IBM System/7 Functional Characteristics - All about the IBM 1130 ...

If a particular amplifier gain was selected by the last convert command, the 16 bits ofdata have the format:O 1 15S Data OLFourteen bits of binary data plus sign (S bit) are returned. The single-bit OL field is seton if an overload condition occurred with the program-selected amplifier gain.Read ADC Extended PrecisionO 5 8 11 16 20 26 31Op code R Fun Zeros Mod DA MA00001 XXX 010000000001100100 XXXXXXMI II II 1111 III 11111 111 II0 8-F 4 0 1 9 0-3 XThis command stores in standard form (14 bits plus sign) the binary output value from theADC when automatic amplifier gain was selected by the last convert command.The binary output value resulting from the last conversion cycle is stored in the indexregister (R), or the accumulator if R=000. The data transferred to the register has theformat:O 1 15S Data OL1 1 1 1 1 1 1 1 1 1 1 1 1S..111■Ne■INI,,..•••••,,MINI■••■■••■,„•■•••••••••■••••,■•■,Fourteen bits of binary data plus sign (S bit) are returned. The single-bit OL field is set onif an overload condition occurred with the automatic amplifier gain selection. Note thatthe automatically selected gain is not returned with the data. This gain can be determinedby issuing a read-ADC command before or after the read-ADC-extended-precision command.IBM 5014 Analog Input Module Models B1 and E2 10-5