描述
100ms积算定时器T250～T255的定时范围为0.1～3276.7s。X1的常开触点接通时(见图3–12)，T250的当前值计数器对100ms时钟脉冲进行累加计数。X1的常开触点断开或停电时停止定时，当前值保持不变。X1的常开触点再次接通或重新上电时继续定时，累计时间(t1+t2)为1055×100ms=105.5s时，T250的触点动作。因为积算定时器的线圈断电时不会复位，需要用X2的常开触点使T250强制复位。
HP/Agilent Q8486A Q8486A Thermocouple Waveguide Power S
HP/Agilent E1406A-010 VXI Command Module
HP/Agilent E3648A Dual Range Power Supply, 0-20V/2A or
HP/Agilent 4945A Transmission Impairment Test Set
HP/Agilent 1663A 32 Ch. Logic Analyzer
HP/Agilent 1158A Active Probe, 4GHz
HP/Agilent 16700B Logic Analyzer Mainframe
HP/Agilent 11667B Power Splitter, DC-26.5GHz
HP/Agilent 16702A Logic Analysis System
HP/Agilent 16556A 68-Channel 100 MHz State/400 MHz Timi
HP/Agilent 11890A-011 Single Mode Lightwave Directional
HP/Agilent 11890A-12 Single Mode Lightwave Directional
