supply monitoring § Three channels of relay outputs for external alarm connection § One serial port can be set as RS-232 or RS-485 port, supporting modem output § Three configurable alarm levels: critical, major, minor § Audible alarm with three sound effects § On-board battery backup § Built-in watchdog timer for self-detection Introduction The MIC-3921 is an intelligent PC-system monitoring module. It can detect abnormal system conditions and generate alarm outputs, allowing users to take action before system failure. With the MIC-3921, the MIC-3031, MIC-3032, MIC-3033, and MIC-3081A systems are changed into intelligent, self-diagnostic systems, increasing the reliability of critical applications, such as in communications or computer telephony. The MIC-3921, equipped with a high-brightness vacuum fluorescent display and a control keypad, can be inserted into the MIC-3031, 3032, and 3081A. Powerful Functions The MIC-3921 can detect a wide variety of internal system conditions including temperatures, voltages, fan operation and power supply status. It can generate several different alarm outputs including acoustic signals and relay outputs to notify nearby users. It can also send messages through the serial port for remote notification. The on-board CPU allows users to set the alarm criteria for each input sensor independently and to program different alarm outputs. High Reliability To ensure operational reliability, the MIC-3921 features a built-in watchdog timer for self-testing. The on-board backup battery enables non-stop operation even in the event of total system power failure. Remote Monitoring The MIC-3921 serial port can be configured either as RS-485 to communicate over distances up to 4000 feet, or as RS-232 to connect to other devices such as a modem. Users can remotely monitor a number of computers through a host computer's serial port. Software Support The MIC-3921 is shipped with a powerful and easy-to-use software utility to minimize the time for system integration. "PC Sentry" can run under Windows 95/98/NT. This allows the system host to communicate with one or more alarm modules via the serial port, for configuration, alarm level setting, real-time status display, alarm event logging and so on. Online Download www.advantech.com/products Advantech may make changes to specifications and product descriptions at any time, without notice. Last Updated: March-03-04 MIC-3921 Specifications Features SystemVoltage +3.3V +5V +12V -12V Voltage 0~+4.8V 0~+6.8V 0~+16.32V 0~-16.32V VoltageAccuracy 0.5%ofFSR Sensor1(OnBoard) 0~60°C(32~140°F) Temperature Sensor2and3 30~125°C(86~257°F) Accuracy ±3°C Sensor1,2,and4 700~10000rpm Fan Sensor3 2800~40000rpm Hi >2.4V PowerGoodInput Lo <0.8V Output NC(normallyclosed)andNO(normallyopen) Relay PowerRating AC125V@0.3A,DC100V@0.3A,DC30V@1A Interface RS-232/RS-485(jumperselectable) SerialPort BaudRate 1200,2400,4800,9600,19200bps BoardID 1~255(0forconfigurationonly) ChargeTime 24hours Battery Capacity 1200mA-H(fullcharged,for0.5~1hroperation) Operating Non-Operating Temperature 0~50°C(32~122°F) -20~70°C(-4~158°F) Environment Humidity -- 5~95%RH,non-condensing Vibration(5-500Hz) 1.0Grms 2.0G Reliability MTBF 100,000hours Serviceability MTTR 5minutes Ordering Information Dimension Diagram PartNumber Descriptions Intelligentsystemmonitoringandalarmmodulewith MIC-3921 MIC-3921-A vacuumfluorescentdisplay,keypadandutilityCD (16.73") (8.07") (89.37") (27.56") (12.99") (0.98") (9.06") (18.50") (12.60") Unit: mm (inch) Online Download www.advantech.com/products Advantech may make changes to specifications and product descriptions at any time, without notice. Last Updated: March-03-04 (57.48") (19.14") (16.82") (25.20") (4.33") (66.93")