Pa PMMI LOOP-BACK TEST VERSION 1.01a TEST ALL DATA TRANSMISSION FUNCTIONS AT ALL BAUD RATES.a RATES ABOVE 650 BAUD WILL SHOW ERRORS.a( HIGHER RATES ARE POSSIBLE IN THE LOOP BACK MODE THAN 2b2 MIGHT BE EXPECTED OVER TELEPHONE LINES, BECAUSE LINEkb< NOISE CONTRIBUTES TO ERRORS. A MM-103 WHEN IN GOODbF CONDITION WILL LOOP BACK WITHOUT ERROR AT 600 BAUD.bP ERRORS AT 65 BAUD WILL INDICATE THAT THE MM-103 HAS bZ HARDWRE PROBLEMS./cd EACH TEST LOOP WILL TAKE ABOUT 15 TO 55 SECONDS.jcn CONTINOUS AND ERROR SUMMARY TO LIST DEVICE ADDED BY:cx RODERICK W. HART WA3MEZccCTc LOOP BACK TEST .c ( )c "PMMI MODEM DYNAMIC LOOPBACK TEST" d "PMMI MODEM DYNAMIC LOOPBACK TEST"d::!d::Qd"REMOVE TELEPHONE LINE PLUG FOR THIS TEST.Wd{d"ENTER HIGHEST BAUD RATE": UPd"ENTER LOWEST BAUD RATE": LWd"DO YOU WISH CONTINOUS TEST": Y$d Y$"Y" CT: Y$"YES" CTdBRUPeS$tBRe" S  e,J(e6L3e@ ,S_eJ ,^ : SET UP UART AND ANS MODE.xeT ,@ : TEST MODEe^X():X() : CLEAR OUT UART REGISTER.eh(() ) h : WAIT FOR CTS. fr(() ) r : CHECK TX BUFFER EMPTY.f| ,J.fJJ : J JHf (() ) UfT()f TJ J "ERROR","WAS",T,"SHOULD BE",J,:EEf J "LOOP NO. "L:LLf L f rf ,f ,fLLg "### BAUD = ###.##";BR,(E(L))d;+g " % ERROR"agL:E: BRLW "END OF TEST CYCLE" : tg: CT zggBRBR : L))d;+g " % ERRO