17 IEEE 488.2 Command Reference
760 N1911A/1912A P-Series Power Meters Programming Guide
PPE 
Once the power meter has received a PPC command, the PPE (Parallel Poll 
Enable) secondary command configures the power meter to respond to a 
parallel poll on a particular data line with a particular level.
Tab le  17-95PPE Mapping
PPU 
The  PPU (Parallel Poll Unconfigure) command disables the power meter 
from responding to a parallel poll. This is effectively a universal disable.
Bit Weight Meaning
0 1 Bit positions for response:
000 (bit 0), 001 (bit 1), 010 (bit 2), 011 (bit 3), 
100 (bit 4), 101 (bit 5), 110 (bit 6), 111 (bit 7)
12
24
38 Sense bit
0 - response bit is cleared during a parallel poll 
if requesting service.
1 - response bit is set during a parallel poll if 
requesting service.
416 Always 0
532 Always 1
664 Always 1
7 128 Always 0