National Instruments GPIB-PC - Manual (Page 209)

Section Five IBIC
©National Instruments Corp. 5-21 GPIB-PC User Manual
Read the serial poll status byte. This serial poll status byte will vary
depending on the device used.
Example:
DVM:
[0100] (cmpl)
Poll: 0x40 (decimal : 32)
ibrsp
The read command displays the data on the screen both in hex values
and their ASCII equivalents.
Example:
DVM:
[0100] (cmpl)
count: 18
4E 44 43 56 20 30 30 30 N D C V 0 0 0
2E 30 30 34 37 45 28 30 . 0 0 4 7 E + 0
OA OA
ibrd 18